Aluminized Steel Coils (Type 1)
Aluminized steel sheet (Type 1) is made from a Cold Rolled substrate, upon which a hot-dipped Aluminum-Silicon coating is applied to both sides. It offers excellent resistance for applications in which a combination of heat and corrosion resistance is required. Aluminized sustains heat and oxidation protection up to about 900° F. without discoloration, while maintaining its strength up to about 1200° F. It generally affords about twice the corrosion protection of hot-dipped galvanized, however, unlike Galvanized, Aluminum is not self-sacrificial. As such, cut edges or other uncoated areas will exhibit rust. Aluminized has a silvery-satin smooth appearance.
Major end-uses include automotive mufflers, toasters, ovens, heaters, broilers, heat shields, fireplaces and chimney linings. It is normally produced in accordance with ASTM A463 standards and tolerances.
| Min. Coating Wt. - oz/ft2 total both sides | ||
| Designation | Triple Spot Test | Single Spot Test |
| T1-40 | .40 | .30 |
| T1-25 | .25 | .20 |
| T1-13 | .13 | .10 |
Base Metal Classifications
Commercial (Types A, B, C), Forming, Deep Drawing, Extra Deep Drawing, Structural.
| Mechanical Properties | ||||
| Classification | Yield Str. psi | Tens. Str. psi | Elong. % / 2" | Rockwell B |
| Commercial Steel (Type B) | 45000 typ. | 56000 typ. | >22 typ. | 48 typ. |
| Forming Steel | 35000 typ. | 52000 typ. | >26 typ. | 38 typ. |
| Deep Drawing Steel | 32000 typ. | 49000 typ. | >32 typ. | 34 typ. |
| Extra Deep Drawing Steel | 24000 typ. | 45000 typ. | >38 typ. | 30 typ. |
| Structural Steel - Grd. 40 | 40000 min. | 55000 min. | 16 min. | 65 typ. |