75 U20752 - GB /T 699-2015

Grade	75
China ISC	U20752
Corresponding Standard	GB /T 699-2015 Quality Carbon Structure Steels
Classification	Carbon Steel
Properties	High Strength High Elasticity

75 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.72	0.17	0.5	-	-	-	-	-
Maximum Value	0.8	0.37	0.8	0.035	0.035	0.25	0.3	0.25

75 Mechanical Properties

diameter(thickness) d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
Sample**	Quenching + Tempering	≥1080	≥880	≥7	≥30	Unprocessed Steel ≤285
						Annealed Steel ≤241

1 Approximate Comparison Table High-Quality Carbon Structural Steel

2 Approximate Comparison Table High-Quality Carbon Structural Steel

75 Corresponding Standards(Same grade name, different standards)

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