Aluminum 6463-T4 vs 6463-T6
Aluminum · 6463 temper comparison
6463-T4 and 6463-T6 are two conditions of the same aluminum grade, 6463: T4 (solution heat treated and naturally aged) versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. 6463-T6 is the stronger of the two: yield strength 214 MPa (31 ksi) against 90 MPa (13.1 ksi) for 6463-T4, about 138% more; tensile strength follows at 240 MPa (34.8 ksi) vs 175 MPa (25.4 ksi). In exchange, 6463-T4 is the more ductile: elongation 22% versus 12% for 6463-T6, and 6463-T6 is harder (74 HB vs 48 HB). 6463-T6 runs hotter in service (150°C vs 120°C continuous).
6463-T4Choose it when the part is bent, formed or impact-loaded.
6463-T6Choose it when strength drives the design, or when the part sees heat.
6463-T4 vs 6463-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
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 68.9 GPa10 Msi · Shear Modulus 25.8 GPa3.7 Msi · Bulk Modulus 68 GPa9.9 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.69 g/cm³0.1 lb/in³ · Melting Point (Solidus) 615°C1,139 °F · Liquidus Temperature 655°C1,211 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 900 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 393 J/g169 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Weldability 85 / 100 · Brazeability / Solderability 60 / 100 · Polishability 92 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 20%
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.
6463-T4 vs 6463-T6 — frequently asked
Is 6463-T6 stronger than 6463-T4?
Yes. 6463-T6 has a typical yield strength of 214 MPa (31 ksi) against 90 MPa (13.1 ksi) for 6463-T4 — about 138% more. Tensile strength is 240 MPa (34.8 ksi) vs 175 MPa (25.4 ksi).
Which condition does FabDigit quote by default, T4 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, 6463-T4 or 6463-T6?
6463-T6, by a small margin. Both rate fair for machinability — 52/100 against 45/100 for 6463-T4.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 6463-T4 and 6463-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.