IS 1570-7 (1992): Schedule for wrought steels, Part 7 ... · IS 1570-7 (1992): Schedule for wrought...

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है”ह”ह

IS 1570-7 (1992): Schedule for wrought steels, Part 7:Steels for elevated temperature service (creep resistantsteels) [MTD 16: Alloy Steels and Forgings]

Indian Standard

SCHEDULE FOR WROUGHT STEELS PART 7 STEELS FOR ELEVATED TEMPERATURE SERVICE

(CREEP RESISTANT STEELS )

( Second Reprint APRIL 1998 )

UDC 669*14*018*44 (083.4)

@ BIS 1992

BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002

May 1992 Price Group 7

Alloy Steels aud Special Steels Sectional Committee, MTD 16

FOREWORD

This Indian Standard was adopted by the Bureau of Indian Standards, after the draft finalized by the Alloy Steels and Special Steels Sectional Committee, had been approved by the Metallurgical Engineering Division Council.

Schedules for wrought steels for general engineering purposes ( IS 1570 : 1961 ) was first published in 1961. On the basis of the experience gained in the production and use of steels, the Sectional Committee has decided to revise the standard and issue it in parts. The other parts of the standard are as follows:

Part 1

Part 2

Part 3

Part 4

Part 5

Part 6

This schedule specifications.

Steels specified by tensile and/or yield properties

Carbon steels ( Unalloyed steels )

Carbon and carbon manganese free cutting steels

Alloy steels ( excluding stainless and heat-resisting steels )

Stainless and heat-resisting steels

Tool steels

does not give limits for sulphur and phosphorus. These have to be specified in the detailed

For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis shall be rounded off in accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard,

IS 1570 ( Part 7 ) : 1992

Indian Standard

SCHEDULEFOR WROUGHTSTEELS PART 7 STEELS FOR ELEVATED TEMPERATURE SERVICE

( CREEP RESISTANT STEELS )

1 SCOPE

1.1 This Schedule ( Part 7 ) covers the technical requirements and informations for wrought carbon, low alloy and high alloy steels for elevated temperature applications used for the construction of steam and water boilers, pressure vessels, turbines, water and steam pipe line as well as other power generating plants. They are delivered as strips, sheets, plates, pipe lines, forgings and forged, rolled or drawn bars as well as blooms and billets.

2 GENERAL

2.1 While preparing Indian Standards, or revising the existing standards, steels listed in this schedule shall be selected. The specification of mechanical properties different from those given in this schedule should not be made unless special conditions of service render this essential. In that event, full reasons for the proposed departure from the steels specified in this schedule shall be submitted to the Alloy Steels and Special Steels Sectional Committee, MTD 16 and its approval obtained.

2;2 The ladle analysis of the steels is given in Table 1. These steels have an Increased resistance

to creep due to their alloy contents. The permissible deviations between analysis and product analysis are given in Table 2 and the heat treatment schedule is given in Table 5.

2.3 These steels are suitable for hot working and cold forming operations and they may generally be welded by the usual welding processes. The hot working characteristics of austenitic steels should be noted.

2.4 In addition to defining the composition limits, the specified mechanical properties appli- cable to the different conditions are included. Table 3 gives the mechanical properties at room temperature and Table 4 gives proof stress at elevated temperature. Table 6 ( for guidance only ) include the data for steels for average creep stresses for 1 o/o elongation and rupture stresses for 10 000, 30 000, 51 000, 100 000, 150 000, 200 000 and 250 000 h.

2.5 The specified mechanical properties are appli- cable to test samples taken from a standard location which should he included in the specification.

Type of Steel

Table 1 Type of Steel, Chemical Composition and Typical Forms

( Clause 2.2 )

Chemical Composition, wt. y’ Typical Form

(1) 1) Fe360H

2) Fe4lOH

3) 12C7H

4) 18ClOH

5) 16Mo3H

6) 15Mo6H

7) lOMo6H

N 8) 20Mo5H

9) 12Cr4Mo5H

10) 12Cr2Mo5V2H

11) 12Cr9MolOH

12) lOCr36MolOH

13) 4OCrMoH

14) 21CrMoVH

15) 40CrMoVH

16, 20CrMoVTi BH

17) 25Cr2MoVH

18) 20Cr2MoVH

19) 12Cr13H

#.-------4-_------ ______ -__-----*---a--- _-___ -.--I_--- .____ --v----e

C Si Mn Cr MO

(2) 0 20 Max

(3) 0’10 to 0’35

0.10 to W35

0.10 to 0’35

(4)

0’40 to 1’20

U’50 tc, 1’30

0’40 lo 1 %Jo

P S Max Max (5) (6)

0’03 0.03

0’04 o-03

0,045 0’045

(7) (8) 0.25 Max 0'10 Max

Ni V

(9) (10)

0’30 Max --

Others’

0’20 Max 0.25 Max 0’10 Max

0’17 Max W25 Max -

0.30 Mu - -

0.35 Max -

(12)

