Aluminum 7093-T651 vs 7093-T76
Aluminum · 7093 temper comparison
7093-T651 and 7093-T76 are two conditions of the same aluminum grade, 7093: T651 (T6, stress relieved by stretching) versus T76 (overaged for exfoliation-corrosion resistance). The chemistry is identical, so every difference below comes from the condition. 7093-T651 is the stronger of the two: yield strength 635 MPa (92.1 ksi) against 600 MPa (87 ksi) for 7093-T76, about 6% more; tensile strength follows at 690 MPa (100 ksi) vs 655 MPa (95 ksi). 7093-T651 is harder — 178 HB against 168 HB for 7093-T76 — which matters for wear surfaces and threads. 7093-T76 runs hotter in service (140°C vs 120°C continuous) and 7093-T76 conducts electricity better (35 % IACS vs 31 % IACS).
7093-T651Choose it when strength drives the design, or when surface hardness matters.
7093-T76Choose it when the part sees heat.
7093-T651 vs 7093-T76: 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
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 72 GPa10.4 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 75 GPa10.9 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.86 g/cm³0.1 lb/in³ · Melting Point (Solidus) 475°C887 °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 860 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.4 µm/m·K13 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
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.84 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 12 / 100 · Brazeability / Solderability 10 / 100 · Polishability 65 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 215 MJ/kg92,433 BTU/lb · Embodied Carbon (primary production) 14.5 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 5%
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.
7093-T651 vs 7093-T76 — frequently asked
Is 7093-T651 stronger than 7093-T76?
Yes. 7093-T651 has a typical yield strength of 635 MPa (92.1 ksi) against 600 MPa (87 ksi) for 7093-T76 — about 6% more. Tensile strength is 690 MPa (100 ksi) vs 655 MPa (95 ksi).
Which condition does FabDigit quote by default, T651 or T76?
T6 is the default 7093 condition in the FabDigit quote flow (neither T651 nor T76). 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 7093-T651 over 7093-T76?
Pick 7093-T651 when strength drives the design, or when surface hardness matters. Pick 7093-T76 when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 7093-T651 and 7093-T76 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.