Consider the physical properties, mechanical properties and chemical composition of the weldment material
Release time:
2025-04-29
(1) For welding of structural steel, the principle of equal strength is generally considered, and welding materials that meet the mechanical property requirements of the joint are selected.
(2) For welding joints between low-carbon steel and low-alloy steel, welding materials corresponding to the steel with lower strength grade are generally selected.
(3) For welding of heat-resistant steel and stainless steel, in addition to considering strength, the main chemical composition of the weld metal should also be considered to be close to the chemical composition of the parent material.
(4) When the chemical composition of the parent material contains high levels of harmful impurities such as carbon or sulfur, phosphorus, etc., welding materials with stronger crack resistance should be selected. Such as low-hydrogen welding materials.