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Hardened & Tempered Steel Strips

Steel Grades

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Hardened & Tempered Steel Strips
Manufacturing Capabilities
Steel Grades
Size Chart
Hardness Conversion Chart
Surfaces
Edges
Tolerances

Hard Strips (India) offers the following Hardened & Tempered Spring Steel materials :

Grades	C %	Mn %	Si % (Max)	S % (Max)	P % (Max)	Cr %	V %	Ni %	Mo %
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		1.8-2.1	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
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.