| O |
Very soft (fully annealed) |
H14 |
½ hard |
| T |
Heat-treated (hardening of aging applied) |
H16 |
¾ hard |
| H |
Strain-hardened (heat treated materials can not see) |
H18 |
Full hard |
| T1 |
Directly shaped and natural aging |
H19 |
Extra hardness |
| T2 |
Annealed |
H2 |
Cold deformation + annealing |
| T3 |
The solution taken, and cold-treated |
H21 |
1/8 hard |
| T4 |
Solution taken, and naturally aged |
H22 |
¼ hard |
| T5 |
Directly shaped and artificial aging |
H24 |
½ hard |
| T6 |
Solution taken, and artificially aged |
H26 |
¾ hard |
| T7 |
Whether the solution, stabilized |
H28 |
Full hard |
| T8 |
The solution taken, and cold-deformed and artificially aged |
H29 |
Extra hardness |
| T9 |
The solution taken, and artificially aged and cold-deformed |
H3 |
Cold deformation + stabilized |
| T10 |
Shaped, artificially aged and cold-deformed |
H32 |
¼ hard and stable, although |
| T42 |
T4 and T6 mechanical properties after thermal fatigue or corrosion |
H34 |
½ hard and stable, although |
| T62 |
resistance in case of change of the thermal process. |
H36 |
¾ hard and stable, although |
| T351 |
Before aging relaxing additional voltage controlled by stretching. |
H38 |
Fully rigid and stable even though |
| T651 |
Before aging relaxing additional voltage controlled by stretching. |
H39 |
If extra hard and stable |
| T851 |
Before aging relaxing additional voltage controlled by stretching. |
H4 |
Cold deformation + cooking |
| H1 |
Only cold deformation |
H42 |
¼ hardness |
| H11 |
1/8 hard |
H44 |
½ strength |
| H111 |
Low-level strain-hardened |
H46 |
¾ hardness |
| H112 |
Uncontrolled strain hardened |
H48 |
Full hard |
| H12 |
¼ hard |
H49 |
Extra hardness |
