Aluminum 2097-T351 vs 2097-T87
Aluminum · 2097 temper comparison
2097-T351 and 2097-T87 are two conditions of the same aluminum grade, 2097: T351 (T3, stress relieved by stretching) versus T87 (T8 with 7 % cold work). The chemistry is identical, so every difference below comes from the condition. 2097-T87 is the stronger of the two: yield strength 470 MPa (68.2 ksi) against 295 MPa (42.8 ksi) for 2097-T351, about 59% more; tensile strength follows at 515 MPa (74.7 ksi) vs 405 MPa (58.7 ksi). In exchange, 2097-T351 is the more ductile: elongation 12% versus 7% for 2097-T87, and 2097-T87 is harder (150 HB vs 118 HB). 2097-T87 runs hotter in service (120°C vs 100°C continuous) and 2097-T87 conducts heat better (93 W/m·K vs 80 W/m·K).
2097-T351Choose it when the part is bent, formed or impact-loaded.
2097-T87Choose it when strength drives the design, or when the part sees heat.
2097-T351 vs 2097-T87: 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.
Elastic (Young's) Modulus
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: Shear Modulus 30 GPa4.4 Msi · Bulk Modulus 76 GPa11 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.62 g/cm³0.09 lb/in³ · Melting Point (Solidus) 560°C1,040 °F · Liquidus Temperature 643°C1,189 °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 880 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 21.4 µm/m·K11.9 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · Min Service Temperature -253°C-423 °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) -0.7 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Brazeability / Solderability 15 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 220 MJ/kg94,583 BTU/lb · Embodied Carbon (primary production) 14 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 5%
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.
2097-T351 vs 2097-T87 — frequently asked
Is 2097-T87 stronger than 2097-T351?
Yes. 2097-T87 has a typical yield strength of 470 MPa (68.2 ksi) against 295 MPa (42.8 ksi) for 2097-T351 — about 59% more. Tensile strength is 515 MPa (74.7 ksi) vs 405 MPa (58.7 ksi).
Which condition does FabDigit quote by default, T351 or T87?
T851 is the default 2097 condition in the FabDigit quote flow (neither T351 nor T87). 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, 2097-T351 or 2097-T87?
2097-T87, by a small margin. Both rate very good for machinability — 80/100 against 72/100 for 2097-T351; for welding the order is 2097-T351 first (poor, 25/100) then 2097-T87 (poor, 20/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2097-T351 and 2097-T87 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.