Austenitic stainless steel

- AISI 304, 304L, 316, 316L, 904L

"Austenitic stainless steel is a specific type of stainless steel alloy. 

300 Series austenitic stainless steel has austenite as its primary phase (face centered cubic crystal).

These are alloys containing chromium and nickel, and sometimes molybdenum and nitrogen, structured around the Type 302 composition of iron, 18% chromium, and 8% nickel. 200 Series austenitic stainless steels replace the majority of their nickel content with manganese to reduce cost.

The most familiar stainless steel is probably SAE 304 stainless steel, also called 18/8 or A2 stainless steel. Type 304 surgical stainless steel is an austenitic steel containing 18–20% chromium and 8–10% nickel." (from Wikipedia).

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