TUNGUM - Supertech Group · 4 SPECIFICATION AND APPLICATION GUIDE 5 Marine Corrosion Resistance of...

TUNGUMSPECIFICATION ANDAPPLICATION GUIDE

Tungum Alloy (Aluminium-Nickel-Silicon-

brass) combines an unusually high strength to

weight ratio, with ductility, excellent corrosion

resistance, and fi rst class fatigue properties.

Highly resistant to sea water and its atmosphere,

Tungum resists both stress and crevice corrosion

to offer outstanding serviceability, even at

intermittent duty in the highly corrosive

‘splash’ zone.

Non-magnetic and non-sparking properties make

Tungum invaluable in piping high pressure gases,

particularly oxygen where its thermal conductivity/

defusivity characteristics virtually eliminate the

potential dangers present when lesser materials

are employed.

Tungum Alloy is a cryogenic material, suitable

for chemical engineering and low temperature

processes. Its corrosion resistance often enables

its use in conveying fl uids and gasses containing

corrosive elements.

Tungum is uncommon among copper alloys,

in that heat treatments include precipitation

hardening. This enables its physical properties

to be increased or decreased as required, to suit

your circumstances.

Tungum’s high proof to ultimate stress ratio

enables system proof tests to be conducted

well above working pressure, without risk of

permanent set taking place.

When used in high pressure hydraulic or

pneumatic circuits, these features together with

inherent “clean bore” characteristics combine

in affording an easily constructed, high integrity

system. This requires a minimum of purging and

no external protective treatment.

Pages 6 & 7 illustrate just some of the many

applications where a requirement for a tube

exists, that has to be strong, capable of absorbing

vibration, be resistant to corrosion and yet still

bent into a complex shape. This has been more

than satisfi ed by the use of Tungum Alloy.

Introduction to Tungum Alloy 2

Performance Where it Really Matters 3

Marine Corrosian Resistance of Tungum Alloy 4-5

World of Tungum 6-7

Physical Properties of Tungum Alloy 8

Comparative and Elevated Temperature Performance 9

Fatigue and Low Temperature Characteristics 10

General Corrosion Resistance 11

Designing with Tungum Alloy 12-13

Tungum Alloy Tubing - Metric Range 14-15

Tungum Alloy Tubing - Imperial Range 16-17

Specifi cations and Approvals 18

Fabricating Systems in Tungum Alloy 19

Contents

Introduction to Tungum Alloy

2 SPECIFICATION AND APPLICATION GUIDE

3SPECIFICATION AND APPLICATION GUIDE

Trouble and Maintenance Free Performance Where it Really Matters

Some offshore installations currently utilizing TUNGUM alloy

corrosion-resistant tubing.

Britoil ‘Clyde’ Platform

Total ‘Dunbar’ Platform

E.E. Caledonia‘ Piper Bravo’ & ‘Saltire’ Platforms

B.P. ESV “Iolair’, ‘Sullean’ & ‘Buzzard’ Platforms

HoulderOffshore MSV ‘Uncle John’

Q.G.P.C. ‘North Field’ Platform

Texaco ‘Captain’ Platform & Floater

Shell has standardised on TUNGUM for - ‘Eider’,

‘Tern’, ‘Southern Basin Revamp’, ‘Sole Pit MSV’

‘Stadive’, ‘Golden Eye,’ ‘Sakhalin Isle’ & ‘Ursa’

in the Gulf of Mexico

In salt-laden marine atmospheres, ‘316’ stainless steel is highly susceptible to crevice corrosion and chloride pitting. After just a few years of salt spray exposure, it may still look bright from a distance, but closer inspection reveals telltale signs of imminent failure to hold pressure.

TUNGUM alloy, however, possesses a natural protection mechanism whereby, on exposure to salt spray, a very thin oxide coating is generated over the exposed surface, no more than two thousandths of an inch thick, when complete. The tube becomes discoloured, it may even have a verdigris coating, but under the oxide layer the tube material is perfect and will remain so for a very long time.

TUNGUM has been in use offshore since 1978 and industry awareness of its superiority for use in marine environments is increasingly evident as more and more operators question the use of stainless steel from both safety and economic viewpoints.

Although initially more expensive than stainless steel, the proven life expectancy of TUNGUM make the long-term operating costs far more attractive. For example, the price of instrumentation tubing for a standard rig using stainless steel compared with using TUNGUM alloy is approximately half. However, by using stainless steel you can expect 5-10 refi ts over the life of a rig and, just by taking the price of tubing into account, costs quickly escalate as demonstrated in the graph. Not to mention the costs involved in rig shut down and ‘old’

tube disposal.

