Blue Surface Hardened Spring Steel Strip

Categories	Alloy Steel Spring Strips
Brand	fushun
Model	SUP10
Width	10-320mm
Thickness	0.15-3.5mm
Delivery Condition	Soft Annealed,Hardened+Tempered
Surface Condition	Grey Blue,Bright,Polished,Polished and Colour Tempered
Terms of Payment	L/C, D/A, D/P, T/T
Update Time	Apr 27,2024

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Detail Information

Introduce

Hardened spring strips to meet the most exacting requirements depended upon for top quality coil. This is perhaps the most universally used of all tempered spring steels. Recommended for various types of coiled and flat mechanical springs such as ignition vibrator springs, springs for timing devices, springs for the electrical and electronic field, steel tapes, rules, etc

Standard

JIS G4801 2005 Spring Steels

Products Details

Supply Size Range:

Thickness: 0.5-8mm

Width:80-300mm

Length: Coils

Delivery Conditions:

*Cold Rolled only

*Cold Rolled+Soft Annealed (G)

*Cold Rolled+Soft Annealed+Cold Rolled (G+K)

*Cold Rolled+Hardened+Tempered (H+A)

Surface Conditions:

*Grey Blue (GR)

*Bright (BK)

*Polished (P)

*Polished and Colour Tempered (P+AF)

All Grades Comparison

GB	ASTM	JIS	EN	DIN
55	1055	/	CK55	1.1204
60	1060	/	CK60	1.1211
70	1070	/	CK67	1.1231
75	1075	/	CK75	1.1248
85	1086	SUP3	CK85	1.1269
T10A	1095	SK4	CK101	1.1274
65Mn	1066	/	/	/
60Si2Mn	9260	SUP6,SUP7	61SiCr7	60SiCr7
50CrVA	6150	SUP10A	51CrV4	1.8159

Chemical Composition(%)

Steel Grade	C	Mn	Si	P	S	Cr	Ni	Cu	V
55	0.52-0.60	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.30 max	0.25 max	/
65	0.62-0.70	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	0.25 max	/
70	0.62-0.75	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	0.25 max	/
75	0.72-0.80	0.50-0.80	0.17-0.37	0.035 max	0.035 max	0.25 max	0.30 max	0.25 max	/
85	0.95-1.04	0.40 max	0.35 max	0.025 max	0.025 max	/	/	/	/
65Mn	0.62-0.70	0.90-1.20	0.17-0.37	0.035 max	0.035 max	0.25 max	0.25 max	0.25 max	/
60Si2Mn	0.56-0.64	0.70-1.00	1.50-2.00	0.035 max	0.035 max	0.35 max	0.25 max	0.25 max	/
50CrVA	0.46-0.54	0.50-0.80	0.17-0.37	0.025 max	0.025 max	0.80-1.10	0.35 max	0.25 max	0.10-0.20

Mechanical Properties(Quenched and Tempered Condition)(T=20°C if not differently stated)

Steel Grade	Tensile Strength Rm (Mpa)	Yield Strength Rp0.2 (Mpa)	Elongation A5 (%)	Area Reduction Ratio C (%)
65	980 min	785 min	9 min	35 min
70	1030 min	835 min	8 min	30 min
85	1130 min	980 min	6 min	30 min
65Mn	980 min	785 min	8 min	30 min
60Si2Mn	1275 min	1180 min	5 min	25 min
50CrVA	1275 min	1130 min	10 min	40 min

Heat Treatment

Steel Grade	Quenching Temperature (°C)	Media	Tempering Temperature (°C)
65	840	oil	500
70	830	oil	480
85	820	oil	480
65Mn	830	oil	540
60Si2Mn	870	oil	480
50CrVA	850	oil	500