TITANIUM ALLOY
Ti - 6AI - 6V - 2Sn
ASTM GRADE (UNS NO.)
(R56620)
Chemical Composition (wt. %)
(Max. values unless range is shown) 		0.08C; 0.04N; 0.20O; 5.0-6.0Al; 5.0-6.0V; 1.5-2.5Sn; 0.35-1.0Fe; 0.35-1.0Cu; 0.0125H (billet); 0.015H (bar, sheet, plate)
TENSILE PROPERTIES
Guar.R.T.
Min.*
Typical Elevated Temperature Prop. (Ann.)
204°C(400°F)
315°C(600°F)
427°C(800°F)
Ultimate Strength
MPa (ksi)
1034 (150)
1070 (155)
1000 (145)
930 (135)
Yield Strength,
0.2% offset
MPa (ksi)
965 (140)
930 (135)
827 (120)
793 (115)
Elongation in 51 mm
(2") gage length
(%)
10L, 8T
Reduction in Area -
Bar, Billet & Forging only
(%)
20L, 15T
OTHER MECHANICAL PROPERTIES
*For sections <51mm, Annealed Condition

Stress to Rupture
in Time Shown

Stress
MPa (ksi)
 
Time-Hrs. at Temp. (°C)  
Stress & Time to
Produce Elongation
Shown (creep)
Stress
MPa (ksi)
 
655 (95)
276 (40)
124 (18)
Time-Hrs. at Temp. (°C)  
100 (315)
100 (370)
100 (427)
Creep
(%)
 
0.2
0.2
0.2
Charpy V-Notch
Impact @ R.T.
Joules
(ft-lbs)
16 - 19 (12 - 14)
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
—
Nominal Hardness
38 HRC (Ann. condition)
PHYSICAL PROPERTIES
  
Nominal Beta
Transus
°C (°F)
946 (1735)
Coefficient of
Thermal Expansion
10-6/°C
(10-6/°F) 		0-100°C (32 -212°F)

9.0 (5.0)
0-315°C (32-600°F)
9.3 (5.2)
0-538°C (32-1000°F)
9.5 (5.3)
0-648°C (32-1200°F)
10.7 (6.0)
0-816°C (32-1500°F)
10.9 (6.1)
Density
g/cm3 (lbs/in3)
4.54 (0.164)
Melting
Point,
Approx.
°C (°F)
1650 (3000) - 1704 (3100)
Electrical
Resistivity
@ R.T.
10-6 ohm·cm
(10-6 ohm·in)
157 (398)
Modulus of
Elasticity ­
Tension
GPa (103 ksi)
114 (16.5)
Modulus of
Elasticity ­
Torsion
GPa (103 ksi)
—
Thermal
Conductivity
W/m·°C (BTU/hr·ft·°F)
5.5 (3.2)
Specific
Heat
J/Kg·°C (BTU/lb·°F)
635 (0.155)
Weldability
Limited
Industry Specifications
AMS - 4918, 4936, 4971, 4978 and 4979;
MIL-T - 9046 and 9047

* See Ti-6-6-2 heat treatment information????????