A36 hot rolled steel unequal leg angles are an excellent candidate for most processing techniques. A36 material is a low carbon steel, often referred to as mild steel which is long lasting and durable. A36 hot roll steel unequal leg angles have a rough blue-grey finish, with round or tapered edges. Common applications include structural support, trailers, bracing, and brackets. ASTM A36 / A36M-08 is the standard specification for carbon structural steel. Through galvanization processes A36 hot rolled angles will resist corrosion.