alloy steel
With the Steel Plate development of science and technology and industry, the material has put forward higher requirements, such as higher strength, high temperature, high pressure, low temperature, corrosion resistance, wear and other special physical and chemical performance requirements, carbon steel is not complete Fulfil requirements.
Steel Plate in the performance of the main aspects of the following deficiencies:
(1) low hardenability. Under normal circumstances, carbon steel quenching the maximum quenching diameter of only 10mm-20mm.
(2) strength and yield strength is relatively low. Such as ordinary carbon steel Q235 steel σs 235MPa, while the low-alloy structural steel 16Mn σs was more than 360MPa. 40 steel σs / σb only 0.43, much lower than the alloy steel.
(3) poor tempering stability. Due to poor tempering stability, carbon steel in the quenching and tempering treatment, in order to ensure a higher strength to use a lower tempering temperature, so that the toughness of steel is low; in order to ensure better toughness, the use of high temper Temperature and low strength, so the comprehensive level of comprehensive mechanical properties of carbon steel is not high.
(4) can not meet the requirements of special performance. Steel Plate in the oxidation, corrosion resistance, heat resistance, low temperature resistance, wear resistance and special electromagnetic and other aspects are often poor, can not meet the needs of special performance.
Steel Plate and steel plate in general the same. In addition to the various aspects of the board, in addition to the bridge steel plate, boiler steel plate, automobile manufacturing steel plate, pressure vessel steel plate and multi-layer high pressure vessel steel plate and other varieties are pure plate, some varieties of steel plate such as automobile girder steel plate (thickness 2.5 ~ 10mm) Steel plate (thickness 2.5 to 8 mm), stainless steel plate, heat-resistant steel plate and other varieties are crossed with the same sheet.
Another plate there Steel Plate is a material that is not all the steel are the same, the material is not the same, the steel used to the place, not the same.
