20Mn2A - GB /T 10560-2008

Grade	20Mn2A
Corresponding Standard	GB /T 10560-2008 High Tensile of Round Link Chains for Mines
Classification	Alloy Steel
Properties	High Strength

20Mn2A Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Al	More
Minimum Value	0.17	0.17	1.4	-	-	0.02	P+S≤0.035
Maximum Value	0.24	0.37	1.8	0.035	0.035	0.05	P+S≤0.035

20Mn2A 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 %	Impact Energy Absorption KV2 J
d=15	Quenching + Tempering	≥785	≥590	≥10	≥10	KU ≥47

20Mn2A Corresponding Standards(Same grade name, different standards)

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