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Grade : | BT22 |
Classification : | Titanium wrought alloy |
Application: | for obtaining highly loaded parts and structures that operate for a long time at temperatures of 350-400 °C. (power parts of the fuselage, wing, stampings, control system parts, fasteners such as eye bolts); structural class α+β |
Foreign analogues: | No data |
GOST 1-19807 - 91
Fe | C | Si | Cr | Mo | V | N | You | Al | Zr | O | H | Impurities |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.5 - 1.5 | up to 0.1 | up to 0.15 | 0.5 - 1.5 | 4 - 5.5 | 4 - 5.5 | up to 0.05 | 79.4 - 86.3 | 4.4 - 5.7 | up to 0.3 | up to 0.18 | up to 0.015 | other 0.3 |
Note: Ti is the basis; Ti percentage is approximate.
Mechanical properties at T=20 o C of BT22 material.
Assortment | Size | For example. | σin | σT | δ5 | ψ | KCU | Thermal processing |
---|---|---|---|---|---|---|---|---|
- | mm | - | MPa | MPa | % | % | kJ/m² | - |
Rod, GOST 26492-85 | 1030 | 6-8 | 14-20 | 200-250 | Annealing | |||
Rod, high quality, GOST 26492-85 | 1080-1280 | 7-10 | 17-30 | 250-300 | Annealing | |||
Rod, high quality, GOST 26492-85 | 1280 | 6-7 | 16-18 | 180-200 | Hardening and aging |
Hardness BT22 after annealing, Rod | HB 10 -1 = 255 - 341 MPa |
T | E 10-5 | α 106 | λ | ρ | C | R 109 |
---|---|---|---|---|---|---|
Hall | MPa | 1/Grad | W/(m deg) | kg/ m3 | J/(kg deg) | Ohm m |
20 | 8.32 | 4620 | 1530 | |||
100 | 8 | 9.21 | ||||
200 | 8.2 | 10.5 | 0.565 | |||
300 | 8.4 | 11.7 | 0.586 | |||
400 | 8.6 | 13.4 | 0.649 | |||
500 | 8.8 | 14.6 | 0.712 | |||
600 | 15.9 |
σin - Tensile strength [MPa]
σT - Yield stress [MPa]
δ5 - Specific elongation at fracture [%]
ψ - Reduction of area [%]
KCU - Impact strength [kJ/m²]
HB - Brinell hardness [MPa]
T - Test temperature [Grade]
E - Young modulus [MPa]
α - Coefficient of linear expansion (20° - T) [1/Grade]
λ - Thermal (heat) condition coefficient [Watt/(m·Grade)]
ρ - Density [kg/m³]
C - Specific heat (range 20° - T) [J/(kg·Grade)]
R - Electrical resistance [Ohm·m]