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Cleveland-Cliffs - Model Type 1 -Aluminized Carbon Steel
ALUMINIZED TYPE 1 STEEL is continuously hot-dip coated on both sides with an aluminum (AI)/silicon (Si) coating. The hot-dip process, pioneered by Cleveland-Cliffs, provides a tight, metallurgical bond between the steel and the coating. This results in a material with the strength of steel, plus the corrosion protection of aluminum and the synergistic heat protection of an aluminum/silicon alloy.
CORROSION RESISTANCE
Aluminized Steel Type 1 has superior compared to zinc-coated materials for atmospheric and salt spray corrosion. performance resistance to atmospheric and salt spray corrosion.
FORMABILITY
Aluminized Steel Type 1 can be used to containing simple bends to parts with requirements. produce parts deep drawing requirements.
HIGH REFLECTIVITY
Aluminized Steel Type 1 has excellent heat reflectivity during exposures to temperatures below800 8F (427 °C), reflecting up to 80% of the radiant heat that impinges upon it.
HIGH TEMPERATURE PROPERTIES
Aluminlzed Steel Type 1 is an excellent heat-resistant material effective up to 1250 ^F (677 "C}. For applications above 800 T (427 °C), where alloying of the coating is a concern, Cleveland-Cliffs` DOHT grade has been specially formulated to resist alloying at temperatures up to 1000 *F (538 °C).
Coating Characteristics
Aluminized Type 1 (T1) coating contains approximately 91% aluminum and 9% silicon that is metallurgically bonded to the steel substrate. The hot-dip coating process assures a tightly adherent, iniform coating on both sides of the product. A schematic of the coating cross-section is shown in Figure 1.
Aluminized Steel Type 1 is supplied in coating weights ranging from T1 13 (0.13 oz./ft?) to T1 60 (0.60 oz./ ft?), as shown in Table 1. Most common are T1 25 and T1 40. Lighter coating weights (T1 13 or T1 25) are recommended for severe forming applications. For coating weights not listed, contact your Cleveland-Cliffs Steel sales representative.
Surface Protection and Lubrication
To prevent staining in transit and storage, it is recommended that Aluminized Steel Type 1 be supplied with a rust-preventative protective oil. In some cases, a pre-applied press forming lubricant can be supplied. A dry film (acrylic/polymer) lubricant can also be supplied by further processing Aluminized Steel Type 1 through a coil coating facility. These specialty organic coatings are easily removed with a mild alkaline cleaner. To further enhance protection against storage stain. a chemical surface treatment (chrome-free) can be applied to Aluminized Steel Type 1. This treatment is not recommended if the final product will be painted unless the appropriate pretreatments are performed.