A514 Gr Q plate is a high strength weldable quenched and tempered steel plate according to ASTM standard. A283 grade C mild steel coil, A514 Gr Q plate is mainly used in places requiring high tensile strength and high yield. A514 Gr Q or A514 Gr Q modified are generally used for lifting gear of engineering vehicle and rack of offshore platform. It varies with thickness. Its hardness is 235-290, yield is more than 630MPa, and tensile strength is more than 700MPa.
Hydrogen (H) is the most harmful element in general steel such as A283 grade C mild steel coil. Hydrogen dissolved in steel will cause hydrogen embrittlement, white spots and other defects. Hydrogen, like oxygen and nitrogen, has very little solubility in solid steel. It dissolves into liquid steel at high temperature, and accumulates in the structure without time to escape when cooling, forming high-pressure micro pores, which greatly reduce the plasticity, toughness and fatigue strength of steel, and even cause cracks and brittle fracture in severe cases. "Hydrogen embrittlement" mainly occurs in martensitic steel, but not very prominent in ferrite steel, and generally increases with hardness and carbon content.
The heat treatment process can significantly improve the physical properties of steel, improve the compressive strength, ductility and service life of parts, and improve the hardness and wear resistance. Therefore, critical equipment parts and special tools must be quenched and tempered. The quenching and tempering treatment can also improve the production and processing performance of the A283 grade C mild steel coil product workpiece, thereby improving the production efficiency and production processing quality.
Steel is an alloy of iron with carbon, silicon, manganese, phosphorus, sulfur and a small amount of other elements. In addition to iron, carbon content plays an important role in the mechanical properties of A283 grade C mild steel coil and so on steel. Iron and steel is an important raw material for machinery, construction, hardware and other industries. As an important pillar industry, the development of iron and steel has a glorious period, in which Tangshan was once an important production base of China's iron and steel. This is closely related to its geographical location and energy advantages.
