Does stainless tube (304) oxidize i

[rhinelander]

Does stainless tube (304) oxidize if heated above 650 deg C
I heard that chromium oxide develops on it?
What temp will it occure?

 

[mcguire]

304 will oxidize from about 250C on up. The oxide at the lowest temperatures is straw colored and darkens progressively to black as oxidation temperature and scale thickness increase.