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Grade 446
USA UNS S44600
Corresponding Standard ASTM A 276-2006
Stainless Steel Bars and Shapes
Classification Ferritic Stainless Steel
Properties Corrosion Resistance
446 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - - - - - 23 - -
Maximum Value 0.2 1 1.5 0.04 0.03 27 0.75 0.25
1 Approximate Comparison Table Ferritic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States
GB ISC CNS JIS KS ASTM UNS
16Cr25N
(2Cr25N) 		S12550 SUH 446 SUS 446 STR 446 446 S44600
2 Approximate Comparison Table Ferritic Stainless Steel
China Japan United States International Organization for Standardization European Standard
ISC JIS ASTM UNS ISO Numerical Grade EN Numerical Grade
S12550 SUH446 446 S44600 X15CrN26 4749-446-00-I X18CrN28 1.4749
3 Approximate Comparison Table Ferritic Stainless Steel
United States France European Standard
ASTM UNS NF EN/NF EN Numerical Grade
446 S44600 X15CrN26 X18CrN28 1.4749
446 Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
446 S44600
2 ASTM A 276-2006
446 S44600
3 ASTM A276/A276M-2017
446 S44600
4 ASTM A473-2018
446 S44600
5 ASTM A240/A240M-2020
446 S44600
6 ASTM A959-2019
446 S44600

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