Aluminum 443-T5 vs 443-T6
Aluminum · 443 temper comparison
443-T5 and 443-T6 are two conditions of the same aluminum grade, 443: T5 (cooled from hot working and artificially aged) versus T6 (solution heat treated and artificially aged). The chemistry is identical, so every difference below comes from the condition. 443-T6 is the stronger of the two: yield strength 70 MPa (10.2 ksi) against 60 MPa (8.7 ksi) for 443-T5, about 17% more; tensile strength follows at 150 MPa (21.8 ksi) vs 135 MPa (19.6 ksi). In exchange, 443-T5 is the more ductile: elongation 7% versus 6% for 443-T6, and 443-T6 is harder (45 HB vs 42 HB).
443-T5Choose it when the part is bent, formed or impact-loaded.
443-T6Choose it when strength drives the design.
443-T5 vs 443-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 71 GPa10.3 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Fracture Toughness (K_IC) 17 MPa·√m15.5 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 2.69 g/cm³0.1 lb/in³ · Melting Point (Solidus) 577°C1,071 °F · Liquidus Temperature 632°C1,170 °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) 22.1 µm/m·K12.3 µin/in·°F · Latent Heat of Fusion 389 J/g167 BTU/lb · Max Service Temperature (continuous) 200°C392 °F · Min Service Temperature -195°C-319 °F
Electrical
Conductivity and insulation.
Electrical Resistivity
Same in both: Electrical Conductivity 38 % IACS
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 58 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Weldability 85 / 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 kg CO₂/kg · Embodied Water 1,200 L/kg144 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.
443-T5 vs 443-T6 — frequently asked
Is 443-T6 stronger than 443-T5?
Yes. 443-T6 has a typical yield strength of 70 MPa (10.2 ksi) against 60 MPa (8.7 ksi) for 443-T5 — about 17% more. Tensile strength is 150 MPa (21.8 ksi) vs 135 MPa (19.6 ksi).
Which condition does FabDigit quote by default, T5 or T6?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
When should I choose 443-T5 over 443-T6?
Pick 443-T5 when the part is bent, formed or impact-loaded. Pick 443-T6 when strength drives the design.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 443-T5 and 443-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.