Aluminum A206.0-T4 vs A206.0-T7
Aluminum · A206.0 temper comparison
A206.0-T4 and A206.0-T7 are two conditions of the same aluminum grade, A206.0: T4 (solution heat treated and naturally aged) versus T7 (solution heat treated and overaged (stabilized)). The chemistry is identical, so every difference below comes from the condition. A206.0-T7 is the stronger of the two: yield strength 345 MPa (50 ksi) against 264 MPa (38.3 ksi) for A206.0-T4, about 31% more. In exchange, A206.0-T4 is the more ductile: elongation 17% versus 11.7% for A206.0-T7, and A206.0-T7 is harder (115 HB vs 95 HB). A206.0-T7 runs hotter in service (200°C vs 150°C continuous) and A206.0-T7 conducts heat better (138 W/m·K vs 121 W/m·K).
A206.0-T4Choose it when the part is bent, formed or impact-loaded.
A206.0-T7Choose it when strength drives the design, or when the part sees heat.
A206.0-T4 vs A206.0-T7: 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)
Fracture Toughness (K_IC)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Compressive Strength 270 MPa39.2 ksi
Physical
Density and transition temperatures.
Same in both: Density 2.8 g/cm³0.1 lb/in³ · Melting Point (Solidus) 570°C1,058 °F · Liquidus Temperature 650°C1,202 °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 921 J/kg·K0.22 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 22.5 µm/m·K12.5 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) -0.72 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 70% · Weldability 30 / 100 · Formability (cold) 10 / 100 · Castability 28 / 100 · Brazeability / Solderability 15 / 100 · Polishability 60 / 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 15%
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.
A206.0-T4 vs A206.0-T7 — frequently asked
Is A206.0-T7 stronger than A206.0-T4?
Yes. A206.0-T7 has a typical yield strength of 345 MPa (50 ksi) against 264 MPa (38.3 ksi) for A206.0-T4 — about 31% more. Tensile strength is 435 MPa (63.1 ksi) vs 430 MPa (62.4 ksi).
Which condition does FabDigit quote by default, T4 or T7?
T4 is the default A206.0 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 A206.0-T4 over A206.0-T7?
Pick A206.0-T4 when the part is bent, formed or impact-loaded. Pick A206.0-T7 when strength drives the design, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A206.0-T4 and A206.0-T7 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.