| Temper 硬度 |
設計記號 | rockwell目標之硬度範圍 30T | 說明 Characteristic | 典型用途 |
T - 1 | 46 - 52 | Soft for drawing | Drawing requirements, drawn and ironed cans, nozzles spouts, closures |
| T - 2 | 50 - 56 | Moderate drawing where some stiffness is required | Rings and plugs, dome tops, closures, shallow drawn and specialized can parts |
| T - 2.5 | 52 - 58 | Combines the characteristics of T-2 and T-3. | Battery cell bodies, small can ends and bodies |
| T - 3 | 54 - 60 | Shallow drawing, general purpose with fair degree of stiffness to minimum fluting | Can ends and bodies, large diameter closures, crown caps |
| T - 4 | 58 - 64 | Moderate stiffness | Can bodies, crown caps and closures |
| T - 5 | 62 - 68 | Increased stiffness to resist buckling without the use of rephosphorized steel | Can ends and bodies |
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