TI–2.5CU
| Common Name | |
|---|---|
| Ti–2.5Cu | |
| Ti 230 | |
| UNS | |
| None assigned | |
| General Information | |
| Ti 230 combines the formability and weldability of unalloyed titanium with improved mechanical properties, particularly at elevated temperatures (up to 662°F (350°C)). The alloy may be used in the annealed condition as sheet, forgings and extrusions; it is used both in the airframe and in components such as bypass ducts for gas-turbine engines. Ageing can be used to raise the room temperature tensile properties by ~25% and nearly double the elevated temperature properties (eg creep @ 392°F(200°C)). Such a material is particularly attractive since it can be formed in the soft condition, thus lowering fabrication costs. | |
| Common Specification | |
| Specification | Product Form |
| MSRR 8603 | Sheet (Annealed) |
| MSRR 8602/8605 | Forging stock, forgings |
| TA 58 | Plate |
| TA52, MSRR8606 | Sheet (SHT) |
| ASME SB-348 | Bars and Billets |
| WL 3.7124, TA 53 | Bar |
| Chemistry Requirements | ||||||
|---|---|---|---|---|---|---|
| N | C | H | Fe | O | Cu | Ti |
| 0.03 | 0.08 | 0.01 | 0.20 | 0.20 | 2.0-3.0 | Balance |
% Maximum unless given as a range.
| Minimum Tensile Properties | ||||
|---|---|---|---|---|
| Condition | UTS ksi (Mpa) | >0.2%YS ksi (MPA) | % El. | % RA* |
| As specified (shape) | 88 (610) | 71 (490) | 10 | 25 |
| Typical Tensile Properties | ||||
|---|---|---|---|---|
| Condition | UTS ksi (Mpa) | >0.2%YS ksi (MPA) | % El. | % RA* |
| Sheet ST | 90 (620) | 77 (530) | 24 (on 2″(50mm)) | – |
| Sheet STA | 175-185 (1207-1276) | 96 (660) | 20 (on 2″(50mm)) | – |
| Bar & Rod ST | 91 (630) | 72 (500) | 27 | 45 |
| Bar & Rod STA | 107 (740) | 84 (580) | 22 | 41 |
| Extrusions ST | 91 (630) | 72 (500) | 30 | 40 |
| Extrusions STA | 115 (790) | 97 (670) | 28 | 30 |
Note: Typical properties are not to be utilized as a requirement, but are only listed for guidance. These properties may or may not be attainable in all circumstances.
* %Ra not required by all specifications
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