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Chemical Compositions of SAE Wrought Stainless Steels
The chemical composition of standard types of wrought stainless steels are listed in ASTM Specification A240.
The UNS 20000 series designates nickel-chromium manganese, corrosion resistant types that are nonhardenable by thermal treatment.
The UNS 30000 series are nickel-chromium, corrosion resistant steels, nonhardenable by thermal treatment.
The UNS 40000 however, includes both a hardenable, martensitic chromium steel and nonhardenable, ferritic, chromium steel.
Reference to SAE J412 is suggested for general information and usage of these types of materials.
See Table 1.
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