B/6061Al F vs B/6061Al T6
Composite · B/6061Al grade comparison
B/6061Al F and B/6061Al T6 are two grades of the same composite grade, B/6061Al: F (as fabricated) versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. B/6061Al T6 is the stronger of the two: yield strength 1,030 MPa (149 ksi) against 720 MPa (104 ksi) for B/6061Al F, about 43% more; tensile strength follows at 1,450 MPa (210 ksi) vs 1,330 MPa (193 ksi). In exchange, B/6061Al F is the more ductile: elongation 0.85% versus 0.6% for B/6061Al T6. B/6061Al F runs hotter in service (300°C vs 175°C continuous) and B/6061Al F conducts heat better (110 W/m·K vs 95 W/m·K).
B/6061Al FChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
B/6061Al T6Choose it when strength drives the design.
B/6061Al F vs B/6061Al T6: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all composite 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 composite 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.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Flexural Strength
Flexural Modulus
Shear Strength
Fracture Toughness (K_IC)
Same in both: Shear Modulus 48 GPa7 Msi · Poisson's Ratio 0.24 · Compressive Modulus 215 GPa31.2 Msi
Physical
Density and transition temperatures.
Same in both: Density 2.65 g/cm³0.1 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 950 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 6.2 µm/m·K3.4 µin/in·°F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 95 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Polishability 30 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 900 MJ/kg386,931 BTU/lb · Embodied Carbon (primary production) 60 kg CO₂/kg · Typical Recycled Content 0%
Strength versus weight
Yield strength against density for every composite grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
B/6061Al F vs B/6061Al T6 — frequently asked
Is B/6061Al T6 stronger than B/6061Al F?
Yes. B/6061Al T6 has a typical yield strength of 1,030 MPa (149 ksi) against 720 MPa (104 ksi) for B/6061Al F — about 43% more. Tensile strength is 1,450 MPa (210 ksi) vs 1,330 MPa (193 ksi).
Which grade does FabDigit quote by default, F or T6?
UD-50 is the default B/6061Al condition in the FabDigit quote flow (neither F nor T6). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
When should I choose B/6061Al F over B/6061Al T6?
Pick B/6061Al F when the part is bent, formed or impact-loaded, or when the part sees heat. Pick B/6061Al T6 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in B/6061Al F and B/6061Al 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.