Wire Cloth Specs

7/30/2019 Wire Cloth Specs

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MESH SPECIFICATIONS

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Ron-Vik works with both wire and synthetic meshes

to offer you the greatest design flexibility. These

materials are woven in much the same way as the

fabrics used in our clothing. Mesh offers very good

flow characteristics, low cost and a wide range of

opening sizes. We stock from 1 down to 1 micron

openings (.0000394). The mesh chart on the

following page is for wire mesh only but can be used

as a reference for synthetic meshes. There is no

standardization of synthetic mesh sizes so consult

your Ron-Vik representative for more information.

Terminology

Mesh

Number of wires per linear inch measured from center

of wire to center of wire.

Warp

Vertical direction of wires, which run the length of the

roll. First number in the mesh specification.

Shute

Horizontal direction of wires. Sometimes referred to as

weft.

Square Mesh

Mesh count is identical on both warp and shute

directions.

Off Count

A plain weave mesh that has a greater number of

wires per inch in one direction usually the warp

direction (40x36, 60x50).

Wire Diameter

Normally referred to in decimal parts of an inch, a

determining factor in the mesh count (0.025, 0.0085,

0.0012, 0.0008).

Opening

The dimension between parallel adjacent wires,

usually in decimal parts of an inch or microns.

Open Area

The percentage of opening of a given mesh utilizing a

given wire diameter. This is not given for Dutch

weaves.


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Plain Weave

Mesh in which each warp and each shute

wire/thread passes over one and under the next

adjacent complimentary wire/thread in both

directions. This is the simplest, most commonly

used weave. Also called

Square Weave.

Twilled Weave

Mesh where each shute wire/thread passes

successively over two and under two warp

wires/threads and each warp wire passes

successively over two and under two shute

wires/threads.

Plain-Dutch Weave*

The pattern of this mesh is the same as in plain

weave except that the warp wires are of a larger

diameter than the shute wires and the shute wires

are driven up close to each other, resulting in

tapered or wedge-shaped openings instead of

square openings. In Dutch weave the warp wires

remain in straight condition and the shute wires are

crimped.

Twilled-Dutch Weave*

Wire cloth which has the twilled weave except the

warp wires are of a larger diameter than the shute

wires and the shute wires are driven up close to

each other, resulting in tapered or wedge-shaped

openings. Warp wires remain in a straight

condition, but the shute wires take all the crimp.

Due to the twilled weave construction, the shute

wires are not only deformed in depth (crimps when

formed around the warp wires) but also sideways.

*Wire meshes only

Inches to microns

Inches x 25,400 = microns

Microns to inches

Microns / 25,400 = inches

Opening width

Opening = 1 - DMM

(D = Wire diameter, M = mesh)

Percentage of open area

% of open area = (OM)2 x 100

(O = opening, D = wire diameter)

Conversion Factors

Particle RetentionThe size particle that will be retained by a given mesh usually expressed inmicrons. In both types of Dutch Weave the sum derived from the multiplying of thenumber of weft wires in a given measurement by their diameter results in theory, ona specification with no open space. Because the wires are forced tightly togetherduring the weaving process, the aperture size cannot be determined in the normalmanner. There are two methods by which the aperture size can be determined (seeBubble Point Test and Glass Bead Test).

Bubble Point TestThe pressure required to pass air bubbles through the mesh (covered by a testliquid) is measured. The average size can then be calculated by taking into accountsurface tension, liquid density, temperature and immersion depth.

Glass Bead TestA suspension containing glass beads is passed through the mesh, the diameter ofthe largest bead passing through is considered as the absolute micron retention.

Types of Weave


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WIre MeshThe following is a sample of common materials used for wire mesh, however, other materials are available.

Stainless Steels

Rapidly replacing other alloys because of their ability to show longer life under severe corrosive and temperature conditions.

The principal stainless steels used for wire cloth are:

Type 304 - The basic stainless alloy (18% chrome, 8% nickel) and is the most extensively used to weave wire cloth. It has

excellent corrosion resistance, which is satisfactory for most applications. T304 melts at 2,600 deg F (1430 C) but its

maximum recommended temperature for continuous service is 1,450 deg F (760 C) and is useful for intermediate service up

to 1,650 deg F (900 C). Where no type is specified, it is assumed that Type 304 is acceptable for your application.

