| H111 |
Annealed and slightly strain-hardened (less than H11) during subsequent operations such as stretching or levelling. |
| H112 |
Slightly strain-hardened from working at an elevated temperature from a limited amount of cold work (mechanical property limits specified). |
| H114 |
Applies to embossed or patterned sheet or strip, fabricated from the corresponding Hxx temper. |
| H12 |
Strain-hardened - 1/4 hard |
| H14 |
Strain-hardened - 1/2 hard. |
| H16 |
Strain-hardened - 3/4 hard. |
| H18 |
Strain-hardened - 4/4 hard (fully hardened). |
| H19 |
Strain-hardened - extra hard. |
| H22 |
Strain-hardened and partially annealed - 1/4 hard. |
| H24 |
Strain-hardened and partially annealed - 1/2 hard. |
| H244 |
Applies to embossed or patterned sheet or strip, fabricated from the corresponding Hxx temper. |
| H32 |
Strain-hardened and stabilized - 1/4 hard. |
| H34 |
Strain-hardened and stabilized - 1/2 hard. |
| H42 |
Strain-hardened and painted or lacquered - 1/4 hard. |
| H44 |
Strain-hardened and painted or lacquered - 1/2 hard. |
| O |
Annealed - products achieving the required annealed properties after hot forming processes may be designated as O temper. |
| O3 |
Homogenized |
| T1 |
Cooled from an elevated temperature shaping process and naturally aged. |
| T3 |
Solution heat-treated, cold worked and naturally aged. |
| T351 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 0.5% to 3% for sheet, 1.5% to 3% for plate, 1% to 3% for rolled or cold-finished rod and bar, 1% to 5% for hand or ring forging and rolled ring) and naturally aged. The products receive no further straightening after |
| T3510 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 1% to 3% for extruded rod, bar, shapes and tube, 0.5% to 3% for drawn tube) and naturally aged. The products receive no further straightening after stretching. |
| T4 |
Solution heat-treated and naturally aged. |
| T451 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 0.5% to 3% for sheet, 1.5% to 3% for plate, 1% to 3% for rolled or cold-finished rod and bar, 1% to 5% for hand or ring forging and rolled ring) and naturally aged. The products receive no further straightening after stretching. |
| T4511 |
Same as T4510 except that minor straightening is allowed after stretching to comply with standard tolerances. |
| T5 |
Cooled from an elavated temperature shaping process and then artificially aged. |
| T6 |
Solution heat-treated and then artificially aged. |
| T651 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 0.5% to 3% for sheet, 1.5% to 3% for plate, 1% to 3% for rolled or cold-finished rod and bar, 1% to 5% for hand or ring forging and rolled ring) and then artificially aged. The products receive no further straightening after stretching. |
| T6510 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 1% to 3% for extruded rod, bar, shapes and tube, 0.5% to 3% for drawn tube) and then artificially overaged in order to achieve a good exfoliation corrosion resistance. The products receive no further straightening after stretching. |
| T6511 |
Same as T6510 except that minor straightening is allowed after stretching to comply with standard tolerances. |
| T66 |
Solution heat-treated and then artificially aged - mechanical property level higher than T6 achieved through special control of the process (6000 series alloys). |
| T7 |
Solution heat-treated and then artificially overaged. |
| T73 |
Solution heat-treated and then artificially overaged in order to achieve the best stress corrosion resistance. |
| T7351 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 0.5% to 3% for sheet, 1.5% to 3% for plate, 1% to 3% for rolled or cold-finished rod and bar, 1% to 5% for hand or ring forging and rolled ring) and then artificially overaged in order to achieve the best stress corrosion resistance. The products receive no further straightening after stretching. |
| T7451 |
Solution heat-treated, stress-relieved by controlled stretching (permanent set 0.5% to 3% for sheet, 1.5% to 3% for plate, 1% to 3% for rolled or cold-finished rod and bar, 1% to 5% for hand or ring forging and rolled ring) and then artificially overaged (between T73 and T76). The products receive no further straightening after stretching. |
| T8 |
Solution heat-treated, cold worked and then artificially aged. |
| T9 |
Solution heat-treated, artificially aged and then cold worked. |
