Aluminum 2017-T3 vs 2017-T351
Aluminum · 2017 temper comparison
2017-T3 and 2017-T351 are two conditions of the same aluminum grade, 2017: T3 (solution heat treated, cold worked and naturally aged) versus T351 (T3, stress relieved by stretching). The chemistry is identical, so every difference below comes from the condition. 2017-T3 is the stronger of the two: yield strength 290 MPa (42.1 ksi) against 275 MPa (39.9 ksi) for 2017-T351, about 5% more. In exchange, 2017-T351 is the more ductile: elongation 20% versus 18% for 2017-T3.
2017-T3Choose it when strength drives the design.
2017-T351Choose it when the part is bent, formed or impact-loaded.
2017-T3 vs 2017-T351: 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
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 72.4 GPa10.5 Msi · Shear Modulus 27.2 GPa3.9 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.79 g/cm³0.1 lb/in³ · Melting Point (Solidus) 513°C955 °F · Liquidus Temperature 641°C1,186 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 134 W/m·K77.4 BTU/hr·ft·°F · Specific Heat Capacity 873 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.6 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Max Service Temperature (continuous) 150°C302 °F · Min Service Temperature -196°C-321 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 34 % IACS · Electrical Resistivity 5.07×10⁻⁸ Ω·m2 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.68 V · Corrosion Resistance 33 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Polishability
Same in both: Machinability Rating (AISI 1212 = 100 %) 70% · Weldability 20 / 100 · Castability 25 / 100 · Brazeability / Solderability 15 / 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.
2017-T3 vs 2017-T351 — frequently asked
Is 2017-T3 stronger than 2017-T351?
Yes. 2017-T3 has a typical yield strength of 290 MPa (42.1 ksi) against 275 MPa (39.9 ksi) for 2017-T351 — about 5% more. Tensile strength is 430 MPa (62.4 ksi) vs 425 MPa (61.6 ksi).
Which condition does FabDigit quote by default, T3 or T351?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
When should I choose 2017-T3 over 2017-T351?
Pick 2017-T3 when strength drives the design. Pick 2017-T351 when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2017-T3 and 2017-T351 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.