Another cost benefi t is that, as a copper-based alloy,

TUNGUM is relatively easy to bend, resulting in vastly

reduced installation times compared to stainless steel -

up to 1/3 less is not uncommon. Bearing in mind that the

average installation costs for stainless steel are in the

region of £17 - £30,000, further savings will be signifi cant.

You don’t need to be a mathematician to work out the

economic advantages of TUNGUM alloy which is not only

capable of lasting the life of the platform but will also give

trouble and maintenance-free performance throughout.

4 SPECIFICATION AND APPLICATION GUIDE 5SPECIFICATION AND APPLICATION GUIDE

Marine Corrosion Resistance of Tungum Alloy

Of the environmental conditions in which engineering

products daily have to operate, none poses a greater or

wider problem than sea water and the associated saline

atmosphere, which frequently exists for many miles inland.

The life expectancy of equipment is often drastically reduced

and in areas where corrosion has already taken place,

predicting failure as a basis for preventative maintenance is

diffi cult if not impossible.

At its most aggressive, in the presence of oxygen, sea water

attacks most ‘standard’ materials is a variety if differing but

equally costly ways: -

CARBON STEEL

Prove almost impossible to protect and corrode away

almost immediately.

COMMON COPPER ALLOYS

Often suffer a shortened life, either as a result of

dezincifi cation or even stress corrosion.

STAINLESS STEELS

Are highly prone to chloride pitting a particularly damaging

form of crevice corrosion producing small holes in material

having an otherwise sound appearance.

Tungum alloy tube remains unscathed despite more than

10 years marine exposure on a semi-submersible support

vessel. The stainless steel section, from a southern North

Sea gas platform, shows both crevice corrosion and chloride

pitting after barely fi ve years in the same environment, in

lines under pipe clamps.

TUNGUM ALLOY

TUNGUM ALLOY was developed specifi cally to counter the

problems of sea water and in practice has already done so for

over 40 years.

Whether total immersed, or in the highly active ‘splash’

zone Tungum Alloy affords exceptional resistance to the

effects of marine environment. Unaffected by either stress or

crevice corrosion, Tungum Alloy is protected by a speedily

self generated oxide coating which, once formed, prevents

further attack. If this oxide coating is damaged it does of

course quickly repair itself.

An example of Tungum Tubing after 10 years at sea on

a dredger. Only the grime and oxide coating has been

removed from the tube exterior.


SUBSTANCE POTENTIAL mV

Magnesium 1730

Ng-4% Al Solid Solution 1680

Galvanised Iron 1140

Cd-Zn Solder (71/29) 1120

Mg5Al8 1070

Zinc 1050

MgZn22 1040

Al-4% Zn Solid Solution 1020

Al-Zn-Cu Alloy 3L5 990

Al-1% Zn Solid Solution 960

Al-4% Mg Solid Solution 870

Cd-Plated Steel 850

MnAl6 850

Aluminium (99.95%) 850

Al-Zn-Mg-Cu-Ni Alloy RR77 840

Al-Zn-Mg-Cu-Cr Alloy 75S 840

Aluminium (90.0%) 830

Al-11.9% Si Alloy N2 830

Al- 1 1/4% Mn Alloy N3 830

Al-1% Mg Si Solid Solution 830

Al-Si-Cu-Ni-Fe Alloy DTD.133B 810

Clad H14 Alloy 810

Mild steel 353 780

Grey Cast Iron 780

Tinplate 740

Al-7% Mg Alloy 690

Al-4% Cu Solid Solution 690

Al-Cu-Mg-Mn Alloy H14 680

Iron (pure) 580

FeAl3 560

Tinman’s Solder 560

Lead 550

Cu Al2 530

Tin 500

Brass (60/40) 330

Aluminium Brass 290

Silicon 260

Cupro-Nickel (70/30) 260

TUNGUM ALLOY 230

Copper 220

Stainless Steels (316 = 195mV) 130-430

Monel 170

Nickel 140

Silver 80

Graphite

Gold

Platinum

The special corrosion resisting characteristics of Tungum

Alloy tubing, carefully developed for use in the hydraulics

systems of marine aircraft remains just as valid in todays

polluted sea waters.

The development of the oxide coating is illustrated by the

graph below. This shows time plotted against a minute

weight loss during its formation. After 1000 hours the

weight has virtually stabilised indicating that the protective

coating is already almost complete.

A fact confi rmed in the laboratory by the most rigorous

tests and backed by experience of countless practical and

demanding applications. Many of these more than 50

years standing.

GALVANIC SERIES OF ENGINEERING MATERIALS

The table opposite shows the relative position of Tungum

Alloy to other well known materials when placed in galvanic

series.

In general signifi cant galvanic corrosion does not take place

when copper is coupled to its alloys or when different copper

alloys are in contact with each other. The amount of galvanic

corrosions on a less noble metal will depend on the relative

areas of the two metals in contact and the potential or voltage

existing between them in a given environment.

