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Standard method for marking stainless steel tubes
Jun 26, 2017

The American Society of Iron and Steel is using three digits to mark a variety of standard grade wrought stainless steel. among them:

① Austenitic stainless steel with 200 and 300 series of digital signs, for example, some of the more common austenitic stainless steel

Is labeled 201, 304, 316 and 310,

② ferrite and martensitic stainless steel with 400 series figures. Ferritic stainless steel is marked with 430 and 446, martensitic stainless steel is 410,420 and 440C as the mark, biphasic (austenite - ferrite),

③ stainless steel, precipitation hardening stainless steel and iron content of less than 50% of the high alloy is usually a patent name or trademark name.

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