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1. What's the difference in composition and performance?
1. Composition: 20 # precision seamless steel pipe is different from 45# precision steel pipe. No.20 precision seamless steel pipe is a kind of low carbon steel, which mainly contains carbon, silicon, manganese, phosphorus, sulfur and other elements, among which the carbon content is low and the strength and hardness are relatively low. 45# precision steel pipe is a kind of medium carbon steel, and its main components include carbon, silicon, manganese, chromium, nickel and other elements, among which the carbon content is high, and the strength and hardness are relatively high.
2. Performance: Due to different compositions, the performance of 20 # precision seamless steel pipe and 45# precision steel pipe is different. No.20 precision seamless steel pipe has good plasticity and toughness, and is suitable for manufacturing parts requiring certain strength and toughness. The 45# precision steel pipe has high strength and hardness, which is suitable for manufacturing parts that need to bear large loads.
Second, the differences in the field of use.
1. industrial field: No.20 precision seamless steel pipe is widely used in petrochemical industry, machinery manufacturing, automobile manufacturing and other industrial fields. Suitable for manufacturing parts and structural parts with general strength requirements, such as pipes, containers, supports, etc. And 45# precision steel pipe is also widely used in industrial fields, such as heavy machinery, shipbuilding, mining machinery and so on. It is suitable for manufacturing high-strength and high-hardness parts and structural parts such as shafts, gears and sprockets.
2. Building field: In the building field, No.20 precision seamless steel pipe is usually used for building structural support, bridges, highways, etc. It has good plasticity and toughness, and can meet the requirements of buildings for structural safety. However, 45# precision steel pipe is less used in the construction field, mainly because of its high strength and hardness, which is not easy to bend and cut, and is not as convenient as 20 # precision seamless steel pipe.
Third, the differences in manufacturing processes.
1. production process: the production process of No.20 precision seamless steel pipe is relatively simple, and it can be made by cold drawing, heat treatment and other processes. However, the production process of 45# precision steel pipe is relatively complicated, which requires multiple processes and heat treatment to ensure its high strength and hardness.
3. Manufacturing difficulty: Due to different production processes, the manufacturing difficulty of 20 # precision seamless steel pipe and 45# precision steel pipe is also different. No.20 precision seamless steel pipe has relatively low manufacturing difficulty, easy production and high yield. The manufacturing difficulty of 45# precision steel pipe is relatively high, so it is necessary to strictly control the production process and heat treatment process to ensure its high strength and hardness.
Fourth, the difference between price and supply.
1. Price: Due to the complex composition and manufacturing process of 45# precision steel pipe, its price is relatively high. The price of 20 # precision seamless steel pipe is relatively low and the cost performance is high.
2. Supply: In terms of supply, the supply of No.20 precision seamless steel pipe is sufficient and generally does not need to be customized. The supply of 45# precision steel pipe is relatively small, so it needs to be customized or purchased in advance. ? There are some differences between 20 # precision seamless steel pipe and 45# precision steel pipe in composition, performance, application field, manufacturing technology, price and supply. It is the key to choose the appropriate steel pipe material according to the actual demand and application.