Aluminum EN AC-51500-T5 vs EN AC-51500-T6
Aluminum · EN AC-51500 temper comparison
EN AC-51500-T5 and EN AC-51500-T6 are two conditions of the same aluminum grade, EN AC-51500: 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. Both yield at about 230 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (cooled from hot working and artificially aged versus solution heat treated and artificially aged). EN AC-51500-T6 is the more ductile: elongation 9% versus 8% for EN AC-51500-T5, and EN AC-51500-T6 is harder (100 HB vs 95 HB).
EN AC-51500-T6Choose it when the part is bent, formed or impact-loaded.
EN AC-51500-T5 vs EN AC-51500-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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 70 GPa10.2 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 69 GPa10 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.65 g/cm³0.1 lb/in³ · Melting Point (Solidus) 575°C1,067 °F · Liquidus Temperature 620°C1,148 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 24 µm/m·K13.3 µin/in·°F · Latent Heat of Fusion 395 J/g170 BTU/lb · Max Service Temperature (continuous) 120°C248 °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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.87 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 72 / 100 · Brazeability / Solderability 25 / 100 · Polishability 65 / 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 1,100 L/kg132 gal/lb · Typical Recycled Content 15%
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-51500-T5 vs EN AC-51500-T6 — frequently asked
What is the difference between EN AC-51500-T5 and EN AC-51500-T6?
EN AC-51500-T5 and EN AC-51500-T6 are two conditions of the same aluminum grade, EN AC-51500: 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. Both yield at about 230 MPa — the mechanical properties are the same, and the difference is in how the stock is processed and what it is certified to (cooled from hot working and artificially aged versus solution heat treated and artificially aged).
Which condition does FabDigit quote by default, T5 or T6?
F is the default EN AC-51500 condition in the FabDigit quote flow (neither T5 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 EN AC-51500-T5 over EN AC-51500-T6?
Pick EN AC-51500-T6 when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in EN AC-51500-T5 and EN AC-51500-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.