GRADES

S.No.
Indian Steel Grade
Equivalent International Steel Grades
Chemical Compostion Specifications
IS
SAE
DIN
JIS
C%
Mn%
Si%
S%
P%
Cr%
V%
1 C-50 SAE-1050 0.47-0.55 0.60-0.90 0.15-0.35 0.030 Max. 0.035 Max.
2 55C6 SAE-1055 CK-55 0.50-0.60 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max.
3 C-60 SAE-1060 0.55-0.65 0.60-0.90 0.10-0.35 Max-0.050 Max-0.050
4 65C6 SAE-1065 C-67 0.60-0.70 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max.
5 70C6 SAE-1070 0.65-0.75 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max.
6 75C6 SAE-1074 CK-75 0.70-0.80 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max.
7 80C6 SAE-1080 0.75-0.85 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max.
8 85C6 SAE-1085 0.80-0.90 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max. Max-0.30
9 98C6 CK-101 0.90-1.05 0.50-0.80 0.10-0.35 0.050 Max. 0.050 Max. Max-0.30
10 50Cr4V2 SAE-6150 50CrV4 SUP-10 0.47-0.55 0.70-1.10 0.15-0.35 Max-0.040 Max-0.040 0.90-1.20 0.10-0.20
11 51CrV4 0.47-0.55 0.80-1.10 0.15-0.35 Max-0.040 Max-0.040 0.90-1.20 0.10-0.20
12 C-120 SKS-81 1.10-1.30 Max-0.50 Max-0.35 Max-0.030 Max-0.030 0.20-0.50
13 SAE-1086 SK-5 0.80-0.90 Max-0.50 Max-0.35 Max-0.030 Max-0.030 Max-0.30
14 SAE-1095 SK-4 0.90-1.03 Max-0.50 Max-0.35 Max-0.030 Max-0.030 Max-0.30
15 75Cr1 0.70-0.80 0.60-0.80 0.25-0.50 0.050 Max. 0.050 Max. 0.30-0.40

 

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