cu 0.30 Max

Cl1 0’30 Max

CU 0’30 Max

0’15 to 0’22

0’12 to 0.20

0’10 to 0.35

0’10 to 0.35

0.60 to 1’40

0’40 to 0’80

0.045

0’04

0’045

WO30

0’04

0.040

0’040

0’040

0.040

0’035

0’030

0’030

0’03

0.030

0’030

0’040

0.045

0’04

- 0’35 Max -

0.30 Max 0.25 to 0.35

0.35 Max -

CU O-30 Max

CU 0’30 Max Al met 0’02 Max

o-10 to 0.20

@I5 Max

0’15 to 0.25

0’10 to 0’50

0’50 to 1’00

0’10 to 0’35

0’30 to 0’80

0.30 to 0.60

0’90 to 1’40

0’045

0’030

0.04

-

1’00 to 1’50

O-30 Max

0’44 to 0 65

0.45 to fJ.60

0’40 to 0.60

- -

0.30 MUX -

0’10 to 0’10 to 0’40 to 0’18 0.35 0’70

0.70 to 0’45 to 1’10 0’65

-

0’10 to 0.18

0’08 to 0’15

0.15 Max

0’30 to 0’60

0’040

- 0’22 to - 0.32

- -

- -

Cu 0.30 Max Al met 0.02 Max

Al met 0’02 Max aeam

Al met 0.02 Max Al met 0.02 Max Al met WO2 Max

0.35 to 0’45

0.17 to 0.25

0.86 to 0’44

0’17 to 0’24

0’10 to 0’35

0’10 to 0.50

0’25 to 1’0

0.10 to 0’35

0’40 Max

0’10 to 0’35

0’35 Max

xz to

0’30 to 0’70

0’30 to 0.60

0.40 to 0’70

0.40 to 0’80

0.45 to 0’85

0’5 Max

0’030

0’035

0’03

0’03

:z to 1’90 to 2.60

8.00 to IO%0

1.00 to 1’50

1.2 to 1’50

0.9 to 1’2

Y:E to

0’90 to 1’15

0.90 to 1’10

0.50 to 0.80

0.65 to 0 80

::75z to

0.8 to 1’10

0’60 Max 0’25 to 0.35

0.25 to 0’35

0’50 Max 0’7 to 1’0

0’20 to 0’30

0’20 to 0’30

0.09 to 0’15

0’20 to 0’50

0’20 to 0’50

1.00 Max

0’30 to 0’60

0’30 10 O’GO

1’00 Max

0’025

0’030

0’030

1’5 to I’80

1.5 to 1.80

11’5 to 14WI

0’90 to 1’20

0.60 to 0’80

-

0*40 Max 0.20 to 0’30

0’40 Max W20 to 0.30

1’00 Max -

w

(11)

-

-

-

-

-

_-

-

-

-

-

-

-

-

-

-

-

-

Ti 0’05 to 0’12 B 0.005

Cl1 0’30 Max

cu 0*30 Mm

(13)

Plates

Plates

Sz;Tless pjpes pipes

with scam

do

Seamless pipes bars forgings steel plates

Steel plate,s

S;;;leo pipes pipes

with plates

Seamless pipes plater

Seamless pipes bars, forgings

Seamless pipes

Bar, forging

do

do

Bars, forgings

Forgings

Bars, forgings

Bar, forging plates

Table 1 ( concluded )

Type of Steel

(1) 20) 12Cr12MoH

21) 12Crl2MoVH

22) 12Cr12Ni2Mo

23) $K$l2MoNi

24) $IC$NiMoNb

25) 7Cr18NilOH

w 26) 3Crl8NillH

27) 6Cr17Ni12 Mo2H

28) 3g317Ni12Mo

29) 7Cr19Nill TiH

30) 7C$rNi I1

31) 1 lCrl7Ni 0.07 to 1.00 Max 13W3TiH 0’15

0’03 to 0’08

1’00 Max

Chemical Composition, wt. y0 Typical Form --------- __-_- ____ -__--*--_--___-_-----~__.__~~-~ ,

C Si

(2) (3) 0’08 to 0’16

0’08 to 0’16

0’08 to 0.16

O-17 to 0.23

0'60 Max

0.60 Max

0’35 Max

0’50 Max

Mn

(4) 0.40 to 1’00

0’40 to 1’00 0’50 to 0’90

1’00 Max

P Ma*

(5) 0.040

0’040

0.040

0’040

8z0 to

0’045

0’045

0.045

0’045

0’045

0’045

0’045

0’045

AL%

(6)

Cr

(7)

MO Ni Others

0’035 11’5 to 13’00

(9) 1’0 Max

V

(10)

0’035 11’5 to 13’00

1’0 Max

(12) (13) - Bar, forging

Bar, forging

0.030 11’0 to 12’5

0’030 11’0 to 12.50

2’0 to 3’0

0’30 to 1’00

N 0’02 Bar, to 0’04

forging plate

- Bar, forging reamless

0.16 to 0’24 “tt& to

0.04 to 075 Max 0’10

0’030 Max 1.00 Max

0’08 Max 1’00 Max

0’030 Max 1.00 Ma%

0’04 to 0’20 to 0’10 0’80

0’04 to 0’75 Max 0’10

0’3 to 0’24

y$o to 10 to 12

(8) 0’40 to 0’80

0’40 to 0’80 1.5 to 2’00

0’7 to 1’20

0’5 to 1’0

0.3 to 1’00

0.10 to 0% 0’25 to 0’40 0’20 to 0’35

0’1 to 0’30

2’00 Max

2’00 Max

2’00 Max

2’00 Max

0.030

0’030

0.030

0’030

0’030

0’030

0’030

0.030

Bin@yoMax Bar forging

Ma; Nb0’2 to 0.50

17.00 to 20’00

- 8’00 to 12’00

17.00 to 19.00 16.00 to 18’00

- Seamless tubes, plates bars, forgings

Plates, forgings seamless tubes

16.00 10 18’00

-

2’00 to 3’00

2’00 to 3’00

9’00 to 13’00 10.00 to 14’00

10’00 to IWO

- Seamless pipes, bars, forgings plates

- Plates,seamless tubes

2’00 Max 17’00 to 20’00

9.00 to 13W

2’00 Max 17’00 to 19’00

- 9.00 to 13%0

-

-

W

(11) -

-

Ti> 4xc< Seamless pipes, 0’60 bars forgings

yob,‘, ps&== Seamlesspipes, . bars, forgings,

plates 1’00 Max 15.5 to

17.50 00.006 0 13’5 to 16’00

- 12’00 to 14.50

2’00 Max forgings 1’00 to 1’50

24.00 to 27’00

2’5 to Ti > 4xc 3’5 <O-80 B

Seamlesspipes,

O*OOO 6 Max bars forgings

O’lOto Ti 1’9 to 0’50 2’30

Bars forgings,

Al met Seamless pipe

0’35 Max B WOO3 to 0’010

Element not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat. All reasonable precautions shall be taken to prevent the addition, from scrap or other materials used in mechanical properties and applicability.

