Aluminum 6011-O vs 6011-T6
Aluminum · 6011 temper comparison
6011-O and 6011-T6 are two conditions of the same aluminum grade, 6011: O (annealed) versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. 6011-T6 is the stronger of the two: yield strength 330 MPa (47.9 ksi) against 70 MPa (10.2 ksi) for 6011-O, about 4.7 times as much; tensile strength follows at 380 MPa (55.1 ksi) vs 150 MPa (21.8 ksi). In exchange, 6011-O is the more ductile: elongation 25% versus 12% for 6011-T6, and 6011-T6 is harder (110 HB vs 40 HB). 6011-O conducts heat better (185 W/m·K vs 165 W/m·K). On the shop floor, 6011-T6 machines more easily (very good vs fair).
6011-OChoose it when the part is bent, formed or impact-loaded.
6011-T6Choose it when strength drives the design, or when the part is machined in volume.
6011-O vs 6011-T6: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all aluminum grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Brinell
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 · Fatigue Strength (Endurance Limit) 105 MPa15.2 ksi · Fracture Toughness (K_IC) 30 MPa·√m27.3 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 2.72 g/cm³0.1 lb/in³ · Melting Point (Solidus) 585°C1,085 °F · Liquidus Temperature 650°C1,202 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 896 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.4 µm/m·K13 µin/in·°F · Latent Heat of Fusion 395 J/g170 BTU/lb · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 4.1×10⁻⁸ Ω·m1.61 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.77 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 190% · Brazeability / Solderability 35 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 35%
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.
6011-O vs 6011-T6 — frequently asked
Is 6011-T6 stronger than 6011-O?
Yes. 6011-T6 has a typical yield strength of 330 MPa (47.9 ksi) against 70 MPa (10.2 ksi) for 6011-O — about 4.7 times as much. Tensile strength is 380 MPa (55.1 ksi) vs 150 MPa (21.8 ksi).
Which condition does FabDigit quote by default, O or T6?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which is easier to machine, 6011-O or 6011-T6?
6011-T6. Its machinability rates very good (82/100) against fair (45/100) for 6011-O; for welding the order is 6011-O first (fair, 50/100) then 6011-T6 (fair, 45/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 6011-O and 6011-T6 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.