History

Rolled plate
Avional
EN AW 2024

Alloy 2024 is available in a hardened, stretched, and artificially aged state (T351).

Featuring a higher magnesium content, this material represents an improved version of 2017. An extremely popular alloy for aeronautical and mechanical structures that require maximum toughness and a good resistance to cracking.

Typically used for structural components that are subjected to static or dynamic stresses.

technical characteristics

Weldability

  • TIG/MIG: difficult
  • for resistance: difficult

Surface treatments

  • technical anodisation: good
  • decorative anodisation: average

Workability

  • good

Resistance to corrosion

  • normal atmospheres: average
  • marine atmospheres: critical

Availability

The alloy 2024 is available in a hardened, stretched, and artificially aged state (T351).

General information

Chemical Composition (%weight)

SiFeCuMnMgCrZnTi+Zr
maxmax4.000.51.3maxmaxmax
0.400.454.60.81.70.050.180.10


Physical properties  (typical values in the Physical state T351)

1 MPa = 1 N/mm2 = 0.10197 kg/mm2

  • specific weight: 2.78 g/cm3
  • elastic modulus: 73000 MPa
  • thermal conductivity: 110-130 W/m K
  • electrical conductivity: 16-19·106 S/m
  • thermal linear expansion coefficient (20°-100°C): 23.2·10-6 K-1

mechanical properties

Indicative values (state T351 / standard EN 485-2)

Thickness (from...to) [mm]Rm [MPa]Rp0.2 [MPa]A50 [%]
12.5 - 4044029011
41 - 804202908
81 - 1004002857

Typical mechanical values for different thicknesses

Thickness (from...to) [mm]Rm [MPa]Rp0.2 [MPa]A50 [%]HB
8 - 1545031015125
16 - 2545031515130
26 - 6045031014125
61 - 10244530014120

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