manufacture, of such elements which effect the hardenability

IS 1570 ( Part 7 ) : 1992

Table 2 Permissible Deviation Between Specified Analysis and Prodact Analysis

( Clause 2.1 )

Element

%

CuptoO~25

C above 0.25

si up to 1’0

Mn up to 2.0

P up to 0’05

s up to 0’05

Cr up to I

Above 1 up to 2’5

Above 2’5 up to 1090

Above IO.0

Ni up to 1

Above 1 up to 2.5

Above 10’0

MO up IO I

Above 1

v

cu

Al

Nb

W

Permissible DeviPtions*

f 0’02

f 0’03

f 0’05

f 0’0.5

+ O-005

+ 0’005

+ 0’03

f 0.05

l 0’10

f 0.15

+ 0.03

f 0.05

* O-10

+ O-03

f 0’05

f o-02

f 0’02

f 0’005

f 0’005

+ 0’10

*The deviations, other than when maximum or minimum only are specified, apply either above or below the specified limits of the range but not both above and below for the same element from sample products from the same cast.

4

IS 1570 ( Part 7 ) I 1992

Table 3 Mechanical Properties at Room Temperature

( Clause 2.4 )

Tvue Pro duct Heat’) Thickness Hardnesst) R&23) Rm4)

MPa _-- A-.- ‘Min

(8) 360

Max

(9) 480

% Min

520

480

580 22

590

5%

-

660

448 590

470 620

;t

;z 17

22

30. 21

f :, 19

22

g

18

690

610

610

!E

15

19

610 560 640

E

% 1000

850

16

200

:: 15 20

::

16

1000 950

14 14

15

- 16

-

850

16

:6’

Ab) Bend’) KVQ Test Max D

J MflX

(11) (12) - 0’5 a

-

-

-

-

- -

-

-

-

-

-

-

- -

2a

4a

4a

3a

-

-

3a

-

3a

- -

-

3’5 a

-

- - -

-.. of Treatmdnt mm RB

Up to aod’ Including

(5) 16 40

1:; 150

G

1:: 150 -

(‘3) -

-

HFaN -

16

:; 100 -

-

- -

16

z 100 - 16 40

1::

- - -

-

- - - 16

:: 100

255 -

-

- - -

- -

200

250

100 200

200

-

- - - -

-

-

205-250

-

241-269

900

-

At the average

200 do

600 220

-Miin MPa Bend’)

Steel bver

(4) 3

16

: 100

3

z

1: -

3

2 63 -

- -

3 16

tB

3 16

E!

- -

1:

2

- - - - - -

-

loo -

-

-

- -

410

360

460

(1) 1 Plate (2)

(3)

N (7)

205 195 185 175 170 225 215 205

:z

215

265

260 250 250

Note 8 250

205 205 355 345 345

Note 8

:z 305 305

Note 8

440

440

380 415

510

410 375

275 285 285 285

Note 8

560 540

460

460

275 135 275 275 335 135 390 635

550

460 410 490

% 410 590 850

700

700 850 635 800

680-780 800

420 630

500

550 450

630

El

2 Plate

Quadrangular seamless pipe

Seamless pipe and pipe with seam

Seamless pipe and pipe with seam

Seamless pipes, steel plates

N

N

N,N+T

Bars, forgings Q+T Tuber N+T

Tubes N+T Steel plates N+T

6 7

8

Pipes Plates

9

Bars, forgings

Pipes Plates

N+T Q+T N+T N+T

10

Bars., forgmgs

Pipes

Bars, forgings

Pipes

Bars, forgings Bar?, forgmgs

Bars, forgmga

Bars, forgings

Forgings of tur- bine shafts

N+T Q+T A N+T M+T Q+‘JJ

11

ii 63

2”: -

-

-

12

13 14

15

16

17

:+T Q+T Q+T

- - -

Q+T -

Q+T

N+T

- 18 Bars, forgings

2s 1570 ( Part 7 ) t 1992


TS-- Pr0dlWt

Bend’) Steel

(1)

19 (2)

Bars, forgings plates

Bars, forgings

(3)

A

20

21

22

Bars, forgings

23

24

25

Bars, forgings


Bars, forgings Seamless pipe

Bars, forgings

Tubes, forgings plates

Q+T

Q+T

Q+T

Q+T

Q+ ‘G Q+ Ta

Q+T

Q

26 Tubes, forgings plates

Q

27 Pipes, ban forginga plates

Q

28 Tubes, platen Q

29 Pipes bars, forgings

30 Pipes, bars, forgings plates

Ql Q¶

Q

31 Bars, forgings pipes

hot cold worked S+P

32 Bars, forgings pipes plates

S+P

Heatl) Tkicknese Hudnesst~ ow Treatment mm RR “Rr*

e-d-* ---- I& her

(4)

0;

05

Up to and ’ Including

(5)

160 25

160 25

75

150

1560

250 250

250

(6) (7) (8) (9) (10) - 265 470 670 20

175-235 420 590 780 16

> 192

0’5

-

3 40

3 30

3 40

3 40

-

s 40

5

0’5

285-331 280-330

255-280 265-310

265-310

490 680

585 770

785 930 785 930

590 780 700 900

750 900

195 490 195 490 40

63

30 50

40 63

-

::

60

100

250

63

- 175 175

- -

- -

-

205 205 205

185 185

175-235

-

155 195

205

‘2::

398

220

490 440

510 490

490 448

E

510 490

600

500

248-341 600 900

Rm4) % MPm Min

‘Mh M&

880

930

1 130 I 130

930 I 050

1 050

%

690 640

710 690

690 710

710 690

808

730

ll60

20

15

$

14 II

10

!8 45

El 45

30

::

30

4:;

30 30

30

3:

25

35

15

A5) KW Max

J

(11) 60

40

25

40

27 20

20

-

55

70

40

Bead’) Test

Lx

( 12)

-

-

11 A = Annealed, N = normalised, Q- quenched, T - tempered, S = solution treated, P - precipitation hardened. HF= hot finished

s) In case of dispute, the tensile strength value is deciding.

s, Rp 0’2 = 0’2 O/e proof st?ess.

