| Physical Properties of 5056-O | Metric | English | Comments |
| Density | 2.64 g/cc | 0.0954 lb/in³ | AA; Typical |
| |
| Mechanical Properties | Metric | English | Comments |
| Hardness, Brinell | 65 | 65 | AA; Typical; 500 g load; 10 mm ball |
| Hardness, Knoop | 88 | 88 | Converted from Brinell Hardness Value |
| Hardness, Vickers | 75 | 75 | Converted from Brinell Hardness Value |
| Tensile Strength, Ultimate | 290 MPa | 42000 psi | AA; Typical |
 | 41.0 MPa
@Temperature 371 °C | 5950 psi
@Temperature 700 °F | |
| | 76.0 MPa
@Temperature 316 °C | 11000 psi
@Temperature 601 °F | |
| | 110 MPa
@Temperature 260 °C | 16000 psi
@Temperature 500 °F | |
| | 152 MPa
@Temperature 204 °C | 22000 psi
@Temperature 399 °F | |
| | 214 MPa
@Temperature 149 °C | 31000 psi
@Temperature 300 °F | |
| | 290 MPa
@Temperature 24.0 °C | 42100 psi
@Temperature 75.2 °F | |
| Tensile Strength, Yield | 152 MPa | 22000 psi | AA; Typical |
 | 28.0 MPa
@Temperature 371 °C | 4060 psi
@Temperature 700 °F | |
| | 48.0 MPa
@Temperature 316 °C | 6960 psi
@Temperature 601 °F | |
| | 69.0 MPa
@Temperature 260 °C | 10000 psi
@Temperature 500 °F | |
| | 90.0 MPa
@Temperature 204 °C | 13100 psi
@Temperature 399 °F | |
| | 117 MPa
@Temperature 149 °C | 17000 psi
@Temperature 300 °F | |
| | 150 MPa
@Temperature 24.0 °C | 21800 psi
@Temperature 75.2 °F | |
Elongation at Break  | 35 %
@Temperature 24.0 °C | 35 %
@Temperature 75.2 °F | |
| | 55 %
@Temperature 149 °C | 55 %
@Temperature 300 °F | |
| | 65 %
@Temperature 204 °C | 65 %
@Temperature 399 °F | |
| | 80 %
@Temperature 260 °C | 80 %
@Temperature 500 °F | |
| | 100 %
@Temperature 316 °C | 100 %
@Temperature 601 °F | |
| | 130 %
@Temperature 371 °C | 130 %
@Temperature 700 °F | |
| | 35 %
@Diameter 12.7 mm | 35 %
@Diameter 0.500 in | AA; Typical |
| Modulus of Elasticity | 71.0 GPa | 10300 ksi | AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus. |
| Poissons Ratio | 0.33 | 0.33 | Estimated from trends in similar Al alloys. |
| Fatigue Strength | 138 MPa
@# of Cycles 5.00e+8 | 20000 psi
@# of Cycles 5.00e+8 | completely reversed stress; RR Moore machine/specimen |
| Shear Modulus | 25.9 GPa | 3760 ksi | |
| Shear Strength | 179 MPa | 26000 psi | AA; Typical |
| |
| Electrical Properties | Metric | English | Comments |
| Electrical Resistivity | 0.00000598 ohm-cm
@Temperature 20.0 °C | 0.00000598 ohm-cm
@Temperature 68.0 °F | AA; Typical |
| |
| Thermal Properties | Metric | English | Comments |
CTE, linear  | 22.5 µm/m-°C
@Temperature -50.0 - 20.0 °C | 12.5 µin/in-°F
@Temperature -58.0 - 68.0 °F | |
| | 24.1 µm/m-°C
@Temperature 20.0 - 100 °C | 13.4 µin/in-°F
@Temperature 68.0 - 212 °F | AA; Typical; average over range |
| | 25.2 µm/m-°C
@Temperature 20.0 - 200 °C | 14.0 µin/in-°F
@Temperature 68.0 - 392 °F | |
| | 26.1 µm/m-°C
@Temperature 20.0 - 300 °C | 14.5 µin/in-°F
@Temperature 68.0 - 572 °F | |
| Specific Heat Capacity | 0.904 J/g-°C | 0.216 BTU/lb-°F | |
| Thermal Conductivity | 117 W/m-K | 810 BTU-in/hr-ft²-°F | AA; Typical at 77°F |
| Melting Point | 568.3 - 638 °C | 1055 - 1180 °F | AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness |
| Solidus | 568.3 °C | 1055 °F | AA; Typical |
| Liquidus | 638 °C | 1180 °F | AA; Typical |
| |
| Processing Properties | Metric | English | Comments |
| Annealing Temperature | 413 °C | 775 °F | holding at a temperature not required |
| Hot-Working Temperature | 316 - 482 °C | 600 - 900 °F | |
| |
| Component Elements Properties | Metric | English | Comments |
| Aluminum, Al | 92.9 - 95.4 % | 92.9 - 95.4 % | As remainder |
| Chromium, Cr | 0.05 - 0.20 % | 0.05 - 0.20 % | |
| Copper, Cu | <= 0.10 % | <= 0.10 % | |
| Iron, Fe | <= 0.40 % | <= 0.40 % | |
| Magnesium, Mg | 4.5 - 5.6 % | 4.5 - 5.6 % | |
| Manganese, Mn | 0.05 - 0.20 % | 0.05 - 0.20 % | |
| Other, each | <= 0.05 % | <= 0.05 % | |
| Other, total | <= 0.15 % | <= 0.15 % | |
| Silicon, Si | <= 0.30 % | <= 0.30 % | |
| Zinc, Zn | <= 0.10 % | <= 0.10 % | |
