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Aluminum AlSi10Mg vs EN AC-46200

Aluminum · grade comparison

Aluminum AlSi10Mg and EN AC-46200 are both aluminum grades. AlSi10Mg is the stronger of the two: yield strength 265 MPa (38.4 ksi) against 120 MPa (17.4 ksi) for EN AC-46200, about 121% more; tensile strength follows at 460 MPa (66.7 ksi) vs 200 MPa (29 ksi). AlSi10Mg is the more ductile: elongation 7% versus 1.5% for EN AC-46200, and AlSi10Mg is harder (119 HB vs 80 HB). EN AC-46200 is stiffer (75 GPa vs 70 GPa) and EN AC-46200 runs hotter in service (175°C vs 150°C continuous). On the shop floor, EN AC-46200 machines more easily (very good vs fair), AlSi10Mg welds better (good vs poor), and EN AC-46200 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-46200Choose it when the part sees heat, or when the part is machined in volume.

AlSi10Mg vs EN AC-46200: properties

AlSi10MgEN AC-46200

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
28 GPa4.1 Msi

Bulk Modulus

69 GPa10 Msi
72 GPa10.4 Msi

Tensile Strength (Ultimate)

460 MPa66.7 ksi
200 MPa29 ksi

Yield Strength (0.2% offset)

265 MPa38.4 ksi
120 MPa17.4 ksi

Elongation at Break

7%
1.5%

Compressive Strength

480 MPa69.6 ksi
—

Shear Strength

280 MPa40.6 ksi
155 MPa22.5 ksi

Fatigue Strength (Endurance Limit)

90 MPa13.1 ksi
70 MPa10.2 ksi

Fracture Toughness (K_IC)

22 MPa·√m20 ksi·√in
18 MPa·√m16.4 ksi·√in

Charpy V-Notch Impact (RT)

4 J2.6 ft·lbf
4 J3 ft·lbf

Hardness, Brinell

119 HB
80 HB

Hardness, Rockwell B

66 HRB
—

Hardness, Vickers

125 HV
85 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
510°C950 °F

Liquidus Temperature

596°C1,105 °F
600°C1,112 °F

Thermal

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

Thermal Conductivity

120 W/m·K69.3 BTU/hr·ft·°F
110 W/m·K63.6 BTU/hr·ft·°F

Specific Heat Capacity

900 J/kg·K0.21 BTU/lb·°F
963 J/kg·K0.23 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

Latent Heat of Fusion

425 J/g183 BTU/lb
389 J/g167 BTU/lb

Max Service Temperature (continuous)

150°C302 °F
175°C347 °F

Min Service Temperature

-196°C-321 °F
-80°C-112 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

24 % IACS
27 % IACS

Electrical Resistivity

7.2×10⁻⁸ Ω·m2.83 µΩ·in
6.4×10⁻⁸ Ω·m2.52 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
75 / 100

Machinability Rating (AISI 1212 = 100 %)

50%
—

Weldability

60 / 100
30 / 100

Formability (cold)

10 / 100
5 / 100

Castability

92 / 100
88 / 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
190 MJ/kg81,685 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%
80%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

172 kN·m/kg
73 kN·m/kg

Specific Stiffness (E / density)

26.2 MN·m/kg
27.3 MN·m/kg

Modulus of Resilience

502 kJ/m³
96 kJ/m³

Thermal Diffusivity

49.9 mm²/s
41.5 mm²/s

Thermal Shock Resistance Index

38
14

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-46200AlSi10Mg

Manufacturing and finishing

CapabilityAlSi10MgEN AC-46200
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-46200 — frequently asked

Is AlSi10Mg stronger than EN AC-46200?

Yes. AlSi10Mg has a typical yield strength of 265 MPa (38.4 ksi) against 120 MPa (17.4 ksi) for EN AC-46200 — about 121% more. Tensile strength is 460 MPa (66.7 ksi) vs 200 MPa (29 ksi).

Which is cheaper, AlSi10Mg or EN AC-46200?

EN AC-46200 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-46200?

EN AC-46200. Its machinability rates very good (75/100) against fair (50/100) for AlSi10Mg; for welding the order is AlSi10Mg first (good, 60/100) then EN AC-46200 (poor, 30/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in AlSi10Mg and EN AC-46200 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.