Aluminum 8009/SiC vs Al2O3f/AC8A
Aluminum · grade comparison
Aluminum 8009/SiC and Al2O3f/AC8A are both aluminum grades. 8009/SiC is the stronger of the two: yield strength 425 MPa (61.6 ksi) against 230 MPa (33.4 ksi) for Al2O3f/AC8A, about 85% more; tensile strength follows at 500 MPa (72.5 ksi) vs 260 MPa (37.7 ksi). 8009/SiC is the more ductile: elongation 5% versus 0.6% for Al2O3f/AC8A, and 8009/SiC is harder (150 HB vs 125 HB). Al2O3f/AC8A is lighter (2.79 g/cm³ vs 2.95 g/cm³ for 8009/SiC) and 8009/SiC is stiffer (100 GPa vs 95 GPa).
8009/SiCChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Al2O3f/AC8AChoose it when weight is the constraint, or when the part sees heat.
8009/SiC vs Al2O3f/AC8A: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Reduction in Area
Charpy V-Notch Impact (RT)
Hardness, Rockwell B
Same in both: Poisson's Ratio 0.3
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
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 42 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Castability
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 | 8009/SiC | Al2O3f/AC8A |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Both take the same 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
8009/SiC vs Al2O3f/AC8A — frequently asked
Is 8009/SiC stronger than Al2O3f/AC8A?
Yes. 8009/SiC has a typical yield strength of 425 MPa (61.6 ksi) against 230 MPa (33.4 ksi) for Al2O3f/AC8A — about 85% more. Tensile strength is 500 MPa (72.5 ksi) vs 260 MPa (37.7 ksi).
Which is cheaper, 8009/SiC or Al2O3f/AC8A?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose 8009/SiC over Al2O3f/AC8A?
Pick 8009/SiC when strength drives the design, or when the part is bent, formed or impact-loaded. Pick Al2O3f/AC8A when weight is the constraint, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 8009/SiC and Al2O3f/AC8A 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.