Alcan International Limited

Graeme John Marshall

Nicholas Charles Parson

Barry Roy Ellard

Alan Gray

Peter Karl Limbach

Martin Heinze

Ricky A Ricks

Karl Albert Herbst

Richard Hamerton

Alan John Flemming

A population of extrusion billets has a specification such that every billet is of an alloy of composition (in wt. %): Fe&#x3c;0.35; Si 0.20-0.6; Mn&#x3c;0.10; Mg 0.25-0.9; Cu&#x3c;0.015; Ti&#x3c;0.10; Cr&#x3c;0.10; Zn&#x3c;0.03; balance Al of commercial purity. After ageing to T5 or T6 temper, extruded sections can be etched and anodised to give extruded matt anodised sections having improved properties.

Aluminum alloy and extrusion

A method of converting an ingot of a 6000 series aluminium alloy to self-annealing sheet, comprises subjecting the ingot to a two-stage homogenisation treatment, first at at least 560&deg; C. and then at 450&deg; C. to 480&deg; C., then hot rolling the homogenised ingot at a starting hot roll temperature of 450&deg; C. to 480&deg; C. and a finishing hot roll temperature of 320&deg; C. to 360&deg; C. The resulting hot rolled sheet has an unusually low Cube recrystallisation component.

AA6000 aluminum sheet method

A population of extrusion billets has a specification such that every billet is of an alloy of composition (in wt. %) : Fe<0.35; Si 0.20-0.6; Mn<0.10; Mg 0.25-0.9; Cu<0.015; Ti<0.10; Cr<0.10; Zn<0.03; balance Al of commercial purity. After ageing to T5 or T6 temper, extruded sections can be etched and anodized to give extruded matte anodized sections having improved properties.

Aluminium alloy and extrusion

Aluminium alloy brazing sheet

Aluminum alloys suitable for lithographic printing plates

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Greatworth, United Kingdom

Graeme John Marshall