4) Rm= tensile strength.

w AP elongation after fracture. In case, of bars the values are valid for test pieces with a gauge length of Lo = 5’65 z/S%( So 3 original cross-sectional area ). In the case of flat products, the values are valid for both test pieces either of 20 mm width and 80 mm gauge length or of 12’5 width and 50 mm gauge length.

sl Average of three test results. One individual value may be below the specified value provided if it is not less than 70% of that value.

‘71 KV = impact energy of V-notch teat pieces.

s) Drnaa = maximum diameter of mandrel, a - thickness of teat piece.

91 For thickness > 63 mm but < 100 mm, the value specified for the thickness range > 40 mm but < 63 mm are lowered by 1% for each 5 mm thickness over 63 mm.

6

Table 4 Proo~Stnss at fievated ‘femperatmrem ( @‘or Gui&ace Oaiy i

( Claus 2.4 )

TJ-JP”

Steel

Product lid’) Thickness Treatment

Rp 92 Mftt in MPa at Temperature ‘C mm ------

‘loo 158 280 250 300 500

(14)

139

550 608 650 700 750 800 ,

(61 (7) (8) (9)

-

187

234

237

172 168 150 169 162 144 158 152 141 148 144 136 200 195 174 192 185 165 182 175 162 170 166 157 176 165 145

223 212 195

232 218 200

240 270 210 259

lack of data

230 220 210 259 248 237 200 192 180 248 235 218

108 261

98 363 630 530 670 630

99 92 85 253 245 236

88 79 78 348 334 330

610 500 635 615 lack of data

330 350 460 440 508 480

235 410

to be agreed upon 246 225 380 345

350

(11) 117 117 117 117 137 137 137 137 111

162

153

169 203 135 184

76 224

76 322

336 400 440

400 450

(12) (13) 115 115 115 115

tz 133 133 109 107

159 156

148 143

(15) 06) (17) (18) (19) (20)

164 161 156 151 146 199 194 188 181 174 130 127 124 120 117 177 168 155 148 135

72 69 218 205

75 74 316 311 525 498 410 380 540 506 525 480

:7: 337; 410 380

205 195 305 285

66

189 167 145

71 290 235 456 350 460 403 435 -

350

185 175 - -

-0lW

(4) 3

16 40 63

1:

48 63

-

-

-

-

108

up to ami Including

(5) 16 40 63

100

3 63

180 40

48

40 60

-

-

900

100 500

- -

(1) (2) 1 Plate

(3) N

2 Plate N

Seamless pipes and pipe with seam

Seamless pipea and pipe with scam

Seamless pipes, bars, forgings ateel plater

Tubes Tubes Steel plates Pipes Plates Bars, forgings Pipes, platea, Bars, forgings Pipes, bars, forgings

HF, N

HF, N

N,N+T Q+T

d 6 7 8 9

10

11

12 Pipes

13 Bars, forgings 14 Bars, forgingr 15 Bars, forgings

16 Bars, forgings 17 Forgings

N+T N+T N+T N+T N + T, N+T, Q+T N+T, N +T N+T, Q+T A N + T, N+T,Q+T A N+T Q+T Q+T Q+ J-1 Q+ T, Q+T N+T

18 Bars, forgings N+T

19 Bars, forginga plates A Bara, forgings plates Q+T

(10) 124 124 124 124 145 145 145 145 122

177

167

183 116 150 192

80

230

77 326 575 468 598 580


_---_-- Rp 0’2 Mist in MPa at Temperature “C ------h -- T”

Steel

Product

(1) 20

21

22

23

24

25

26

27

28

00 29

30

31

32

(2) Bars, forgings

Bara, forgings


Bars, forgings

Seamless pipes

Bars, forgings

Tubes, forgings, plates

Tubes, forgings, plates

Pipes plates bars forgings

Tubes, plates

Pipes bars,

forgings

Pipes bars, forgings, plates

Pipes bars, forgings

Pipes, bars, forgings, plates

Heat’) Treatment

(3)

Q+T Q+T Q+T Q+ TI Q+ TI QfT Q

Q

Q

Q Ql QI Q

Hot cold worked s+p

s+p

Thickness mm

r--.~-- Over

(4)

-

-

-

-

-

-

-

Up to and’ Including

(5)

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

-

’ 100 150 200

(6) (7) (8)

480 450

575 555

680 655

560 530

650 600

730 700

132 120 109

lack of data

155 144 132

lack of data

107 103 97

148 144 139

171 162 153

383 373

210 195

590 570

250

(91

180

121

94

134

149

306 350

(10) (11)

410

535

650

480

550

655

93 87

113 107

90 85

130 124

139 133

324

176

555

400 450 500 550

(14) (15)

330 -

450 -

505 400

335 280

390 330

470 480

79 78

600 650 700 750 800 ; ID

(12) (13)

380 360

510 480

610 560

420 380

485 440

580 530

84 81

(16) (17) (18) (19) (20) ,”

250

205

258

315

76

101 89 95 92 90 89 88

80 76

119 114

129 125

275 250

157 155

535 520

74 73

111 107

123 122

226 197

152 143

510 498

72

104

120

71

101

70

99

167

137

465 425 375 305 225

1) A E annealed, N = normal&d, Q = quenched, T = tempered, S = Solution, P = precipitation hardened.