For example a large mass of copper, or its alloy should not be

coupled to a small mass of reactive material such as iron, zinc

or aluminium. On the other hand the coupling of a copper, or

its alloy having a small area relative to the area of the more

reactive metal will often prove to be satisfactory.

Generally a good electrical contact in a metal to metal joint

will be greatly reduce the possibility of galvanic corrosion.


The World of Tungum Alloy

1

2

3

5

6

1 Emergency Support Vessel 1010 Lair 2 Warrior Armoured Personnel Carrier

3 Mine Counter Measure Vessel - HMS ‘Ledbury’ 4 Domestic Shower 5 Millwall Cut Bridge 6 Central Line Turbostar Train

4


7

8

9

10

11

7 ‘Heysham 2’ Nuclear Power Station 8 Pipeline Inspection Equipment 9 SAK 40 ‘Trinity’ Bofors Gun

10 Black Magic: PC9M Trainer Plane 11 Aircraft Carrier Scissor Lift

We would like to thank all the companies who provided pictures for this brochure


Thermal Properties

Electrical Conductivity at 20°c Referred to Copper 15% ± 5%

Specifi c Resistance at 20°c Microhms per mm 1.13

Electrochemical Equivalent Kg per coulomb 32.4

Solution Potential mV Calomel scale 230

Magnetic Permeability µ 1.0015

Melting Temperature °c 1008

Stress relieving Temperature °c (for 15/20 mins.) 300

Solution Treatment Temperature °c (for 60 min) 800

Thermal Conductivity W/m°c77 at 100°c103 at 300°c

Coeffi cient of thermal expansion Per °c 19 x 10-6

Physical Properties of Tungum Alloy

Specifi c GravityWeight Kg/mm3

Lb. per cu. In.

8.60

8.52 x 10-6

0.308

Ultimate Tensile Strength Mean Value

Min Value for NES.749 PT 3

Min Value for TCL100

Min Value For DTD5019

N/mm2

Tons per sq. in.

N/mm2

Tons Per sq. in.

N/mm2

Tons Per sq. in.

N/mm2

Tons Per sq. in.

48031.07

45029.13

43027.84

41727.00

0.2% Proof Strength Mean Value

Min Value for NES.749 PT 3

Min Value for DTD5019

N/mm2

Tons Per sq. in.

N/mm2

Tons Per sq. in.

N/mm2

Tons Per sq. in.

24015.54

23014.89

21614.00

Elongation Mean Value

Min Value for NES.749 PT 3 AND DTD5019

% on 5.65 √ A

% on 5.65 √ A

45

40

Hardness Range for TCL100

Range for NES.749 PT 3

HV5

HV5

120 –140

125 - 140

Modulus of Elasticity In Tension or Compression

In Tension or Shear

N/mm2

Ib. per sq. in.

N/mm2

Ib. per sq. in.

116.5x103

16.9x106

43.8x103

6.35x106

Poisson’s Ratio 0.33

Ultimate Shear Strength N/mm2

Tons Per Sq. In.25316.4

Yeild point in Shear N/mm2

Tons Per Sq. In.1439.3

IZOD Impact Value J. 41.7

Mechanical Properties

Electrical properties


Comparative & Elevated Temperature Performance

400

300

200

100

The strength to weight ratio of Tungum Alloy

compares most favourably with other materials.

In tubes, this often affords the opportunity to

employ SMALLER, LIGHTER SECTIONS – reducing

the size and cost of fi ttings and supports also

easing handling during fabrication, opening the way

for more compact space systems.

The graph shows the results of burst tests conducted

on identical samples of 1⁄2” O/D x 20SWG tubing.

Room temperature design strengths taken

from BS1306 clearly confi rm the outstanding

performance of Tungum Alloy relative to other

copper based materials.

Short-Time Elevated Temperature Properties

The graphs apply to Tungum Alloy tubing in the

annealed condition with the test piece maintained at

the temperature for a period of 60 minutes.

Copper 41 N/mm2

90 /10 CU.NI 68 N/mm2

70 / 30 CU. NI 82 N/mm2

Tungum Alloy 105 N/mm2

Introduction to Tungum Alloy


As would be expected of a material originally developed

for use in the hydraulic control systems of aircraft, Tungum

Alloy has excellent fatigue resisting properties.

Today, pulsing pressures and vibration are recognised

as being a major factor infl uencing the integrity and

performance of all hydraulic systems irrespective of the

application.

In practice, tubing is often used after bending. In this

operation the outer wall of the tube becomes thinner and the

inner wall thicker. The severity of this depends on the radius

of curvature and the angle encompassed by the bend. The

tube also becomes oval due to the forming operation.

