A573 Gr 70 carbon steel plate sheet astm welding

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SA516 grade 55, SA516 grade 60, SA516 grade 65, SA516 grade 70. These four grades A573 Gr 70 carbon steel plate sheet are mainly defined by different tensile and yield strength ranges, which are affected by carbon content.

The cold working performance of A573 Gr 70 carbon steel plate sheet and so on steel structure engineering steel is good, which can ensure that the steel will not crack or brittle fracture during high-temperature processing, and will not have a great impact on strength, plasticity and toughness due to processing. The durability of A573 Gr 70 carbon steel plate sheet and so on steel structure engineering steel is good. Durability refers to the service life of steel structure. The main factor affecting the service life of steel is the poor corrosion resistance of steel, followed by the deterioration of mechanical properties of steel under long-term load, repeated load and dynamic load.

Quenching and tempering (QT) is a double heat treatment process of quenching and high temperature tempering. In general, medium carbon steel and medium A573 Gr 70 carbon steel plate sheet carbon alloy steel often need quenching and tempering treatment. Quenching and tempering can make iron and steel parts obtain a good combination of strength and toughness, with high strength, excellent toughness, plasticity, cutting performance, etc. Some A573 Gr 70 carbon steel plate sheet alloy steel or low alloy steel must be quenched and tempered to obtain good comprehensive properties. These steels can also be called quenched and tempered steels.

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