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Grade 303Se
USA UNS S30323
Corresponding Standard ASTM A 314-2025
Standard Specification for Stainless Steel Billets and Bars for Forging
Classification Austenitic Stainless Steel
303Se Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Se
Minimum Value - - - - - 17 8 0.15
Maximum Value 0.15 1 2 0.2 0.06 19 10 -
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS GOST BS EN/BS
Y12Cr18Ni9Se S30327 303Se SUS 303Se STS 303Se 303Se S30323 12Х18Н10Е 303S41
2 Approximate Comparison Table Austenitic Stainless Steel
China Japan United States International Organization for Standardization European Standard
GB ISC JIS UNS ISO Numerical Grade Numerical Grade
Y12Cr18Ni9Se S30327 SUS303Se S30323 X12CrNiSe18-9 4625-303-23-X 1.4625
303Se Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
303Se S30323
2 ASTM A320/A320M-2018
303Se A320 B8FSe Class 1 S30323
3 ASTM A473-2018
303Se S30323
4 ASTM A582/A582M-2012(R2017)
303Se S30323
5 ASTM A959-2019
303Se S30323
6 ASTM A320/A320M-2021
303Se A320 B8FASe Class 1A S30323
7 ASTM A194/A194M-2023
303Se A194 Grade 8F S30323
8 CNS 3477-2016
303Se
9 ASTM A 314-2025
303Se S30323
10 ASTM A 473-2024(a)
303 Se S30323

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