3.3547 Aluminium alloy

Designation

Chemical composition:

Strength:

■ 68 - 75 HB
(≈ 230- 260 N/mm²)
● min. 78 HB
(≈ min. 270 N/mm²)

Thermal conductivity at 100 °C:

110-140 W/m K

Character:

not hardenable, homogenised, annealed aluminium alloy with particularly good machining and welding properties; excellent dimensional stability; ideally suited for anodising, hard chromium plating and chemical nickel plating; very high resistance to corrosion
Density: 2.66 kg/dm³
Coefficient of thermal expansion: 24.2 10-6 m/mK
Max. temperature permanent/short term: 90/110 °C

Application:

plates for mould tools, rotary tables, machined components for machine
and jig construction, moulds for prototypes and foamed parts

Treatment by

possible
Polishing, EDM, etching
Ideally suited:
Machining, welding

Heat treatment:

Note: Subsequent heat treatment may lead to
a deterioration of the mechanical properties.

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