HⅡ - Q/BQB 130-2003

Grade	HⅡ
Corresponding Standard	Q/BQB 130-2003 Primary Rolled Slabs
Classification	Carbon Steel

HⅡ Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Al
适用成品板厚3~＜5mm	Minimum Value	0.1	-	0.5	-	-	0.01
适用成品板厚3~＜5mm	Maximum Value	0.19	0.12	1	0.035	0.03	-

	Component	C	Si	Mn	P	S	Al
适用成品板厚5~＜13mm	Minimum Value	0.1	-	0.7	-	-	0.01
适用成品板厚5~＜13mm	Maximum Value	0.19	0.12	1.2	0.035	0.03	-

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.

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