The steel grade is a classification of various steels based on their composition and physical properties.
There are over 3,500 different grades of steel. These grades can be split into four main categories.
* Carbon steel.
* Stainless steel.
* Alloy steel.
* Tool steel.
Steel can also be classified by several different factors such as;
1. Composition ( carbon range, alloy etc).
2. Finishing method ( hot rolled, cold rolled, etc).
3. Production method ( electric furnace, continuous casting etc).
4. Microstructure ( ferritic, pearlitic, martensitic, austenitic, etc)
5. Heat treatment (annealed, tempered, normalized), etc.
- STEEL NUMBERING SYSTEM.
The steel industry uses two major numbering systems to classify steel grades. The American Iron And Steel Institute (AISI) and Society Of Automotive Engineers ( SAE) systems.
Specifications such as those issued by AISI and SAE, provide a standard language for engineers, fabricators, and consumers to communicate the properties of steel.
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28 авг 2024
