What are the high-strength steel materials?
Commonly used materials for national standard high-strength steel: Q420B, Q460C, Q550D, Q690D, Q890D, Q960E, which are low-alloy high-strength structural steels. It consists of Q+number+quality grade symbol+deoxidation method symbol. "Q" represents the yield point of steel, and the following value represents the yield point value, and the unit is MPa. For example, Q420B represents a structural steel with a yield stress (σs) of 420 MPa and a grade of B. The delivery status includes hot rolling, normalizing, normalizing rolling, and hot mechanical rolling (TMCP).
High-strength steel uses:
High-strength structural steel has good plasticity and is widely used in the manufacture of metal structures and welded structural parts for tower steel structures, bridges, chemical industry, mining, engineering machinery and other equipment; such as drilling rigs, electric shovels, electric wheel dumpers, excavators, loaders, etc. Machines, bulldozers, concrete pump trucks, fire ladders, various cranes and coal mine hydraulic supports, etc.
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