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Aluminum 6060 vs 6065

Aluminum · grade comparison

Aluminum 6060 and 6065 are both aluminum grades. 6065 is the stronger of the two: yield strength 375 MPa (54.4 ksi) against 170 MPa (24.7 ksi) for 6060, about 121% more; tensile strength follows at 400 MPa (58 ksi) vs 215 MPa (31.2 ksi). In exchange, 6060 is the more ductile: elongation 12% versus 10% for 6065, and 6065 is harder (120 HB vs 75 HB). 6060 conducts heat better (200 W/m·K vs 172 W/m·K). On the shop floor, 6065 machines more easily (excellent vs good), 6060 welds better (excellent vs fair), and 6060 sits in a lower cost tier (budget, $) than 6065 (premium, $$$).

6060Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

6065Choose it when strength drives the design, or when the part is machined in volume.

6060 vs 6065: properties

60606065

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Bulk Modulus

69 GPa10 Msi
68 GPa9.9 Msi

Tensile Strength (Ultimate)

215 MPa31.2 ksi
400 MPa58 ksi

Yield Strength (0.2% offset)

170 MPa24.7 ksi
375 MPa54.4 ksi

Elongation at Break

12%
10%

Shear Strength

140 MPa20.3 ksi
240 MPa34.8 ksi

Fatigue Strength (Endurance Limit)

60 MPa8.7 ksi
90 MPa13.1 ksi

Fracture Toughness (K_IC)

30 MPa·√m27.3 ksi·√in
29 MPa·√m26.4 ksi·√in

Hardness, Brinell

75 HB
120 HB

Hardness, Vickers

80 HV
128 HV

Same in both: Elastic (Young's) Modulus 69 GPa10 Msi · Shear Modulus 26 GPa3.8 Msi · Poisson's Ratio 0.33

Physical

Density and transition temperatures.

Density

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

Melting Point (Solidus)

600°C1,112 °F
582°C1,080 °F

Liquidus Temperature

655°C1,211 °F
652°C1,206 °F

Thermal

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

Thermal Conductivity

200 W/m·K116 BTU/hr·ft·°F
172 W/m·K99.4 BTU/hr·ft·°F

Specific Heat Capacity

898 J/kg·K0.21 BTU/lb·°F
896 J/kg·K0.21 BTU/lb·°F

Latent Heat of Fusion

397 J/g171 BTU/lb
393 J/g169 BTU/lb

Same in both: Thermal Expansion (CTE, 20–100 °C) 23.4 µm/m·K13 µin/in·°F · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -196°C-321 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

54 % IACS
44 % IACS

Electrical Resistivity

3.2×10⁻⁸ Ω·m1.26 µΩ·in
3.9×10⁻⁸ Ω·m1.54 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.83 V
-0.74 V

Same in both: Corrosion Resistance 68 / 100

Manufacturability

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

Machinability

55 / 100
88 / 100

Weldability

90 / 100
35 / 100

Formability (cold)

55 / 100
30 / 100

Castability

25 / 100
40 / 100

Brazeability / Solderability

60 / 100
30 / 100

Polishability

80 / 100
60 / 100

Machinability Rating (AISI 1212 = 100 %)

—
90%

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

13 kg CO₂/kg
12 kg CO₂/kg

Typical Recycled Content

35%
25%

Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Water 1,200 L/kg144 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

80 kN·m/kg
148 kN·m/kg

Specific Stiffness (E / density)

25.6 MN·m/kg
25.5 MN·m/kg

Modulus of Resilience

209 kJ/m³
1,019 kJ/m³

Thermal Diffusivity

82.5 mm²/s
70.8 mm²/s

Thermal Shock Resistance Index

27
43

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 scale60606065

Manufacturing and finishing

Capability60606065
CNC machiningYes—
Sheet metalYes—
Default condition——
Relative cost$ Budget$$$ Premium
Min. machined wall0.5 mm—
Best machined surfaceRa 0.8 µm—
Anodizing Type IIYes—
CerakoteYes—
Chem Film (Alodine)Yes—
DLCYes—
E-CoatingYes—
ElectropolishingYes—
Hard Anodize Type III w/ PTFEYes—
Hard Anodizing Type IIIYes—
Nickel PlatingYes—
PTFE CoatingYes—
PaintingYes—
Powder CoatingYes—

They share 4 finishes: Electroless Nickel (EN), Epoxy Coating, Gold Plating, Silver Plating.

6060 vs 6065 — frequently asked

Is 6065 stronger than 6060?

Yes. 6065 has a typical yield strength of 375 MPa (54.4 ksi) against 170 MPa (24.7 ksi) for 6060 — about 121% more. Tensile strength is 400 MPa (58 ksi) vs 215 MPa (31.2 ksi).

Which is cheaper, 6060 or 6065?

6060 is the lower-cost material: it sits in the budget tier ($) while 6065 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, 6060 or 6065?

6065. Its machinability rates excellent (88/100) against good (55/100) for 6060; for welding the order is 6060 first (excellent, 90/100) then 6065 (fair, 35/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 6060 and 6065 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.