American Iron and Steel Institute with three digits to mark a variety of standard grade wrought stainless steel. Where:
An austenitic stainless steel with 200 and 300 series digital mark,
2, ferritic and 410 ss plate stainless steel 400 series is represented by numbers. For example, some of the more common austenitic stainless steel
Is 201, 304, 316 and 310 marks,
3, 430 grade stainless steel stainless steel is marked 430 and 446, 410, 420 and 440C martensitic stainless steel is a scalar
Remember, duplex (austenitic - ferritic),
4, stainless steel, precipitation hardening stainless steel and high-alloy iron content of less than 50% usually uses proprietary name or trademark name.
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