G.AL® C330R

Higher Strength, Six-Sides Sawn Plate 

Alloy EN AW 7021 [AlZn5,5Mg1,5]
Type of Alloy heat treatable
Temper solution heat treated, quenched & artificially aged, T79
Surface six-sides sawn, roughness Ra <15 µm

The higher-strength aluminium plate G.AL® C330R from alloy EN AW 7021 (AlZn5.5Mg1.5) with material temper T79 sawn on all sides is characterised by very high strength and hardness as well as very good low-stress properties. The very low strength and hardness decrease from plate edge to the centre makes G.AL® C330R a superior material in virtually all sectors of the capital goods industry.

Special features

  • Very high strength and hardness
  • Very good dimensional stability
  • Low-stress properties
  • Very stress relieved
  • Six-sides sawn surface
  • Available up to 480mm thickness


Product information C330R
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G.AL C330R sawn aluminium cast plate for the mould making


More highly-loaded components such as tool changers (revolver magazine) for turning machines are one of the classic applications of G.AL® C330R due to its good strength.

G.AL C330R sawn aluminium cast plate for the mould making


The high thermal conductivity of G.AL® C330R makes for short cycle times in foaming, blowing, deep drawing, RIM and injection moulds (low and medium pressure).

G.AL C330R sawn aluminium cast plate for the mechanical and special machine engineering

Mechanical engineering and special machine engineering

With G.AL® C330R, holders, clamping devices, etc., even with very high degrees of machining, can be produced quickly and safely due to the very good machinability and dimensional stability.

G.AL C330R higher-strength sawn aluminium cast plate for applications in the field of automation technology


In highly-loaded components such as jigs and swivel devices, G.AL® C330R frequently replaces high- and ultra-high-strength rolled plates characterised by extreme residual stresses.

G.AL C330R höherfeste gesägte Aluminium-Gussplatte für Anwendungen in Handhabungsautomaten

Handling machines

Tool and component carriers are preferably made of low-stress and wear-resistant Al materials. G.AL® C330R fulfils these requirements completely.

G.AL C330R höherfeste gesägte Aluminium-Gussplatte für Anwendungen unter thermischen Belastungen

Thermal stresses

High-strength aluminium alloys tend to undergo irreversible loss of strength and structural changes in continuous operating temperatures above 90 °C. G.AL® C330R can be used permanently at 120 °C and for short periods (4 – 6 h) up to 140 °C without suffering damage. They can even withstand temperatures up to 160 °C for 1 – 2 h.

Expert tip

All high-alloyed materials are very sensitive to contact corrosion, especially when steel, copper, brass or bronze was previously used on the cutting machines. In most cases, then there is also a pH value of well above 8.5. To avoid contact corrosion, the components should be taken off the machine immediately after machining and thoroughly cleaned and dried.

Sven Flaake, Technical Product Manager, GLEICH Aluminium
Sven Flaake, technical product manager, GLEICH Aluminium

G.AL® is a registered trademark of GLEICH Aluminium GmbH, Kaltenkirchen, Germany

Related Products

G.AL® C330

The higher-strength G.AL C330 precision machined plate can be used for a variety of applications wich require excellent dimensional stability.

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The higher strength DYNAMIC type of the alloy EN AW 7021. Free of microporosity. Is used in many pneumatic and hydraulic applications.

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