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Grade TP 309S
USA UNS S30908
Corresponding Standard ASTM A409/A409M-2019
Welded Large Diameter Austenitic Steel Pipe for Corrosive or High-Temperature Service
Classification Austenitic Stainless Steel
TP 309S Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 22 12
Maximum Value 0.08 1 2 0.045 0.03 24 15
TP 309S Mechanical Properties
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa
≥515 ≥205
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
06Cr23Ni13
(0Cr23Ni13) 		S30908 309S SUS 309S STS 309S 309S S30908 X12CrNi 23-13
X6CrNi23-13 		X7CrNi 23-14 1.4833 Z15CN 24-13 X12CrNi 23-13
X6CrNi23-13 		1.4833
1.4950 		10Х23Н13
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
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST
06Cr23Ni13
(0Cr23Ni13) 		S30908 309S SUS 309S STS 309S 309S S30908 X12CrNi 23-13 X7CrNi 23-14
X12CrNi 23-13 		1.4833
1.4833 		Z15CN 24-13 X12CrNi 23-13 1.4833 10Х23Н13
3 Approximate Comparison Table Austenitic Stainless Steel
China Japan United States International Organization for Standardization European Standard
ISC JIS UNS ISO Numerical Grade Numerical Grade
S30908 SUH309 S30908 X18CrNi23-13 4833-309-08-I 1.4833
4 Approximate Comparison Table Austenitic Heat-Resistant Steel
Japan United States France European Standard Russia United Kingdom
JIS ASTM UNS NF EN/NF EN Numerical Grade GOST BS EN/BS
SUS309S 309S S30908 Z15CN23-13 X12CrNi23-13 1.4833 20KH23N13 309S16
309S24

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