Whether the stainless steel plate or heat-resistant steel, austenitic steel plate of the best overall performance, both sufficient strength, but also excellent plastic hardness at the same time is not high, which is one of the reasons they are widely used. Austenitic stainless steel is similar to most other metal materials, its tensile strength, yield strength and hardness, with the temperature decreases; plasticity decreases with the temperature decreases. Its tensile strength in the temperature range of 15 ~ 80 ° C growth is more uniform. More importantly, with the decrease of temperature, the impact toughness decreased slowly, there is no brittle transition temperature. So the stainless steel at low temperatures to maintain adequate plasticity and toughness. Stainless steel heat resistance refers to the high temperature, both anti-oxidation or resistance to gas medium corrosion performance that is thermal stability.