Type 316 - The same as 304 with additional 2 % minimum molybdenum to provide increased corrosion resistance to salts

and acids. In addition, it has increased strength at high temperatures. T316 melts at 2,500 deg F (1,375 C) but its maximum

recommended temperature for continuous service is 1,500 deg F (815 C) and is useful for intermediate service up to 1,650

deg F (900 C).

Steel (Plain)

Used in applications where corrosion or abrasion resistance are not controlling factors. Low cost, high tensile strength and

ductility makes it popular in manufacturing operations.

Nickel Based Alloys

Inconel* alloy 600 - A high chromium alloy (nickel 76.0%, chromium 15.8%, iron 7.2%) used for corrosion resistance and

temperatures up to approximately 1800 degrees F.

Monel alloy 400 - A high nickel copper alloy which is one of the most widely used alloys of

corrosion resistance. It has the strength of a mild steel and will not corrode in a great many solutions found in

industrial applications.

Aluminum

Known for its lightness and high strength to weight ratio, aluminum has good corrosion resistance, electrical

conductivity and thermal conductivity.

Copper

Copper has some of the most favorable corrosion-resistant properties, but its relatively low tensile strength and high

ductility limits its application, therefore a copper alloy is usually preferred for wire cloth. Commercial or pure copper

is sometimes used for its electrical properties.

Brass

Standard brass (copper 65%, zinc 35%) has a high strength and ductility for severe cold with a mild corrosion

resistance.

Commercial Bronze

A higher copper alloy (copper 90%, zinc 10%) used in cases where better corrosion resistance than

brass is required.

Phosphor Bronze

An alloy of copper and tin (1 1/4% to 10%) deoxidized with phosphorous. It is strong and

resistant to corrosion from sea water and many other media.

Synthetic MeshThe following are the most commonly used synthetic materials for filter and strainer

applications. Other materials are available.

Nylon

Nylon mesh is the most commonly used synthetic material for strainer and filter applications. It is

strong, flexible and elastic. Nylon is highly resistant to solvents, automotive fluids and alkalies.

Polyester

Polyester is widely used for its resistance to acids and most solvents. It is an inelastic material that has good strength

and good UV resistance.

Polypropylene

Polypropylene has excellent resistance to most acids and bases. It has moderate strength and limited UV resistance.


