2Cr13 steel should belong to stainless steel from the classification point of view. A more accurate classification should be attributed to martensitic stainless steel. It is mainly used for machining and has a better cost performance than normal stainless steel. Therefore, it does not require corrosion resistance. In the case of high, it has been more widely used. 2Cr13 can get better mechanical properties after quenching treatment, has better workability, and the structure is martensitic.

Characteristics and scope of application: High hardness and good corrosion resistance in the quenched state. Used as a steam turbine blade.
The density of 2Cr13 is 7.75g/cm3
Quenching hardness of 2Cr13: Generally, the quenching temperature of 2Cr13 is 980～1050℃, the hardness of 980℃ heating oil quenching is obviously lower than 1050℃ heating oil quenching, 980℃ oil quenching hardness is 45-50HRC, 1050℃ oil quenching hardness To be 2HRC higher. However, the grains of the structure obtained after quenching at 1050°C are relatively coarse and brittle. It is recommended to use 1000℃ heating and quenching to get better structure and hardness.

2Cr13 martensitic stainless steel, preheated for welding. Austenitic stainless steel electrodes for welding with Q235 do not need to be preheated, such as A302.A307. When welding, the dilution rate of the weld is controlled, and the welding is not wobbled, and a smaller current is used.

2Cr13 welding consumables can be selected:
1. Choose G202, G207 for atmospheric corrosion resistance, preheating 150-300 degrees, and tempering 700-730 degrees after welding;
2. Resistance to organic acid and heat resistance: G211, need to be preheated 150-300 degrees;
3. Good plasticity: A102, A107, A202, A207, A302, A307, preheating for repair welding, preheating for thick and large parts.