33MnCrB5-2 1.7185 - NF EN 10083-3-2006

Grade	33MnCrB5-2
	1.7185
Corresponding Standard	NF EN 10083-3-2006 Steels for Quenching and Tempering - Part 3: Technical Delivery Conditions for Alloy Steels
Classification	Alloy Steel

33MnCrB5-2 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	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	0.005

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
Steel: d ≤ 16mm; t ≤ 8mm	Quenching + Tempering (+QT)	1050~1300	≥850	≥13	≥50
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm	Quenching + Tempering (+QT)	950~1200	≥800	≥13	≥50		≥50
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm	Quenching + Tempering (+QT)	① 900~1100	① ≥750	① ≥13	① ≥50		① ≥50
Steel:	Processed to a Certain Shearability (+S)					≤255
Steel:	Softening Annealing (+A)					②

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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