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MICRONIC MESH

Nominal Type of Absolute*

Micron Mesh Weave Wire Diameter Micron

200 12 x 64 PDW .023 x .0165 280

80 24 x 110 PDW .015 x .0105 120

100 20 x 250 TDW .010 x .0085 115

65 30 x 150 PDW .009 x .007 100

55 30 x 250 TDW .010 x .008 100

55 40 x 200 PDW .007 x .0055 75

40 50 x 250 PDW .0055 x .0045 60

30 120 x 600 TDW .004 x .0023 40

25 80 x 700 TDW .004 x .003 35

20 200 x 600 TDW .0024 x .0018 30

15 165 x 800 TDW .0029 x .002 2510 165 x 1400 TDW .0028 x .0016 17

5 200 x 1400 TDW .0028 x .0016 13

2 325 x 2300 TDW .0014 x .0011 8

PDW = Plain Dutch Weave

TDW = Twilled Dutch Weave

PLAIN AND TWILLED WEAVE

Wire Opening % of Stainless Steel

Diameter Width Open Area WT.LBs/100ft2

1 MESH .120 .880 77.4% 93.7

.105 .895 80.1% 71.7

* .080 .920 84.6% 41.5

.063 .937 87.8% 25.8

2 MESH .120 .380 57.8% 191.5

.080 .420 70.6% 83.8

* .063 .437 76.4% 51.7* .047 .453 82.1% 28.7

.041 .459 84.3% 21.8

3 MESH .063 .270 65.6% 78.4

* .047 .286 73.6% 43.2

.032 .301 81.5% 19.9

4 MESH .120 .130 27.0% 392.5

.080 .170 46.2% 173.8

.063 .187 56.0% 105.8

* .047 .203 65.9% 58.2

.035 .215 74.0% 32.0

* .032 .218 76.0% 26.7

* .028 .222 78.9% 20.4

.025 .225 81.0% 16.3

5 MESH .080 .120 36.0% 222.8

.047 .153 58.5% 73.3

.041 .159 63.2% 55.4

.023 .177 78.3% 17.2

6 MESH .063 .104 38.9% 164.6

.047 .120 51.8% 89.1

.035 .132 62.7% 48.6




8 MESH .063 .062 24.6% 218.5

.047 .078 38.9% 122.1

.035 .090 51.8% 65.8

.032 .093 55.4% 54.6

.028 .097 60.2% 41.5

.023 .102 66.6% 27.8

.017 .108 74.6% 15.0

10 MESH .047 .053 28.1% 149.9

.035 .065 42.3% 83.9

.032 .068 46.2% 69.5.025 .075 56.3% 41.6

.020 .080 64.0% 26.4

12 MESH .035 .048 33.2% 103.1

.028 .055 43.6% 64.1

.023 .060 51.8% 42.6

.018 .065 60.8% 25.8

.013 .070 70.6% 14.4

14 MESH .025 .046 41.5% 59.9

.020 .051 51.0% 37.6

.018 .053 55.1% 30.2

16 MESH .032 .031 23.8% 113.0

.028 .035 30.5% 84.4

.023 .040 39.9% 58.3

.018 .045 50.7% 34.8

.009 .054 73.3% 8.6

18 MESH .017 .039 48.3% 35.1

.009 .047 70.4% 9.6

20 MESH .023

.020 .030 36.0% 55.8

.016 .034 46.2% 34.7

.014 .036 51.8% 26.4

.009 .041 67.2% 10.6

24 MESH .014 .028 44.2% 32.1

30 MESH .013 .020 37.1% 35.1

.012 .021 40.8% 29.7

.011 .022 44.8% 24.7

.0095

.0065 .027 64.8% 8.4

35 MESH .012 .017 33.8% 35.4

.011 .018 37.9% 29.3

40 MESH .013 .012 23.0% 49.3

.010 .015 36.0% 27.9

.009 .016 41.0% 22.2

50 MESH .009 .011 30.3% 28.7

.008 .012 36.0% 22.3




60 MESH .011T .0057 11.7% 53.4

.009 .008 21.3% 33.8

.0075 .009 30.5% 23.9

.0065 .010 37.5% 17.6

.0045 .012 53.3% 8.1

70 MESH .0065 .008 29.8% 21.0

80 MESH .007T .0055 19.4% 27.7

.0055 .007 31.4% 17.1

.0037 .0088 49.6% 6.9

100 MESH .0045 .0055 30.3% 15.7

120 MESH .004 .0043 26.6% 14.5

.0037 .0046 30.5% 11.3

130 MESH .0034 .0043 31.2% 11.6

145 MESH .0022 .0047 46.4% 4.7

150 MESH .0026 .0041 37.8% 7.2

165 MESH .0019 .0042 47.1% 3.9

180 MESH .0018 .0038 46.0% 4.7

200 MESH .0023T .0027 29.1% 8.1

.0021 .0029 33.6% 6.3

.0016 .0034 46.2% 3.7

230 MESH .0014 .0029 46.0% 3.1

250 MESH .0016 .0024 36.0% 4.3

270 MESH .0016T .0021 32.1% 4.8

300 MESH .0015T .0018 29.2% 4.7

325 MESH .0014T .0017 30.5% 4.3

400 MESH .0011T .0014 31.4% 3.4

500 MESH .001T .001 25.0% 3.2

635 MESH .0008T .0008 25.8% 2.7

OFF COUNT MESHES



40 x 36 .009 .016 x .019 40.8% 22.0

60 x 50 .0065 .010 x .0135 41.3% 15.3

80 x 70 .007 .007 x .009 34.5% 15.0

100 x 90 .0045 . 0055 x .0066 32.7% 11.7

* Also available in a T304 welded mesh

T Twilled Weave

800 Colorado Avenue South

Minneapolis, Minnesota 55416

Tel: 763.545.0276 or 800.328.0598

Fax: 763.545.0142 or 800.775.6239

www.ron-vik.com

Fitness for Use and Sellers LiabilityThe user is responsible for determining whether the Ron-Vik product is fit for a particular

purpose and is suitable for the users method of functional application. It is essential that

the user evaluate the Ron-Vik product by inspection and/or testing to assure that the

product meets all the design specifications/validation criteria.

Ron-Viks liability shall be limited to the stated selling price of any defective goods, and

shall in no way include purchasers lost profits or goodwill or any other special or

consequential damages incurred by the purchaser.

MicronA unit of length in the metric system. One micron is 1/1000th millimeter, which isequivalent to 0.00003937 of an inch.

*Absolute filtration ratingA measure of retention, expressed in microns, that specifies the equivalent diameter of thesmallest particle for which the filter has a retention of 100%. In actual practice, mostmanufacturers assign absolute ratings on the basis of the retention in the range from 98%- 99.999999%.

Wire Cloth Specs

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