Table 5 Heat Treatment11

( Clause 2.2 )

Tzfpe

Steel

Heat Normalisation Treat_ r--_ _----_-h__----.y ment Tempe- Time of Coolings) Svm- rature Y: Holding

0)

1

2

(‘4 (3)

N 900-930

N 890-920

3 and 4

HF, N 880-940

5 N 900-940

N + T 880-930

9 N + T 900-960

., at Trmpe-

rature

(4) (5)

1 to 2 min In quiet per 1 mm air

Thickness of In quiet plate btrt not air less than 20 min

1 to 2 min In quiet per 1 mm air thickness of pipe wall hut not lens than 20 min

1 to 2 min In qlliet per 1 mm air thickness of forging or pipe wall but not less than 20 min

1 to 2 min In quiet per 1 mm air thickness of plate hut not less than 20 min

1 to 2 min In quiet prr 1 mm air thlckue>s of forging or pipe wall hut not le::s thau “:l !,,ir,

Tempering Stress Relief of Quenching and Tempering --------A-.-- -- Annealing or r_--.--_-- -h_ __.__ -. --7 Tempe- Time of Tempering after Quenching Temperings)

rature Holding Bending or #----A_ - _~ c--_-h---7

“C at Tem- Welding Tempe- Cooling Tempe- Time of rature Holding perature T-_-h___~

Tempe. Time of rature Holding

“C Trmpc- raturc

rat&e “C “C at ‘Tem-

perattIre

(6)

-

(7) (0) 1,‘))

- 600-650 2 min per 1 mm

- - 6OO-GSO Thickness of pla*e but not less than30min

- - 600-6.50 2 min per 1 mm

- - 60~650 Thickcvss of pipe wall bllt not less than 15 min

600-650 1’5 to 2 min 600.6.50 per 1 min thickness of pipe wall

do

600-650 1 to 3 min 600-650 2 min per per 1 min I mm thick- thickness ness but not but not less less than IS than 15 min min

6.10-720 1 to 3 min 660-710 2 min pvr per 1 mm 1 mm thick- thickness ncss hut not hut not 1~ ss Irss thau 15 than 1 ‘> m in miu

(10)

-

-..

-

900-940

-

W-IO-‘WI

(11) (12) (13,

- - -

Oil 6OO-NO - or

water


Type of

Steel

(1)

10

11

12

13

14

15

16

17

18

19

Heat Normalisation Tcmpcring Stress Relief of Quenching and Tempering Treat- r-------- _L_________~ ~_.__-__n__-... ~ Annealing or r-_ -_-----A.___,._ _-._ --_ meat Tempr- Time of Tempe- Time of Tempering Sym- rature “C Holding at

Coohugs) rature Holding after Bending

Quenching Ternprrings) _____h--__-_ ---__ *_-___

b&k’)

(2) (3)

N + T 930-980 Q+r

N + T 900-960 Q+T

A __ 850-950

Tempera- ture

“C

(4)

I to 2 min per 1 mm thickness of forging or pipe wall but not less than 20 min

(5) (6)

For pipes 670-720 in quite air, for forgings of 50 mm thickness in quiet air, above 50 to 100 in compres- sed air and above 100 mm in oil

1 to 2 min per 1 mm thickness of forging or pipe wall but not less than 20 min

do 650-780

1 to 2 min Air 700-800 I to 3 min 760-820 2 min per per I mm 1 mm thick- thickness ness but not but not less less than 15 than 15 min min

N + T 900-f 000 per 1 mm thickness of forging or pipe wall but not less than 20 min

Q+T -

Q + T 900-950 - Air

Q+T+ - - - Q+T* - -

Q+T - - -

N + T 940-970 -_ Quiet air

at Trm- perature

(7’

min 3 h

or Welding- ~---_L---~ Tempe- Time of rature Holding

“C Tempe- rature

(8) (9)

688-740 -

1 to 3 min 730-760 2 ruin per per 1 mm 1 mm thick-

thickness ness but not but not less less than 15 than 15 min min

- - - -

380-680 - 480-650 -

- - - - -

- - - -

690-760 - - -

N + 1’ 970-990

&+T 700-780

- Quiet air 680-700 - - -

- Air - - - -

Tempe- rature

“C

(‘0)

975-l 000

930-l 030

-

Cooling’ ‘Tempe- Time of rature Holding

“C at Tem- perature

(11) (12) (13)

Oil 730-750 -

Oil 650-760 - 08.

water

- -

840-870

920-980

Oil 600-700 -

Air 680-740 min 2 h Oil

880-950 Oil 670-720 - 940-970 Oil 600-700 -

- - -

870-900 Oil 600-700 ruin 2 h

950-I 000 Air, 700-750 min 2 h Oil

20

21

22

23

24

25

26

27

28

29

30

31

32

33

Q+T - Q+T - -

Q+T - -

Q+TI - -

Q+T2 - -

Q+T - -

Q -

Q -

Q -

Q -

g: z Q -

Hot cold - worked at about 750°C

s+p -

s+p -

- - -

-

-

-

-

-

-

-

-

- -

-

-

-

- -

-

- -

-

-

-

- - -

-

-

- -

749-780

740-780

-

-

-

-

-

-

-

-

-

-

-

-

970-l 020

1 050 f 10

1 035-I 065

1 020-l 070

I 020-l 070

I 109.1 159

9W1199

950-I 109

I 100-l 100

850-l 109

1 070-I 140

950-I 070

950-I 190

1 109-l 150

980f 10

Oil 650-750 min 2 h

Air, 650-700 oil

Oil 600-700

Air, 680-746 oil, water

do 649-790

Air, 670-750 Oil

Oil, - air, water

Air, - water oil

Air, -

$;p;JJ;; ,

Air, water - oil

do -

do -

Air, water - oil

-

-

min2h

min 2 h

min 2 b

-

-

Air, 759-800 - water

Oil, 720 f 10 - water

l Q + Ts would apply to sixes up to 100 mm, Q + Ta to sizes above 100 up to 200 mm.

