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2024
ASTM B221 / AlCu4Mg1 / 2024 / T4
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 |
Density | 2.78 g/cm³ |
Melting Point | 502 °C |
Thermal Expansion | 23 x 10^-6 /K |
Modulus of Elasticity | 73.1 GPa |
Thermal Conductivity | 121 W/m.K |
Electrical Resistivity | 30% IACS |
Mechanical Properties | Value |
Proof Strength | 260 - 330 MPa |
Yield Strength | 395 - 495 MPa |
Shear Strength | 283 MPa |
Elongation A50 mm | 10% - 16% |
Modulus of Elasticity | 73.1 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, ASTM B209
DIN AlCuMg2, 3.1355
AMS 4077, 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
Mechanical Properties | |||
Thickness (mm) | Proof Strength (Min.) | Yield Strength (Min.) | Elongation A50 mm % |
over 0,25 up to & incl. 6,35 mm | 265 MPa | 427 MPa | 12% - 15% |
over 6,35 up to & incl. 12,7 mm | 265 MPa | 427 MPa | 10% |
over 12,7 up to & incl. 25,43 mm | 260 MPa | 420 MPa | ≥8% |
over 25,4 up to & incl. 50,8 mm | 260 MPa | 415 MPa | ≥6% - 7% |
over 50,8 up to & incl. 76,2 mm | 260 MPa | 400 MPa | ≥4% |