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Aluminum AlSi10Mg vs EN AC-48000

Aluminum · grade comparison

Aluminum AlSi10Mg and EN AC-48000 are both aluminum grades. AlSi10Mg is the stronger of the two: tensile strength 460 MPa (66.7 ksi) against 295 MPa (42.8 ksi) for EN AC-48000, about 56% more. AlSi10Mg is the more ductile: elongation 7% versus 1% for EN AC-48000. EN AC-48000 is stiffer (82 GPa vs 70 GPa) and EN AC-48000 runs hotter in service (250°C vs 150°C continuous). On the shop floor, AlSi10Mg welds better (good vs poor) and EN AC-48000 sits in a lower cost tier (standard, $$) than AlSi10Mg (premium, $$$).

AlSi10MgChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

EN AC-48000Choose it when the part sees heat, or when cost is the deciding factor.

AlSi10Mg vs EN AC-48000: properties

AlSi10MgEN AC-48000

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

70 GPa10.2 Msi
82 GPa11.9 Msi

Shear Modulus

26.5 GPa3.8 Msi
31 GPa4.5 Msi

Bulk Modulus

69 GPa10 Msi
78 GPa11.3 Msi

Tensile Strength (Ultimate)

460 MPa66.7 ksi
295 MPa42.8 ksi

Yield Strength (0.2% offset)

265 MPa38.4 ksi
255 MPa37 ksi

Elongation at Break

7%
1%

Shear Strength

280 MPa40.6 ksi
195 MPa28.3 ksi

Fatigue Strength (Endurance Limit)

90 MPa13.1 ksi
95 MPa13.8 ksi

Fracture Toughness (K_IC)

22 MPa·√m20 ksi·√in
14 MPa·√m12.7 ksi·√in

Charpy V-Notch Impact (RT)

4 J2.6 ft·lbf
2 J1.5 ft·lbf

Hardness, Brinell

119 HB
115 HB

Hardness, Rockwell B

66 HRB
—

Hardness, Vickers

125 HV
120 HV

Same in both: Poisson's Ratio 0.33 · Compressive Strength 480 MPa69.6 ksi

Physical

Density and transition temperatures.

Density

2.67 g/cm³0.1 lb/in³
2.7 g/cm³0.1 lb/in³

Melting Point (Solidus)

557°C1,035 °F
510°C950 °F

Liquidus Temperature

596°C1,105 °F
570°C1,058 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

120 W/m·K69.3 BTU/hr·ft·°F
135 W/m·K78 BTU/hr·ft·°F

Specific Heat Capacity

900 J/kg·K0.21 BTU/lb·°F
880 J/kg·K0.21 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

21 µm/m·K11.7 µin/in·°F
19.5 µm/m·K10.8 µin/in·°F

Latent Heat of Fusion

425 J/g183 BTU/lb
490 J/g211 BTU/lb

Max Service Temperature (continuous)

150°C302 °F
250°C482 °F

Min Service Temperature

-196°C-321 °F
-60°C-76 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

24 % IACS
33 % IACS

Electrical Resistivity

7.2×10⁻⁸ Ω·m2.83 µΩ·in
5.2×10⁻⁸ Ω·m2.05 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.83 V
-0.8 V

Corrosion Resistance

55 / 100
42 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

50 / 100
48 / 100

Machinability Rating (AISI 1212 = 100 %)

50%
65%

Weldability

60 / 100
25 / 100

Formability (cold)

10 / 100
5 / 100

Castability

92 / 100
85 / 100

Brazeability / Solderability

30 / 100
20 / 100

Polishability

55 / 100
40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

240 MJ/kg103,182 BTU/lb
205 MJ/kg88,134 BTU/lb

Embodied Carbon (primary production)

15 kg CO₂/kg
12.5 kg CO₂/kg

Typical Recycled Content

5%
65%

Same in both: Embodied Water 1,200 L/kg144 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

172 kN·m/kg
109 kN·m/kg

Specific Stiffness (E / density)

26.2 MN·m/kg
30.4 MN·m/kg

Modulus of Resilience

502 kJ/m³
396 kJ/m³

Thermal Diffusivity

49.9 mm²/s
56.8 mm²/s

Thermal Shock Resistance Index

38
25

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.

20501002005002.22.42.62.83Density (g/cm³)Yield strength (MPa) — log scaleEN AC-48000AlSi10Mg

Manufacturing and finishing

CapabilityAlSi10MgEN AC-48000
3D printingYes—
Default conditionAs Printed—
Relative cost$$$ Premium$$ Standard
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.

AlSi10Mg vs EN AC-48000 — frequently asked

Is AlSi10Mg stronger than EN AC-48000?

Yes. AlSi10Mg has a typical tensile strength of 460 MPa (66.7 ksi) against 295 MPa (42.8 ksi) for EN AC-48000 — about 56% more.

Which is cheaper, AlSi10Mg or EN AC-48000?

EN AC-48000 is the lower-cost material: it sits in the standard tier ($$) while AlSi10Mg is premium ($$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which welds better, AlSi10Mg or EN AC-48000?

AlSi10Mg. Its weldability rates good (60/100) against poor (25/100) for EN AC-48000.

Ready to make it?

Upload a CAD file and FabDigit prices the part in AlSi10Mg and EN AC-48000 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.