Aluminum EN AC-46400 F-K vs EN AC-46400-T5
Aluminum · EN AC-46400 temper comparison
EN AC-46400 F-K and EN AC-46400-T5 are two conditions of the same aluminum grade, EN AC-46400: F-K (f) versus T5 (cooled from hot working and artificially aged). The chemistry is identical, so every difference below comes from the condition. EN AC-46400-T5 is the stronger of the two: yield strength 170 MPa (24.7 ksi) against 110 MPa (16 ksi) for EN AC-46400 F-K, about 55% more; tensile strength follows at 215 MPa (31.2 ksi) vs 185 MPa (26.8 ksi). In exchange, EN AC-46400 F-K is the more ductile: elongation 1.5% versus 1% for EN AC-46400-T5, and EN AC-46400-T5 is harder (90 HB vs 75 HB).
EN AC-46400 F-KChoose it when the part is bent, formed or impact-loaded.
EN AC-46400-T5Choose it when strength drives the design.
EN AC-46400 F-K vs EN AC-46400-T5: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 75 GPa10.9 Msi · Shear Modulus 28 GPa4.1 Msi · Bulk Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33 · Compressive Strength 170 MPa24.7 ksi · Fracture Toughness (K_IC) 16 MPa·√m14.6 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 2.75 g/cm³0.1 lb/in³ · Melting Point (Solidus) 520°C968 °F · Liquidus Temperature 595°C1,103 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 125 W/m·K72.2 BTU/hr·ft·°F · Specific Heat Capacity 960 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21 µm/m·K11.7 µin/in·°F · Latent Heat of Fusion 425 J/g183 BTU/lb · Min Service Temperature -100°C-148 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 31 % IACS · Electrical Resistivity 5.6×10⁻⁸ Ω·m2.2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.78 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 88 / 100 · Brazeability / Solderability 25 / 100 · Polishability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 150 MJ/kg64,488 BTU/lb · Embodied Carbon (primary production) 9.5 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 70%
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.
EN AC-46400 F-K vs EN AC-46400-T5 — frequently asked
Is EN AC-46400-T5 stronger than EN AC-46400 F-K?
Yes. EN AC-46400-T5 has a typical yield strength of 170 MPa (24.7 ksi) against 110 MPa (16 ksi) for EN AC-46400 F-K — about 55% more. Tensile strength is 215 MPa (31.2 ksi) vs 185 MPa (26.8 ksi).
Which condition does FabDigit quote by default, F-K or T5?
F is the default EN AC-46400 condition in the FabDigit quote flow (neither F-K nor T5). 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.
Which is easier to machine, EN AC-46400 F-K or EN AC-46400-T5?
EN AC-46400-T5, by a small margin. Both rate good for machinability — 60/100 against 55/100 for EN AC-46400 F-K; for welding the order is EN AC-46400 F-K first (fair, 40/100) then EN AC-46400-T5 (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in EN AC-46400 F-K and EN AC-46400-T5 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.