The discussion focuses on the mechanical properties of 303 stainless steel at elevated temperatures, specifically around 800°C. It confirms that 303 stainless steel exhibits good oxidation resistance in continuous service up to 870°C and intermittent service up to 760°C. However, continuous service between 430°C and 850°C is discouraged due to the risk of intergranular corrosion. Comparisons with 304 stainless steel indicate that while their properties are similar, 304L and 321 grades offer better resistance to scaling at high temperatures.
PREREQUISITESEngineers, materials scientists, and professionals involved in the selection and application of stainless steels in high-temperature environments will benefit from this discussion.
You might consult these links:yangshi said:Does anyone have a source for 303 stainless steel mechanical properties (YS, UTS, modulus, poisson's) with variation to temperature, especially around 800C? I've been searching a lot of sites... Or would it be fine to assume 303 has "good resistance to scaling at up to 871C" from http://www.suppliersonline.com/propertypages/303.asp?
Interlloy said:Elevated Temperature Properties
303 displays good oxidation resistance in continuous service up to 870 °C and in intermittent service up to 760 °C.
Continuous service however, between 430 °C and 850 °C is not recommended, nor is slow cooling through this range due to the problem of intergranular corrosion.
N.B. High temperature use is therefore not generally recommended.