Aluminum 7010-O vs 7010-T73
Aluminum · 7010 temper comparison
7010-O and 7010-T73 are two conditions of the same aluminum grade, 7010: O (annealed) versus T73 (solution heat treated and overaged for stress-corrosion resistance). The chemistry is identical, so every difference below comes from the condition. 7010-T73 is the stronger of the two: yield strength 420 MPa (60.9 ksi) against 110 MPa (16 ksi) for 7010-O, about 3.8 times as much; tensile strength follows at 490 MPa (71.1 ksi) vs 240 MPa (34.8 ksi). In exchange, 7010-O is the more ductile: elongation 16% versus 10% for 7010-T73, and 7010-T73 is harder (140 HB vs 65 HB). 7010-O conducts heat better (175 W/m·K vs 157 W/m·K). On the shop floor, 7010-T73 machines more easily (very good vs fair).
7010-OChoose it when the part is bent, formed or impact-loaded.
7010-T73Choose it when strength drives the design, or when the part is machined in volume.
7010-O vs 7010-T73: 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Poisson's Ratio 0.33 · Reduction in Area 18% · Fatigue Strength (Endurance Limit) 150 MPa21.8 ksi
Physical
Density and transition temperatures.
Melting Point (Solidus)
Same in both: Density 2.82 g/cm³0.1 lb/in³ · Liquidus Temperature 635°C1,175 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Thermal Expansion (CTE, 20–100 °C)
Same in both: Specific Heat Capacity 860 J/kg·K0.21 BTU/lb·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Max Service Temperature (continuous) 150°C302 °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).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
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 18 / 100 · Castability 20 / 100 · Brazeability / Solderability 10 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 205 MJ/kg88,134 BTU/lb · Embodied Carbon (primary production) 12.5 kg CO₂/kg
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.
7010-O vs 7010-T73 — frequently asked
Is 7010-T73 stronger than 7010-O?
Yes. 7010-T73 has a typical yield strength of 420 MPa (60.9 ksi) against 110 MPa (16 ksi) for 7010-O — about 3.8 times as much. Tensile strength is 490 MPa (71.1 ksi) vs 240 MPa (34.8 ksi).
Which condition does FabDigit quote by default, O or T73?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which is easier to machine, 7010-O or 7010-T73?
7010-T73. Its machinability rates very good (70/100) against fair (50/100) for 7010-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 7010-O and 7010-T73 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.