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For ASTM A514 structural steel material, automobile steel sheet materials, it must have excellent pressure-bearing performance. Automobile steel sheets of substandard quality are prone to fracture problems, which also cause waste and consumption of production materials, and directly increase the production cost of automobiles. Generally, the qualified automobile steel sheets used in automobile manufacturing are high-strength steel plates. The high-quality automobile steel sheets are more durable and improve the quality of the entire automobile.
Application of ASTM A514 structural steel material stainless steel coil: 1. Automobile industry. As a structural material of automobile, stainless steel coil can not only greatly reduce the weight of vehicle, but also greatly improve the service life of automobile. 2. Water storage and transportation industry. The storage and transportation equipment based on stainless steel coil is recognized as the most sanitary, safest and most efficient water industry equipment. 3. The construction industry. The decorative panels of exterior walls and interior walls are generally made of stainless steel, which is not only durable, but also very beautiful.
The cold bending method is mainly used to produce cold-formed section steel and welded pipe. The cold bending method is to bend the steel strip or steel plate into various cross-section shapes by the cold bending machine in the cold state. If the ASTM A514 structural steel material steel pipe is bent into a circular, square or other hollow shape and welded by a proper welding method, it is a welded pipe. The advantages of cold bending: first, the cold-formed section steel is light in weight and large in bearing capacity, and it can save metal by replacing the hot-rolled section steel; second, it can produce all kinds of ASTM A514 structural steel material extremely thin, extremely wide and complex section steel which can not be produced by hot rolling.
The quality grade symbols of Q235 steel plate are A, B, C and D respectively. Different grades represent different impact temperatures. ASTM A514 structural steel material, Q235A is not required for impact toughness test; Q235B is required for impact toughness test at room temperature (20 ℃); Q235C is required for impact toughness test at 0 ℃; Q235D is required for impact toughness test at - 20 ℃. For the above-mentioned B, C and D grade steels, Akv ≥27J is required under different temperature requirements. At different impact temperature, the impact value is also different.
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