2Cr13 is a martensitic stainless steel with good magnetic properties and good hardness. It needs to be preheated before welding. When welding with Q235 , austenitic stainless steel electrodes do not need to be preheated. When welding, use a smaller current. The welding materials for 2Cr13 welding can be:For atmospheric corrosion resistance, choose G202 and G207, which need to be preheated to 150-300 degrees and tempered to 700-730 degrees after welding;2. Organic acid and heat resistant: G211, preheating 150-300 degrees is required;3. Good plasticity: A102, A107, A202, A207, A302, A307, preheating for repair welding , preheating for thick and large parts.

Chemical composition: C:0.16-0.25; Si≤1.00; Mn≤1.00; S≤0.03; P≤0.04; Cr:12-14; Ni≤0.60