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Home Material ASTM F899-2020
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Grade 440A
USA UNS S44002
Corresponding Standard ASTM F899-2020
Wrought Stainless Steels for Surgical Instruments
Classification Martensitic Stainless Steel
440A Chemical Element Composition Content (%)
Component C Si Mn P S Cr Mo
Minimum Value 0.6 - - - - 16 -
Maximum Value 0.75 1 1 0.04 0.03 18 0.75
1 Approximate Comparison Table Martensitic Stainless Steel
China Taiwan, China Japan South Korea United States
GB ISC CNS JIS KS ASTM UNS
68Cr17
(7Cr17) 		S44070 440A SUS 440A STS 440A 440A S44002
2 Approximate Comparison Table Martensitic Stainless Steel
China Japan United States International Organization for Standardization European Standard
ISC JIS UNS ISO Numerical Grade Numerical Grade
S44070 SUS440A S44002 X68Cr17 4040-440-02-X (1.4040)
440A Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
440A S44002
2 ASTM A276/A276M-2017
440A S44002
3 ASTM A473-2018
440A S44002
4 ASTM F899-2020
440A S44002
5 ASTM A959-2019
440A S44002

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