Aluminum MoldMAX Aluminum-T6 vs MoldMAX Aluminum-T7451
Aluminum · MoldMAX Aluminum temper comparison
MoldMAX Aluminum-T6 and MoldMAX Aluminum-T7451 are two conditions of the same aluminum grade, MoldMAX Aluminum: T6 (solution heat treated and artificially aged) versus T7451 (T74, stress relieved by stretching). The chemistry is identical, so every difference below comes from the condition. MoldMAX Aluminum-T6 is the stronger of the two: yield strength 505 MPa (73.2 ksi) against 430 MPa (62.4 ksi) for MoldMAX Aluminum-T7451, about 17% more; tensile strength follows at 570 MPa (82.7 ksi) vs 500 MPa (72.5 ksi). In exchange, MoldMAX Aluminum-T7451 is the more ductile: elongation 10% versus 7% for MoldMAX Aluminum-T6, and MoldMAX Aluminum-T6 is harder (150 HB vs 135 HB). MoldMAX Aluminum-T7451 runs hotter in service (150°C vs 120°C continuous) and MoldMAX Aluminum-T7451 conducts heat better (155 W/m·K vs 130 W/m·K).
MoldMAX Aluminum-T6Choose it when strength drives the design.
MoldMAX Aluminum-T7451Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
MoldMAX Aluminum-T6 vs MoldMAX Aluminum-T7451: 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.
MoldMAX Aluminum-T6MoldMAX Aluminum-T7451
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)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 71.7 GPa10.4 Msi · Shear Modulus 26.9 GPa3.9 Msi · Bulk Modulus 75 GPa10.9 Msi · Poisson's Ratio 0.33 · Reduction in Area 15% · Compressive Strength 505 MPa73.2 ksi · Hardness, Rockwell B 87 HRB
Physical
Density and transition temperatures.
Same in both: Density 2.81 g/cm³0.1 lb/in³ · Melting Point (Solidus) 477°C891 °F · Liquidus Temperature 635°C1,175 °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 960 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.6 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 5.2×10⁻⁸ Ω·m2.05 µΩ·in
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
Same in both: Machinability Rating (AISI 1212 = 100 %) 300% · Weldability 18 / 100 · Formability (cold) 20 / 100 · Brazeability / Solderability 12 / 100 · Polishability 80 / 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 25%
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.
MoldMAX Aluminum-T6 vs MoldMAX Aluminum-T7451 — frequently asked
Is MoldMAX Aluminum-T6 stronger than MoldMAX Aluminum-T7451?
Yes. MoldMAX Aluminum-T6 has a typical yield strength of 505 MPa (73.2 ksi) against 430 MPa (62.4 ksi) for MoldMAX Aluminum-T7451 — about 17% more. Tensile strength is 570 MPa (82.7 ksi) vs 500 MPa (72.5 ksi).
Which condition does FabDigit quote by default, T6 or T7451?
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 MoldMAX Aluminum-T6 over MoldMAX Aluminum-T7451?
Pick MoldMAX Aluminum-T6 when strength drives the design. Pick MoldMAX Aluminum-T7451 when the part is bent, formed or impact-loaded, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in MoldMAX Aluminum-T6 and MoldMAX Aluminum-T7451 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.