Aluminum 357-T61 vs 357-T62
Aluminum · 357 temper comparison
357-T61 and 357-T62 are two conditions of the same aluminum grade, 357: T61 (T6 variant, underaged) versus T62 (T6, heat treated by the user). The chemistry is identical, so every difference below comes from the condition. 357-T62 is the stronger of the two: yield strength 310 MPa (45 ksi) against 290 MPa (42.1 ksi) for 357-T61, about 7% more. In exchange, 357-T61 is the more ductile: elongation 5% versus 4% for 357-T62.
357-T61Choose it when the part is bent, formed or impact-loaded.
357-T62Choose it when strength drives the design.
357-T61 vs 357-T62: 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
Fracture Toughness (K_IC)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 72 GPa10.4 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Fatigue Strength (Endurance Limit) 95 MPa13.8 ksi
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.
Thermal Conductivity
Same in both: 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 · 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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Same in both: Machinability 70 / 100 · Castability 92 / 100 · Brazeability / Solderability 30 / 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 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.
357-T61 vs 357-T62 — frequently asked
Is 357-T62 stronger than 357-T61?
Yes. 357-T62 has a typical yield strength of 310 MPa (45 ksi) against 290 MPa (42.1 ksi) for 357-T61 — about 7% more. Tensile strength is 370 MPa (53.7 ksi) vs 360 MPa (52.2 ksi).
Which condition does FabDigit quote by default, T61 or T62?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which welds better, 357-T61 or 357-T62?
357-T61. Its weldability rates excellent (85/100) against very good (80/100) for 357-T62.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 357-T61 and 357-T62 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.