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Grade X1CrNiMoCuN20-18-7
European Standard Steel Grade 1.4547
Corresponding Standard EN 10272-2016
Stainless Steel Bars for Pressure Purposes
Classification Austenitic Stainless Steel
X1CrNiMoCuN20-18-7 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo N
Minimum Value - - - - - 19.5 17.5 0.5 6 0.18
Maximum Value 0.02 0.7 1 0.03 0.01 20.5 18.5 1 7 0.25
X1CrNiMoCuN20-18-7 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
≤160 650~850 Rp0.2：≥300
Rp1.0：≥340		 l: ≥35 ≤260 (at 20℃)：l ≥100 (at 20℃)
(at -196℃)：≥60
160<d (b)≤400 650~850 Rp0.2：≥300
Rp1.0：≥340		 tr: ≥30 ≤260 (at 20℃)：tr ≥60
(at -196℃)：≥ 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.
1 Approximate Comparison Table Austenitic Stainless Steel
China Japan United States International Organization for Standardization European Standard Sweden
GB ISC JIS ASTM UNS ISO EN Numerical Grade SS
015Cr20Ni18Mo6CuN S31252 SUS 312L S31254 S31254 X1CrNiMoN 20-18-7
X1CrNiMoCuN20-18-7 		X1CrNiMoCuN 20-18-7 1.4547 254SMO
2 Approximate Comparison Table Austenitic Stainless Steel
China United States Germany European Standard Sweden
GB Commercial Grade UNS DIN EN/DIN W-Nr. EN Numerical Grade SS
254SMo 254SMO S31254 X1CrNiMoCuN20-18-7 1.4547 X1CrNiMoCuN20-18-7 1.4547 2378
X1CrNiMoCuN20-18-7 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
X1CrNiMoCuN 20-18-7 1.4547
2 EN 10253-4-2003
X1CrNiMoCuN20-18-7 1.4547
3 EN 10250-4-1999
X1CrNiMoCuN 20-18-7 1.4547
4 ISO TS 15510-2003
X1CrNiMoCuN20-18-7
5 EN 10088-3-2005
X1CrNiMoCuN 20-18-7 1.4547
6 EN 10088-3-2014
X1CrNiMoCuN 20-18-7 1.4547
7 ISO 15510-2014
X1CrNiMoCuN20-18-7 4547-312-54-I
8 ISO 9328-7-2018
X1CrNiMoCuN20-18-7
9 DIN EN 10088-3-2014
X1CrNiMoCuN 20-18-7 1.4547
10 NF EN 10088-2-2005
X1CrNiMoCuN20-18-7 1.4547
11 NF EN 10088-1-2005
X1CrNiMoCuN20-18-7 1.4547
12 NF EN 10028-7-2008
X1CrNiMoCuN20-18-7 1.4547
13 NF EN 10296-2-2005
X1CrNiMoCuN20-18-7 1.4547
14 NF EN 10028-7-2000
X1CrNiMoCuN20-18-7 1.4547
15 DIN EN 10296-2-2006
X1CrNiMoCuN20-18-7 1.4547
16 EN 10272-2016
X1CrNiMoCuN20-18-7 1.4547

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