QSt E420TM - Q/BQB 130-2003

Grade	QSt E420TM
Corresponding Standard	Q/BQB 130-2003
Classification	Carbon Steel

QSt E420TM Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Ti	Al
适用成品板3~<7mm	Minimum Value	-	-	0.7	-	-	-	0.01
适用成品板3~<7mm	Maximum Value	0.1	0.15	1.2	0.035	0.03	0.09	-

	Component	C	Si	Mn	P	S	Ti	Nb	Al
适用成品板7~<10mm	Minimum Value	-	-	0.7	-	-	-	-	0.01
适用成品板7~<10mm	Maximum Value	0.1	0.15	1.2	0.035	0.03	0.12	0.04	-

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.

QStE420TM Corresponding Standards(Same grade name, different standards)

1	Q/BQB 310-2014
	QStE420TM
2	Q/BQB 130-2003
	QSt E420TM
3	Q/BQB 310-2023
	QStE420TM

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