USA UNS S18235
Corresponding Standard ASTM F899-2020
Wrought Stainless Steels for Surgical Instruments
Classification Ferritic Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N Ti More
Minimum Value - - - - 0.15 17.5 - 2 - 0.03 C+N≤0.035
Maximum Value 0.025 1 0.5 0.04 0.35 18.5 1 2.5 0.025 1
Approximate Comparison Table Ferritic Stainless Steel
United States International Organization for Standardization European Standard
UNS ISO Numerical Grade Numerical Grade
S18235 X2CrMoTiS18-2 4523-182-35-I 1.4523

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