1) Except in cases where test samples are to be reference heat treated, the indications in this table are for guidance only.

1) A = annealed, N = normalird, P = precipitation hardened, Q = quenched, S = aolution treated, T = tempered.

s) If a stress relief treatment is necessary, the stress relief temperature should be at least 30% lowar than the temperiog temperature.

‘bble 6 Stress Rupture Properties at Eievatd Temperatures ( For Guidance Only )

( Clam.9 2.4 )

=oT He*t Time EmtJmrted Average Stress for Rupture’), IMP=, Temperature “C Treat_ HO-m ----- _ -__--_--_--- e--_-w--w- h-----------__-__-.--~-~-~~-_-____~

Steel mcnt 380 390 400 410 420 430 440 450 460 470 480 490 500 510 520 530 540 550 560 570 580 590 600 S)%lhOl

(1) (2) (3) (4) (5) (6) (7) (8) (9) (IO) (11) (12) il3) (14) (15) (161 (17) (18) (19) (20) (21) (22) (23) (24) (25) (26)

1 N 10000 213 197 166 151 138 125 112 and 30000 192 176 tz 147 133 120 lo7

iii ‘ii ;z

67 l 3E

2 50000 183. 167 152 138 125 112 100 77 66 50. :2* 35. JO0 000 171. 155. 141* 127t 114. 102. 90. 78. 67’ 57. 47’ 36. 150000 164’ 149. 134. 121+ 108’ 96, 84’ 73. 62. 52. 41. 29. 200 OCK) 159. 144’ 1305 116. 104’ 92. 80. 69’ 50’ 48. 37’ 23’ 250000 155. 140’ 126* 113’ 101. 89. 77. 66. 55’ 45. 34’

3 N

is 4 N

HF

10000 221 30 000 192 50000 181.

100000 164’ 150 000 153’ 200 000 146. 250 000 1402

201 175 163. 145.

t:S* 3 l

123.

181 164 148 157 140 124 145’ 128. 112. 127. llO+ 940 1195 101. 84’ 111+ 93’ 77’ 1042 86. 72*

132 IOU 97’ 7Y’ 71. 64’ 59.

118 9.t 82. 68. 59. 53. 49.

104 81 701 56’ 48. 44* 401

91 ii: 68 59 51 70 51. 43+ (36)* 5Y* 50* 43. 365 (30)* 46+ 3Y* (33)* 40. (34)* (28)’ - -

(36)* (30)* (33)* (27)* - 1 r

5 N N+T Q+T

8 N+T lack of data

9 N+T Q+T

10 000 30 000 50 000

100 000 15olmu 200 000 250 000

10000 279 30000 251 50 000 237

100000 211, 150000 196. 200 000 185’ 250 000 177.

10000 30 000 50 000

100000 150000 200000 250 000

254 224 206 182*

;i;+ l

156+

229 206 197 174 179 158 157’ 135’ 144. J24* 135+ 114* 127* 106.

fE 137 117. 104. 95+ &8*

163 133 119 100+ 87. 79. 75.

145 117 103 aa+ 75* 692 64’

127 101 88 83+ 66+ 59f 551

298 273 2602 239’

;:g

210+

113 100 88 78 71 88 i: 68 60 (52)

E* 59 (52) (45)

50, (45)’ - - (56). (48)‘. . - - (50)*, - - - - (46)+ - __ - -

273 247 220 196 171 147 244 216 187 150 134 113 229. 208’ 172 144 119 99 208’ 178+ 140* 123+ 101 81 197. J68* 139* JJ4* 91. 74+ 188. 159* 130+ 105* 84’ 69+ lOO+ 151* 124+ lOO+ 68* 65.

304 273 239

267 233 239 207 :z 210 177 146 194* 161+ 132. 180+ 148’ 122* 170* 139’ 114.

209 i69 149 121 108’ 99. 91’

125 102 82 64 93 76 61 49 80

& 48’ (39P - 55+ 45’ (36jS - 52. (42). (33)* -

179 154 129 109 91 76 64 53 44 140 I16 96 79 66 54 44 36 (29) 124 101 82 68 55 45 - - - 99 81 67 54 43 35 - - - 07* 71 57 46 38 (31) - - -

:;: 64. 59. 52+ 48’ 42, 39+ 34+ 32* (28)* (26)* - - - - - -

fS 1570 ( Pmrt 7 ) t 1992

Table 6 ( ronhud ,

Type Hed Tfmt EstIm.tcd Arrngc Strms for RuPawr% MPm, Trmpcr.tmre “C of Tre.t- Holrs ~_--~--_---__---------.----___-----------

stcc, rmC¶lL 380 3% 4oa 410 420 430 440 *----- _____ - _.-_____ ___-________________ ,

4% 4Ml 470 4ao 4% 500 510 520 530 540 55o 560 570 SylUbOl

590 590 6oo 610 620 690 MO 650 660

(I) (2) (3) (4) (5) (6) (7) (R) (9) (IO) (11) (12) (19) (14) (15) (16) (17) (la) (19) (20) (21) (22) (23) (24) (25) (26) (27) (28) ,(29) (30) (91) (92)

