ML20MnTiB A74204 - GB /T 6478-2015

Grade	ML20MnTiB
China ISC	A74204
Corresponding Standard	GB /T 6478-2015 Steels For Cold Heading And Cold Extruding
Classification	Alloy Steel
Properties	Strength Forgability Quench Hardness

ML20MnTiB Chemical Element Composition Content (%)

Component	C	Si ^c	Mn	P	S	Ti	B ^b	Al ^a
Minimum Value	0.18	0.1	1.3	-	-	0.04	0.0008	0.02
Maximum Value	0.23	0.3	1.6	0.025	0.025	0.1	0.0035	-

ML20MnTiB 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 840~880°C oil quenching, tempering temperature 180~220°C	≥1130	≥930	≥10	≥45

ML20MnTiB Corresponding Standards(Same grade name, different standards)

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