2024

AMS 4339 / AlCu4Mg1 / 2024 / T851

Chemical Properties % Value
Silicon (Si)0,00 - 0,50
Chromium (Cr)0,00 - 0,10
Manganese (Mn)0,30 - 0,90
Magnesium (Mg)1,20 - 1,80
Copper (Cu)3,80 - 4,90
Titanium (Ti)0,00 - 0,15
Iron (Fe)0,00 - 0,50
Zinc (Zn)0,00 - 0,25
Aluminium (Al)Balance
Physical Properties Value
Density2.78 g/cm³
Melting Point502 °C
Thermal Expansion23 x 10^-6 /K
Modulus of Elasticity73.1 GPa
Thermal Conductivity151 W/m.K
Electrical Resistivity30% IACS
Mechanical Properties Value
Proof Strength400 - 450 MPa
Yield Strength448 - 483 MPa
Shear Strength296 MPa
Elongation A50 mm5% - 7%
Modulus of Elasticity73.1 GPa

A medium to high strength alloy with, dependent upon temper, minimum Proof Stress up to 57 ksi / 390 Mpa and minimum Tensile Strength up to 66 ksi / 455 MPa

ALLOY DESIGNATIONS

Aluminium alloy 2024 has similarities to the following standard designations and specifications:

AMS QQ-A-250/4,  Alloy 2024,  UNS A92024

AMS 4041,  DIN AlCuMg2

AMS 4036, ISO AlCu4Mg

 

TEMPER TYPES

2024 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.

  • O - Soft
  • T3 - Solution heat treated, cold worked and naturally aged
  • T42 - Solution heat treated and naturaly aged to a substantially stable condition
  • T81 - Solution heat treated, cold worked then artificially aged
  • 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
  • T62 - Solution heat treated then artificially aged by the user
  • T851 - Solution heat treated then stress relieved by stretching then artificially aged.
  • T361 - Solution heat treated then stress relieved by stretching.
  • T72 - Solution heat treated then specially artificially aged for resistance to stress corrosion
  • T861

 

SUPPLIED FORMS

Alloy AMS 4037  is supplied in plate and sheet

  • Plate
  • Sheet
DELIVERY:
Mechanical Properties
Thickness (mm) Proof Strength (Min.) Yield Strength (Min.) Elongation A50 mm %
over 6,35 up to & incl. 12,7 mm 400 MPa 460 MPa ≥%5
over 12,7 up to & incl. 25,4 mm 400 MPa 455 MPa ≥%5
over 25,43 up to & incl. 38,07 mm 395 MPa 455 MPa ≥%5