Grade 303
USA UNS S30300
Corresponding Standard ASTM F899-2020
Wrought Stainless Steels for Surgical Instruments
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
303 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo
Minimum Value - - - - 0.15 17 8 -
Maximum Value 0.12 1 2 0.06 0.35 19 10 0.7
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade BS EN/BS
Y12Cr18Ni9
(Y1Cr18Ni9)
S30317 303 SUS 303 STS 303 303 S30300 X10CrNiS 18-9 4305-303-00-I X8CrNiS 18-9
(X10CrNiS 18-9)
1.4305 Z10CNF 18-09 X8CrNiS 18-9 1.4305 303S21
2 Approximate Comparison Table Ferritic Stainless Steel
Japan United States France European Standard Sweden United Kingdom
JIS ASTM NF EN/NF EN Numerical Grade SS BS EN/BS
SUS303 303 Z8CNF18-09 X8CrNiS18-9 1.4305 2346 303S31
3 Approximate Comparison Table Free-Cutting Steel 1
China United States Germany
GB ASTM DIN EN/DIN
Y0Cr18Ni10
(Y18-8)
303 X2CrNiS18-8

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