July 18, 2002

Comparison of Grades of Steel Specified in the Indian Standards withNearest Equivalent Grades Specified in other National Standards

1 Ball and Roller Bearing Steel IS BS DIN SAE

Current Obsolete Obsolete Current Obsolete Current Current4398:1994 1570 970:1956 970-1:1983 EN ISO

683-17:199917230:1980 EN ISO

683-17:1999J404:1994

Chromium Steel104Cr6 105Cr1 En 31 535A99 100Cr6 100Cr6 100Cr6 E521002 Case Hardening Steels

IS BS DIN SAECurrent Obsolete Obsolete Current Obsolete Current Current

4432:1988 1570,4432,5517

970:1956 970-1:1983 EN 10084:1998 17210:1986 EN 10084:1998 J403:1995J404:1994J1268:1995

Carbon Steels10C4 C10 En 2E, En

32A045A10,045M10

C10E, C10R

C 10, Ck 10

C10E, C10R

1010,1012

15C8(Class 1A)

C15Mn75 En 32C 080A15,080M15

C16EC16R

C16EC16R

1018

20C8(Class 2)

C20 3D 070M20 - - - 1018,1019,1021,1022

Chromium Steels15Cr3 15Cr65 En 206 523H15,

523M1517Cr3 17Cr3 17Cr3

Chromium-Manganese Steels16Mn5Cr4 17Mn1Cr95 590H17,

590M1716MnCr5 16MnCr5 16MnCr5

20Mn5Cr5 20MnCr1 20MnCr5 20MnCr5 20MnCr5 Nickel-Molybdenum Steel20Ni7Mo2 665H20,

665M20 4620,

4620HNickel-Chromium-Molybdenum Steels20Ni2Cr2Mo2 En 362 805A20,

805H20,805M20

20NiCrMo2-2 20NiCrMo2 20NiCrMo2-2 8620,8620H

15Ni5Cr4Mo1 15NiCr1Mo12 En 353 815H17, 815M17

20Ni7Cr2MO2 4320, 4320H

3 Free Cutting SteelsIS BS DIN SAE

Current Obsolete Obsolete Current Obsolete Current Current4431:1978 1570,

4431970:1956 970-1:1983 EN 10087:1999 1651:1988 EN 10087:1999 J403:1995

11C10S25 11S25 En 1A 220M07 10S20 10S20 10S20 14C14S14 14Mn1S14 En 32M 214A15

214M1515SMn13 15S10 15SMn13 1118

1 Steels for Quenching and Tempering, and Flame and Induction HardeningIS BS DIN SAE

Current Obsolete Obsolete Current Obsolete Current Current5517:19933930:1994

1570,39305517

970:1956 970-1:1983 EN 10083-1:1991EN 10083-2:1991

17200:1987 EN 10083-1:1996EN 10083-2:1996

J403:1995J404:1994J1268:1995

Carbon Steels30C8(Class 3)

C30 En 5, En 5A,En 5B,En 5C,En 5D,En 5K

080A30,080M30,080A32

C30, C30E,C30R

C 30,Ck 30, Cm 30

C30, C30E,C30R

1029, 1030

35C8(Class 3A)

C35Mn75 En 8A, En 8B

080A35, 080M36, 080A37

C35, C35E, C35R

C 35, Ck 35, Cm 35

C35, C35E, C35R

1035

40C8

C40 En 8, En 8B,

080A37,080A40,

C40, C40E,

C 40,Ck 40,

C40, C40E,

1038, 1038H,

En 8C,En 8D,En 8K

080M40,080A42

C40R Cm 40 C40R 10391040

45C8(Class 4)

C45 En 8D 080A42,080M46

C45, C45E,C45R

C 45,Ck 45, Cm 45

C45, C45E,C45R

104210431045, 1045H, 1046

50C8 C50 En 43A, En 43B,En 43C

080A47,080M50

C50, C50E,C50R

C 50,Ck 50, Cm 50

C50, C50E,C50R

1049,1050,1053

55C8(Class 5)

C55Mn75 En 9, En 9K,En43C

080A52,070M55,080A57

C55, C55E,C55R

C 55,Ck 55, Cm 55

C55, C55E,C55R

1055

High-Manganese Carbon Steels37C15 37Mn2 En 15,

En 15A150M36,150H36

1541, 1541H

Chromium Steels40Cr4 40Cr1 En 18,

En 18D530A40, 530H40, 530M40

41Cr4 41Cr4 41Cr4 5140, 5140H

Chromium-Molybdenum Steel42Cr4Mo2 40Cr1Mo28 En 19A,

En 19B,En 19C

708A40708M40

42CrMo4 42CrMo4 42CrMo4 4140,4140H,4142.4142H

5 Spring Steels IS BS DIN SAE

Current Obsolete Obsolete Current Obsolete Current Current2507:19753431:1982

1570 970:1956 - 970-2:19885770:1981

- 17221:198817222:1979

J403:1995J404:1994

Carbon Steels65C6 C65 En 42B,

En 43E- 080A67 - - 1065

70C6 C70 En 42,En 42C

- 070A72,70

- C 67,Ck 67

1070

75C6 C75 En 42C - 070A78 - C 75,Ck 75

1074,1075

80C6 C80 En 42 - 070A78,80

- - 1080

Low Alloy Steels50Cr4V2 50Cr1V23 En 47 - 735A51,

735H51- 51CrV4 6150,

6150H6 Structural Steels

IS BS DIN SAECurrent Obsolete Obsolete Current Obsolete Current Current

2062:1992 226 - - - - - -Unalloyed Structural SteelsFe 410 W A St 42 - - - - - -7 Valve Steels

IS BS DIN SAECurrent Obsolete Obsolete Current Obsolete Current Current

7494:1981 - 970:1956 970-4:1970 EN 10090:1998 17480:1992 EN 10090:1998 J775:1993

Martensitic Valve SteelsX43Cr9Si3 - En 52 401S45 X45CrSi9-3 X45CrSi9-3 X45CrSi9-3 S65007 (Sil 1)Austenitic Valve SteelX53Cr22Mn9Ni4N - - 349S52 X53CrMnNiN21-9 - X53CrMnNiN21-9 S63008 (21-4N)

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