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Grade 1.4550
European Standard Steel Grade X6CrNiNb18-10
Corresponding Standard EN 10253-4-2003
Butt-welding pipe fittings. Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
Classification Austenitic Stainless Steel
1.4550 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Nb
Minimum Value - - - - - 17 9 -
Maximum Value 0.08 1 2 0.045 0.015 19 12 1
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Nb S34778 347 SUS 347 STS 347 347 S34700 X6CrNiNb 18-10 X6CrNiNb 18-10
(X10CrNiNb18-9) 		1.4550 Z6CNNb 18-10 X6CrNiNb 18-10 1.4550 08Х18Н12Б 2338 347S17
347S31
2 Approximate Comparison Table Austenitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
06Cr18Ni11Nb
(0Cr18Ni11Nb) 		S34778 347 SUS 347 STS 347 347 S34700 X6CrNiNb 18-10 X6CrNiNb 18-10
(X10CrNiNb18-9) 		1.4550 Z6CNNb 18-10 X6CrNiNb 18-10 1.4550 08Х18Н12Б 2338 347S17
347S31
3 Approximate Comparison Table Austenitic Stainless Steel
China International Organization for Standardization European Standard
GB ISO EN
0Cr18Ni10Nb X6CrNiNb18-10 X6CrNiNb18-10
1.4550 Corresponding Standards(Same grade name, different standards)
1 EN 10088-1-2005
1.4550 X6CrNiNb 18-10
2 EN 10296-2-2005
1.4550 X6CrNiNb18-10
3 EN 10253-4-2003
1.4550 X6CrNiNb18-10
4 EN 10250-4-1999
1.4550 X6CrNiNb 18-10
5 EN 10088-2-2005
1.4550 X6CrNiNb18-10
6 DIN 17440-1972
1.4550 X10CrNiNb 18-9 X6CrNiNb 18-10
7 EN 10088-3-2005
1.4550 X6CrNiNb 18-10
8 EN 10088-3-2014
1.4550 X6CrNiNb 18-10
9 DIN EN 10088-3-2014
1.4550 X6CrNiNb 18-10
10 NF EN 10088-2-2005
1.4550 X6CrNiNb18-10
11 NF EN 10088-1-2005
1.4550 X6CrNiNb18-10
12 NF EN 10028-7-2008
1.4550 X6CrNiNb18-10
13 NF EN 10296-2-2005
1.4550 X6CrNiNb18-10
14 NF EN 10028-7-2000
1.4550 X6CrNiNb18-10
15 DIN EN 10296-2-2006
1.4550 X6CrNiNb18-10
16 EN 10272-2016
1.4550 X6CrNiNb18-10

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