P100Gr/6061Al QI vs P100Gr/6061Al T6
Composite · P100Gr/6061Al grade comparison
P100Gr/6061Al QI and P100Gr/6061Al T6 are two grades of the same composite grade, P100Gr/6061Al: QI (quasi-isotropic [0/±45/90] laminate) versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. P100Gr/6061Al T6 is the stronger of the two: tensile strength 660 MPa (95.7 ksi) against 250 MPa (36.3 ksi) for P100Gr/6061Al QI, about 164% more. In exchange, P100Gr/6061Al QI is the more ductile: elongation 0.4% versus 0.25% for P100Gr/6061Al T6. P100Gr/6061Al T6 is stiffer (320 GPa vs 130 GPa) and P100Gr/6061Al QI runs hotter in service (350°C vs 250°C continuous).
P100Gr/6061Al QIChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
P100Gr/6061Al T6Choose it when strength drives the design.
P100Gr/6061Al QI vs P100Gr/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.
P100Gr/6061Al QIP100Gr/6061Al T6
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Elongation at Break
Compressive Strength
Flexural Strength
Flexural Modulus
Shear Strength
Fracture Toughness (K_IC)
Same in both: Shear Modulus 30 GPa4.4 Msi · Poisson's Ratio 0.3 · Compressive Modulus 310 GPa45 Msi
Physical
Density and transition temperatures.
Same in both: Density 2.5 g/cm³0.09 lb/in³
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 820 J/kg·K0.2 BTU/lb·°F · Min Service Temperature -269°C-452 °F · Max Service Temperature (short-term) 450°C842 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: UV / Weathering Resistance 92 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Polishability 35 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 480 MJ/kg206,363 BTU/lb · Embodied Carbon (primary production) 32 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.
P100Gr/6061Al QI vs P100Gr/6061Al T6 — frequently asked
Is P100Gr/6061Al T6 stronger than P100Gr/6061Al QI?
Yes. P100Gr/6061Al T6 has a typical tensile strength of 660 MPa (95.7 ksi) against 250 MPa (36.3 ksi) for P100Gr/6061Al QI — about 164% more.
Which grade does FabDigit quote by default, QI or T6?
UD45-F is the default P100Gr/6061Al condition in the FabDigit quote flow (neither QI 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 P100Gr/6061Al QI over P100Gr/6061Al T6?
Pick P100Gr/6061Al QI when the part is bent, formed or impact-loaded, or when the part sees heat. Pick P100Gr/6061Al T6 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in P100Gr/6061Al QI and P100Gr/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.