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The table shown is based on the reference data presented in BS EN 10088-1. Only a sample of the information available is shown. This is intended to show the scope of information available through representative figures for the most commonly used stainless steel types.
The maximum oxidation service temperatures for heat resisting steels is shown 'for guidance only' in table B.2 of EN 10095. Although helpful, this only covers the steels specifically designed for heat resisting applications.
The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. The heat tint or temper colour formed is caused by the progressive thickening of the surface oxide layer and so, as temperature is increased, the colours change. Oxidation resistance of stainless steels
Stainless steels are alloys and therefore do not melt and freeze at a fixed temperature, as do metallic elements, but over a temperature range, depending on the chemical composition of the steel.