Compared with carbon steel:
1. Density:
The density of carbon steel is slightly higher than that of ferritic and martensitic stainless steels, and slightly lower than that of austenitic stainless steels;
2. Resistivity:
The resistivity is in increasing order of carbon steel, ferritic, martensitic and austenitic stainless steel;
3. The order of linear expansion coefficient is similar, austenitic stainless steel is the highest and carbon steel is the smallest;
4. Carbon steel, ferritic and martensitic stainless steels are magnetic, while austenitic stainless steels are non-magnetic, but they will produce magnetism when they are cold-worked and hardened to form martensite transformation. Heat treatment can be used to eliminate this martensite. The tissue is restored to its non-magnetic properties.
Compared with carbon steel, austenitic stainless steel has the following characteristics:
1) High resistivity, about 5 times that of carbon steel.
2) Large linear expansion coefficient, 40% larger than carbon steel, and as the temperature rises, the value of the linear expansion coefficient increases accordingly.
3) Low thermal conductivity, about 1/3 of carbon steel