Cleveland-Cliffs - Model Type 2 -Aluminized Carbon Steel

MANUFACTURING
Steel strip is hot- dipped in a bath of molten, commercially pure aluminum. Controlled processing results in a durable bonded coating of controlled thickness.

COATING MICRO-STRUCTURE
A duplex aluminum/ aluminum-iron alloy coating provides a double line of defense against corrosion. The coating is tightly bound to the steel substrate and closely controlled for thickness and uniformity.

BASIC COATING CORROSION BEHAVIOR
A passive aluminum layer resists corrosion arising from dissolved oxygen, CO., and high velocity waters. The alloy provides backup abrasion/erosion resistance while inhibiting pit growth.

MANUFACTURING
Aluminized Steel Type 2 is produced by continuous hot-dip coating of steel strip in a bath of molten, commercially pure aluminum. Cleaning the strip in a non-oxidizing/reducing furnace atmosphere assures a pristine surface for coating adherence. Interaction of molten aluminum with the steel surface produces a metallurgical bond and provides corrosion protection. Line speed, bath temperature and air finishing knives control aluminum coating thickness.