45Cr A20452 - GB /T 3077-2015

Grade	45Cr
China ISC	A20452
Corresponding Standard	GB /T 3077-2015 Alloy Structure Steels
Classification	Alloy Steel
Properties	Low-Temperature Toughness Machinability Quench Hardness

45Cr Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.42	0.17	0.5	-	-	0.8	-	-	-
Maximum Value	0.49	0.37	0.8	0.03	0.03	1.1	0.3	0.3	0.1

45Cr 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	≥1030	≥835	≥9	≥40	≤217	≥39

1 Approximate Comparison Table Structural Alloy Steel

2 Approximate Comparison Table Structural Alloy Steel

China	International Organization for Standardization	Germany	European Standard
GB	ISO	DIN EN/DIN	EN
45Cr	46Cr2	46Cr2	46Cr2

45Cr 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"!