USA UNS S30900
AISI
American Iron and Steel Institute
309
Corresponding Standard ASTM A959-2019
Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Austenitic Stainless Steel
Properties High-Temperature Strength
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 22 12
Maximum Value 0.2 1 2 0.045 0.03 24 15
• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).
Approximate Comparison Table Austenitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
16Cr23Ni13
(2Cr23Ni13)
S30920 SUH 309 SUH 309 STR 309 309 S30900 X15CrNiSi 20-12 1.4828 Z15CNS 20-12 X15CrNiSi 20-12 1.4828 20Х20Н14С2 309S24

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