Specifically designed for precision mould applications, the Alumec range has been developed to combine high strength and mechanical stability with outstanding machinability. Over the three decades since the brand's introduction, new Alumec alloys have been developed to satisfy the enhanced performance requirements of specific moulding technologies, such as improved weldability and resistance to stress corrosion or sustained high temperatures.

For the specifier, this gives the reassurance of knowing that the performance characteristics of an Alumec mould will exactly match process requirements every time, with all that implies in terms of reliable long-term operation. Alumec alloys are supplied fully heat treated, with no further treatment required.

• high strength with excellent machinability and stability
• greater through thickness hardness consistency than 7075-T651
• more sustainable strength than 7075-T651 (especially in thick sections)
• easily repair welded
• Size: plate thickness up to 305mm and round bar up to 160mm diameter
• Applications: injection moulding, simple thermoplastics and blow moulding
• easily repair welded
  
  

• even higher strength than Alumec 79, with excellent machinability and stability
• even better through thickness hardness consistency than Alumec 79
• easily repair welded
• Size: plate thickness up to 305mm and round bar up to 200mm diameter
• Applications: more demanding injection and blow moulding applications requiring superior wear resistance and polishability
  
  

• increased resistance to cooling channel corrosion and stress corrosion cracking
• higher strength than Alumec 79 and 7075-T651
• excellent through thickness hardness consistency
• easily repair welded
• Size: plate thickness up to 305mm
• Applications: processes requiring prolonged use, such as blow moulding
  
  

• excellent weldability by fusion welding (comparable to medium strength engineering alloys such as 5083, 6082 and 6061)
• weld hardness can be increased by a simple heat treatment developed by Alcoa specifically for Alumec F7
• high intermediate strength with very good through thickness hardness consistency
• Size: plate thickness up to 203mm (stretched)
• Applications: wherever extensive welded modifications are envisaged, such as prototype moulds. Not recommended for load-bearing welded fabrications
  
  

• retains strength at mould temperatures up to 180ºC (unlike most aluminium alloy mould materials)
• minimal variation in mechanical properties across the thickness range
• little variation in mechanical properties across the thickness range
• good through thickness hardness consistency
• Size: plate thickness up to 305mm
• Applications: rubber moulding