1050A-H12 Aluminum
1050A-H12 aluminum is 1050A aluminum in the H12 temper. To achieve this temper, the metal is strain hardened to a strength that is roughly a quarter of the way between annealed (O) and full-hard (H18). The graph bars on the material properties cards below compare 1050A-H12 aluminum to: 1000-series alloys (top), all aluminum alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Brinell Hardness
28
Elastic (Young's, Tensile) Modulus
68 GPa 9.9 x 106 psi
Elongation at Break
2.3 %
Fatigue Strength
50 MPa 7.2 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.7 x 106 psi
Shear Strength
58 MPa 8.4 x 103 psi
Tensile Strength: Ultimate (UTS)
100 MPa 15 x 103 psi
Tensile Strength: Yield (Proof)
73 MPa 11 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
660 °C 1220 °F
Melting Onset (Solidus)
650 °C 1190 °F
Specific Heat Capacity
900 J/kg-K 0.22 BTU/lb-°F
Thermal Conductivity
230 W/m-K 130 BTU/h-ft-°F
Thermal Expansion
24 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
59 % IACS
Electrical Conductivity: Equal Weight (Specific)
200 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.0 % relative
Density
2.7 g/cm3 170 lb/ft3
Embodied Carbon
8.2 kg CO2/kg material
Embodied Energy
150 MJ/kg 66 x 103 BTU/lb
Embodied Water
1200 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
2.1 MJ/m3
Resilience: Unit (Modulus of Resilience)
39 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
10 points
Strength to Weight: Bending
18 points
Thermal Diffusivity
94 mm2/s
Thermal Shock Resistance
4.5 points
Alloy Composition
| Al | 99.5 to 100 | |
| Fe | 0 to 0.4 | |
| Si | 0 to 0.25 | |
| Zn | 0 to 0.070 | |
| Mn | 0 to 0.050 | |
| Ti | 0 to 0.050 | |
| Cu | 0 to 0.050 | |
| Mg | 0 to 0.050 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984
EN 755-2: Aluminium and aluminium alloys. Extruded rod/bar, tube and profiles. Mechanical properties
EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties
ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products