TITANIUM ALLOY
Ti - 6AI - 2Sn - 4Zr - 2Mo - 0.1Si
ASTM GRADE (UNS NO.)
(R54620)
Chemical Composition (wt. %)
(Max. values unless range is shown) 		0.08C; 0.05N; 0.12O; .25Fe; 5.5-6.5Al; 1.75-2.25Sn; 3.5-4.5Zr; 1.75-2.25Mo; 0.10Si max.; 0.010H (billet); 0.0125H (bar)
TENSILE PROPERTIES
Guar.R.T.
Min.
Typical Elevated Temperature Properties
315°C(600°F)
427°C(800°F)
538°C(1000°F)
Ultimate Strength
MPa (ksi)
996 (130)
655 (95)
588 (58)
517 (75)
Yield Strength,
0.2% offset
MPa (ksi)
827 (120)
517 (75)
483 (70)
414 (60)
Elongation in 51 mm
(2") gage length
(%)
10
15
20
25
Reduction in Area -
Bar, Billet & Forging only
(%)
25
40
55
65
OTHER MECHANICAL PROPERTIES
 

Stress to Rupture
in Time Shown

Stress
MPa (ksi)
 
345 (50)
Time-Hrs. at Temp. (°C)  
50
Stress & Time to
Produce Elongation
Shown (creep)
Stress
MPa (ksi)
 
400 (58)
83 (12)
Time-Hrs. at Temp. (°C)  
1000
1000
Creep
(%)
 
0.1
0.1
Charpy V-Notch
Impact @ R.T.
Joules
(ft-lbs)
Bend Radius Under 1.78 mm (0.070") thick
4.5 x Thickness
1.78 mm (0.070") and over

5.0 x Thickness
Welded Bend Radius
—
Nominal Hardness
34 HRC
PHYSICAL PROPERTIES
  
Nominal Beta
Transus
°C (°F)
999 (1830)
Coefficient of
Thermal Expansion
10-6/°C
(10-6/°F) 		0-100°C (32 -212°F)

7.7 (4.3)

0-315°C (32-600°F)
8.1 (4.5)
0-538°C (32-1000°F)
8.1 (4.5)
0-648°C (32-1200°F)
—
0-816°C (32-1500°F)
—
Density
g/cm3 (lbs/in3)
4.54 (0.164)
Melting
Point,
Approx.
°C (°F)
1704 (3100)
Electrical
Resistivity
@ R.T.
10-6 ohm·cm
(10-6 ohm·in)
185 (470)
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)
7.7 (4.3)
Specific
Heat
J/Kg·°C (BTU/lb·°F)
460 (0.11)
Weldability
Fair
Industry Specifications
AMS - 4975, 4976, 4919;
MIL-T - 9046 and 9047

* See Ti-6-2-4-2-S heat treatment information????????