Aluminum 444.0-F vs 444.0-T4
Aluminum · 444.0 temper comparison
444.0-F and 444.0-T4 are two conditions of the same aluminum grade, 444.0: F (as fabricated) versus T4 (solution heat treated and naturally aged). The chemistry is identical, so every difference below comes from the condition. 444.0-F is the stronger of the two: yield strength 75 MPa (10.9 ksi) against 62 MPa (8.99 ksi) for 444.0-T4, about 21% more. In exchange, 444.0-T4 is the more ductile: elongation 12% versus 8% for 444.0-F, and 444.0-F is harder (48 HB vs 44 HB).
444.0-FChoose it when strength drives the design.
444.0-T4Choose it when the part is bent, formed or impact-loaded.
444.0-F vs 444.0-T4: 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.
Yield Strength (0.2% offset)
Elongation at Break
Fracture Toughness (K_IC)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 71.5 GPa10.4 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Tensile Strength (Ultimate) 145 MPa21 ksi · Shear Strength 95 MPa13.8 ksi · Fatigue Strength (Endurance Limit) 55 MPa8 ksi
Physical
Density and transition temperatures.
Same in both: Density 2.68 g/cm³0.1 lb/in³ · Melting Point (Solidus) 557°C1,035 °F · Liquidus Temperature 613°C1,135 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 963 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.5 µm/m·K11.9 µin/in·°F · Latent Heat of Fusion 389 J/g167 BTU/lb · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 60 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Weldability 75 / 100 · Formability (cold) 20 / 100 · Castability 90 / 100 · Brazeability / Solderability 35 / 100 · Polishability 45 / 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 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.
444.0-F vs 444.0-T4 — frequently asked
Is 444.0-F stronger than 444.0-T4?
Yes. 444.0-F has a typical yield strength of 75 MPa (10.9 ksi) against 62 MPa (8.99 ksi) for 444.0-T4 — about 21% more. Tensile strength is 145 MPa (21 ksi) vs 145 MPa (21 ksi).
Which condition does FabDigit quote by default, F or T4?
T4 is the default 444.0 condition in the FabDigit quote flow. 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 444.0-F over 444.0-T4?
Pick 444.0-F when strength drives the design. Pick 444.0-T4 when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 444.0-F and 444.0-T4 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.