CAPALEX will be closing for the Chrismas Holidays 3:30pm Friday 20th December & our Sales Office will be reopening 9:00am 2nd January 2025.
Merry Christmas and a Happy New Year from the CAPALEX TEAM!
Our 5 metre heat treatment facility, stretch and de-twist machine enables Capalex to supply material to the most demanding aerospace specifications.
If at all unsure, our quality department can advise on which temper would be best for your end use, during your initial enquiry.
| 'T' | Heat treated (ie. For age hardening alloys) the ‘T’ will always be followed by one or more digits. |
| O | Annealed. |
| F | As fabricated. |
| T1 | Cooled from an elevated temperature shaping process and naturally aged. |
| T2 | Cooled from an elevated temperature shaping process, cold worked and naturally aged. |
| T3 | Solution heat-treated, cold worked and naturally aged. |
| T4 | Solution treated and naturally aged. |
| T5 | Cooled from an elevated temperature shaping process and artificially aged. |
| T6 | Solution heat-treated then artificially aged. |
| T7 | Solution heat-treated and then artificially aged. |
| T8 | Solution heat-treated, cold worked and artificially aged. |
| T9 | Solution heat-treated artificially aged and cold worked. |
| One or more digits may be added to T1 to T9 to indicate further variations for tempers. | |
| T351 | Solution heat-treated, stress relieved by stretching a controlled amount. The aluminium receives no further straightening after stretching. Applies to plate, rolled or cold finished rod and bar, to die or ring forgings and to rolled rings. |
| T3510 | Solution heat-treated by stretching a controlled amount and naturally aged. The aluminium receives no further straightening after stretching. Applies to extruded rod, bar, shapes and tubing and to drawn tubing. |
| T3511 | As T3510 but also refers to products that may receive minor straightening after stretching to comply with standard tolerance. |
| T352 | Applies to products that are stress –relieved by compressing after solution heat treatment or after cooling from a hot – working process to produce a permanent set of 1 to 5 %. |
| T651 | Solution heat-treated, stress relieved by stretching a controlled amount and then artificially aged. The aluminium receives no further straightening after stretching. |
| T6510 | Solution heat-treated, stress relieved by stretching a controlled amount and then artificially aged. The aluminium receives no further straightening after stretching. |
| T6511 | As T6510 except that minor straightening is allowed after stretching to comply with standard tolerances. |
| T73 | Solution heat-treated and then artificially overaged in order to achieve the best stress corrosion resistance. |
| T732 | Solution heat-treated and then artificially overaged in order to achieve the best stress corrosion resistance. |
| T73511 | Solution heat-treated, stress relieved, then stabilized by artificial aging before stretching and straightened. The degree of aging is chosen so as to maximize stress corrosion resistance. This temper is closely related to T73510, which does not permit such straightening. |
| T7651 | Solution heat-treated, stress relieved by stretching a controlled amount and then artificially over aged in order to achieve a good exfoliation corrosion resistance. The aluminium receives no further straightening after stretching. |
| T76510 | Solution heat-treated, stress relieved by stretching a controlled amount and then artificially over aged in order to achieve a good exfoliation corrosion resistance.The aluminium receives no further straightening after stretching. |
| T76511 | As T76510 except than minor straightening is allowed after stretching to comply with standard tolerances. |
Capital Aluminium Extrusions Limited
