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Aluminum 5050 vs 5657

Aluminum · grade comparison

Aluminum 5050 and 5657 are both aluminum grades, both corrosion resistant al. 5050 is the stronger of the two: tensile strength 170 MPa (24.7 ksi) against 160 MPa (23.2 ksi) for 5657, about 6% more. In exchange, 5657 is the more ductile: elongation 12% versus 9% for 5050, and 5050 is harder (46 HB vs 40 HB). 5050 runs hotter in service (150°C vs 120°C continuous). On the shop floor, 5050 machines more easily (fair vs poor) and 5050 welds better (excellent vs very good).

5050Choose it when strength drives the design, or when the part sees heat.

5657Choose it when the part is bent, formed or impact-loaded.

5050 vs 5657: properties

50505657

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

68.9 GPa10 Msi
69 GPa10 Msi

Shear Modulus

25.9 GPa3.8 Msi
26 GPa3.8 Msi

Bulk Modulus

75 GPa10.9 Msi
70 GPa10.2 Msi

Tensile Strength (Ultimate)

170 MPa24.7 ksi
160 MPa23.2 ksi

Yield Strength (0.2% offset)

145 MPa21 ksi
140 MPa20.3 ksi

Elongation at Break

9%
12%

Shear Strength

115 MPa16.7 ksi
95 MPa13.8 ksi

Fatigue Strength (Endurance Limit)

90 MPa13.1 ksi
60 MPa8.7 ksi

Hardness, Brinell

46 HB
40 HB

Same in both: Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Melting Point (Solidus)

627°C1,161 °F
638°C1,180 °F

Liquidus Temperature

652°C1,206 °F
657°C1,215 °F

Same in both: Density 2.69 g/cm³0.1 lb/in³

Thermal

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

Thermal Conductivity

191 W/m·K110 BTU/hr·ft·°F
176 W/m·K102 BTU/hr·ft·°F

Latent Heat of Fusion

397 J/g171 BTU/lb
395 J/g170 BTU/lb

Max Service Temperature (continuous)

150°C302 °F
120°C248 °F

Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.8 µm/m·K13.2 µin/in·°F · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

50 % IACS
54 % IACS

Electrical Resistivity

3.45×10⁻⁸ Ω·m1.36 µΩ·in
3.19×10⁻⁸ Ω·m1.26 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

75 / 100
62 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V

Manufacturability

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

Machinability

40 / 100
30 / 100

Machinability Rating (AISI 1212 = 100 %)

30%
35%

Weldability

85 / 100
70 / 100

Formability (cold)

80 / 100
70 / 100

Brazeability / Solderability

35 / 100
25 / 100

Polishability

70 / 100
95 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

200 MJ/kg85,985 BTU/lb
205 MJ/kg88,134 BTU/lb

Embodied Carbon (primary production)

12 kg CO₂/kg
12.5 kg CO₂/kg

Embodied Water

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

Typical Recycled Content

35%
12%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

63 kN·m/kg
59 kN·m/kg

Specific Stiffness (E / density)

25.6 MN·m/kg
25.7 MN·m/kg

Modulus of Resilience

153 kJ/m³
142 kJ/m³

Thermal Diffusivity

78.9 mm²/s
72.7 mm²/s

Thermal Shock Resistance Index

20
17

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 scale50505657

Manufacturing and finishing

Capability50505657
Default condition——
Relative cost$ Budget$ Budget
Min. machined wall0.5 mm0.5 mm
Best machined surfaceRa 0.8 µmRa 0.8 µm

Both are offered for CNC machining and Sheet metal. Both take the same 16 finishes: Anodizing Type II, Cerakote, Chem Film (Alodine), DLC, E-Coating, Electroless Nickel (EN), Electropolishing, Epoxy Coating, Gold Plating, Hard Anodize Type III w/ PTFE, Hard Anodizing Type III, Nickel Plating and 4 more.

5050 vs 5657 — frequently asked

Is 5050 stronger than 5657?

Yes. 5050 has a typical tensile strength of 170 MPa (24.7 ksi) against 160 MPa (23.2 ksi) for 5657 — about 6% more.

Which is cheaper, 5050 or 5657?

Both sit in the same relative cost tier ($, budget); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, 5050 or 5657?

5050. Its machinability rates fair (40/100) against poor (30/100) for 5657; for welding the order is 5050 first (excellent, 85/100) then 5657 (very good, 70/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 5050 and 5657 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.