304L Stainless Steel Sheet

The temperature limits of 304L stainless steel depend on the specific application and the duration of exposure to elevated temperatures. Generally, 304L stainless steel exhibits good high-temperature performance up to a certain range, but its mechanical properties may start to degrade at higher temperatures.

1. Continuous Use: The recommended maximum continuous service temperature for 304L stainless steel is around 925°C (1700°F). At temperatures above this range, the material may experience reduced mechanical properties, including tensile strength, hardness, and toughness.
2. Intermittent Use: For intermittent use or short-term exposures, 304L stainless steel can handle higher temperatures. It is generally safe to use the material at temperatures above 925°C (1700°F) for short periods without significant risk of failure.
3. Oxidation: At temperatures up to around 870°C (1600°F) in intermittent service and up to 925°C (1700°F) in continuous service, 304L stainless steel forms a protective oxide layer on its surface, which acts as a barrier against further oxidation.
4. Carbide Precipitation: The low carbon content of 304L stainless steel minimizes the risk of sensitization and carbide precipitation during welding and high-temperature exposure. This helps maintain good corrosion resistance even after heating.

It’s essential to consider the specific application and the mechanical properties required at elevated temperatures when using 304L stainless steel. For applications involving sustained high temperatures or cyclic heating, it might be more appropriate to choose a higher-grade stainless steel with better high-temperature properties, such as the 316L stainless steel, which offers improved performance at elevated temperatures due to its molybdenum content. Additionally, always refer to manufacturer specifications and consult with materials engineers or experts when working with stainless steel at elevated temperatures to ensure safe and reliable performance.