Aluminum AlSi7Mg As Printed vs AlSi7Mg Stress Relieved
Aluminum · AlSi7Mg temper comparison
AlSi7Mg As Printed and AlSi7Mg Stress Relieved are two conditions of the same aluminum grade, AlSi7Mg: As Printed (as built (as printed)) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. AlSi7Mg As Printed is the stronger of the two: yield strength 240 MPa (34.8 ksi) against 200 MPa (29 ksi) for AlSi7Mg Stress Relieved, about 20% more; tensile strength follows at 350 MPa (50.8 ksi) vs 300 MPa (43.5 ksi). In exchange, AlSi7Mg Stress Relieved is the more ductile: elongation 12% versus 8% for AlSi7Mg As Printed, and AlSi7Mg As Printed is harder (105 HB vs 90 HB). AlSi7Mg Stress Relieved runs hotter in service (150°C vs 120°C continuous) and AlSi7Mg Stress Relieved conducts heat better (150 W/m·K vs 130 W/m·K).
AlSi7Mg As PrintedChoose it when strength drives the design.
AlSi7Mg Stress RelievedChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
AlSi7Mg As Printed vs AlSi7Mg 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.
AlSi7Mg As PrintedAlSi7Mg 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)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33 · Compressive Strength 250 MPa36.3 ksi · Shear Strength 215 MPa31.2 ksi · Charpy V-Notch Impact (RT) 6 J4.4 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 2.67 g/cm³0.1 lb/in³ · Melting Point (Solidus) 557°C1,035 °F · Liquidus Temperature 613°C1,135 °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 963 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.5 µm/m·K11.9 µin/in·°F · Latent Heat of Fusion 389 J/g167 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 6.2×10⁻⁸ Ω·m2.44 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 70% · Weldability 70 / 100 · Formability (cold) 20 / 100 · Castability 90 / 100 · Brazeability / Solderability 30 / 100 · Polishability 60 / 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.
AlSi7Mg As Printed vs AlSi7Mg Stress Relieved — frequently asked
Is AlSi7Mg As Printed stronger than AlSi7Mg Stress Relieved?
Yes. AlSi7Mg As Printed has a typical yield strength of 240 MPa (34.8 ksi) against 200 MPa (29 ksi) for AlSi7Mg Stress Relieved — about 20% more. Tensile strength is 350 MPa (50.8 ksi) vs 300 MPa (43.5 ksi).
Which condition does FabDigit quote by default, As Printed or Stress Relieved?
As Printed is the default AlSi7Mg 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.
When should I choose AlSi7Mg As Printed over AlSi7Mg Stress Relieved?
Pick AlSi7Mg As Printed when strength drives the design. Pick AlSi7Mg Stress Relieved when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in AlSi7Mg As Printed and AlSi7Mg 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.