The deoxidation ability of Al is much stronger than that of Si and Mn when aluminum element (Al element) is added into steel as deoxidizer or alloying element. The main role of aluminum in A709 grade 50W bridge steel plate etc. steel is to refine grain size and fix nitrogen in steel, so as to significantly improve the impact toughness of steel and reduce the tendency of cold brittleness and aging. Al element can also improve the corrosion resistance of steel, especially when used with molybdenum, copper, silicon, chromium and other elements. The wear resistance of chromium molybdenum steel and chromium steel can be increased by containing Al element.
In terms of service, our service is a "one-stop" way of working. We have our own A709 grade 50W bridge steel plate processing plant and pretreatment plant, pretreatment of ship steel (shot blasting, derusting, painting). Technical parameters of steel plate and profile steel surface pretreatment production line. We can also let customers enjoy our other pretreatment services, such as A709 grade 50W bridge steel plate cutting, welding, drilling, galvanizing, etc., at the lowest cost.
A283 Gr A steel composition(%)Carbon, max 0.14Manganese, max 0.90Silicon: 0.40 0.15-0.40Phosphorus, max 0.035Sulphur, max 0.04A283 Gr A steel plate mechanical propertyTensile Strength: 45, 000 -60, 000 psi [310 - 415 MPa]Min. Yield Point: 24, 000psi [165 MPa]Elongation in 8"": 27% minElongation in 2"": 38% min
Hot continuous rolling can be divided into ordinary carbon structural steel, low alloy steel and alloy steel according to materials and properties. According to the different uses, it can be divided into: cold forming steel, structural steel, automobile structural steel, corrosion-resistant structural steel, mechanical structural steel, A709 grade 50W bridge steel plate, welding gas cylinder and pressure vessel steel, pipeline steel, etc. We adhere to the tenet of "customer first, quality assurance and good reputation", and always provides high-quality products for our customers.
