General
Alumec 89 is a high strength aluminium alloy supplied in the form of hot rolled, heat treated plate. It undergoes a special cold stretching operation for maximum stress relieving.
Thanks to its high strength and good stability, Alumec 89 has become widely used in the tooling industry.
Delivery condition: heat treated to 146-180 Brinell.
Alumec 89 has the following characteristics which make it suitable for many types of tools especially plastics moulds:

• Excellent machinability: High cutting speeds, reduced machining time, lower tooling costs, quicker deliveries.

• Low weight: The low weight, which is approximately 1/3 of the weight of steel, allows easier and more convenient tool handling. Low inertia makes it possible to speed up closing and opening of moulds.

• High thermal conductivity: Cycle times are reduced and less complicated cooling systems may be used.

• Good stability: A special stress relieving operation guarantees minimal deformation during and after machining.

• Good corrosion resistance: Good resistance against all commonly used plastics materials.

• Suitable for surface treatments: Alumec 89 can be hard anodized, hard chromium or nickel plated for increased hardness, wear resistance and corrosion resistance.

Application areas
The properties and characteristics which Alumec 89 offers make it an ideal material for prototype tools and for moulding short and medium length production runs which are not subjected to high pressures or abrasive plastics.
Considerably shorter tool making times, lower tooling costs and shorter cycle times give valuable savings both for the tool maker and the tool user when using Alumec 89.