Aluminium Alloy 2618A (Aluminum 2618) is a high strength aluminium alloy. Alloy 2618 (2618A) has good machinability and is fair resistance to atmospheric attack. Aluminium Alloy 2618A (Aluminum 2618) is typically used in aerospace and defence components. It is commonly used for pistons and rotating aircraft parts due to it's ability to work in higher temperature applications. 2618 is also used in high performance autosport applications.

ALLOY DESIGNATIONS

Aluminium alloy 2618 / 2618A has similarities to the following standard designations and specifications:

AIR 9048.150,  Alloy 2618 / 2618A ,  UNS A92618

ISO AlCu2Mg1.5Ni

TEMPER TYPES

2618 / 2618A is supplied in a wide range of tempers:
T351 is intended to provide material with low residual stresses and thus minimal distortion during machining, but does not provide optimal corrosion resistance.

• T351 - Solution heat treated then stress relieved by stretching. Equivalent to T4 condition.
• T4 - Solution heat treated and naturaly aged to a substantially stable condition
• T6 - Solution heat treated and artificially aged
• H28 - Solution heat treated then artificially aged by the user
• T62 - Solution heat treated then artificially aged by the user
• T651 - Solution heat treated, stress relieved by stretching then artificially aged
• T6511 - Solution heat treated and stress-relieved by stretching then artificially aged with minor straightening after aging - Equivalent to T4 condition
• T851 - Solution heat treated then stress relieved by stretching then artificially aged.

SUPPLIED FORMS

2618 / 2618A  is supplied in plate and sheet

• Plate
• Sheet
• Round Bar / Bar