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Aluminum 6060 vs 6070

Aluminum · grade comparison

Aluminum 6060 and 6070 are both aluminum grades. 6070 is the stronger of the two: yield strength 350 MPa (50.8 ksi) against 170 MPa (24.7 ksi) for 6060, about 106% more; tensile strength follows at 380 MPa (55.1 ksi) vs 215 MPa (31.2 ksi). In exchange, 6060 is the more ductile: elongation 12% versus 10% for 6070, and 6070 is harder (120 HB vs 75 HB). 6060 conducts heat better (200 W/m·K vs 172 W/m·K). On the shop floor, 6060 welds better (excellent vs very good) and 6060 sits in a lower cost tier (budget, $) than 6070 (standard, $$).

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

6070Choose it when strength drives the design.

6060 vs 6070: properties

60606070

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Tensile Strength (Ultimate)

215 MPa31.2 ksi
380 MPa55.1 ksi

Yield Strength (0.2% offset)

170 MPa24.7 ksi
350 MPa50.8 ksi

Elongation at Break

12%
10%

Shear Strength

140 MPa20.3 ksi
235 MPa34.1 ksi

Fatigue Strength (Endurance Limit)

60 MPa8.7 ksi
97 MPa14.1 ksi

Fracture Toughness (K_IC)

30 MPa·√m27.3 ksi·√in
28 MPa·√m25.5 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 · Bulk Modulus 69 GPa10 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
566°C1,051 °F

Liquidus Temperature

655°C1,211 °F
649°C1,200 °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
900 J/kg·K0.21 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

23.4 µm/m·K13 µin/in·°F
23.5 µm/m·K13.1 µin/in·°F

Latent Heat of Fusion

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

Same in both: 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
-0.78 V

Corrosion Resistance

68 / 100
58 / 100

Manufacturability

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

Machinability

55 / 100
60 / 100

Weldability

90 / 100
70 / 100

Formability (cold)

55 / 100
35 / 100

Castability

25 / 100
—

Brazeability / Solderability

60 / 100
35 / 100

Polishability

80 / 100
60 / 100

Machinability Rating (AISI 1212 = 100 %)

—
200%

Sustainability

Primary-production footprint per kilogram.

Embodied Carbon (primary production)

13 kg CO₂/kg
12.5 kg CO₂/kg

Typical Recycled Content

35%
30%

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
140 kN·m/kg

Specific Stiffness (E / density)

25.6 MN·m/kg
25.5 MN·m/kg

Modulus of Resilience

209 kJ/m³
888 kJ/m³

Thermal Diffusivity

82.5 mm²/s
70.5 mm²/s

Thermal Shock Resistance Index

27
40

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 scale60606070

Manufacturing and finishing

Capability60606070
Default condition——
Relative cost$ Budget$$ Standard
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.

6060 vs 6070 — frequently asked

Is 6070 stronger than 6060?

Yes. 6070 has a typical yield strength of 350 MPa (50.8 ksi) against 170 MPa (24.7 ksi) for 6060 — about 106% more. Tensile strength is 380 MPa (55.1 ksi) vs 215 MPa (31.2 ksi).

Which is cheaper, 6060 or 6070?

6060 is the lower-cost material: it sits in the budget tier ($) while 6070 is standard ($$). 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 6070?

6070, by a small margin. Both rate good for machinability — 60/100 against 55/100 for 6060; for welding the order is 6060 first (excellent, 90/100) then 6070 (very good, 70/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in 6060 and 6070 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.