Do you know the different grades of high strength structural steel which are commonly available?
I will introduce to you some different grades of high strength structural steel plate which are commonly available Today.
Low alloy high strength structural steel plate is produced through the incorporation of a small quantity of alloying components into carbon structural steel. (Wc=0.16%~0.2%). Its designation method is basically the same as that of carbon structural steel. So what are the main national standard numbers?
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The commonly used grades of national standard high-strength steel are Q420B, Q460C, Q550D, Q690D, Q890D, and Q960E.
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High-strength structural steel consists of Q + number + quality grade symbol + deoxidation method symbol. “Q” represents the yield point of the steel, and the middle value represents the value of the yield point, and the unit is MPa. For example, Q420B means that the yield stress (σs) is 420 MPa, and the grade is B-grade structural steel. Q420 grades include B, C, D, and E grades, and the delivery status includes hot rolling, normalizing, normalizing rolling, and hot mechanical rolling (TMCP).
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The main purpose
High-strength structural steel has high strength, good plasticity and welding performance, and is widely used in the manufacture of metal structures and welded structural parts of iron tower steel structures, bridges, chemical, mining, engineering machinery and other equipment; it can also be used in mining and various Equipment used in engineering construction, some examples of equipment include drilling rigs, electric shovels, electric wheel dump trucks, excavators, loaders, bulldozers, concrete pump trucks, fire ladders, different types of cranes, and hydraulic supports used in coal mines.
Post time: May-23-2023
