ASTM A588 is a high strength low alloy steel in the American Standard ASTM A588 A/588 M-15 for anti-atmospheric corrosion. Based on the structural design of the car body

research on technology test for the ASTM A588 high strength low alloy steel butt joints with different groove form

tensile and bending tests are conducted for 8 HV and 4 DHV groove welded joints at room temperature

and the low temperature impact test is conducted for the weld and heat affected zone at the temperature of-40℃. The results show that

the 8 HV welded joint has high tensile strength

good plasticity and ductility

and has good low-temperature impact toughness

have reached the standard requirements of AWS D1.1-D1.1 M-2015

recommend butt joints with a plate thickness of 8 mm and below have a single-sided groove form

provide a theoretical basis for the design of welding structure of vehicle body.