610 620 690 640 650 660

IO N+T IO ooo

Q+T 9OCGl 929 268 241 219 198 179 I64 148 194 121 loa 95 78

Mooa 261 292 209 I87 1% I52 195 I21 107 99 80 67 Go)

loOOOO 249 217 193 172 I59 I96 I21 107 92 78 66 - -

15oooo 2la I91 170 I50 191 116 loo a5 72 59 (46). - -

2ooooo 205 179 156 I96 II9 101. 85. 70. 57’ (45). (95). - -

25ilm 194. 169’ 146. 127* 109. 9l* 76. 6l* (48). (37). (28). - -

185* 160* 19w ll9* 1010 890 6a* 54. (42). (92). - - _

I1 A IO ooo 25,* 2368 221. 2% I91 177 I62 I47 199 121 lo8 96 a5 76 68 61

N+T 30000 226* 211 I%* IllI 166 I53 139 126 II9 lol a9 78 70 61 54 48

5oow 211. 197. IaS* 170’ l56* 142. 128. 1160 104 32 a1 71 62 54 47

looooo 1%. 182. &a* 154. 141. l27* IW ,020 99. 70. 69. 59 51 44 (3s). ($

15OOOO 193. l77* 161. 145’. 129. 116’ 109. 91. 79’ 71. 620 54. 46’ 408 (35). Pm*

2oomnl I%* 170. 154. 1980 123. 1100 970 85. 75* 66. 580 50. 49. (97). (92). (28).

25ooflo lal* 165. I49* 132. lla* 1050 99. aI* 72. 69. 54. 47. 40’ (95). (3o).’ (26).

N+T IO 0% 309. 285. 263. 240 219 196 I76 I55 137 122 lo8 % a5 76 68 61

30 ml 276* 2549 239* 219 192 172 I52 194 II8 IO9 90 79 70 61 54 48

Mew 257’ 2%. 217. 197. 1778 I%* l99* 123. l07* 99 80 71 62 54 47 42

Q+T IMIOOO 221. 20). l%’ l70* 159* l97* 122. l07* 93 79 69 59 51 44 (38) (34).

15OKlJ 209. 1920 175. 1%. 141. 126. llO* 95* 82. 73* 638 54* 47 40 (33) (SOP

2wooo 209. I%* 169. 152. 134. 119* 109* 89. 77. 68’ 588 50. 43 (97). (32). (28).

25ooccl I%* laI* 164. 147* I%* 113* 98. 848 749 64* 55. 47. 41. (35)’ (90). (26).

12 A 10 ooo Iai I61 I42 127 I12 99 a6 76 67 58

3oocm

50 (44). (38) 39 28 25

139’ 137. 121. IO,* 90. 79. 69* 60. 520 45. Sa* 99.

5oooa

28’ 25. 228 19.

1470 1270 Ill* 950 a2* 739 620 590 46. 99. 39’ 28. 25* 21. la* (l6)*

IOOWO 131. 119. %* 83. 72* 62* 59. 45* 380 92. 27. 23. 20’ (17). (II). (II)*

1500% 123. 105. 90. 76. 65. 56. 478 408 939 280 24. 21. (17). (15). (19). -

2ooooo 116. 99’ 84. 72* 61. 52’ 44. 97* 91’ 25. 22. 19. (16). (14). - -

2xlrml III. 95. ao* 6a* 5a* 498 41. 340 280 2.50 210 (17). (15p - - -

IO wo 224 199 177 157 198 I21 I04 91 79 69 60

90 ooo

51 ti 3a 33 28 z5

197. 174. 142. IS3 II6 1% a5 74 63 54 46 99 34 29. 26.

Moo0

220 (lap

185. l62* 141. 129. I%* 90. 77’ 67. 57. 47. 41. 33. 29. 25. 19. (la). (16).

moooo 167. 144. 124. I%* 910 780 66. 57e 47. 40. 34* 2a* 248 21

l5OOlW

(17). (15). (12).

156. I%* 117. I%* 85. 74. 62. 52. 43* 36* SO* 30. 25. 22. (la)* (16). (13)

2ooooo 150’ 129. 111. 94. 80. 69. 57* 48. 40* 33’ 27.

2Moml

24’ 20. (17). (II)* - -

145. 125. 1%. 90. 76. 65. 54. 43. 97. 31’ 26* 22. 19. (16). (IS) - -

17 and IO ooo 370 452 434 412 9% 961 991 2% 262 235 210 la5

I8

169 I41

IM)o% 944 374 352 928 309 271 218 219 la7 159 194 II2 94 75

13

IS 157lJ ( Part 7 ) I 1992

Table 6 (confinutd )

VP”

Stnl

(1)

13

14 QfT

I5 QfT

I6

19

Q+T

A

Q+T

20 Q+T

21 Q+r

22 Q+T

23 Q+ TI Q+ T,

24

31

Q+T

Hot Cold

Worked

s+p

32 S+P

Tima liowu

(3)

10 O@l

100000

10 ml lOOMlo

10 000

100000

10000 100000

10 000

lOoOel

10000

10 000

IO 000

100 OI

10 000

IwO%

IO 000

10 co0

lOOOO+l

IO 000

10 wo

355 230 I40

2aa 170 74

lack of data

123 - 29

78 - 25

1wr w, 40’) 80’) 5eJ 25’1

137 36 39

4%

373 289 165 79

221 1% 44

347 245 137

16-S

579 441 324

(a) (9) (10) (II) (12)

478 247

347 136

405 2a2

323 la5

494

371

2%

170

4a0

432

59

109 74 45

196 98

5%

(13)

90

600

(14)

163

93

127

191 123

2w1

12(r) 130’) 75’)

98

2ca

157

102

211

137

274

373

284

69 47

w,

45’)

2%

270

347

215

3%

275

392

460

392

44

92

96

57

103

59

157 69

226

137

191

608 4% 363

(15) (16) (17)

