TITANIUM ALLOY
Ti - 8AI - 1Mo - 1V
ASTM GRADE (UNS NO.)
(R54810)
Chemical Composition (wt. %)
(Max. values unless range is shown) 		0.08C; 0.05N; 0.12O, 7.5-8.5Al; 0.75-1.75Mo; 0.75-1.75V; 0.0125H (billet); 0.0125H (bar); 0.015H (sheet)
TENSILE PROPERTIES
Guar.R.T.
Min. Dup.Ann.
Typical Elevated Temperature Properties
316°C(600°F)
427°C(800°F)
538°C(1000°F)
Ultimate Strength
MPa (ksi)
931 (135)
745 (108)
100 (690)
595 (86)
Yield Strength,
0.2% offset
MPa (ksi)
827 (120)
550 (80)
520 (75)
450 (65)
Elongation in 51 mm
(2") gage length
(%)
10
20
20
28
Reduction in Area -
Bar, Billet & Forging only
(%)
52
55
70
OTHER MECHANICAL PROPERTIES
 

Stress to Rupture
in Time Shown

Stress
MPa (ksi)
 
396 (57.5)
Time-Hrs. at Temp. (°C)  
8
Stress & Time to
Produce Elongation
Shown (creep)
Stress
MPa (ksi)
 
683 (99)
414 (60)
124 (18)
Time-Hrs. at Temp. (°C)  
100
100
100
Creep
(%)
 
0.2
0.2
0.2
Charpy V-Notch
Impact @ R.T.
Joules
(ft-lbs)
20 - 34 (15-25)
Bend Radius Under 1.78 mm (0.070") thick
4.0 x Thickness
1.78 mm (0.070") and over
4.5 x Thickness
Welded Bend Radius
6.0 - 10.0 x Thickness
Nominal Hardness
36 HRC
PHYSICAL PROPERTIES
  
Nominal Beta
Transus
°C (°F)
1038 (1900)
Coefficient of
Thermal Expansion
10-6/°C
(10-6/°F) 		0-100°C (32 -212°F)

8.5 (4.7)

0-315°C (32-600°F)
9.0 (5.0)
0-538°C (32-1000°F)
10.1 (5.6)
0-648°C (32-1200°F)
(10.3) (5.7)
0-816°C (32-1500°F)
—
Density
g/cm3 (lbs/in3)
4.37 (0.158)
Melting
Point,
Approx.
°C (°F)
1538 (2800)
Electrical
Resistivity
@ R.T.
10-6 ohm·cm
(10-6 ohm·in)
197 (500)
Modulus of
Elasticity ­
Tension
GPa (103 ksi)
128 (18.5)
Modulus of
Elasticity ­
Torsion
GPa (103 ksi)
46 (6.7)
Thermal
Conductivity
W/m·°C (BTU/hr·ft·°F)
6 (3.5)
Specific
Heat
J/Kg·°C (BTU/lb·°F)
502 (0.120)
Weldability
Fair
Industry Specifications
AMS - 4915, 4916, 4927, 4973;
MIL-T - 9046 and 9047

* See Ti-8-1-1 heat treatment information????????

Note: STA in thin sections only. Not widely used.