Since the discovery of the element titanium in 1790, mankind has carried out a hundred years of arduous exploration in order to obtain excellent performance. 1910, mankind made titanium metal for the first time, but the application of titanium alloys was a difficult road, and finally realized industrial production in 1951, 40 years later.
Gr9 titanium alloy has high strength, corrosion resistance, high temperature resistance, fatigue resistance and other characteristics. The same size of titanium alloy weight only 60% of steel, but stronger than alloy steel.
Widely used in aircraft structural components and heat-resistant parts, titanium alloys are one of the main structural materials for modern airplanes and engines and are known as space metals.
Titanium alloy hardness, also used in aircraft aluminum alloy material processing is simple: processing 1 m titanium alloy material time can be processed 25 m aluminum alloy material, saving tools, but aluminum alloy strength is difficult to meet the requirements of the titanium alloy processing is difficult, but required. In addition, titanium alloy rebound serious, affecting the accuracy of parts processing, especially thin-walled and complex shape of the parts, processing is more difficult.
Chemical Composition
The chemical composition of grade 9 Ti 3Al 2.5V alloy is outlined in the following table.
| Element | Content (%) |
|---|---|
| Titanium, Ti | 92.755 - 95.5 |
| Aluminum, Al | 2.5 - 3.5 |
| Vanadium, V | 2-3 |
| Iron, Fe | ≤ 0.20 |
| Oxygen, O | ≤ 0.15 |
| Carbon, C | ≤ 0.050 |
| Nitrogen, N | ≤ 0.030 |
| Hydrogen, H | ≤ 0.015 |
| Other, each | ≤ 0.050 |
| Other, total | ≤ 0.30 |
