B440QZR - Q/BQB 130-2003

Grade	B440QZR
Corresponding Standard	Q/BQB 130-2003
Classification	Carbon Steel

B440QZR Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Nb
适用成品板厚2.5~6.5mm	Minimum Value	-	0.1	0.6	-	-	-
适用成品板厚2.5~6.5mm	Maximum Value	0.12	0.4	1.1	0.03	0.025	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.

B440QZR Corresponding Standards(Same grade name, different standards)

1	Q/BQB 310-2014
	B440QZR
2	Q/BQB 130-2003
	B440QZR
3	Q/BQB 310-2023
	B440QZR

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