| Customization: | Available |
|---|---|
| Type: | Titanium Sheets |
| Application: | Medical |
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Commercially Pure Titanium Grade 3 Alloy offers slightly higher mechanical properties than Grade 2, while displaying similar ductility and formability. Generally used where corrosion resistance is a major design factor in chemical production components, marine and airframe applications. It can be used for parts requiring strength up to 400 ° F and oxidation resistance to 600 ° F.
Grade 3 Alloy Unalloyed Ti ("Pure") 65A alloy is a general purpose alloy that is non-magnetic, and has excellent corrosion resistance in highly oxidizing to mildly reducing environments and excellent strength to weight ratio. It is a slightly stronger version of grade 2 titanium alloy. It also has good impact properties at low temperatures.
The chemical composition of grade 3 Alloy Unalloyed Ti ("Pure") 65A alloy is outlined in the following table.
| Element | Content (%) |
| Titanium, Ti | ≥ 98.8 |
| Iron, Fe | ≤ 0.30 |
| Oxygen, O | ≤ 0.35 |
| Carbon, C | ≤ 0.080 |
| Nitrogen, N | ≤ 0.050 |
| Hydrogen, H | ≤ 0.015 |
| Grade | UNS | DIN | EN | ASTM | AMS |
| Titanium Grade 3 |
UNS R50550 |
ASTM B337
ASTM B338
ASTM B381
ASTM F67
|
AMS 4900
|
The physical properties of grade 3 Alloy Unalloyed Ti ("Pure") 65A alloy are tabulated below.
| Properties | Metric | Imperial |
| Density | 4.51 g/cm3 | 0.163 lb/in3 |
| Melting point | 1680°C | 3056°F |
The following table shows mechanical properties of grade 3 Unalloyed Ti ("Pure") 65A alloy.
| Properties | Metric | Imperial |
| Tensile strength | 585 MPa | 84800 psi |
| Yield strength | 345 MPa | 50000 psi |
| Poisson's ratio | 0.34-0.40 | 0.34-0.40 |
| Elastic modulus | 105 - 120 GPa | 15200 - 17400 ksi |
| Elongation at break | 25% | 25% |
| Hardness (HV) | 180-220 | 180-220 |
The thermal properties of grade 3 Unalloyed Ti ("Pure") 65A Alloy are tabulated below.
| Properties | Metric | Imperial |
| Thermal expansion co-efficient (@0.000-100°C/32-212°F) | 8.60 µm/m°C | 4.78 µin/in°F |
| Thermal conductivity | 21.97 W/mK | 152.5 BTU in/hr.ft².°F |
Grade 3 Unalloyed Ti ("Pure") 65A alloy is hard to machine but can be successfully done using slow speeds, high coolant flow, and high feed rates. Tooling should be performed using tungsten carbide designations C1-C4 or cobalt type high speed tools.
Grade 3 Unalloyed Ti ("Pure") 65A alloy can be hot or cold formed using power brake, hydropress, stretch or drop hammer methods.
Weldability of grade 3 Unalloyed Ti ("Pure") 65A alloy is rated as excellent.
Annealing of this material can be performed by heating to 704°C (1299°F), and then held for 2 h, which should be followed by air cooling. In case intermediate stress relieving is required, the material has to be heated to 482-538°C (900-1000°F) for 45 min.
Rough forging can be performed at 907°C (1165°F) and completed at 843°C (1550 °F).
Hot working enhances the overall ductility of the material.
Cold working features of this material is same as that of a moderately tempered austenitic stainless steel. Post-work annealing is recommended to re-attain favorable performance properties.
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