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Carbon steel is made of steel

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Carbon steel is made of steel

November 18, 2022

Carbon steel is an iron-carbon alloy with carbon content ranging from 0.0218% to 2.11%. Also known as carbon steel. Generally also contains a small amount of silicon, manganese, sulfur, phosphorus. Generally, the higher the carbon content of carbon steel, the greater the hardness, the higher the strength, but the lower the plasticity.
 
Because no other alloying elements are added, it is relatively easy to oxidize and rust. The carbon steel content is higher the hardness will be greater, and the strength is higher, relatively speaking, the plastic will be lower, the price is relatively low.
 
Grades and uses of carbon steel:
 
1. Ordinary carbon structural steel: According to the yield strength of steel, carbon structural steel can be divided into 5 grades: Q195, Q215, Q235, Q255, Q275. Each brand is divided into A, B, C and D grades due to different quality. Q195, Q215, Q235 good plasticity, can be rolled into steel plate, steel bar, steel pipe, etc. Q255, Q275 can be rolled into section steel, steel plate, etc.
 
2. High quality carbon structural steel: steel number is expressed by the average mass fraction of carbon content. Such as 20#, 45#, etc. Purpose: Mainly used for manufacturing various machine parts.
 
3. Carbon tool steel: Steel number is expressed by the average mass thousandth fraction of carbon content, and is prefixed with T. Such as T9, T12 and so on. Usage: Mainly used for manufacturing various cutting tools, molds, measuring tools and so on.
 
4. Cast steel: The cast steel grade is prefixed with ZG before the number. Application: Mainly used for manufacturing complex shape and need a certain strength, plasticity and toughness parts, such as gear, coupling, etc.