A572 GR 50 is a high strength low alloy
steel. Grade 50 is difficult to form since it contains more alloying elements
than plain steel, but offers more strength per unit of weight. Because of its high strength it requires less
material to satisfy strength requirements than plain carbon steel. It has a yield strength 50,000 psi
minimum, tensile strength of 65,000, and elongation of 19% in 2”. This material
is easily welded using commercial methods. Due to the alloy elements of the
metal its atmospheric corrosion resistance is increased. Additionally, it is
considered a “workhorse” grade because of its strength to weight ratio and
corrosion resistance. A572 is commonly used in cranes, truck frames, building
structures, construction, bridges, liners and many more applications where a
high strength per weight ratio is needed.
