EN S420ML standard pdf hot rolled technique

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XAR450 steel is a special structural steel material with high wear resistance. The average hardness of this special wear-resistant structural steel is 450HB, which has high hardness and good toughness. The structure built with this steel is stronger, lighter and can withstand impact loads. XAR450 steel is used for wear parts-exposed structures such as protective pads, shell walls, support and reinforcement plates for excavators, mining machines and bulldozers.

Quenching and tempering (QT) is a double heat treatment process of quenching and high temperature tempering. In general, medium carbon steel and medium EN S420ML standard pdf 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 EN S420ML standard pdf 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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