Aluminum A356.2-F vs A356.2-T61
Aluminum · A356.2 temper comparison
A356.2-F and A356.2-T61 are two conditions of the same aluminum grade, A356.2: F (as fabricated) versus T61 (T6 variant, underaged). The chemistry is identical, so every difference below comes from the condition. A356.2-T61 is the stronger of the two: yield strength 207 MPa (30 ksi) against 83 MPa (12 ksi) for A356.2-F, about 149% more; tensile strength follows at 283 MPa (41 ksi) vs 159 MPa (23.1 ksi). A356.2-T61 is harder — 90 HB against 55 HB for A356.2-F — which matters for wear surfaces and threads. A356.2-F runs hotter in service (175°C vs 150°C continuous).
A356.2-FChoose it when the part sees heat.
A356.2-T61Choose it when strength drives the design, or when surface hardness matters.
A356.2-F vs A356.2-T61: 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)
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 72.4 GPa10.5 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 71 GPa10.3 Msi · Poisson's Ratio 0.33 · Elongation at Break 6% · Compressive Strength 190 MPa27.6 ksi · Fracture Toughness (K_IC) 22 MPa·√m20 ksi·√in
Physical
Density and transition temperatures.
Same in both: Density 2.68 g/cm³0.1 lb/in³ · Melting Point (Solidus) 557°C1,035 °F · Liquidus Temperature 613°C1,135 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 151 W/m·K87.2 BTU/hr·ft·°F · Specific Heat Capacity 963 J/kg·K0.23 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.5 µm/m·K11.9 µin/in·°F · Latent Heat of Fusion 389 J/g167 BTU/lb · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 4.3×10⁻⁸ Ω·m1.69 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 65 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Same in both: Machinability Rating (AISI 1212 = 100 %) 150% · Weldability 80 / 100 · Formability (cold) 10 / 100 · Castability 95 / 100 · Brazeability / Solderability 40 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 195 MJ/kg83,835 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 10%
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.
A356.2-F vs A356.2-T61 — frequently asked
Is A356.2-T61 stronger than A356.2-F?
Yes. A356.2-T61 has a typical yield strength of 207 MPa (30 ksi) against 83 MPa (12 ksi) for A356.2-F — about 149% more. Tensile strength is 283 MPa (41 ksi) vs 159 MPa (23.1 ksi).
Which condition does FabDigit quote by default, F or T61?
T6 is the default A356.2 condition in the FabDigit quote flow (neither F nor T61). 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.
Which is easier to machine, A356.2-F or A356.2-T61?
A356.2-T61, by a small margin. Both rate good for machinability — 63/100 against 55/100 for A356.2-F.
Ready to make it?
Upload a CAD file and FabDigit prices the part in A356.2-F and A356.2-T61 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.