TITANIUM ALLOY
Ti - 6AI - 2Sn - 2Zr - 2Mo - 2Cr - 0.15Si
ASTM GRADE (UNS NO.)
(UNASSIGNED)
Chemical Composition (wt. %)
(Max. values unless range is shown) 		0.05C; 0.03N; 0.25Fe; 0.14O; 5.25-6.25Al; 1.75-2.25Sn; 1.75-2.25Zr; 1.75-2.25Mo; 1.75-2.25Cr; 0.12-0.20Si; 0.0125H
TENSILE PROPERTIES
Typ.R.T.
Prop. (STA)
Typical Elevated Temperature Prop.
204°C(400°F)
315°C(600°F)
427°C(800°F)
Ultimate Strength
MPa (ksi)
1172 (170)
100 (145)
965 (140)
896 (130)
Yield Strength,
0.2% offset
MPa (ksi)
1103 (160)
807 (117)
738 (107)
690 (100)
Elongation in 51 mm
(2") gage length
(%)
12
19
20
21
Reduction in Area -
Bar, Billet & Forging only
(%)
20
33
35
40
OTHER MECHANICAL PROPERTIES
 

Stress to Rupture
in Time Shown

Stress
MPa (ksi)
 
979 (142)
910 (132)
841 (122)
Time-Hrs. at Temp. (°C)  
100 (204)
100 (315)
100 (427)
Stress & Time to
Produce Elongation
Shown (creep)
Stress
MPa (ksi)
 
841 (122)
827 (120)
572 (83)
Time-Hrs. at Temp. (°C)  
100 (204)
100 (315)
100 (427)
Creep
(%)
 
0.2
0.2
0.2
Charpy V-Notch
Impact @ R.T.
Joules
(ft-lbs)
16 (12)
Bend Radius Under 1.78 mm (0.070") thick
4.5
1.78 mm (0.070") and over

5.0
Welded Bend Radius
Nominal Hardness
PHYSICAL PROPERTIES
  
Nominal Beta
Transus
°C (°F)
960 (1760)
Coefficient of
Thermal Expansion
10-6/°C
(10-6/°F) 		0-100°C (32 -212°F)

—
0-315°C (32-600°F)
9.2 (5.1)
0-538°C (32-1000°F)
—
0-648°C (32-1200°F)
—
0-816°C (32-1500°F)
—
Density
g/cm3 (lbs/in3)
4.65 (0.164)
Melting
Point,
Approx.
°C (°F)
N/A
Electrical
Resistivity
@ R.T.
10-6 ohm·cm
(10-6 ohm·in)
N/A
Modulus of
Elasticity ­
Tension
GPa (103 ksi)
117 (17.0) STA
Modulus of
Elasticity ­
Torsion
GPa (103 ksi)
46 (6.7)
Thermal
Conductivity
W/m·°C (BTU/hr·ft·°F)
N/A
Specific
Heat
J/Kg·°C (BTU/lb·°F)
N/A
Weldability
Limited
Industry Specifications
AMS - 4898