The radius of the bend, the angle of the bend, the ovality

of the tube and obviously properties of the tubing material,

all infl uence its fatigue life. The relationship between the

maximum stress, calculated for straight and circular Tungum

Alloy tubing, and the number of stress repetitions to

cause failure is shown below. The graphs are based on the

results of tests carried out in controlled conditions and are

reproduced for guidance purposes only.

Tungum Alloy satisfi es many low temperature and cryogenic

applications. The mechanical properties of the Alloy all

improve with reducing temperatures down to as low as

- 196°c. The impact resistance also remains substantially

unchanged over the same temperature range.

The table opposite compares the properties of solid, hard as

drawn Tungum alloy at 15°c and -196°c.

Temperature 15°c -196°c

.2% Proof Stress [N/mm2] 410 426

Ultimate Tensile Strength [N/mm2] 617 793

Elongation % on 5.65 √ A 20 34

Izod V-Notch value of energy absorbed in Joules 41 43

Fatigue & Low Temperature Characteristics

Specifi cations and approvals


General Corrosion Resistance

Substance MaxConcentration

Max Temp °c Rating

Acetic AcidAll

0-302020

EG

Acetic Anhydride 0-100 20 E

Alum 0-100 20 G

Aluminium Sulphate 0-40 20 G

Borax All 20 E

Calcium Bi-Sulphate All 70 G

Carbon Tetrachloride Boiling E

Citric Acid All 20 G

Cotton Seed Oil All 20 E

Creostum All 20 G

Cryesylic Acid All 20 E

Formaldehyde All 20 G

Formic Acid 0-50 20 E

Hydrochloric Acid 0-10 20 G

Hydrogen Sulphide(H2S) 2500 p.p.m. - G

Hydrokinone 0-100 20 E

Lactic Acid All 20 E

Halic Acid All 20 E

Magnesium Chloride 0-10 50 E

Methylene Chloride - Boiling E

Metol S.S. 20 E

Oleic Acid All 20 E

Oxalic Acid25grms./100c.c

20 E

Phosphoric Acid 0-10 100 G

Picric Acid All 20 G

Potassium Bromide S.S. 20 E

Potassium Nitrate All 20 E

Salicylic Acid S.S 20 G

Sodium Bicarbonate - - G

Sodium Chloride S.S 20 E

Sodium Hydroxide S.S 20 E

Sodium Hypochloride S.S 70 G

Sodium Hypochlorite 1% Av.Cl. 50 E

Sodium Metabisulphate S.S 20 E

Sodium Sulphate S.S 20 E

Sodium Sulphite 0-10 50 E

Stearic Acid All 20 E

Sulpher Dioxide - - G

Tannic Acid All 20 E

Tartaric Acid All 20 E

Trichlorethylene - Boiling E

Vinegar All 20 G

Zinc Chloride - 20 E

Zinc Sulphate S.S 20 E

Tungum Alloy has a high level of general corrosion

resistance, allowing it to be specifi ed for use in systems

containing, or operating in the presence of, a variety of

substances / solutions.

The ratings below are the result of laboratory tests

conducted under the controlled conditions noted.

They are published for guidance only.

Where any doubt exists, samples of Tungum are freely

available for fi eld trials to replicate the precise operating

conditions.

Rating: EExcellent resistance – minimal attacks take place.

Rating: GGood resistance under the conditions of test.

Note: Tungum Alloy should not be used in the

presence of Acetylene, Ammonia or Mercury.

Realising the full potential of a high strength corrosion

resisting material such as Tungum Alloy, requires careful

consideration from fi rst principles.

All too often, time is at a premium and temptation exists to

cost competing materials on the basis of identical sections

(ignoring opportunities afforded by the higher strength of the

superior material). Whilst the temptation is a real one, the

resultant system will often be more costly than is necessary

or, indeed on occasions, the costing may indicate that the

budget will simply not allow a maintenance free material to

be fi tted.

The former is undesirable, the latter is often regretted for life

Even when time is at a premium, the best system will always

result from following the procedures outlined below:

Establish the operating parameters:

• Working pressure

• Flow rate required

• Operating environment

• Reliability required

• Maintenance diffi culty rating

• Other special consideration (such as the

consequences of failure in a vital system)

Select the required tube section.

Taking into account that high strength materials ( such as

Tungum Alloy ) afford an opportunity of using thinner walled

tubes. Frequently, even smaller tubes have the same capacity

as larger ones in lesser material. The benefi ts to be gained

are often substantial in contributing to:

• The cost effective use of tubing

• Ease of manipulation / fabrication

• Simplifi ed handling during construction

• Reduced cost as a result of using smaller tube

fi ttings and clamps

• Smaller, more compact systems, through the use of

smaller sections

Remember the corrosion resistance, cold working and clean

bore characteristics of Tungum Alloy combine to give the

advantage of:

• Eliminating the need to protect the tubing from the

elements prior to and during fabrication.

