20MnB5 - EN ISO 683-2-2018

Grade	20MnB5
Corresponding Standard	EN ISO 683-2-2018 Heat-treatable steels,alloy steels and free-cutting steels--Part 2：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

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

1 Approximate Comparison Table

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 structural alloy steel

3 Approximate Comparison Table structural alloy steel

4 Approximate Comparison Table

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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