33MnCrB5-2 - EN ISO 683-2-2018

Grade	33MnCrB5-2
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

33MnCrB5-2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	B
Minimum Value	0.3	-	1.2	-	-	0.3	-	0.0008
Maximum Value	0.36	0.4	1.5	0.025	0.035	0.6	0.4	0.005

33MnCrB5-2 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 %	Hardness HBW	Impact Energy Absorption KV2 J
Bar, flat material, forging; d≤16 or t≤8	Quenching and Tempering (+QT)	1050~1300	≥850	≥13	≥50	-	-
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering (+QT)	950~1200	≥800	≥13	≥50	-	≥50
Bar, flat material, forging; 40<d≤100 or 20<t≤60	Quenching and Tempering (+QT)	900~1100	≥750	≥13	≥50	-	≥50
Bars, semi-finished products	Processed to improve shearability (+S)					≤255

Approximate Comparison Table Structural Alloy Steel

China	International Organization for Standardization	France	European Standard
GB	ISO	NF EN/NF	EN
33MnCrB	33MnCrB5-2	33MnCrB5-2	33MnCrB5-2

33MnCrB5-2 Corresponding Standards(Same grade name, different standards)

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