• Reducing the time and, most importantly, the cost

involved in purging a system of contamination

• Minimising the risk of damage to expensive circuit

control equipment

• Virtually eliminating maintenance costs

Theoretical Burst Pressure

In the tables ( pages 14-17 inclusive ), the values for

minimum theoretical burst pressure have been calculated

in accordance with the formula quoted in BS.1306; using a

minimum ultimate strength of 430 N/mm2 (27.84 Tons/sq. in).

The fi gures shown are for tubes in the straight, “as supplied”

condition.

When selecting a tube for a particular application, allowances

must be made for the effects of any bending which take place

during fabrication.

Designing with Tungum Alloy


Engineering installations demand that a safety factor be

applied when establishing the sections of material to be

used. The maximum working pressure will be the minimum

theoretical burst pressure of the particular section divided by

the desired factor of safety.

BS.1306 recommends a factor of safety of 4:1 for copper

alloy tubes used in pressure vessels.

If when installing Tungum tube it has to be heated to a

temperature in excess of 700°c, its original properties may be

restored by a precipitation hardening treatment carried out at

500°c for 1 hour and air cooled.

Conditions Of Tube As Supplied

Tungum Alloy tubes are solid drawn (seamless), and are

supplied in the “W.P” (precipitation hardened) condition

within the tensile range required to meet the appropriate

specifi cation. Hard, as drawn, tube may be supplied on

request, within the tensile range of 550-664 N/mm2 (35-43

Tons/sq. in.) with an average V.P.N. hardness of 215.

Length of Tungum Tube

Tubes supplied to DTD specifi cations are in random lengths

of 4.57 / 5.18 metres (15 / 17 feet ). Tube to specifi cation

TCL100 is supplied in random lengths of 3.95 metres ( 13 feet

) and over, average length 5.50 / 6.10 metres ( 18 / 20 feet).

Subject to prior agreement, longer lengths of tubing can

be supplied.

Tolerances

Dimensional tolerances for Tungum tubing are stated in the

appropriate specifi cation – DTD.5019; DTD253A; AFS.4000;

NES.749 Part 3 or BS EN 12449 - Formally BS 2871.

Tubes Supplied to specifi cation TCL100 conform to the

tolerances laid down in BS EN12449 CW 700R, Cond, R430.

The tables shown on pages 14, 15, 16 and 17, feature the

theoretical weight per unit length for a tube of nominal

dimensions. Due to manufacturing tolerances, the actual

weight of any given tube can vary from this datum. In such

cases, the actual weight consigned and invoiced will differ

slightly from that calculated theoretically.

Availability

As a policy, large stocks of Tungum tubing are maintained

in both metric and imperial sizes. Whilst this enables most

popular sizes to be available Ex. Stock, certain of the lesser

used sections must be considered as being subject to a

special order.

If the range does not include your particular size

requirement, please call to discuss.

Conversion table for standard wire gauges, decimals

and metric.

Maximum working pressure

Imperial S.W.G. Inch Decimal Millimetre

.0196 .500

24 .0220 .559

22 .0280 .711

0.315 .800

20 .0360 .914

.0394 1.000

18 .0480 1.220

.0591 1.500

16 .0643 1.625

.0787 2.000

14 .0800 2.032

.0984 2.500

12 .1040 2.641

.1181 3.000

10 .1280 3.251

.1378 3.500

.1575 4.000

8 .1600 4.064

.1772 4.500

6 .1920 4.877

.1969 5.000

.2165 5.500

.2362 6.000


OUTSIDE

DIAMETER

(mm)

WALL

SECTION

(mm)

MINIMUMTHEORETICAL

BURST PRESSURE

(Bar)

BORE

DIAMETER

(mm)

CROSS

SECTIONAL

BORE AREA

(sq. mm)

