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Cold Rolled Steel Strips

Steel Grades

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Hard Strips (India) offers the following spring steel materials :

Grades
C %
Mn %
Si %
(Max)
S %
(Max)
P %
(Max)
Cr %
V %
Ni %
Mo %
C 45
0.42-0.50
0.50-0.80
0.4
0.045
0.045
C 50
0.47-0.55
0.60-0.90
0.4
0.045
0.045
C 55
0.50-0.60
0.60-0.90
0.35
0.025
0.035
C 65
0.60-0.70
0.60-0.90
0.35
0.025
0.035
C 75
0.70-0.80
0.60-0.90
0.35
0.025
0.035
C 80
0.75-0.85
0.60-0.90
0.35
0.025
0.035
SK85
0.80-0.90
0.10-0.50
0.10-0.35
0.03
0.03
max 0.30
max 0.25
SK95
0.90-1.00
0.10-0.50
0.10-0.35
0.03
0.03
max 0.30
max 0.25
C 98
0.95-1.05
0.30-0.60
0.10-0.35
0.04
0.04
C 120
1.10-1.30
0.30-0.60
0.25
0.03
0.03
0.20-0.50
50CrV4
0.47-0.55
0.70-1.10
0.40
0.035
0.035
0.90-1.20
0.10-0.25
75Cr1
0.70-0.80
0.60-0.80
0.15-0.35
0.03
0.03
0.30-0.40
75Cr25
0.70-0.78
0.60-0.80
Max 0.35
0.03
0.04
0.15-0.27
75Ni8
0.72-0.78
0.30 – 0.50
0.15 – 0.35
0.025
0.025
max 0.15
1.80-2.10
max 0.1

International Cross Reference
USA
Germany
Euronorm
Great Britain
United Kingdom
Japan
India
Russia
SAE/AISI
DIN 17222
EN 10132
BS 1449
BS 970
JIS
IS 2507
GOST
1045
CK 45
EN 8D
S45C
45C 8
45
1050
CK 50
CS 50
S50C
50
1055
CK 55
C55S
EN 9
S55C
55C 6
55
1060
CK 60
C60S
CS 60
S60C / SUP11A
60
1065
EN 42F
S65C / SK7
65C 6
65
1070
CK 67
C67S
CS 70
S70C
70C 6
70
1074/1075
CK 75
C75S
EN 42J
S75C / SK6 / SUP3
75C 6
1080
CS 80
80C 6
1085
CK 85
C85S
SK85 / SK5
85C 6
1095
CK 101
C100S
CS 95
EN 44D
SK95 / SK4 / SUP4
98C 6
C125S / 125Cr2
SKS81 / SK2
6150
51CrV4
51CrV4
735A50
EN 47
SUP 10
50Cr4V2
50HGFA
75Ni8
75Ni8
SKS51
75Cr1
75Cr1

Other medium, high carbon & low alloy grades can be offered on request, subject to availability of the raw material.

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