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What do these numbers of stainless steel models mean 304 304L 316 316L 321 2520 310, 317? What is the difference between them
American and national standards
304=0Cr18Ni9
304L=00Cr19Ni10
316=0Cr17Ni12Mo2
316L=00Cr17Ni14Mo2
321=0Cr18Ni10Ti
2520=0Cr25Ni20
317=0Cr19Ni13Mo3
The chemical composition is different
What is the full name of stainless steel 304, 304L, 316, 316L, 321?
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