ML25Mn U41252 - GB T 6478-2001

Grade	ML25Mn
China ISC	U41252
Corresponding Standard	GB T 6478-2001 Steels for cold heading and cold extruding
Classification	Carbon Steel

ML25Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^*	Ni ^*	Cu ^*
Minimum Value	0.22	-	0.6	-	-	-	-	-
Maximum Value	0.29	0.25	0.9	0.035	0.035	0.2	0.2	0.2

①By agreement between the supplier and the purchaser, other grades of cold heading and cold extrusion steel may be supplied.
②Permissible deviations in the chemical composition of the steel shall comply with the relevant provisions of GB/T 222-1984.

ML25Mn 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
Steel	Annealing	≤540			* ≥60
Sample diameter d=25	Normalizing Temperature AC3 + 30~50°C	≥450	≥275	≥23	≥50	Hot Rolled Brinell Hardness HBS ≤170

Approximate Comparison Table Cold Heading Steel

China		Taiwan, China	Japan	South Korea	United States		France
GB	ISC	CNS	JIS	KS	ASTM/AISI	UNS	NF EN/NF
ML25Mn	U41252	SWRCH27K	SWRCH25K SWRCH27K	SWRCH25K	1026	G10260	1C25

ML25Mn Corresponding Standards(Same grade name, different standards)

1	GB T 6478-2001
	ML25Mn U41252
2	GB /T 6478-2015
	ML25Mn U41252
3	GB /T 28906-2012
	ML25Mn U41252
4	GB /T 5953.1-2009
	ML25Mn
5	Q/OHAB 113-2020
	ML25Mn
6	GB /T 28906-2025
	ML25Mn U41252

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