319.0 (SC64D, A03190) Cast Aluminum
319.0 aluminum is an aluminum alloy formulated for casting. 319.0 is the Aluminum Association (AA) designation for this material. A03190 is the UNS number. Additionally, the SAE designation is 326. The British Standard (BS) designation is LM4. And the AFNOR (French) designation is A-S5U. Older literature may refer to this material as ASTM SC64D, but this is now discouraged.
The properties of 319.0 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 319.0 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
78 to 84
Elastic (Young's, Tensile) Modulus
72 GPa 10 x 106 psi
Elongation at Break
1.8 to 2.0 %
Fatigue Strength
76 to 80 MPa 11 to 12 x 103 psi
Poisson's Ratio
0.33
Shear Modulus
27 GPa 3.9 x 106 psi
Shear Strength
170 to 210 MPa 24 to 30 x 103 psi
Tensile Strength: Ultimate (UTS)
190 to 240 MPa 27 to 35 x 103 psi
Tensile Strength: Yield (Proof)
110 to 180 MPa 16 to 26 x 103 psi
Thermal Properties
Latent Heat of Fusion
480 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
600 °C 1120 °F
Melting Onset (Solidus)
540 °C 1000 °F
Solidification (Pattern Maker's) Shrinkage
1.3 %
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
110 W/m-K 65 BTU/h-ft-°F
Thermal Expansion
22 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
27 % IACS
Electrical Conductivity: Equal Weight (Specific)
84 % IACS
Otherwise Unclassified Properties
Base Metal Price
10 % relative
Density
2.9 g/cm3 180 lb/ft3
Embodied Carbon
7.7 kg CO2/kg material
Embodied Energy
140 MJ/kg 62 x 103 BTU/lb
Embodied Water
1080 L/kg 130 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
3.3 to 3.9 MJ/m3
Resilience: Unit (Modulus of Resilience)
88 to 220 kJ/m3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
48 points
Strength to Weight: Axial
18 to 24 points
Strength to Weight: Bending
25 to 30 points
Thermal Diffusivity
44 mm2/s
Thermal Shock Resistance
8.6 to 11 points
Alloy Composition
Among cast aluminum alloys, the composition of 319.0 aluminum is notable for containing a comparatively high amount of copper (Cu). Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.
| Al | 85.8 to 91.5 | |
| Si | 5.5 to 6.5 | |
| Cu | 3.0 to 4.0 | |
| Fe | 0 to 1.0 | |
| Zn | 0 to 1.0 | |
| Mn | 0 to 0.5 | |
| Ni | 0 to 0.35 | |
| Ti | 0 to 0.25 | |
| Mg | 0 to 0.1 | |
| res. | 0 to 0.5 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
ASTM B618: Standard Specification for Aluminum-Alloy Investment Castings
ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings
ASTM B26: Standard Specification for Aluminum-Alloy Sand Castings
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002
Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993