TITANIUM ALLOY
Ti - 0.3Mo - 0.8Ni
ASTM GRADE (UNS NO.)
GRADE 12 (R53400)
Chemical Composition (wt. %)
(Max. values unless
range is shown) 		0.08C; 0.03N; 0.25O; 0.30Fe; 0.2-0.4Mo; 0.6-0.9Ni; 0.015H
TENSILE PROPERTIES
Guar.R.T.
Min.
Typical
R.T.
Typical Elevated Temperature Properties
93°C(200°F)
149°C(300°F)
 204°C(400°F)
Ultimate Strength
MPa (ksi)
483 (70)
565 (82)
483 (70)
424 (61)
359 (52)
Yield Strength,
0.2% offset
MPa (ksi)
345 (50)
448 (65)
414 (60)
365 (53)
303 (44)
Elongation in
51 mm
(2") gage length
(%)
18
23
25
27
30
Reduction in Area-Bar, Billet &
Forging only
(%)
25
OTHER MECHANICAL PROPERTIES
  

Stress to Rupture
in Time Shown

Stress
MPa (ksi)
379 (55)
Time-Hrs. at Temp. (°C)
100,000
Stress & Time to
Produce Elongation
Shown (creep)
Stress
MPa (ksi)
290 (42)
221 (32)
221 (32)
103 (15)
Time-Hrs. at Temp. (°C)
10,000 (25)
1,000 (250)
10,000 (150)
10,000 (315)
Creep
(%)
0.36
1.0
0.05
0.14
Charpy V-Notch
Impact @ R.T.
Joules
(ft-lbs)
16 -27 (12 - 20)
Bend Radius Under 1.78 mm (0.070") thick
2.0 x Thickness
1.78 mm (0.070") and over
2.5 - 3.0 x Thickness
Welded Bend Radius
3.0 x Thickness
Nominal Hardness
88 HRB
PHYSICAL PROPERTIES
Nominal Beta
Transus
°C (°F)
890 (1634)
Coefficient of
Thermal Expansion
10-6/°C
(10-6/°F) 		0-100°C (32 -212°F)
—
0-315°C (32-600°F)
9.6 (5.3)
0-538°C (32-1000°F)
—
0-648°C (32-1200°F)
—
0-816°C (32-1500°F)
—
Density
g/cm3 (lbs/in3)
4.51 (0.163)
Melting
Point,
Approx.
°C (°F)
1660 (3020)
Electrical
Resistivity
@ R.T.
10-6 ohm·cm
(10-6 ohm·in)
52 (21)
Modulus of
Elasticity ­
Tension
GPa (103 ksi)
103 (15)
Modulus of
Elasticity ­
Torsion
GPa (103 ksi)
43 (6.2)
Thermal
Conductivity
W/m·°C (BTU/hr·ft·°F)
19 (11.0)
Specific
Heat
J/Kg·°C (BTU/lb·°F)
544 (0.13)
Weldability
Excellent
Industry Specifications
ASTM -
B265, B337, B348, B381, B861, B862 specs.; AMS 4902