Aluminum Scalmalloy As Printed vs Scalmalloy Stress Relieved
Aluminum · Scalmalloy temper comparison
Scalmalloy As Printed and Scalmalloy Stress Relieved are two conditions of the same aluminum grade, Scalmalloy: As Printed (as built (as printed)) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Scalmalloy Stress Relieved is the stronger of the two: yield strength 390 MPa (56.6 ksi) against 285 MPa (41.3 ksi) for Scalmalloy As Printed, about 37% more; tensile strength follows at 460 MPa (66.7 ksi) vs 400 MPa (58 ksi). Scalmalloy Stress Relieved is harder — 123 HB against 100 HB for Scalmalloy As Printed — which matters for wear surfaces and threads. Scalmalloy Stress Relieved runs hotter in service (150°C vs 120°C continuous).
Scalmalloy Stress RelievedChoose it when strength drives the design, or when surface hardness matters.
Scalmalloy As Printed vs Scalmalloy Stress Relieved: 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.
Scalmalloy As PrintedScalmalloy Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 70 GPa10.2 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 68 GPa9.9 Msi · Poisson's Ratio 0.33 · Elongation at Break 14%
Physical
Density and transition temperatures.
Same in both: Density 2.67 g/cm³0.1 lb/in³ · Melting Point (Solidus) 574°C1,065 °F · Liquidus Temperature 638°C1,180 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.5 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.87 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Weldability 60 / 100 · Castability 25 / 100 · Brazeability / Solderability 25 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 350 MJ/kg150,473 BTU/lb · Embodied Carbon (primary production) 26 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 5%
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.
Scalmalloy As Printed vs Scalmalloy Stress Relieved — frequently asked
Is Scalmalloy Stress Relieved stronger than Scalmalloy As Printed?
Yes. Scalmalloy Stress Relieved has a typical yield strength of 390 MPa (56.6 ksi) against 285 MPa (41.3 ksi) for Scalmalloy As Printed — about 37% more. Tensile strength is 460 MPa (66.7 ksi) vs 400 MPa (58 ksi).
Which condition does FabDigit quote by default, As Printed or Stress Relieved?
As Printed is the default Scalmalloy condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, Scalmalloy As Printed or Scalmalloy Stress Relieved?
Scalmalloy As Printed. Its machinability rates good (55/100) against fair (50/100) for Scalmalloy Stress Relieved.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Scalmalloy As Printed and Scalmalloy Stress Relieved 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.