20Cr A20202 - JB /T 6908-2020

Grade	20Cr
	A20202
Corresponding Standard	JB /T 6908-2020 Steel Forings for Displacement Compressors
Classification	Alloy Steel

20Cr Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.18	0.17	0.5	-	-	0.7	-	-
Maximum Value	0.24	0.37	0.8	0.03	0.03	1	0.3	0.2

20Cr Mechanical Properties

thickness or diameter mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
15 (sample)	Single quenching + tempering	≥835	≥540	≥10	≥40	≥250	KU2：≥47
30 (sample)	Double Quenching and Tempering	≥635	≥390	≥12	≥40	≥190	KU2：≥47
≤ 60	Carburizing + Quenching + Tempering	≥635	≥390	≥13	≥40	≥190	KU2：≥39

20Cr 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"!