What are the classifications of steel plate materials and how to choose steel materials?

With the development of society, people now have colored steel sheds when building houses. Everyone will definitely think that steel will be used inside, so you all know how to choose and buy steel. Are you going to buy? What are the classifications? Next, we will introduce to you what classifications of steel plate materials there are and how to buy steel. I hope what I said can help you.

1. What are the classifications of steel plate materials?

1. Steel materials are classified according to quality

(1). First, let’s talk about the material of our steel plates: ordinary steel (P≤ 0.045%, S≤0.050%)

(2). Next, let’s talk about high-quality steel material, steel (P and S are both ≤0.035%)

(3). Finally Let’s talk about the steel plate material, high-grade high-quality steel (P≤0.035%, S≤0.030%)

2.. Classification by chemical composition

(1). First introduce the steel plate material. Carbon steel, steel a. Low carbon steel (C≤0.25%); b. Medium carbon steel (C≤0.25~0.60%); c. High carbon steel (C≤0.60%).

(2). Let’s talk about the steel plate material, alloy steel, a. Low alloy steel (total alloying element content ≤ 5%); b. Medium alloy steel (total alloying element content 5~10%) ;c. High alloy steel (total alloy element content 10%).

3. In fact, steel materials are classified according to the forming method: (1) forged steel; (2) cast steel; (3) hot-rolled steel; (4) cold-drawn steel.

2. How to buy steel

1. When we buy steel, fake and inferior steel are prone to folding. Folds are various fold lines formed on the surface of steel. In fact, this defect often runs throughout the length of the entire product. The main reason for folding is that shoddy manufacturers pursue high efficiency and their reduction is too large, resulting in ears. Then folding occurs during the next rolling process. The folded product will crack after bending, and the strength of the steel will be greatly reduced. .

2. When purchasing steel, fake and inferior steel often has pitted surfaces on the surface. The pitting surface is an irregular uneven defect on the steel surface caused by severe wear of the rolling groove. Also, due to the pursuit of profits by fake and inferior steel manufacturers, groove rolling often exceeds the standard.

3. When purchasing steel, scabs are easy to form on the surface of fake and inferior steel. There are two reasons for this: a. The material of the fake and inferior steel is uneven and contains many impurities, and b. The guide equipment of the fake and inferior steel manufacturers is simple and easy to stick to the steel. These impurities can easily cause scarring after biting the rollers.

4. When purchasing, the surface of fake and inferior materials is prone to cracks. The main reason is that the raw material is adobe, which has many pores. The adobe is subject to thermal stress during the cooling process, so Cracks occur. After rolling, there are cracks.

In real life, steel plates are used in many places, but do you all know how to choose them? The above article talks about the classification of steel plate materials and how to choose steel materials. It’s not clear what the editor said.