ML40 U40402 - GB /T 6478-2015

Grade	ML40
China ISC	U40402
Corresponding Standard	GB /T 6478-2015 Steels for Cold Heading and Cold Extruding
Classification	Carbon Steel
Properties	Forgability

ML40 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.38	0.1	0.6	-	-
Maximum Value	0.43	0.3	0.9	0.025	0.025

ML40 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 %	Hardness HBW
d=25 (sample diameter)	Normalizing temperature AC3 +30~50°C	≥570	≥335	≥19	≥45	Hot Rolled State ≤217

Approximate Comparison Table Cold Heading Steel

China		Taiwan, China	Japan	South Korea	United States		International Organization for Standardization	France	Russia	United Kingdom
GB	ISC	CNS	JIS	KS	ASTM/AISI	UNS	ISO	NF EN/NF	GOST	BS EN/BS
ML40	U40402	SWRCH40K	SWRCH40K	SWRCH40K	1040	G10400	CE40E4	XC40 FR38	40	1/3

ML40 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"!