Low carbon steel: Easy to process, with good weldability, ductility and toughness, often used to manufacture large structures and car bodies and other parts that require strength and toughness. When welding, you need to choose a suitable arc welding method, control the welding current and voltage, and ensure that the welding surface is clean.
Medium carbon steel: It has good hot processing and cutting performance, but poor welding performance, and is suitable for manufacturing mechanical parts. When welding, you need to use low hydrogen electrodes, control the welding speed and temperature, and avoid cracks.
High carbon steel: It has extremely high hardness, but low plasticity, and is suitable for manufacturing cutting tools and spring steel, etc. When welding, you need to use appropriate preheating and post-heat treatment processes, control welding parameters, and avoid cracks and deformation.
Alloy steel: Because it contains a variety of alloy elements, special attention should be paid to preheating and post-heat treatment during welding to reduce the generation of residual stress and cracks. Choose the appropriate welding method and material to ensure welding quality and stability.