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Basic knowledge of commonly used steel

Published on:

2022-06-13 19:06

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First, the classification method of steel

There are various classification methods of steel, and there are eight main methods:

1. Classification by quality

(1) General steel (phosphorus P≤0.045%, sulfur S≤0.050%)

(2) High-quality steel (both P and S ≤0.035%)

(3) High quality steel (P≤0.035%, S≤0.030%)

The Qinghai Xining steel structure, steel bridge and garbage hopper mainly produced by Huangzhong Cangsheng Steel Structure Factory are all made of high-quality steel from large steel mills.

2. Classification by chemical composition

(1) Carbon steel: a. low carbon steel (carbon C≤0.25%); b. medium carbon steel (carbon C≤0.25~0.60%); c. high carbon steel (carbon C≤0.60%).

(2) Alloy steel: a. Low alloy steel (total content of alloy elements ≤ 5%); b. Medium alloy steel (total content of alloy elements > 5~10%); c. High alloy steel (total content of alloy elements > 10%) %).