Aluminum Al2O3f/AC8A vs AlSiC-9
Aluminum · grade comparison
Aluminum Al2O3f/AC8A and AlSiC-9 are both aluminum grades. Al2O3f/AC8A is the stronger of the two: yield strength 230 MPa (33.4 ksi) against 190 MPa (27.6 ksi) for AlSiC-9, about 21% more; tensile strength follows at 260 MPa (37.7 ksi) vs 210 MPa (30.5 ksi). Al2O3f/AC8A is the more ductile: elongation 0.6% versus 0.4% for AlSiC-9, and AlSiC-9 is harder (215 HB vs 125 HB). Al2O3f/AC8A is lighter (2.79 g/cm³ vs 3.01 g/cm³ for AlSiC-9) and AlSiC-9 is stiffer (188 GPa vs 95 GPa). On the shop floor, Al2O3f/AC8A machines more easily (poor vs not recommended).
Al2O3f/AC8AChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Al2O3f/AC8A vs AlSiC-9: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Hardness, Rockwell C
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Max Service Temperature (continuous) 350°C662 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Strength versus weight
Yield strength against density for every aluminum grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Al2O3f/AC8A | AlSiC-9 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
Al2O3f/AC8A vs AlSiC-9 — frequently asked
Is Al2O3f/AC8A stronger than AlSiC-9?
Yes. Al2O3f/AC8A has a typical yield strength of 230 MPa (33.4 ksi) against 190 MPa (27.6 ksi) for AlSiC-9 — about 21% more. Tensile strength is 260 MPa (37.7 ksi) vs 210 MPa (30.5 ksi).
Which is cheaper, Al2O3f/AC8A or AlSiC-9?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Al2O3f/AC8A or AlSiC-9?
Al2O3f/AC8A. Its machinability rates poor (20/100) against not recommended (8/100) for AlSiC-9.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Al2O3f/AC8A and AlSiC-9 side by side — material, machining time, tolerance and finish in one quote. Certified material data ships with the order on request.
Typical handbook values for the conditions named above, normalised for comparison. Hardness on non-Brinell scales is converted approximately for charting only. Request certified data with your order for design-critical properties.