WEIGHT

Kg/M Kg/ft

3.00.80 2715 1.40 1.5 .047 .014

0.50 1515 2.00 3.1 .033 .010

3.50.80 2225 1.90 2.8 .058 .018

0.50 1265 2.50 4.9 .040 .012

4.0

1.00 2500 2.00 3.1 .080 .024

0.80 1890 2.40 4.5 .069 .021

0.50 1090 3.00 7.1 .047 .014

6.0

1.25 1985 3.50 9.6 .159 .048

1.00 1515 4.00 12.6 .134 .041

0.80 1170 4.40 15.2 .111 .034

8.0

2.00 2500 4.00 12.6 .321 .098

1.50 1745 5.00 19.6 .261 .080

1.25 1405 5.50 23.8 .226 .069

1.00 1090 6.00 28.3 .187 .057

0.80 850 6.40 32.2 .154 .047

10.0

2.00 1890 6.00 28.3 .428 .131

1.50 1340 7.00 38.5 .341 .104

1.00 850 8.00 50.3 .241 .073

12.0

2.50 1985 7.00 38.5 .636 .194

2.00 1515 8.00 50.3 .535 .163

1.60 1170 8.80 60.8 .445 .136

1.20 850 9.60 72.4 .347 .106

1.00 695 10.00 78.5 .294 .090

15.0 1.60 910 11.80 109.4 .574 .175

16.0

4.00 2495 8.00 50.3 1.280 .390

3.50 2105 9.00 63.6 1.162 .354

3.00 1745 10.00 78.5 1.044 .318

2.50 1405 11.00 95.0 .903 .275

2.00 1090 12.00 113.1 .749 .228

1.60 850 12.80 128.7 .617 .188

1.00 510 14.00 153.9 .401 .122

20.0

4.00 1885 12.00 113.1 1.772 .540

3.50 1605 13.00 132.7 1.546 .417

3.00 1340 14.00 153.9 1.365 .416

2.50 1090 15.00 176.7 1.171 .357

2.00 850 16.00 201.1 .964 .294

1.50 620 17.00 227.0 .743 .226

1.00 405 18.00 254.5 .509 .155

22.001.6 600 18.80 277.6 .874 .266

1.00 365 20.00 314.2 .562 .171

Tungum Alloy Tubing Metric Range


NOTE: The fi gures shown in these tables are approximate, and are intended for estimating purposes only.

OUTSIDE

DIAMETER

(mm)

WALL

SECTION

(mm)

MINIMUMTHEORETICAL

BURST PRESSURE

(Bar)

BORE

DIAMETER

(mm)

CROSS

SECTIONAL

BORE AREA

(sq. mm)

WEIGHT

Kg/M Kg/ft

25.0

5.00 1885 15.00 176.7 2.677 .815

4.00 1445 17.00 227.0 2.248 .685

3.50 1240 18.00 254.5 2.014 .614

3.00 1040 19.00 283.5 1.747 .538

2.50 850 20.00 314.2 1.506 .459

2.00 665 21.00 346.4 1.231 .375

1.50 490 22.00 380.1 .944 .288

1.00 320 23.00 415.5 .642 .196

30.0

6.00 1885 18.00 254.5 3.850 1.174

5.00 1515 20.00 314.2 3.346 1.020

4.00 1170 22.00 380.1 2.784 .848

3.50 1005 23.00 415.5 2.483 .757

3.00 850 24.00 452.4 2.168 .661

2.50 695 25.00 490.9 1.840 .561

2.00 545 26.00 530.9 1.499 .457

1.50 405 27.00 572.6 1.144 .349

1.00 265 28.00 615.8 .776 .237

38.0

6.00 1420 26.00 530.9 5.139 1.566

5.00 1155 28.00 615.8 4.416 1.346

4.00 900 30.00 706.9 3.640 1.110

3.50 775 31.00 754.8 3.233 .985

3.00 655 32.00 804.2 2.810 .857

2.50 540 33.00 855.3 2.376 .724

2.00 425 34.00 908.0 1.928 .587

1.50 315 35.00 962.1 1.465 .447

50.0

7.00 1240 36.00 1018.0 8.050 2.454

6.00 1040 38.00 1134.2 7.076 2.152

5.00 850 40.00 1256.6 6.022 1.836

4.00 665 42.00 1385.4 4.925 1.501

3.50 575 43.00 1452.2 4.356 1.328

3.00 490 44.00 1520.5 3.774 1.150

2.50 405 45.00 1590.6 3.179 .968

2.00 320 46.00 1662.1 2.570 .782

57.0

7.00 1065 43.00 1452.3 9.370 2.853

6.00 900 45.00 1590.4 8.191 2.496

5.00 735 47.00 1734.9 6.959 2.121

3.50 500 50.00 1963.5 5.012 1.528

2.00 280 53.00 2206.4 2.945 .897

76.15.50 595 65.10 3328.5 10.393 3.168

2.00 205 72.14 4086.9 3.967 1.209


Tungum Alloy Tubing Imperial Range

OUTSIDE

DIAMETER (in)

WALL

SECTION

(S.W.G.)

MINIMUM THEORETICAL

BURSTPRESSURE

(P.S.I.)

