27MnCrB5-2 - EN ISO 683-2-2018

Grade	27MnCrB5-2
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

27MnCrB5-2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	B
Minimum Value	0.24	-	1.1	-	-	0.3	-	0.0008
Maximum Value	0.3	0.4	1.4	0.025	0.035	0.6	0.4	0.005

27MnCrB5-2 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)	1000~1250	≥800	≥14	≥55
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering (+QT)	900~1150	≥750	≥14	≥55	≥60
Bar, flat material, forging; 40<d≤100 or 20<t≤60	Quenching and Tempering (+QT)	800~1000	≥700	≥15	≥55	≥65

27MnCrB5-2 Corresponding Standards(Same grade name, different standards)

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