39MnB5 - ISO 683-2-2016

Grade	39MnB5
Corresponding Standard	ISO 683-2-2016 Alloy Steels for Quenching and Tempering
Classification	Alloy Steel

39MnB5 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cu	B
Minimum Value	0.36	-	1.15	-	-	-	0.0008
Maximum Value	0.42	0.4	1.45	0.025	0.035	0.4	0.005

39MnB5 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	1050~1250	≥900	≥12	≥50
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering	850~1050	≥700	≥12	≥50	≥60

39MnB5 Corresponding Standards(Same grade name, different standards)

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