Aluminum 357-T6 vs 357-T62
Aluminum · 357 temper comparison
357-T6 and 357-T62 are two conditions of the same aluminum grade, 357: T6 (solution heat treated and artificially aged) 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 275 MPa (39.9 ksi) for 357-T6, about 13% more; tensile strength follows at 370 MPa (53.7 ksi) vs 330 MPa (47.9 ksi). In exchange, 357-T6 is the more ductile: elongation 5% versus 4% for 357-T62, and 357-T62 is harder (105 HB vs 90 HB).
357-T6Choose it when the part is bent, formed or impact-loaded.
357-T62Choose it when strength drives the design.
357-T6 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
Fatigue Strength (Endurance Limit)
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
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.
Machinability
Weldability
Formability (cold)
Same in both: 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-T6 vs 357-T62 — frequently asked
Is 357-T62 stronger than 357-T6?
Yes. 357-T62 has a typical yield strength of 310 MPa (45 ksi) against 275 MPa (39.9 ksi) for 357-T6 — about 13% more. Tensile strength is 370 MPa (53.7 ksi) vs 330 MPa (47.9 ksi).
Which condition does FabDigit quote by default, T6 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-T6 or 357-T62?
357-T6. 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-T6 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.