BT20 Titanium plate for Aerospace
Dimension of BT20 titanium plate:
Cold Rolling: Tk0.5-Tk6mm,Wide2000mm,length
Hot Rolling: Tk0.8-80Tkmm,Wide2000mm,length
Product Introduction
Cold Rolling:h Tk0.5-Tk6mm,Wide2000mm,length roll
Hot h Rolling:Tk0.8-80Tkmm,Wide2000mm,length 6000mm
Process of BT20 Titanium alloy plate: cold rolled or hot rolled
BT20 titanium plate for aerospace main nominal chemical composition is Ti-6.5Al-1Mo-1V-2Zr, which is a near alpha alloy developed by the former Soviet Aeronautical Materials Research Institute in 1964, it has medium room temperature and high temperature strength, good thermal stability and welding performance, widely used in military and aerospace field.
It is a general-purpose alloy, which is mainly used to produce thick and thin plates, and can also be used to produce forgings, die forgings, bars and profiles.
Smelting method: Electrode pressing + three vacuum consumption
BT20 Titanium alloy chemical and mechanical properties
Features | The alloy has good overall performance and thermal stability, good welding performance, and can be used for a long time below 500°C. | Application | Mainly used for main structural parts such as main bearing parts of the rear fuselage, engine casings, special-shaped castings, etc. | |||||||||||||
Chemical Composition wt% | ||||||||||||||||
Al | Mo | V | Zr | Si | Fe | C | N | H | O | |||||||
5.5～7.1 | 0.5～2.0 | 0.8～2.5 | 1.5～2.5 | ≤0.15 | ≤0.25 | ≤0.08 | ≤0.05 | ≤0.015 | ≤0.15 | |||||||
Mechanical properties (Φ250 forging bar transverse), Heat treatment system: 850℃x2h, air cooling. | ||||||||||||||||
Room temperature（20℃） | σb MPa | σ0.2 MPa | A % | Z % | Ak J | HBd | ||||||||||
947 | 885 | 15.0 | 51.0 | 33.3 | — | |||||||||||
976 | 861 | 15.5 | 39.0 | 37.5 | — | |||||||||||
High temperature（500℃） | 734 | — | 19.5 | 56 | σ（470 ） MPa ³50h | ok | ||||||||||
696 | — | 27 | 64 | ok | ||||||||||||
500℃´100h Hot Exposed | 1077 | 949 | 11.6 | 35.5 | — | — | ||||||||||
1060 | 946 | 14.0 | 28.5 | — | — | |||||||||||
Characteristic
BT20 titanium plate is a near α type high-temperature titanium alloy, the aluminum equivalent is increased by adding various alloying elements to improve the high temperature performance. Compared with the traditional α+β type titanium alloy, the near α type high-temperature Ti-6.5Al-1Mo-1V-2Zr titanium plate still has good creep resistance, fatigue resistance, oxidation resistance and thermal stability at high temperatures. Due to its high strength and light weight, It can be used in aero-engine parts to replace some nickel-based superalloys with lower specific strength, which can further improve the thrust-to-weight ratio of the engine. Because of its good process plasticity close to α+β titanium alloy and the same good welding performance as α type titanium alloy, it can be used to make engine cases and other aircraft components that work at 300-500°C.
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