ML30MnB A71304 - GB /T 6478-2015

Grade	ML30MnB
China ISC	A71304
Corresponding Standard	GB /T 6478-2015 Steels for Cold Heading and Cold Extruding
Classification	Alloy Steel
Properties	Good Forgability

ML30MnB Chemical Element Composition Content (%)

Component	C	Si ^{^c}	Mn	P	S	B ^{^c}	Al ^{^a}
Minimum Value	0.28	0.1	0.9	-	-	0.0008	0.02
Maximum Value	0.33	0.3	1.2	0.025	0.025	0.0035	-

1 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

2 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China		Japan	International Organization for Standardization	European Standard
YB	GB	JIS	ISO	EN
QML30MnB	ML30MnB	SWRCHB331	30MnB4	30MnB4

3 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

China	Japan	International Organization for Standardization	European Standard
GB	JIS	ISO	EN
ML30MnB GB/T 28906-2025 GB/T 6478-2015	SWRCHB331 JIS G3058-1-2021	30MnB4 ISO 4954-2022	30MnB4 EN 10263-4-2017

ML30MnB 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"!