ML40MnB A71404 - GB /T 28906-2025

Grade	ML40MnB
China ISC	A71404
Corresponding Standard	GB /T 28906-2025 Hot Rolled Wire Rod for Cold Heading
Classification	Alloy Steel
Properties	Forgability

ML40MnB Chemical Element Composition Content (%)

Component	C	Si ^①	Mn	P	S	B ^{② ③}	Al ^④
Minimum Value	0.38	0.1	1.2	-	-	0.0008	0.02
Maximum Value	0.43	0.3	1.5	0.025	0.02	0.0035	0.06

ML40MnB Mechanical Properties

Tensile Strength σ_b Mpa	Reduction of Area ψ %
≤630	≥58

ML40MnB 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"!