20MnB5 - ISO 683-2-2016

Grade	20MnB5
Corresponding Standard	ISO 683-2-2016 Alloy Steels for Quenching and Tempering
Classification	Alloy Steel

20MnB5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cu	B
Minimum Value	0.17	-	1.1	-	-	-	0.0008
Maximum Value	0.23	0.4	1.4	0.025	0.035	0.4	0.005

20MnB5 Mechanical Properties

	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
Bar, flat material, forging; d≤16 or t≤8	Quenching and Tempering	900~1050	≥700	≥14	≥55
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering	750~900	≥600	≥15	≥55	≥60

1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN	Numerical Grade
SWRCHB620	20MnB5 23MnB5 26MnB5 34MnB5	20MnB5 23MnB5 26MnB5 34MnB5	1.5530

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

Japan	International Organization for Standardization	European Standard
JIS	ISO	EN
SWRCHB620	20MnB5	20MnB5

20MnB5 Corresponding Standards(Same grade name, different standards)

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