Aluminum 8009 vs 8079
Aluminum · grade comparison
Aluminum 8009 and 8079 are both aluminum grades. 8009 is the stronger of the two: yield strength 385 MPa (55.8 ksi) against 35 MPa (5.08 ksi) for 8079, about 11 times as much; tensile strength follows at 415 MPa (60.2 ksi) vs 85 MPa (12.3 ksi). In exchange, 8079 is the more ductile: elongation 25% versus 12% for 8009, and 8009 is harder (120 HB vs 22 HB). 8079 is lighter (2.72 g/cm³ vs 2.94 g/cm³ for 8009) and 8009 is stiffer (88 GPa vs 69 GPa). On the shop floor, 8009 machines more easily (fair vs poor), 8079 welds better (very good vs poor), and 8079 sits in a lower cost tier (budget, $) than 8009 (high, $$$$).
8009Choose it when strength drives the design, or when the part sees heat.
8079Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
8009 vs 8079: 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
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
Same in both: Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 645°C1,193 °F
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)
Same in both: Min Service Temperature -196°C-321 °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)
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 | 8079 |
|---|---|---|
| Sheet metal | — | Yes |
| Default condition | — | — |
| Relative cost | $$$$ High | $ Budget |
| Min. machined wall | — | — |
| Best machined surface | — | — |
| Anodizing Type II | — | Yes |
| Cerakote | — | Yes |
| Chem Film (Alodine) | — | Yes |
| E-Coating | — | Yes |
| Electropolishing | — | Yes |
| Hard Anodize Type III w/ PTFE | — | Yes |
| Hard Anodizing Type III | — | Yes |
| Nickel Plating | — | Yes |
| PTFE Coating | — | Yes |
| Painting | — | Yes |
| Powder Coating | — | Yes |
They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
8009 vs 8079 — frequently asked
Is 8009 stronger than 8079?
Yes. 8009 has a typical yield strength of 385 MPa (55.8 ksi) against 35 MPa (5.08 ksi) for 8079 — about 11 times as much. Tensile strength is 415 MPa (60.2 ksi) vs 85 MPa (12.3 ksi).
Which is cheaper, 8009 or 8079?
8079 is the lower-cost material: it sits in the budget tier ($) while 8009 is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.
Which is easier to machine, 8009 or 8079?
8009. Its machinability rates fair (40/100) against poor (30/100) for 8079; for welding the order is 8079 first (very good, 75/100) then 8009 (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 8009 and 8079 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.