30Cr A20302 - GB /T 3077-2015

Grade	30Cr
China ISC	A20302
Corresponding Standard	GB /T 3077-2015 Alloy Structure Steels
Classification	Alloy Steel
Properties	Strength Hardness Impact Toughness Machinability Quench Hardness
Density	7.83 g/cm³

30Cr Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.27	0.17	0.5	-	-	0.8	-	-	-
Maximum Value	0.34	0.37	0.8	0.03	0.03	1.1	0.3	0.3	0.1

30Cr Mechanical Properties

diameter 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	Impact Energy Absorption KV2 J
d=25	Quenching + Tempering	≥885	≥685	≥11	≥45	≤187	≥47

Approximate Comparison Table Structural Alloy Steel

30Cr Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!