4007 (AlSi1.5Mn) Aluminum
4007 aluminum is a 4000-series aluminum alloy. The main alloying addition is silicon. 4007 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-4007. Additionally, the EN chemical designation is AlSi1,5Mn. And the UNS number is A94007.
It originally received its standard designation in 1978.
The properties of 4007 aluminum include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 4007 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
32 to 44
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
5.1 to 23 %
Fatigue Strength
46 to 88 MPa 6.7 to 13 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
80 to 90 MPa 12 to 13 x 103 psi
Tensile Strength: Ultimate (UTS)
130 to 160 MPa 18 to 23 x 103 psi
Tensile Strength: Yield (Proof)
50 to 120 MPa 7.3 to 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 to 23 MJ/m3
Resilience: Unit (Modulus of Resilience)
18 to 110 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
49 points
Strength to Weight: Axial
12 to 15 points
Strength to Weight: Bending
20 to 23 points
Thermal Diffusivity
67 mm2/s
Thermal Shock Resistance
5.5 to 6.7 points
Alloy Composition
Among wrought aluminum alloys, the composition of 4007 aluminum is notable for including cobalt (Co) and nickel (Ni). Cobalt is used to improve mechanical properties. Nickel is used to increase mechanical strength at elevated temperatures, and to reduce thermal expansion. However, it can increase susceptibility to pitting corrosion in certain alloys.
| 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
Similar Alloys
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