Yes, but the maximum operating temperature of stainless steels varies with the grade and its microstructure. Many stainless steels form the deleterious sigma phase over time at elevated temperature, losing impact toughness and corrosion resistance.
For this reason, duplex and super duplex grades should not be used above 250degC except for very short periods. Other grades, particularly ferritic stainless steels, can embrittle above 475degC, with a catastrophic loss of mechanical properties.
Most grades also soften and lose strength as temperature rises. However, more highly alloyed austenitic grades can be used beyond 500degC. If in doubt, our experienced team, which includes several metallurgists, can advise.