Grade 3 titanium alloy is a medium-strength titanium alloy, UNS number R50550, which is widely used in aviation, chemical industry, medical equipment and other fields. Its main characteristics are good corrosion resistance, high strength and toughness, and good weldability and machinability, which is suitable for a variety of engineering needs.
The impurity content of industrial pure titanium is higher than that of chemical pure titanium, so its strength and hardness are slightly higher. Its mechanical and chemical properties are similar to those of stainless steel. Compared with titanium alloy, pure titanium has lower strength and better plasticity. It can be welded, cut and has good corrosion resistance. It is better than austenitic stainless steel in oxidation resistance, but has poor heat resistance. The impurity content of Grade1, Grade2 and Grade3 increases successively, and the mechanical strength and hardness increase successively , but the plasticity and toughness decrease successively .
It is mainly used for stamping parts and corrosion-resistant structural parts with working temperature below 350℃, which are not subjected to much force but require high plasticity, such as aircraft frames, skin ship valves, pipelines, seawater desalination equipment, pumps, cooler agitators, distillation towers, impellers, compressor valves, diesel engine pistons, etc. Grade1 and Grade2 can be used as low-temperature structural materials below -253℃ due to their good low-temperature toughness and low-temperature strength.
Product form
Bars , plates , tubes , wires, strips, forgings, castings, machined parts, can be matched with corresponding surface treatment, heat treatment, etc.
Physical properties
• Chemical composition: Ti : balance, Fe ≦ 0.30, C ≦ 0.08, N ≦ 0. 05 , H ≦ 0.015, O ≦ 0.35
• Density ρ at 20 ℃ : 4.5 g/cm³
• Melting point: 1640～1671℃
•20～100℃ linear expansion coefficient α : 8.0/(10 -6 ·K)
• Specific heat capacity at 100℃ c/ [J ( kg ·K) ] : 0.522
•20℃ thermal conductivity λ//[W/(m·K)]: 16.33
•Resistivity ρ/n Ω ·m：470
• Ductility: Very good
• Corrosion resistance: extremely superior, resistant to salt water, acid and alkali corrosion.
• Thermal conductivity: Low, suitable for use in environments requiring low thermal conductivity.
Application Areas
• Aerospace : used to manufacture aircraft structural parts, engine components, etc.
• Chemical equipment : used to manufacture corrosion-resistant equipment such as reactors, heat exchangers, pumps, valves, etc.
• Medical devices : widely used in the production of artificial joints, dental implants, surgical tools, etc.
• Marine engineering : offshore oil platforms, submersibles, submarine cables and other marine facilities.
• Automotive industry : High-performance automotive parts, especially widely used in lightweight design.
• Military field : It is also widely used in military equipment such as tanks, submarines, and missiles.
Price and production standards
The specific price is quoted based on the demand, material specifications, quantity, delivery time, etc. According to different needs, the production can be carried out according to the American ASTM standard or the Chinese GB/T3620.1 standard . Other standards can also be discussed.
