201.0-T7 Cast Aluminum
201.0-T7 aluminum is 201.0 aluminum in the T7 temper. To achieve this temper, the metal is solution heat-treated and stabilized by artificial overaging. It has the highest strength and lowest ductility compared to the other variants of 201.0 aluminum.
The graph bars on the material properties cards below compare 201.0-T7 aluminum to: ANSI/AA cast 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
Brinell Hardness
130
Elastic (Young's, Tensile) Modulus
71 GPa 10 x 106 psi
Elongation at Break
4.4 %
Fatigue Strength
150 MPa 21 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
290 MPa 42 x 103 psi
Tensile Strength: Ultimate (UTS)
470 MPa 68 x 103 psi
Tensile Strength: Yield (Proof)
400 MPa 59 x 103 psi
Thermal Properties
Latent Heat of Fusion
390 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
650 °C 1200 °F
Melting Onset (Solidus)
570 °C 1060 °F
Solidification (Pattern Maker's) Shrinkage
1.3 %
Specific Heat Capacity
870 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
120 W/m-K 70 BTU/h-ft-°F
Thermal Expansion
19 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
33 % IACS
Electrical Conductivity: Equal Weight (Specific)
97 % IACS
Otherwise Unclassified Properties
Base Metal Price
38 % relative
Calomel Potential
-670 mV
Density
3.1 g/cm3 190 lb/ft3
Embodied Carbon
8.7 kg CO2/kg material
Embodied Energy
160 MJ/kg 69 x 103 BTU/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
19 MJ/m3
Resilience: Unit (Modulus of Resilience)
1160 kJ/m3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
45 points
Strength to Weight: Axial
42 points
Strength to Weight: Bending
44 points
Thermal Diffusivity
45 mm2/s
Thermal Shock Resistance
25 points
Alloy Composition
| Al | 92.1 to 95.1 | |
| Cu | 4.0 to 5.2 | |
| Ag | 0.4 to 1.0 | |
| Mg | 0.15 to 0.55 | |
| Mn | 0.2 to 0.5 | |
| Ti | 0.15 to 0.35 | |
| Fe | 0 to 0.15 | |
| Si | 0 to 0.1 | |
| res. | 0 to 0.1 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Further Reading
ASTM B618: Standard Specification for Aluminum-Alloy Investment Castings
ASTM B26: Standard Specification for Aluminum-Alloy Sand Castings
Handbook of Aluminum Bonding Technology and Data, J. D. Minford, 1993
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993