Aluminum 7020-T4 vs 7020-T5
Aluminum · 7020 temper comparison
7020-T4 and 7020-T5 are two conditions of the same aluminum grade, 7020: T4 (solution heat treated and naturally aged) versus T5 (cooled from hot working and artificially aged). The chemistry is identical, so every difference below comes from the condition. 7020-T5 is the stronger of the two: yield strength 310 MPa (45 ksi) against 210 MPa (30.5 ksi) for 7020-T4, about 48% more; tensile strength follows at 360 MPa (52.2 ksi) vs 330 MPa (47.9 ksi). In exchange, 7020-T4 is the more ductile: elongation 16% versus 11% for 7020-T5, and 7020-T5 is harder (112 HB vs 92 HB).
7020-T4Choose it when the part is bent, formed or impact-loaded.
7020-T5Choose it when strength drives the design.
7020-T4 vs 7020-T5: 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 70 GPa10.2 Msi · Shear Modulus 26.4 GPa3.8 Msi · Bulk Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.78 g/cm³0.1 lb/in³ · Melting Point (Solidus) 605°C1,121 °F · Liquidus Temperature 650°C1,202 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 875 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.1 µm/m·K12.8 µin/in·°F · Latent Heat of Fusion 390 J/g168 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) -0.84 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 78 / 100 · Castability 25 / 100 · Brazeability / Solderability 20 / 100 · Polishability 55 / 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.
7020-T4 vs 7020-T5 — frequently asked
Is 7020-T5 stronger than 7020-T4?
Yes. 7020-T5 has a typical yield strength of 310 MPa (45 ksi) against 210 MPa (30.5 ksi) for 7020-T4 — about 48% more. Tensile strength is 360 MPa (52.2 ksi) vs 330 MPa (47.9 ksi).
Which condition does FabDigit quote by default, T4 or T5?
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, 7020-T4 or 7020-T5?
7020-T5, by a small margin. Both rate fair for machinability — 53/100 against 45/100 for 7020-T4.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 7020-T4 and 7020-T5 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.