GRADE

S.No.
Indian Steel Grade
Equivalent International Steel Grades
Chemical Composition Specifications
American
European
England
Germany
Japanese
IS
SAE
EN
BS
DIN
JIS
C%
Mn%
Si%
P%
S%
Cr%
Cu%
Ni%
V%
Others%
1 C 40 SAE 1040 C 40 EN 8 C 40 S40C 0.35 – 0.45 0.60 – 0.90 0.15 – 0.35 0.040 max. 0.040 max. – – – – –
2 45C8 SAE 1045 C 45 – C 45 S45C 0.40 – 0.50 0.60 – 0.90 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
3 – SAE 1050 C 50 EN 43 C 50 S50C 0.47 – 0.55 0.60 – 0.90 0.10 – 0.35 0.045 max. 0.045 max. 0.40 max – 0.40 max. – Mo – 0.10max.
4 55C6 SAE 1055 C55S EN 9 C 55 S55C 0.50 – 0.60 0.60 – 0.90 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
5 – SAE 1060 C60S – C 60 S60C 0.57 – 0.65 0.60 – 0.90 0.10 – 0.35 0.045 max. 0.045 max. 0.40 max – 0.40 max. Mo – 0.10 max.
6 65C6 SAE 1065 – EN 42B C 62 S65C 0.60 – 0.70 0.50 – 0.80 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
7 70C6 SAE 1070 C67S – C 67 S70C 0.65 – 0.75 0.50 – 0.80 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
8 75C6 SAE 1075 C75S EN 42C C 75 – 0.70 – 0.80 0.50 – 0.80 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
9 C75-Cr25 – – – – – 0.70 – 0.78 0.60-0.80 0.35 max 0.035 max 0.030 max. 0.15 – 0.27 – – – AI – 0.010 – 0.040
10 – – – – 75Cr1 – 0.70 – 0.80 0.60 – 0.80 0.25 – 0.50 0.030 max 0.030 max. 0.30 – 0.40 – – – –
11 80C6 SAE 1080 – EN 42J C 80 – 0.75 – 0.85 0.50 – 0.80 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
12 85C6 SAE 1085 – EN 42D – – 0.80 – 0.90 0.50 – 0.80 0.10 – 0.35 0.050 max. 0.050 max. – – – – –
13 – SAE-1086 C85S – – SK85 0.80-0.90 0.50 max. 0.35 max. 0.030 max 0.030 max 0.30 max. 0.25 max 0.25 max – –
14 – SAE-1095 C100S EN 44D CK 101 SK95 0.90-1.00 0.50 max. 0.35 max. 0.030 max 0.030 max 0.30 max. 0.25 max 0.25 max – –
15 50Cr4V2 SAE 6150 51CrV4 EN 47 50CrV4 SUP10 0.47 – 0.55 0.70 – 1.10 0.15 – 0.35 0.040 max. 0.040 max. 0.90 – 1.20 – – 0.10 – 0.20 –
16 – – – – 58CrV4 – 0.55 – 0.62 0.70 – 1.10 0.10 – 0.40 0.035 max. 0.035 max. 0.90 – 1.20 – – 0.10 – 0.20 –
17 – – C120U – – SK120

1.15 – 1.25

 0.10 – 0.50 0.10- 0.35 0.030 max. 0.030 max. – – – – –
18 – – 125Cr2 – – SKS 81

1.10 – 1.30

 0.50 max. 0.35 max. 0.030 max. 0.030 max. 020 – 0.50. – – – –

 


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