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Question :What grade of stainless steel could we specify for our steel metal component?
Answer:
The main grades in 200 series are : 201 and 202. In The official American standard, the Ni content is 3-4%. This is much different from the actual market situation, in china, the best 200 series manufacture is LISCO. And the Ni content is min 1%, 202 is min 2% .
The main material of 300 series are : 304, 304L, 309, 309S, 309H, 310, 310S , 316, 316L, 317, 317L, 321.
The main material of 400 series are : 409, 410 and 430. Ni content in 400 series stainless steel is not so high as 300 series stainless steel, but it have very good heat-resistant performance because of it's Cr content.
Stainless steel standard in America is ASTM A240 or ASME SA 240.
Please have a look at our design data section where we have more information on these materials and their uses, treatments and finishes.