BORE

DIAMETER (in)

CROSS

SECTIONAL

BORE AREA

( sq. in. )

WEIGHT

Kg/M Kg/ft

1/8”

18 66830 .029 .001 .064 .019

20 44210 .053 .002 .055 .017

22 31910 .069 .004 .047 .014

24 23800 .081 .005 .039 .012

3/16”

18 37875 .092 .007 .116 .035

20 26395 .115 .010 .094 .029

22 19620 .132 .014 .077 .024

24 14930 .143 .016 .063 .019

1/4”

16 37825 .121 .012 .206 .063

18 26425 .154 .019 .167 .051

20 18810 .178 .025 .133 .041

22 14165 .194 .030 .107 .033

24 10875 .206 .033 .092 .028

5/16”

16 28550 .184 .027 .276 .084

18 20295 .217 .037 .219 .067

20 14615 .240 .045 .172 .052

22 11085 .257 .052 .138 .042

24 8555 .268 .057 .110 .034

3/8”

12 42035 .167 .022 .487 .148

14 30040 .215 .036 .408 .124

16 22930 .246 .048 .345 .105

18 16470 .279 .061 .271 .083

20 11945 .303 .072 .211 .064

22 9105 .319 .080 .168 .051

24 7050 .331 .086 .136 .041

1/2”

12 29105 .292 .067 .711 .217

14 21265 .340 .091 .580 .177

16 16450 .371 .108 .484 .147

18 11965 .404 .128 .375 .114

20 8755 .428 .144 .288 .088

22 6705 .444 .155 .228 .070

24 5215 .456 .163 .182 .055

5/8”

12 22260 .417 .137 .936 .285

14 16460 .465 .170 .753 .229

16 12825 .496 .194 .623 .190

18 9390 .529 .220 .478 .146

20 6905 .553 .240 .366 .112

22 5305 .569 .254 .289 .088

24 4135 .581 .265 .229 .070


NOTE: The fi gures shown in these tables are approximate, and are intended for estimating purposes only.

OUTSIDE

DIAMETER (in)

WALL

SECTION

(S.W.G.)

MINIMUM THEORETICAL

BURSTPRESSURE

(P.S.I.)

BORE

DIAMETER (in)

CROSS

SECTIONAL

BORE AREA

( sq. in. )

WEIGHT

Kg/M Kg/ft

3/4”

10 22940 .494 .192 1.375 .41912 18020 .542 .231 1.160 .35414 13425 .590 .273 .926 .28216 10510 .621 .303 .761 .23218 7730 .654 .336 .582 .17720 5705 .678 .361 .444 .13522 4395 .694 .378 .349 .10624 3425 .706 .391 .277 .084

1”

8 21265 .680 .363 2.321 .70710 16455 .744 .435 1.927 .58712 13050 .792 .493 1.609 .49014 9805 .840 .554 1.271 .38716 7720 .871 .596 1.039 .31718 5710 .904 .642 .789 .24120 4230 .928 .676 .599 .18322 3265 .944 .700 .470 .14324 2555 .956 .718 .372 .113

1.1/4”

8 16460 .930 .679 3.012 .91810 12830 .994 .776 2.480 .75612 10230 1.042 .853 2.058 .62714 7725 1.090 .933 1.616 .49316 6105 1.121 .988 1.317 .40118 4525 1.154 1.046 .996 .30420 3360 1.178 1.090 .755 .23022 2600 1.194 1.120 .591 .180

1.1/2”

6 16460 1.116 .978 4.337 1.3228 13425 1.180 1.094 3.702 1.12810 10515 1.244 1.215 3.033 .92412 8410 1.292 1.311 2.507 .76414 6370 1.340 1.410 1.962 .59816 5045 1.371 1.477 1.594 .48618 3750 1.404 1.548 1.204 .367

1.3/4”6 13850 1.366 1.466 5.166 1.57418 3200 1.654 2.149 1.411 .430

2”

6 11955 1.616 2.051 5.995 1.8278 9805 1.680 2.217 5.084 1.55010 7725 1.744 2.389 4.138 1.26112 6205 1.792 2.522 3.405 1.03814 4720 1.840 2.659 2.652 .80816 3745 1.871 2.751 2.149 .655

2.1/2”6 9385 2.116 3.517 7.652 2.33216 2980 2.371 4.417 2.705 .824

3”6 7735 2.616 5.375 9.310 2.83814 3110 2.840 6.335 4.034 1.230


Specifi cations and approvals

18 SPECIFICATION AND APPLICATION GUIDE

• BS EN 12449 CW 700R, Cond. R430 (Formally BS 2871) Identifi ed as alloy CZ.127

• British Standard 1306

• American Standard A.S.T.M B706-TF Identifi ed as copper alloy UNS C.69100

• French National Standard UZ.15.NS

• Ministry Of Defence Specifi cations:

Aviation : DTD5019 (for H.P Systems) Navy : NES.749 Part 3

: DTD253 A (for L.P Systems) Army : AFS.4000

Tungum Ltd is totally dedicated to the concept of quality.

