Product Data - TC Aluminium - The Name in Aluminium

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Aluminium Grades & Application

Process of Making Aluminium

PRODUCT DATA FINISH & TEMPER

STANDARD FINISH

Mill Finish
Natural aluminium finish off the extrusion press.
Natural Anodised Finish
Aluminium is a corrosion resistant metal due to the film of aluminium oxide that forms naturally on its surface.
By anodising aluminium using an electro-chemical process that thickens the natural oxide film on the aluminium, the resulting anodised aluminium surfaces become extremely hard, and are corrosion and wear resistant
The natural anodised finish conforms to BS EN12373-1 and is available in nominal film thickness of 6, 10, 15, 20 and 25 microns.
The recommended film thickness is 10 microns and 25 microns for normal and corrosive atmospheric conditions, respectively.

COLOURED ANODISED FINISH

Aluminium extrusions can be treated in durable inorganic colours to yield a finish which is permanent, lightfast, resistant to abrasion and corrosion, and unchanging in colour intensity. The finish available in bronze and black anodise.

In the colour process, inorganic metal particles are deposited electrolytically in the pores of a clear anodic film. Electrolytic deposition results in the colour particles being fixed at the very base of the pores, allowing virtually the full thickness of the anodic film to protect them.

The extrusion is sealed in boiling deionised water, which closes off the pores in the anodic film and permanently seals in the colour particles.

There are five colours available: Light, Medium Light, Medium, Dark Bronze and Black anodise in nominal film thickness of 15, 20 and 25 microns.

EXTRUSIONS
GRADE	TEMPER	TEMPER DESCRIPTION
AA6063	T4	Solution heat-treated and naturally aged to a substantially stable condition. No artificial ageing required.
	T4	Air cooled from the extrusion temperature and artificially aged to improve mechanical properties
	T5	Solution heat-treated and then artificially aged. These products normally water quenched at the press.
AA6061	T6	Solution heat-treated and then artificially aged. These products normally water quenched at the press.

SHEETS / PLATES / COILS
GRADE	TEMPER	TEMPER DESCRIPTION
AA1100	H14	Strain-hardened – 1⁄2 hard
AA3003	H14	Strain-hardened – 1⁄2 hard
AA5052	H32	Strain-hardened and stabilised – 1⁄4 hard
AA5083	H111	Annealed and slightly strain-hardened during subsequent operations such as stretching or levelling
	H112	Annealed and slightly strain-hardened during subsequent operations such as stretching or levelling
	H116	Applies to aluminium-magnesium alloys with a magnesium content of 4% or more and for which mechanical property limits and exfoliation corrosion resistance are specified
	H321	Strain hardened less than required for a controlled H32 temper (Work hardened then stabilised by low-temperature heat treatment to quarter hard).
AA6061	T6	Solution heat-treated and then artificially aged. These products normally water quenched at the press.
AA6061	T651	Solution heat-treated, Stress-relieved by controlled stretching (permanent set 0.5% to 3% for sheet, 1.5% to 3% for plate, 1% to 3% for rolled or cold-finished rod and bar, 1% to 5% for hand or ring forging and rolled ring) and then artificially aged. The products receive no further straightening after stretching.