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Home > Products > Hot-rolled products > Steel grades > Mild non-alloy steels for cold-reducing

Mild non-alloy steels for cold-reducing

Usage

These steel grades are delivered as feedstock for cold-rolling.

Standards

Material no.	D	FK¹⁾
	DIN 1614-1
1.0320	St 22	A
1.0359	RRSt 23	A
1.0327	St 24	A
	St 25²⁾	A
	IF³⁾	A

¹⁾ FK = Tensile strength class, see Dimensions and Executions
²⁾ Hot-rolled coil for producing DC05 (St 15) according to EN 10130 is delivered with a
chemical composition as indicated below. ³⁾ Hot-rolled coil for producing DC06 (IF steel) according to EN 10130 is delivered with a
chemical composition as indicated below.

Chemical composition in percent by weight¹⁾ [%] (Heat analysis)

Grade	C	Mn	P	S	N	Ti
	max.	max.	max.	max.	max.	max.
St 22	0.10	0.45	0.035	0.035	0.007	-
RRSt 23	0.10	0.45	0.030	0.030	1)	-
St 24	0.08	0.40	0.025	0.025	1)	-
St 25	0.06	0.35	0.025	0.025	–	-
IF	0.02	0.25	0.020	0.020	–	0.30²⁾

¹⁾ The nitrogen is fixed. The steel therefore contains at least 0.020 % of metallic aluminium.
The use of other nitrogen-fixing elements must be agreed.
²⁾ Titanium can be replaced by niobium. Carbon and nitrogen must be completely set.

Condition of delivery, scope of testing and certificate

The provisions of DIN 1614-1, chapters 8 und 9 shall apply for delivery and inspection.

Certificates according to DIN EN 10204 can be supplied as follows: IT, DUN, FAX, e-mail, paper.