SS400 - Q/BQB 130-2003

Grade	SS400
Corresponding Standard	Q/BQB 130-2003
Classification	Carbon Steel

SS400 Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S
适用成品板厚≤6mm	Minimum Value	0.12	0.04	0.2	-	-
适用成品板厚≤6mm	Maximum Value	0.21	0.3	0.7	0.035	0.035

	Component	C	Si	Mn	P	S
适用成品板厚>6~16mm	Minimum Value	0.12	0.04	0.5	-	-
适用成品板厚>6~16mm	Maximum Value	0.21	0.3	1	0.035	0.035

	Component	C	Si	Mn	P	S
适用成品板厚>16~30mm	Minimum Value	0.13	0.1	0.5	-	-
适用成品板厚>16~30mm	Maximum Value	0.22	0.35	1	0.035	0.035

	Component	C	Si	Mn	P	S
适用成品板厚>30~50mm	Minimum Value	0.15	0.1	0.7	-	-
适用成品板厚>30~50mm	Maximum Value	0.24	0.35	1.2	0.035	0.035

①Deoxidation method : C--Cap steel；A--aluminum-killed steel；G-aluminum--silicon killed steel；K--silicon killed steel
②For thick plates (thickness ≥ 15mm), the slabs should be aluminum-silicon killed steel slabs.

SS400 Corresponding Standards(Same grade name, different standards)

1	JIS G 3101-2011
	SS400 (SS41)
2	KS D 3503-2008
	SS400 SS41
3	JIS G 3101-2015
	SS400
4	Q/ASB 271-2017
	SS400
5	Q/BQB 303-2018
	SS400
6	Q/BQB 130-2003
	SS400

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