Aluminum AlSi7Mg0.6 vs Scalmalloy
Aluminum · grade comparison
Aluminum AlSi7Mg0.6 and Scalmalloy are both aluminum grades. Scalmalloy is the stronger of the two: tensile strength 400 MPa (58 ksi) against 355 MPa (51.5 ksi) for AlSi7Mg0.6, about 13% more. Scalmalloy is the more ductile: elongation 14% versus 10% for AlSi7Mg0.6, and AlSi7Mg0.6 is harder (115 HV vs 105 HV). AlSi7Mg0.6 runs hotter in service (150°C vs 120°C continuous) and AlSi7Mg0.6 conducts heat better (155 W/m·K vs 110 W/m·K). On the shop floor, AlSi7Mg0.6 machines more easily (65 vs 55 out of 100) and AlSi7Mg0.6 sits in a lower cost tier (high, $$$$) than Scalmalloy (specialty, $$$$$).
AlSi7Mg0.6Choose it when the part sees heat, or when the part is machined in volume.
ScalmalloyChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
AlSi7Mg0.6 vs Scalmalloy: 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)
Elongation at Break
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 · Yield Strength (0.2% offset) 285 MPa41.3 ksi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Liquidus Temperature
Same in both: Density 2.67 g/cm³0.1 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · 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)
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 | AlSi7Mg0.6 | Scalmalloy |
|---|---|---|
| 3D printing | — | Yes |
| Default condition | — | As Printed |
| Relative cost | $$$$ High | $$$$$ Specialty |
| Min. machined wall | — | — |
| Best machined surface | — | — |
| Anodized (Aluminum AM) | — | Yes |
| Plated (Metal AM) | — | Yes |
They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.
AlSi7Mg0.6 vs Scalmalloy — frequently asked
Is Scalmalloy stronger than AlSi7Mg0.6?
Yes. Scalmalloy has a typical tensile strength of 400 MPa (58 ksi) against 355 MPa (51.5 ksi) for AlSi7Mg0.6 — about 13% more.
Which is cheaper, AlSi7Mg0.6 or Scalmalloy?
AlSi7Mg0.6 is the lower-cost material: it sits in the high tier ($$$$) while Scalmalloy is specialty ($$$$$). 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, AlSi7Mg0.6 or Scalmalloy?
AlSi7Mg0.6, by a small margin. Both rate good for machinability — 65/100 against 55/100 for Scalmalloy; for welding the order is AlSi7Mg0.6 first (good, 65/100) then Scalmalloy (good, 60/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in AlSi7Mg0.6 and Scalmalloy 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.