383.0 (383.0-F, SC102A, A03830) Cast Aluminum
383.0 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 383.0 is the Aluminum Association (AA) designation for this material. 383 is the SAE designation. And A03830 is the UNS number. Older literature may refer to this material as ASTM SC102 or ASTM SC102A.
The graph bars on the material properties cards below compare 383.0 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
75
Elastic (Young's, Tensile) Modulus
73 GPa 11 x 106 psi
Elongation at Break
3.5 %
Fatigue Strength
150 MPa 21 x 103 psi
Impact Strength: V-Notched Charpy
4.0 J 3.0 ft-lb
Poisson's Ratio
0.33
Shear Modulus
28 GPa 4.0 x 106 psi
Tensile Strength: Ultimate (UTS)
280 MPa 40 x 103 psi
Tensile Strength: Yield (Proof)
150 MPa 22 x 103 psi
Thermal Properties
Latent Heat of Fusion
540 J/g
Maximum Temperature: Mechanical
170 °C 340 °F
Melting Completion (Liquidus)
580 °C 1080 °F
Melting Onset (Solidus)
540 °C 1000 °F
Specific Heat Capacity
880 J/kg-K 0.21 BTU/lb-°F
Thermal Conductivity
96 W/m-K 56 BTU/h-ft-°F
Thermal Expansion
21 µm/m-K
Electrical Properties
Electrical Conductivity: Equal Volume
23 % IACS
Electrical Conductivity: Equal Weight (Specific)
74 % IACS
Otherwise Unclassified Properties
Base Metal Price
10 % relative
Calomel Potential
-690 mV
Density
2.8 g/cm3 170 lb/ft3
Embodied Carbon
7.5 kg CO2/kg material
Embodied Energy
140 MJ/kg 60 x 103 BTU/lb
Embodied Water
1030 L/kg 120 gal/lb
Common Calculations
Resilience: Ultimate (Unit Rupture Work)
8.2 MJ/m3
Resilience: Unit (Modulus of Resilience)
150 kJ/m3
Stiffness to Weight: Axial
15 points
Stiffness to Weight: Bending
50 points
Strength to Weight: Axial
28 points
Strength to Weight: Bending
34 points
Thermal Diffusivity
39 mm2/s
Thermal Shock Resistance
13 points
Alloy Composition
Among cast aluminum alloys, the composition of 383.0 aluminum is notable for containing comparatively high amounts of silicon (Si) and zinc (Zn). Silicon is used to improve casting fluidity and lower melting temperature. It also has a strengthening effect. Zinc is used to achieve significant increases in strength, at the cost of increased susceptibility to stress corrosion cracking. Among other things, this limits weldability.
| Al | 79.7 to 88.5 | |
| Si | 9.5 to 11.5 | |
| Cu | 2.0 to 3.0 | |
| Zn | 0 to 3.0 | |
| Fe | 0 to 1.3 | |
| Mn | 0 to 0.5 | |
| Ni | 0 to 0.3 | |
| Sn | 0 to 0.15 | |
| 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 B85: Standard Specification for Aluminum-Alloy Die Castings
Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002
Advanced Materials in Automotive Engineering, Jason Rowe (editor), 2012
ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993