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China GJB TA18 航空用钛合金管材规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: TA18 / TA18
Category Grade Standard Region/Area Standard Content
Metals TA18 GJB 3423A China 航空用钛合金管材规范

Chemical composition(mass fraction)(wt.%) of the TA18

Element Min Max Similar
Ti - - -
Al 2.5000 3.5000 -
V 2.0000 3.0000 -
C - 0.0500 -
Fe - 0.3000 -
Si - 0.1000 -
Zr - 0.1000 -
O - 0.1200 -
N - 0.0200 -
H - 0.0150 -
Others total - 0.1000 -
Total Others - 0.3000 -

Mechanical Properties of steel grade TA18

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)
561 (≥) 312 (≥) 44 14 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade TA18

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
31 - -     0.21 -  
651 759 - 33.3 334   -  
129 - 31 42.2   222 311

Heat Treatment of steel grade TA18

Heat treated : 1379°C - 1283°C

Technological Curves of steel grade TA18

Cross Reference Table (Equivalent Grade) of TA18

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