The Quality Management System is approved to:

• BS EN ISO 9001-2000

• Civil Aviation Authority Standard – As a material supplier

Tungum Alloy tubing and fi ttings have the approval of:

• Lloyds Register of Shipping

• Det Norske Veritas

Chemical Composition

Copper 81.00 86.00

Aluminium 0.70 1.20

Nickel 0.80 1.40

Silicon 0.80 1.30

Iron 0.25

Lead 0.05

Tin 0.10

Manganese 0.10

Total Other Impurities 0.50

Zinc The Remainder

ELEMENTPER CENT

MIN MAX

• House specifi cation TCL100 “Tungum tubing for general use”.

The specifi cation is available in 3 ratings:

TCL100/A : Eddy current tested in accordance with the

requirements of BS. 3889 and ASTM E.243-85. – standard

specifi cation

TCL100/B : tested to 310 bar (4500 PSI)

TCL100/C : tested to 465 bar (6750 PSI)

Note:1 These are pre-delivery test pressure levels. They do not

determine the working pressure capability of any given tube size.

2 Pre-delivery hydraulic tests to customer specifi c levels can be carried out on request.

All Tungum Alloy tubes have basically the same chemical composition, but are manufactured to a variety of

Specifi cations according to the demands of the end user. The following Standards refer to Tungum Alloy tubing:

NOTE: Some standards only apply to certain tube size or special mill orders. Please check with us before ordering.

Fabricating Systems In Tungum Alloy

Tungum Ltd. has been in the pipework business for over 60 years. In the years of the Second World War, the Company

supplied Tungum Alloy tubing and tube manipulations for installation in such famous aircraft as the Spitfi re, Hurricane,

Lancaster and Halifax.

Since that time, the Company has been continually involved in supplying pipework from all materials for safety critical

applications in amongst others, the aviation, transport and medical industries. This unrivalled depth of knowledge and

experience is now directed towards saving the customer time and money by providing the complete pipework service.

The service starts with the design advice, moves on to prototype and pre-production work. This culminates in the

provision of a complete kit of fabricated assemblies, together with associated fi ttings, clamps, etc. All are fully tested and

ready for fi tting on the customers production line.

The complete pipework service

Tungum Alloy’s special combination of high strength

and ductility make it a very easy material to use on

even the most complex of systems. The ease with

which it can be cold bent and manipulated, means

that the are often signifi cant reductions in the system

installation time compared to other materials,

particularly stainless steel, copper nickel and monel.

Correctly applied, most types of high duty coupling

can be used to Tungum Alloy tubing. The exceptions

are common brass versions of couplings in which the

tightening of the nut must also deform the tube: these

fi ttings are never strong enough to work on Tungum

Alloy tubing.

Always follow the assembly instructions provided by

the coupling manufacturer.

For added confi dence of a permanent hard piped

system, why not consider our own “PG Series” Silver

Solder Fittings.

“PG Series” Silver Solder Fittings have the General

Approval of Lloyds Register for use in systems

designated to operate at high pressures. They are

designed to satisfy the demands for high strength and

corrosion resistance. The “PG series” also employs

Tungum Alloy material to provide the foundations

for consistent quality brazed joints.

Available in sizes 6mm to 50mm, the comprehensive

range is described in a product leafl et, available on

request.

Also available on request is our Design & Workshop

Guide which outlines the most common situations

likely to be encountered when using the material;

our Design Engineers are also available to advise

on specifi c matters.

19SPECIFICATION AND APPLICATION GUIDE

.DTLMUGNUT

Tel: + 44 (0) 1684 271290Fax: + 44 (0) 1684 291714E-mail: [email protected] Site: www.tungum.co.uk

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Hints on designing and installing pipework

• Select the appropriate wall section for the

pressure and service.

• Design pipe runs to allow access and easy

removal of important equipment.

• Provide adequate and correctly placed supports;

to ensure vibration is controlled to an

acceptable level.

• Select clamps which are ‘kind’ to the tube

surface, but which grip it tightly.

• Employ bends generously using the same radius

throughout. Always allow adequate room for

clamping between bends.

• Ensure each pipe fits correctly without imposing

additional loads on couplings/pipe joints.

• Protect small diameter pipe runs against being

used as ladders or hand hold.

Tungum Ltd. Warrant that their products are free

from defects in workmanship and material but unless

expressly agreed in writing Tungum give no warrant

that their products are suitable for any particular

purpose or for use under any specific circumstances

notwithstanding that such purpose would appear to

be covered by this publication.

Tungum accept no liability for any loss, damage or

expense whatsoever arising directly from the use of

their products. All business undertaken by Tungum is

subject to their standard Conditions of Sale, copies of

which are available on request.

Number One, Ashchurch Parkway,Tewkesbury,Gloucestershire. GL20 8TU, ENGLAND

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