Ti-31 Titanium Alloy Tube

Ti-31 titanium alloy is a multi-component near-α titanium alloy with the chemical composition Ti-Al-Mo-Zr-Ni. It is a new high-temperature corrosion-resistant alloy independently developed in my country. Compared with other titanium alloys of the same strength, it has better plasticity and toughness. , medium temperature thermal strength, high temperature durability, corrosion resistance and weldability are significantly improved.

Product name: Ti-31 titanium alloy tube
Implementation standards: American Standard
made in China
Chemical composition: Ti-Al-Mo-Zr-Ni
Process flow: pipe blank repair → cold rolling → oil removal → pickling → annealing → straightening → repair → external polishing → internal sandblasting → flow pickling → finished product cold rolling → oil removal → pickling → annealing → straightening → ultrasonic →Inspection→Packaging

                                                                      The main mechanical properties of Ti31 alloy

Ti-31 titanium alloy pipe material has low density, high strength and high specific strength; the density of titanium is: 4.51g/cm3, which is 57% of steel, only a little more than half of steel, and less than twice that of aluminum. The strength ratio Aluminum is three times larger. The specific strength of titanium alloy is the largest among commonly used industrial alloys. The specific strength of titanium alloy is 3.5 times that of stainless steel, 1.3 times that of aluminum alloy, and 1.7 times that of magnesium alloy. Therefore, it is an essential structural material in the aerospace industry.

                                                            Comparison of density and specific strength of titanium with other metals

Ti-31 titanium alloy pipeExcellent corrosion resistance:The purity of titanium depends on the existence of an oxide film. Its corrosion resistance in oxidizing media is much better than that in reducing media, and high-rate corrosion can occur in reducing media. Titanium will not be corroded in some corrosive media, such as seawater, wet chlorine, nitrite and hypochlorous acid solutions, nitric acid, chromic acid, metal chlorides and organic acids, etc. However, in media where titanium reacts to produce hydrogen (such as hydrochloric acid and sulfuric acid), titanium usually has a greater corrosion rate. But if a small amount of oxidant is added to the acid, titanium will form a passive film. Titanium is corrosion-resistant. Therefore, titanium is corrosion-resistant in sulfuric acid-nitric acid or hydrochloric acid-nitric acid mixtures, and even in hydrochloric acid containing free chlorine. 

Good heat resistance:Titanium alloy maintains good mechanical properties at around 500°C. When the aircraft speed reaches 2.7 times the speed of sound, the surface temperature of the aircraft structure reaches 230°C. Aluminum alloys and magnesium alloys can no longer be used, while titanium alloys can meet the requirements. Titanium has good heat resistance and is suitable for turbine disks and blades of aircraft engine compressors and the skin of the rear fuselage of aircraft.

Good low temperature performance:The strength of some titanium alloys (such as Ti-5Al-2.5SnELI) increases as the temperature decreases, but the plasticity does not decrease much. It has good ductility and toughness at low temperatures and is suitable for use at ultra-low temperatures.

Non-magnetic:Baoding Ti-31 Titanium Alloy Wire Anti-oxidation titanium alloy is non-magnetic. It is used in submarine shells and will not cause mine explosions.

Small thermal conductivity

              Comparison of thermal conductivity between titanium and other metals

Tensile strength is close to yield strength

                                Comparison of tensile strength and yield strength between titanium and other metals

Ti-31 titanium alloy pipes can be used in heat exchangers, condensers and pipeline accessories, etc., and can also be widely used in aviation, petroleum industry and marine industry.

 

 

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