1. How many kinds of steel are there?
1. Steel is an iron-carbon alloy with a carbon content between 04% and 3%. In order to ensure its toughness and plasticity, the carbon content generally does not exceed 7%. In addition to iron and carbon, the main elements of steel are silicon, manganese, sulfur, phosphorus, etc.
2. According to the chemical composition of steel, it can be divided into two categories: carbon steel and alloy steel.
Carbon steel: according to the carbon content, it can be divided into low carbon steel (carbon content 25%); Medium carbon steel 25% "carbon content <6%); High-carbon steel (6% carbon).
3. There are several types of steel materials Steel is divided into four types: profiles, plates, building materials, and pipes. Among them, profiles and plates can be divided into Q235B, Q345B, Q355B classification, while building materials are HRB400E, pipes are Q235B. The types of profiles can be divided into H-beams, I-beams and so on.
4. The materials of steel include carbon structural steel, low-alloy high-strength structural steel, tool steel, carbon tool steel, alloy tool steel and other materials. Carbon structural steel: used in buildings, bridges, ships, vehicles and other structures, carbon steel must have a certain strength, if necessary, impact performance and welding performance.
Understand the material and classification of steel in minutes! Steel is an iron-carbon alloy with a carbon content between 04% and 3%. In order to ensure its toughness and plasticity, the carbon content generally does not exceed 7%. In addition to iron and carbon, the main elements of steel are silicon, manganese, sulfur, phosphorus, etc.
6. The materials of better answer steel include carbon structural steel, low-alloy high-strength structural steel, tool steel, carbon tool steel, alloy tool steel and other materials.
Carbon structural steel: carbon steel used in buildings, bridges, ships, vehicles and other structures, where impact performance and welding performance are required.
Second, what are the material models of steel?
1. The types of profiles include H-beam, I-beam, channel steel and angle steel. Among them, the plates include medium and heavy plates, pattern plates, pattern rolls, and open plates. Steel is generally divided into four categories, profiles, plates, building materials, and pipes.
2. Its representative material (grade): carbon steel 245 steel; Alloy steel Q3420Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc. GB T8163 (seamless steel pipe for conveying fluids). It is mainly used for conveying fluid pipelines in engineering and large-scale equipment. The representative material (grade) is 2q345 and so on.
3. Today, I will talk about some steel models and properties commonly used in factories, which are quite practical. 45——High-quality carbon structural steel, which is more commonly used medium carbon quenched and tempered steel. Main features: More commonly used medium carbon quenched and tempered steel, with good comprehensive mechanical properties, low hardenability, and easy cracks when water quenching. Small parts should be quenched and tempered, and large parts should be normalized.
4. The materials are generally 201, 304, 304L, 316, 316L, 321 and so on. This is distinguished according to the chemical composition, mainly C element, Cr element and Ni element and Ti, etc., there are different models with different contents, personal opinions, for reference only What are the materials of channel steel? Channel steel is divided into ordinary channel steel and light channel steel.
5. Fourth, special steel: refers to the special steel used in various industrial sectors, such as automobile steel, agricultural machinery steel, aviation steel, machinery manufacturing steel, heating furnace steel, electrical steel, welding wire, etc. At the same time, the specifications of different welded pipe products are also different, which are usually expressed in nominal caliber.