Ionbond™ CVD 29 Al2O3

Aluminum oxide coating for high temperature forming applications

Ionbond CVD 29 Al2O3 is a multi-layered CVD coating engineered to be able to cope with the aggressive conditions present in high temperature forming applications. Ionbond CVD 29 Al2O3 exhibits excellent thermal stability, chemical inertness, and high wear resistance, which makes it the leading solution for hot extrusion applications for both ferrous and non-ferrous alloys.
Additionally, the thermal stability, density, and corrosion resistance of Ionbond CVD 29 makes it an ideal solution for open tolerance tools used in aluminum casting applications where sticking of aluminum is the primary cause of downtime.

Ionbond CVD 29 is deposited at 1000 °C. Therefore it is only recommended for tool materials compatible with the CVD process. Dimensional change will occur on tool steel materials coated with Ionbond CVD 29, so sufficient dimensional tolerances are required to accommodate the expected dimensional change.

Technical data



α Al2O3, κ Al2O3



Coating thickness

8 - 15 μm

Max Service Temp.

1200 °C

Deposition Temp.

1000 °C

Hardness HV 0.05


Friction vs. steel, dry