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Aluminum AlSi10Mg vs EN AC-46600

Aluminum · grade comparison

Aluminum AlSi10Mg and EN AC-46600 are both aluminum grades. AlSi10Mg is the stronger of the two: yield strength 265 MPa (38.4 ksi) against 140 MPa (20.3 ksi) for EN AC-46600, about 89% more; tensile strength follows at 460 MPa (66.7 ksi) vs 240 MPa (34.8 ksi). AlSi10Mg is the more ductile: elongation 7% versus 1.5% for EN AC-46600, and AlSi10Mg is harder (119 HB vs 80 HB). EN AC-46600 is stiffer (75 GPa vs 70 GPa) and EN AC-46600 conducts heat better (145 W/m·K vs 120 W/m·K). On the shop floor, EN AC-46600 machines more easily (good vs fair), AlSi10Mg welds better (good vs poor), and EN AC-46600 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-46600Choose it when the part is machined in volume, or when cost is the deciding factor.

AlSi10Mg vs EN AC-46600: properties

AlSi10MgEN AC-46600

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

70 GPa10.2 Msi
75 GPa10.9 Msi

Shear Modulus

26.5 GPa3.8 Msi
27 GPa3.9 Msi

Bulk Modulus

69 GPa10 Msi
71 GPa10.3 Msi

Tensile Strength (Ultimate)

460 MPa66.7 ksi
240 MPa34.8 ksi

Yield Strength (0.2% offset)

265 MPa38.4 ksi
140 MPa20.3 ksi

Elongation at Break

7%
1.5%

Compressive Strength

480 MPa69.6 ksi
250 MPa36.3 ksi

Shear Strength

280 MPa40.6 ksi
160 MPa23.2 ksi

Fatigue Strength (Endurance Limit)

90 MPa13.1 ksi
80 MPa11.6 ksi

Fracture Toughness (K_IC)

22 MPa·√m20 ksi·√in
16 MPa·√m14.6 ksi·√in

Charpy V-Notch Impact (RT)

4 J2.6 ft·lbf
3 J2.2 ft·lbf

Hardness, Brinell

119 HB
80 HB

Hardness, Rockwell B

66 HRB
—

Hardness, Vickers

125 HV
—

Same in both: Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

557°C1,035 °F
525°C977 °F

Liquidus Temperature

596°C1,105 °F
610°C1,130 °F

Thermal

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

Thermal Conductivity

120 W/m·K69.3 BTU/hr·ft·°F
145 W/m·K83.8 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
21.5 µm/m·K11.9 µin/in·°F

Min Service Temperature

-196°C-321 °F
-60°C-76 °F

Same in both: Latent Heat of Fusion 425 J/g183 BTU/lb · Max Service Temperature (continuous) 150°C302 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

24 % IACS
32 % IACS

Electrical Resistivity

7.2×10⁻⁸ Ω·m2.83 µΩ·in
5.4×10⁻⁸ Ω·m2.13 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.83 V
-0.75 V

Corrosion Resistance

55 / 100
42 / 100

Manufacturability

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

Machinability

50 / 100
68 / 100

Machinability Rating (AISI 1212 = 100 %)

50%
130%

Weldability

60 / 100
30 / 100

Formability (cold)

10 / 100
—

Castability

92 / 100
85 / 100

Brazeability / Solderability

30 / 100
25 / 100

Polishability

55 / 100
40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

240 MJ/kg103,182 BTU/lb
195 MJ/kg83,835 BTU/lb

Embodied Carbon (primary production)

15 kg CO₂/kg
11.5 kg CO₂/kg

Embodied Water

1,200 L/kg144 gal/lb
1,100 L/kg132 gal/lb

Typical Recycled Content

5%
85%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

172 kN·m/kg
87 kN·m/kg

Specific Stiffness (E / density)

26.2 MN·m/kg
27.3 MN·m/kg

Modulus of Resilience

502 kJ/m³
131 kJ/m³

Thermal Diffusivity

49.9 mm²/s
59.9 mm²/s

Thermal Shock Resistance Index

38
22

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-46600AlSi10Mg

Manufacturing and finishing

CapabilityAlSi10MgEN AC-46600
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-46600 — frequently asked

Is AlSi10Mg stronger than EN AC-46600?

Yes. AlSi10Mg has a typical yield strength of 265 MPa (38.4 ksi) against 140 MPa (20.3 ksi) for EN AC-46600 — about 89% more. Tensile strength is 460 MPa (66.7 ksi) vs 240 MPa (34.8 ksi).

Which is cheaper, AlSi10Mg or EN AC-46600?

EN AC-46600 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 is easier to machine, AlSi10Mg or EN AC-46600?

EN AC-46600. Its machinability rates good (68/100) against fair (50/100) for AlSi10Mg; for welding the order is AlSi10Mg first (good, 60/100) then EN AC-46600 (poor, 30/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in AlSi10Mg and EN AC-46600 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.