BT22 Titanium alloy Ti-5Al-5V-5Mo-1Cr-1Fe
Titanium rod: Dimension 5mm-200mmx L
Titanium plate:dimension thickness12mm-60mm,wide1000mm-2000mm,length2000mm-6000mm
Titanium forgings: customized
Product Introduction
Introduction
BT22 also be called TC18 in china or Ti-5Al-4.75Mo-4.75V-1Cr-1Fe
BT22 high-strength near β-type titanium alloy, its nominal composition Ti-5Al-5Mo-5V-1Cr-1Fe, its chemical composition range is: 4.5%-5.9% Al, 4.0%-5.0% Mo, 4.0%-5.5% V, 0.5%-2.0%Cr, 0.5%-1.5%Fe, the alloy has a high level of strength in the annealed state, which can reach 1080Mpa, with strengthening treatment, the strength can also reach 1300Mpa, which is annealed in the existing titanium alloy The alloy with the highest strength and excellent hardenability. The thickness of the cross-section hardenability can reach 250mm. Since the thickness of the cross-section is not limited by the hardenability, ordinary low-cost die forging (on a die forging hammer) and hot die forging can be used Various processes, such as isothermal die forging, produce near-net shape forgings, so it is suitable for manufacturing large-scale aircraft bearing components.
It has the characteristics of high strength, high toughness, good plasticity and excellent welding performance. The alloy can be used to manufacture the fasteners of fuselage, wing force parts and operating system that work at 350-400℃ for a long time. It can also be used to manufacture fan discs and blades of engines whose operating temperature is not higher than 350℃. Bt22 alloy replaces high-strength steel in aircraft structures, which can reduce weight by 15%-20%.
BT22/TC18 titanium alloy specification
Titanium rod: Dimension 5mm-200mmx L
Titanium plate:dimension thickness12mm-60mm,wide1000mm-2000mm,length2000mm-6000mm
Titanium forgings: as requests.
Smelting method: Electrode pressing + three vacuum consumption
Chemical Composition wt%
Al | Mo | V | Cr | Fe | Si | Zr | C | N | H | O |
4.4～5.7.1 | 4.0～5.5 | 4.0～5.5 | 0.5～1.5 | 0.5～1.5 | ≤0.15 | ≤0.30 | ≤0.08 | ≤0.05 | ≤0.015 | ≤0.18 |
Mechanical properties (transverse forging)
Room temperature(20℃) | σb MPa | σ0.2 MPa | A % | Z % | Ak J | HBd | ||||
1218 | 1188 | 12 | 42 | - | 3.17 | |||||
1193 | 1166 | 13 | 36 | - | 3.14 | |||||
It has the advantages of high strength, high plasticity, good hardenability and weldability. The annealed structure has roughly the same number of a phases and β phases. It is the highest-strength titanium alloy in the annealed state. The TC18 titanium alloy can also be welded in various ways method for welding, after annealing, it has good welding performance, and the maximum working temperature is 400℃.
BT22 titanium alloy is mainly used for large load-bearing components and parts of aircraft body and landing gear, and also used to manufacture engine fan discs and blades whose operating temperature does not exceed 350 ℃, and also used to manufacture important bearing such as forks and torque arms on landing gear Force member. It is also used in rockets, artillery, mortars, shells, etc.
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