127 68 68 29

I35 ml

216 127

67

14

Table 6 ( roncludtd )

IS 1570 ( Part 7 ) : 1992

“‘P’ Hat Time E.tlmnerd Avemge Screw for Rupt.te’,, MPa, T*mper.twe “C Trmt- HO_” _________-_-e-e--- ---- - ------ --- ---* -- - r_ ___ --------.-_-_-_--__-___._____ _____

Steel meat 610 620 630 640 650 660 670 680 690 700 710 720 p--7

730 740 750 Symbcw

(1) (21 25 Q

26 Q

27 Q

28 Q

29 Q

Q2

30 Q

(3) IO coo

2Qom

5oow looooa

WJOM)

2oowl

25om

IO CQO

30 OOQ

5olm

lrmooo

15ooim

mooo

25oUoo

(4)(5)(6)(7)(8)(9)(10)(i1)(l2l(l3)(1))(15~(~6)(l7~l~8)~lQ1~2") 121) (22) (23) (24) (25) (26) (27) (28) (29) (30) (31) (32) (33) (34) (35) (36) (37) (38) (39) (.Io) 141) 176 l6& 157. I42 131 122 113 104 95 87 79 73 67 61 55 48

147. 135. 126. llS* 105. 96' 88. 80' 74' 67. 61 55 50 44 (40)' 05).

134. 1239 113. 103. 94. 85. 709 72' 65. 58. 52' 47' 419 (36)* (82)~ (27).

115. 105. 98* 89. 81. 74* 68. 61. 55. 50. 45. (40)' (35). (30). 126)' 123).

108. 99. 89. 81' 748 67* 6O* 54s 49. 43' (39). (34). (30). (36)' (231' (20)'

102. 93. 84' 76* 69. 62. 56. 50' 45. (40)' (35). (31). (27). (24). (21,. -

978 88. 79. 73. 66' 59. 58‘ 478 428 (37). (33). (29). (25). (22,. - -

lack ofdrtn

260 245 228 211 195 179 I64 149 136 123 III 91) 89 8o 74 65 59 53 48 44 39

243 224* 204. 187* 171' 155 139 125 II2 IO0 89 79 72 64 57 51' 46 41 378 33* 30*

226. 208' 192* 175' l58* 142 128 II5 103 91 80 72 63 56* 50 45' 40' 36' 32. 29. (26). 1%' ,800 160' 147* 132. 118; 106. 96' 86* 76* 69. 6Q* 53. 46' 41* 37' 33; 30* 27* (25,' (?3)*

l87* 171. l52* 139. l24* 110' 97. 86. 76. 68* 60. 53. 47' 41* 36; 3L* 28' (25). (24). (2,). -

l8l* l65* 146' 1339 116' 103. 91. 8o* 71. 63. 56* 498 43* 38* 33' 29. (26)' (24)* (22)* (20)* -

1768 159' 14V 1279 110' 97. 86* 76. 67. 59' 52* 46* 40* 35* 31' 28' (25)' (23)* (21)' (19;* -

Iackofdata

197 182 170 157 145 134 124 II4 lo4 95 86 77 (70)' (63)

167' I.54 I42 130 120 109 99 90 82 75 (67)' (60,. (53)' (47)*

1548 142. l3O* 120. 110' 100' 91* 828 75* (67)' (6U)' (54)* (47). (42).

137' 126. ll6* 1%. 97* 88' 788 71. (64). (57). (50). (44)' (39). (3~

130* 119‘ 1o9* 99* 89* 80. 73. (65). (57). (XX* (44)* (38,' (33)* -

125. 113* 103. 93. 84' 76' (68)* (60)' (53). (46)' (4O)* (35). (30). -

120' iOQ* 99. 89* 800 72. (64)' (57). (50). (43;* (37); (32)' - -

I85 170 156 142 130 120 II0 lol 92 82 74 65 (S7,* (48)*

154. 141 128 118 107 98 88 79 71 61 (53)' (46) (40)* (34)*

l39* 127* ll7* l07* 978 87* 77. 698 6O* (52)' (44). (37). (37)* (27)*

l23* ll2* lO2* 92* 8L* 74* 64' (55). (47). (40,' (36). (31)' (27). (23)'

112' 102. 93* 83' 738 64. 55* (47)' (41)* (35)' (30)* - - -

106' 968 86* 76* 67* 589 (50)* (43,* (37). (32)' (27)' - - -

lOI* 92. 818 72' 62. (54). (46). (40)' (34). (29)' - - - -

243 228 215 2M) 186 173 159 146 134 I24 II4 104 95 86 77 69 61 54 46

210. Isa I84 172 I59 I46 133 123 112 102 92 83 74 66 58 51 44 38 (33)

1%. 185. 172. 159' 146 133 123 III IO1 91 82 74 66 58 5, +I 39 (33)' (28)

l8,* 168' 154. 142. 129' 118 106 96 86 77 69 61 53 46 40' 35. (30)' (25). (22).

l7l* l58* 145' 132' 121' 109. 98* 88* 7')* 76. 639 55. 48' 42' 36' (32). (28)* (24). -

1609 l5,* 138' 1279 ll4* 103* 938 831 75' 66* 58* 51. 4t* 38. (33)' (29)' r25i* r22)* -

159' 146. 133' 122. 110' 99* 88. 79' 71* 63' 55. 48. 41 36* (31)' (271' - - ,25,*

Bureau of Indian Standards

BIS is a statutory institution established under the Bureau ofIndian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country.

Copyright

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This Indian Standard has been developed from Dot : No. MTD 16 ( 3335 ).

Amendments Issued Since Publication

Amend No. Date of Issue Text Affected

-

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Headquarters:

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Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg NEW DELHI 110002

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