ML20Cr A20204 - GB /T 6478-2015

Grade	ML20Cr
China ISC	A20204
Corresponding Standard	GB /T 6478-2015 Steels for Cold Heading and Cold Extruding
Classification	Alloy Steel
Properties	Forgability

ML20Cr Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Al ^a
Minimum Value	0.18	0.1	0.6	-	-	0.9	0.02
Maximum Value	0.23	0.3	0.9	0.035	0.035	1.2	-

ML20Cr 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 %
5（12）≤d≤60（100）	Annealing	≤560			≥60
d=25 (sample diameter)	Heat Treated	750~1100	≥490	≥9

Approximate Comparison Table Cold Heading Steel

China		United States		International Organization for Standardization	Russia
GB	ISC	ASTM/AISI	UNS	ISO	GOST
ML20Cr	A20204	5120	G51200	20Cr4E (B10)	20Х

ML20Cr Corresponding Standards(Same grade name, different standards)

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!