Precautions for ASTM A514 steel welding

ASTM A514 steel is high strength, low alloy, quenched and tempered steel that is used to reduce weight and costs, as well as improve welding productivity. Although ASTM A514 steel has been available for many years, it continue to pose some distinct challenges for welders. ASTM A514 steel welding needs precautions for some key factors, including filler metal choices and preheating and interpass heat requirements.

ASTM A514 steel welding is not complicated when those precautions, especially with filler metal choices, are used. A primary concern is filler metal hydrogen content. ASTM A514 steel is sensitive to diffusible hydrogen, which may result in hydrogen cracking. The filler metal strength depends on the application of ASTM A514 steel.

Even though ASTM A514 steel is readily weldable, excessive preheat and interpass temperatures and welding heat input can affect the alloy's chemical properties.