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Home Material JIS G 4801-1984
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Grade SUP 3
Corresponding Standard JIS G 4801-1984
Spring steels
Classification Spring Steel
Properties Elasticity
SUP 3 Chemical Element Composition Content (%)
Component C Si Mn P S Cu
Minimum Value 0.75 0.15 0.3 - - -
Maximum Value 0.9 0.35 0.6 0.035 0.035 0.3
SUP 3 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Bar, Flat bar, Wire rod Quenching and Tempering (Q+T) ≥1079 ≥834 ≥8 341~401
Approximate Comparison Table Spring Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS14 BS EN/BS
85 U20852 SUP3 SUP3 SPS1 1086 G10860 Type DC Ck85
C85S 		1.1269
1.1269 		XC85 C85S 1.1269 85A ≈1774 060A86
CS80

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