St 52-3 - Q/BQB 130-2003

Grade	St 52-3
Corresponding Standard	Q/BQB 130-2003
Classification	Carbon Steel

St 52-3 Chemical Element Composition Content (%)

	Component	C	Si	Mn	P	S	Al
适用成品板厚<7mm	Minimum Value	0.13	0.2	1.2	-	-	0.01
适用成品板厚<7mm	Maximum Value	0.22	0.55	1.7	0.035	0.035	-

	Component	C	Si	Mn	P	S	Nb	Al
适用成品板厚7~<18mm	Minimum Value	0.13	0.2	1.1	-	-	-	0.01
适用成品板厚7~<18mm	Maximum Value	0.22	0.55	1.6	0.035	0.035	0.04	-

	Component	C	Si	Mn	P	S	Nb	Al
适用成品板厚18~<25.4mm	Minimum Value	0.13	0.2	1.1	-	-	-	0.01
适用成品板厚18~<25.4mm	Maximum Value	0.22	0.55	1.6	0.03	0.03	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.

St52-3 Corresponding Standards(Same grade name, different standards)

1	DIN 17100-1980
	St52-3 (1.0841) 1.0570
2	DIN 1652-2-1990
	St52-3 1.0570
3	Q/BQB 303-2018
	St52-3
4	Q/BQB 130-2003
	St 52-3

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