4007-H12 Aluminum
4007-H12 aluminum is 4007 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). It has the highest strength and lowest ductility compared to the other variants of 4007 aluminum.
The graph bars on the material properties cards below compare 4007-H12 aluminum to: 4000-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
44
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
5.1 %
Fatigue Strength
88 MPa 13 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
90 MPa 13 x 103 psi
Tensile Strength: Ultimate (UTS)
160 MPa 23 x 103 psi
Tensile Strength: Yield (Proof)
120 MPa 18 x 103 psi
Thermal Properties
Latent Heat of Fusion
410 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
650 °C 1200 °F
Melting Onset (Solidus)
590 °C 1100 °F
Specific Heat Capacity
890 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
170 W/m-K 96 BTU/h-ft-°F
Thermal Expansion
23 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
42 % IACS
Electrical Conductivity: Equal Weight (Specific)
140 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % relative
Density
2.8 g/cm3 180 lb/ft3
Embodied Carbon
8.1 kg CO2/kg material
Embodied Energy
150 MJ/kg 65 x 103 BTU/lb
Embodied Water
1160 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
7.4 MJ/m3
Resilience: Unit (Modulus of Resilience)
110 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
49 points
Strength to Weight: Axial
15 points
Strength to Weight: Bending
23 points
Thermal Diffusivity
67 mm2/s
Thermal Shock Resistance
6.7 points
Alloy Composition
| Al | 94.1 to 97.6 | |
| Si | 1.0 to 1.7 | |
| Mn | 0.8 to 1.5 | |
| Fe | 0.4 to 1.0 | |
| Ni | 0.15 to 0.7 | |
| Cr | 0.050 to 0.25 | |
| Cu | 0 to 0.2 | |
| Mg | 0 to 0.2 | |
| Ti | 0 to 0.1 | |
| Zn | 0 to 0.1 | |
| Co | 0 to 0.050 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002
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
ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: Mechanical properties
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products