J55 - Q/BQB 130-2003

Grade	J55
Corresponding Standard	Q/BQB 130-2003 Primary Rolled Slabs
Classification	Carbon Steel

J55 Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S
适用成品板厚6~8mm	Minimum Value	-	0.2	1.1	-	-
适用成品板厚6~8mm	Maximum Value	0.12	0.5	1.6	0.025	0.02

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.

J55 Corresponding Standards(Same grade name, different standards)

1	API 5CT-2018
	J55
2	Q/BQB 130-2003
	J55

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