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China GJB TA7 航空用钛及钛合金自由锻件和模锻件规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TA7 / TA7
Category Grade Standard Region/Area Standard Content
Metals TA7 GJB 2744 China 航空用钛及钛合金自由锻件和模锻件规范

Chemical composition(mass fraction)(wt.%) of the TA7

Element Min Max Similar
Ti - - -
Al 4.0000 6.0000 -
Sn 2.0000 3.0000 -
Fe - 0.5000 -
C - 0.1000 -
N - 0.0500 -
H - 0.0150 -
O - 0.2000 -
Others total - 0.1000 -
Total Others - 0.4000 -

Mechanical Properties of steel grade TA7

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
484 (≥) 211 (≥) 34 42 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade TA7

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
21 - -     0.24 -  
716 498 - 34.3 242   -  
293 - 34 24.2   144 412

Heat Treatment of steel grade TA7

Heat treated : 1118°C - 1265°C

Technological Curves of steel grade TA7

Cross Reference Table (Equivalent Grade) of TA7

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