8176 (8176-H24, AlFeSi) Aluminum
8176 aluminum is an otherwise-unclassified alloy of aluminum. Cited properties are appropriate for the H24 temper. To achieve this temper, the metal is strain hardened, and then partially annealed, to a strength that is roughly halfway between annealed (O) and full-hard (H28). 8176 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-8176. AlFeSi is the EN chemical designation. Additionally, the UNS number is A98176.
It originally received its standard designation in 1976.
It has the highest electrical conductivity among the otherwise unclassified aluminums in the database.
The graph bars on the material properties cards below compare 8176 aluminum to: otherwise unclassified aluminums (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
Elastic (Young's, Tensile) Modulus
69 GPa 10 x 106 psi
Elongation at Break
15 %
Fatigue Strength
59 MPa 8.5 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
26 GPa 3.8 x 106 psi
Shear Strength
70 MPa 10 x 103 psi
Tensile Strength: Ultimate (UTS)
160 MPa 23 x 103 psi
Tensile Strength: Yield (Proof)
95 MPa 14 x 103 psi
Thermal Properties
Latent Heat of Fusion
400 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
660 °C 1210 °F
Melting Onset (Solidus)
650 °C 1190 °F
Specific Heat Capacity
900 J/kg-K 0.21 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
61 % IACS
Electrical Conductivity: Equal Weight (Specific)
200 % IACS
Otherwise Unclassified Properties
Base Metal Price
9.5 % 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
1190 L/kg 140 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
21 MJ/m3
Resilience: Unit (Modulus of Resilience)
66 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
16 points
Strength to Weight: Bending
24 points
Thermal Diffusivity
93 mm2/s
Thermal Shock Resistance
7.0 points
Alloy Composition
| Al | 98.6 to 99.6 | |
| Fe | 0.4 to 1.0 | |
| Si | 0.030 to 0.15 | |
| Zn | 0 to 0.1 | |
| Ga | 0 to 0.030 | |
| res. | 0 to 0.15 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B800: Standard Specification for 8000 Series Aluminum Alloy Wire for Electrical Purposes - Annealed and Intermediate Tempers
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002
Aluminum Standards and Data, Aluminum Association Inc., 2013
EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993