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Grade X6CrNiMoNb17-12-2
European Standard Steel Grade 1.4580
Corresponding Standard EN 10272-2016
Stainless steel bars for pressure purposes
Classification Austenitic Stainless Steel
X6CrNiMoNb17-12-2 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo More
Minimum Value - - - - - 16.5 10.5 2 Nb：10 x C ~ 1.00
Maximum Value 0.08 1 2 0.045 0.015 18.5 13.5 2.5
X6CrNiMoNb17-12-2 Mechanical Properties
Diameter or thickness
d or b
mm		 Tensile Strength
σb
Mpa 		Specified Plastic Yield Strength
Rp0.2
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW 		Impact Energy Absorption
KV2
J
≤160 510~740 Rp0.2：≥215
Rp1.0：≥250		 l: ≥35 ≤230 (at 20℃)：l ≥100
160<d (b)≤400 510~740 Rp0.2：≥215
Rp1.0：≥250		 tr: ≥30 ≤230 (at 20℃)：tr ≥60
a) Axial： l；Tangential：tr.
* The maximum HBW-values may be raised by 100 units or the tensile strength value may be raised by 200 MPa and the minimum elongation value be lowered to 20 % for bars of ≤ 35 mm thickness having a final cold deformation.
Approximate Comparison Table Austenitic Stainless Steel
China United States International Organization for Standardization European Standard
ISC ASTM UNS ISO Numerical Grade EN Numerical Grade
S31678 316Nb
(316Cb) 		S31640 X6CrNiMoNb17-12-2 4580-316-40-I X6CrNiMoNb17-12-2 1.4580
X6CrNiMoNb17-12-2 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X6CrNiMoNb 17-12-2 1.4580
2 ISO TS 15510-2003
X6CrNiMoNb17-12-2
3 DIN 17440-1972
X6CrNiMoNb 17-12-2 X10CrNiMoNb 18-10 1.4580
4 EN 10088-3-2014
X6CrNiMoNb 17-12-2 1.4580
5 ISO 15510-2014
X6CrNiMoNb17-12-2 4580-316-40-I
6 ISO 9328-7-2018
X6CrNiMoNb17-12-2
7 DIN EN 10088-3-2014
X6CrNiMoNb 17-12-2 1.4580
8 NF EN 10088-2-2005
X6CrNiMoNb17-12-2 1.4580
9 NF EN 10088-1-2005
X6CrNiMoNb17-12-2 1.4580
10 NF EN 10028-7-2008
X6CrNiMoNb17-12-2 1.4580
11 NF EN 10028-7-2000
X6CrNiMoNb17-12-2 1.4580
12 EN 10272-2016
X6CrNiMoNb17-12-2 1.4580

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