Which Material Has Better Performance for Precision Tubes?

Precision tube of different materials have different performance characteristics and are suitable for different application scenarios. The following are the performance characteristics and applications of some common material precision tubes:

Carbon structural steel precision tubes

1. 10# precision tube

Low carbon content, good toughness and plasticity, excellent welding performance, easy to process and shape, but its strength is relatively low. It is suitable for occasions that do not require high strength but require good plasticity and weldability, such as some ordinary mechanical structural parts, piping systems, etc.

2. 20# precision tube

The strength is slightly higher than 10#, the cold deformation plasticity is high, there is little quenching, no temper brittleness, the welding performance of arc welding and contact welding is good, and cracks are prone to occur on parts with small thickness, strict appearance requirements or complex shapes during gas welding. The cutting processability is better in cold drawing or normalizing state than in annealing state. It is generally used to manufacture workpieces with low stress and high toughness requirements.

3. 35# precision tube

It has moderate carbon content, certain strength and toughness. After proper heat treatment, it can obtain good comprehensive mechanical properties and can be used to manufacture some mechanical parts that bear medium loads, such as shafts, rods, etc.

4. 45# precision tube

It belongs to medium carbon steel, with high strength and good wear resistance. After quenching and tempering, it can obtain good comprehensive mechanical properties. It is widely used in various important structural parts, such as connecting rods, bolts, gears and shafts, etc., but the surface hardness is low and not wear-resistant. It can be improved by quenching and tempering + surface quenching.

Alloy structural steel precision tube

1. 20Cr precision tube

It has high strength and hardness, and has certain toughness and plasticity. After quenching and tempering, it can obtain good comprehensive mechanical properties. It is often used to manufacture mechanical parts that require high strength, good plasticity and toughness, such as gears and shafts in automobiles and tractors.

2. 40Cr precision tube

Compared with 20Cr, it has higher carbon content and alloy element content, higher strength and hardness, good hardenability and wear resistance, and is often used to manufacture mechanical parts that bear large loads and impacts, such as engine crankshafts and connecting rods.

3. 20CrMo precision tube

Contains molybdenum, has high strength, toughness and heat resistance, and can still maintain good mechanical properties at high temperatures. It is often used to manufacture parts that work in high temperature environments, such as turbine blades and boiler superheater tubes.

Stainless steel precision tube

1. 304 stainless steel precision tube

It has good corrosion resistance, heat resistance, low temperature strength and mechanical properties, good hot processing properties such as stamping and bending, no heat treatment hardening phenomenon, and a use temperature range of -196℃～800℃. It is corrosion-resistant in the atmosphere and is widely used in the manufacture of equipment and parts that require good comprehensive performance, such as food production equipment, general chemical equipment, nuclear energy equipment, plate heat exchangers, bellows, auto parts, etc.

2. 201 stainless steel precision tube

Its corrosion resistance is slightly worse than 304 stainless steel, but it has higher strength and hardness, and its price is relatively low. It is often used in occasions where corrosion resistance is not high but strength and hardness are certain, such as decorative tubes, some structural parts, etc.

3. 310S stainless steel precision tube

It has higher heat resistance and corrosion resistance, can work stably for a long time in high temperature environment, and the maximum use temperature can reach about 1200℃. It is often used to manufacture high-temperature furnace tubes, heating elements, etc.

Other special alloy precision tubes

1. Titanium alloy precision tube

It has the advantages of light weight, high strength, strong corrosion resistance, and high temperature resistance. It is widely used in aerospace, marine engineering, chemical industry and other fields, such as aircraft structural parts, engine parts, seawater desalination equipment, etc.

2. Nickel alloy precision tube

It has excellent corrosion resistance, high temperature strength and oxidation resistance. It is often used to manufacture equipment and parts working in harsh corrosive environments and high temperature and high pressure conditions, such as reactors and heat exchangers in petrochemicals.