Aluminum AlSi12 As Printed vs AlSi12 Stress Relieved
Aluminum · AlSi12 temper comparison
AlSi12 As Printed and AlSi12 Stress Relieved are two conditions of the same aluminum grade, AlSi12: As Printed (as built (as printed)) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. AlSi12 As Printed is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 180 MPa (26.1 ksi) for AlSi12 Stress Relieved, about 39% more; tensile strength follows at 400 MPa (58 ksi) vs 300 MPa (43.5 ksi). In exchange, AlSi12 Stress Relieved is the more ductile: elongation 9% versus 5% for AlSi12 As Printed, and AlSi12 As Printed is harder (105 HB vs 78 HB). AlSi12 Stress Relieved runs hotter in service (150°C vs 120°C continuous) and AlSi12 Stress Relieved conducts heat better (145 W/m·K vs 120 W/m·K).
AlSi12 As PrintedChoose it when strength drives the design.
AlSi12 Stress RelievedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
AlSi12 As Printed vs AlSi12 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.
AlSi12 As PrintedAlSi12 Stress Relieved
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 72 GPa10.4 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 74 GPa10.7 Msi · Poisson's Ratio 0.33 · Compressive Strength 420 MPa60.9 ksi · Shear Strength 240 MPa34.8 ksi · Fracture Toughness (K_IC) 17 MPa·√m15.5 ksi·√in · Charpy V-Notch Impact (RT) 4 J3 ft·lbf
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 585°C1,085 °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) 20.4 µm/m·K11.3 µin/in·°F · Latent Heat of Fusion 510 J/g219 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).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 55 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Weldability 80 / 100 · Formability (cold) 15 / 100 · Castability 95 / 100 · Brazeability / Solderability 35 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 215 MJ/kg92,433 BTU/lb · Embodied Carbon (primary production) 13 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 10%
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.
AlSi12 As Printed vs AlSi12 Stress Relieved — frequently asked
Is AlSi12 As Printed stronger than AlSi12 Stress Relieved?
Yes. AlSi12 As Printed has a typical yield strength of 250 MPa (36.3 ksi) against 180 MPa (26.1 ksi) for AlSi12 Stress Relieved — about 39% more. Tensile strength is 400 MPa (58 ksi) vs 300 MPa (43.5 ksi).
Which condition does FabDigit quote by default, As Printed or Stress Relieved?
As Printed is the default AlSi12 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, AlSi12 As Printed or AlSi12 Stress Relieved?
AlSi12 Stress Relieved. Its machinability rates good (58/100) against fair (50/100) for AlSi12 As Printed.
Ready to make it?
Upload a CAD file and FabDigit prices the part in AlSi12 As Printed and AlSi12 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.