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Grade A269 TP347
USA UNS S34700
Corresponding Standard ASTM A269/A269M-2025
Seamless and Welded Austenitic Stainless Steel Tubing for General Service
Classification Austenitic Stainless Steel
A269 TP347 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni More
Minimum Value - - - - - 17 9 Nb：10C~1.10
Maximum Value 0.08 1 2 0.045 0.03 19 12
A269 TP347 Mechanical Properties
Heat Treatment or Condition
Hardness
HBW
Austenitizing Temperature ≥1040℃ ≤192
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
A269TP347 Corresponding Standards(Same grade name, different standards)
1 ASTM A269/A269M-2014
A269 TP347 S34700
2 ASTM A269/A269M-2025
A269 TP347 S34700

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