Coated Metals
Tin Plate Temper Designations - Temper designations as applied to Tin Mill products are diametrically opposite to those used to indicate the degree of hardness for Cold Rolled Strip and Sheet steels. To illustrate. #1 Temper (T-1) in the Tin Mill numbering system indicates a Dead Soft condition, whereas #1 Temper as concerns C. R. Strip and Sheet Steel indicates a Full Hard Rolled Condition.
For Reference Only - To avoid confusion specify Rockwell hardness
| Temper | Aim Rockwell 30 -T Scale |
Characteristics |
| T1 | 46 - 52 | Soft for Drawing |
| T-2 | 50 - 56 | For Moderate Drawing - Some Stiffness Required |
| T-3 | 54 - 60 | Shallow Drawing for General Purpose with Fair Degree of Stiffness |
| T-4 | 58 - 64 | For General Purpose with Increased Stiffness |
| T-5 | 62 - 68 | Rephosphorized Steel- Stiffness to resist buckling |
| T-5 CA TU | 62 - 68 | Continuous Anneal Not Rephosphorized |
| T-6 | 67 - 73 | Rephosphorized Steel - for great stiffness |
| T-6 CA | 67 - 73 | Continuous Anneal Rephosphorized for Great Stiffness |
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