ML20MnVB A73204 - GB /T 6478-2015

Grade	ML20MnVB
China ISC	A73204
Corresponding Standard	GB /T 6478-2015 Steels for Cold Heading and Cold Extruding
Classification	Alloy Steel
Properties	High Strength Good Forgability

ML20MnVB Chemical Element Composition Content (%)

Component	C	Si ^{^c}	Mn	P	S	V	B ^{^b}	Al ^{^a}
Minimum Value	0.18	0.1	1.2	-	-	0.07	0.0008	0.02
Maximum Value	0.23	0.3	1.6	0.025	0.025	0.12	0.0035	-

ML20MnVB Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %
d=25 (sample diameter)	Quenching temperature 860~900°C, oil quenching, tempering temperature 370~410°C	≥1040	≥940	≥9	≥45

ML20MnVB Corresponding Standards(Same grade name, different standards)

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