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Physical Properties: (typical)
| Density |
.163 lb/in3 |
| Melting Point |
3000 F |
| Thermal Conductivity |
9.5 Btu/hr/ft2/F/ft |
| Expansion Coefficient |
4.8 x 106 in/in/F |
| Specific Heat |
.125 Btu/lb F |
Engineering Properties:
Titanium and its alloys are at least as strong in compression as in tension; they are 60% as strong in shear as in tension. The hardness of CP ranges from less than 120 Bhn to 300 Bhn. The tensile modulus of elasticity is about 14.9 x 106 psi and the shear modulus is 6.5 x 106 psi. The impact resistance and fracture toughness of titanium and its alloys are inversely affected by increased strength levels and interstitial content. In fatigue situations, the normal endurance limit of these materials is about .5 to .65 x the ultimate tensile strength for unnotched elements. Corners, notches, holes, rough surfaces and other discontinuities reduce fatigue resistance considerably.
Thermal and Electrical Properties:
An allotropic change from HCP to BCC and the pickup of interstitial gases limit the high temperature applications of titanium. For short-time service, such as fire walls, titanium is useful to 2000 F, but for long-time service, the upper limit for titanium in hot air is about 1000 F. The thermal conductivity of titanium is in the range of 9.5 Btu/ht/ft2/F/ft, which is similar to that of austenitic stainless steels. The electrical resistivity of titanium is 48-60 microhm-cm at room temperature and increasesj with temperature reaching 135-145 microhm-cm between 1000 and 1400 F.
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Titanium - Mechanical Properties |
| Alloy |
Specification |
UTS Minimum |
.2% YS Minimum |
% Elongation Minimum |
% RA Minimum |
| CP-1 |
ASTM B348 Grade 1 |
35000 |
25000 |
24 |
30 |
| CP-2 |
ASTM B348 Grade 2 |
50000 |
40000 |
20 |
30 |
| CP-3 |
ASTM B348 Grade 3 |
65000 |
55000 |
18 |
30 |
| CP-4 |
ASTM B348 Grade 4 |
80000 |
70000 |
15 |
25 |
| Ti 6Al-4V |
ASTM B348 Grade 5 |
130000 |
120000 |
10 |
25 |
| Ti-Pd |
ASTM B348 Grade 7 |
50000 |
40000 |
20 |
30 |
| TiCode 12 |
ASTM B348 Grade 12 |
70000 |
50000 |
18 |
25 |
Ti 6Al-4V
ELI |
ASTM B348 Grade 23 |
120000 |
110000 |
10 |
25 |
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