Aluminum 2007-T3 vs 2007-T4
Aluminum · 2007 temper comparison
2007-T3 and 2007-T4 are two conditions of the same aluminum grade, 2007: T3 (solution heat treated, cold worked and naturally aged) versus T4 (solution heat treated and naturally aged). The chemistry is identical, so every difference below comes from the condition. 2007-T3 is the stronger of the two: yield strength 300 MPa (43.5 ksi) against 250 MPa (36.3 ksi) for 2007-T4, about 20% more; tensile strength follows at 390 MPa (56.6 ksi) vs 370 MPa (53.7 ksi). In exchange, 2007-T4 is the more ductile: elongation 14% versus 10% for 2007-T3, and 2007-T3 is harder (115 HB vs 105 HB).
2007-T3Choose it when strength drives the design.
2007-T4Choose it when the part is bent, formed or impact-loaded.
2007-T3 vs 2007-T4: 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
Same in both: Elastic (Young's) Modulus 72 GPa10.4 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33 · Fracture Toughness (K_IC) 27 MPa·√m24.6 ksi·√in · Hardness, Rockwell B 65 HRB
Physical
Density and transition temperatures.
Same in both: Density 2.85 g/cm³0.1 lb/in³ · Melting Point (Solidus) 508°C946 °F · Liquidus Temperature 640°C1,184 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Same in both: Specific Heat Capacity 860 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23 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
Same in both: Electrical Resistivity 5.75×10⁻⁸ Ω·m2.26 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.68 V · Corrosion Resistance 30 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 300% · Weldability 15 / 100 · Castability 25 / 100 · Brazeability / Solderability 15 / 100 · Polishability 45 / 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 1,150 L/kg138 gal/lb · Typical Recycled Content 30%
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.
2007-T3 vs 2007-T4 — frequently asked
Is 2007-T3 stronger than 2007-T4?
Yes. 2007-T3 has a typical yield strength of 300 MPa (43.5 ksi) against 250 MPa (36.3 ksi) for 2007-T4 — about 20% more. Tensile strength is 390 MPa (56.6 ksi) vs 370 MPa (53.7 ksi).
Which condition does FabDigit quote by default, T3 or T4?
T3 is the default 2007 condition in the FabDigit quote flow. 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 2007-T3 over 2007-T4?
Pick 2007-T3 when strength drives the design. Pick 2007-T4 when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2007-T3 and 2007-T4 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.