ASTM A572 Grade 50 low alloy high strength steel plates obtain high properties, especially excellent comprehensive properties with lower alloy composition. For example, the best match of high strength and toughness, the compatibility of weldability and machinability, and so on, rather than pursuing high index of a single performance (such as strength).
The contradiction between low alloy composition and high performance requirements requires technological means to improve the performance of ASTM A572 Grade 50 low alloy steel as much as possible. The method adopted is to improve the comprehensive properties of ASTM A572 Grade 50 low alloy steel by adding a small amount of one or more alloy elements.
The main production process of ASTM A572 Grade 50 low alloy steel plates are:
1. Improve the purity of ASTM A572 Grade 50 low alloy steel and to control the content of carbon and alloying elements in the appropriate range.
2. Controlling the form of inclusions;
3. Improve the structure of ASTM A572 Grade 50 low alloy steel, improve the strength and toughness etc. comprehensive properties .
It is of great significance to improve the purity of ASTM A572 Grade 50 low alloy steel. Because the alloying element content of low alloy and high-strength steel is usually low, and some of them are even stimulated. Only by removing impurity elements thoroughly, can alloy elements play a full role.
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