DIN 17456 stainless steel seamless steel pipe introduction and specifications

Mar 26, 2024

DIN 17456 stainless steel seamless steel pipe introduction and specifications

DIN17456 standard for general purpose welded circular tubes made of stainless ferritic, martensitic or austensitic or austenitic steels as given in table 1. Tubes of this kind may be used in construction, or in the food, pharmaceutical and automobile industries, as well as for domestic installations or decorative purposes.

chemical composition:

Grade	Mfg. Process	Chemical Composition (%)
Grade	Mfg. Process	C	Si	Mn	P	S	Ni	Cr	Mo	Others
X6CrTi12	S	0.08Max	-	-	-	-	-	10.5~12.5	-	Ti: 6×%C 1.00Max
X6CrAl13	S	0.08Max	-	-	-	-	-	12.0~14.0	-	Al: 0.010~0.30
X5CrNi1911	S	0.030Max	-	-	-	-	8.5~10.5	18.0~14.0	-	-
X6Cr17	S	0.08Max	-	-	-	-	-	15.5~17.5	-	-
X6CrTi17	S	0.08Max	-	-	-	-	-	16.0~18.0	-	Ti: 7×%C 1.20Max
X5CrNi1810	S	0.07Max	-	-	-	-	8.5~10.5	17.0~19.0	-	-
X2CrNi1911	S	0.03Max	-	-	-	-	10.5~12.5	18.0~20.0	-	-
X2CrNiTi1810	S	0.03Max	-	-	-	-	8.5~10.5	17.0~19.0	-	N: 0.12~0.22
X6CrNiTi1810	S	0.08Max	-	-	-	-	9.0~12.0	17.0~19.0	-	Ti: 5×%C 0.80Max

Mechanical Property:

Steel grade		Heat treatment	Maximum HB or HV	Minimum yield stress or 0.2% proof stress N/m2	Minimum 1% proof stress N/m2	Tensile N/m2	Minimum elongation after fracture 2) (Lo=5do %)		Resistance to intercrystalline corrosion
Symbol	Material	Heat treatment	Maximum HB or HV	Minimum yield stress or 0.2% proof stress N/m2	Minimum 1% proof stress N/m2	Tensile N/m2	Longitudinal	Transverse	as delivered condition	further processing-welding, no heat treatment
X6 CrTi 12	1.4512		175	190	-	390 to 560	30	25	n.g.	n.g.
X2 CrNi 1911	1.4002		180	250	-	400 to 600	20	15	n.g.	n.g.
X2 CrNiN 1810	1.4006	Annealed	200	250	-	450 to 650	20	15	n.g.	n.g.
X6 CrNiTi 1810	1.4016		185	270	-	450 to 600	20	15	n.g.	n.g.
X6 CrNiNb 1810	1.4510		185	270	-	450 to 600	20	15	g.	g.