Aluminum 2050-O vs 2050-T34
Aluminum · 2050 temper comparison
2050-O and 2050-T34 are two conditions of the same aluminum grade, 2050: O (annealed) versus T34 (solution heat treated, ~3–4 % stretched and naturally aged). The chemistry is identical, so every difference below comes from the condition. 2050-T34 is the stronger of the two: yield strength 305 MPa (44.2 ksi) against 135 MPa (19.6 ksi) for 2050-O, about 126% more; tensile strength follows at 430 MPa (62.4 ksi) vs 250 MPa (36.3 ksi). 2050-T34 is harder — 112 HB against 65 HB for 2050-O — which matters for wear surfaces and threads. 2050-O runs hotter in service (200°C vs 100°C continuous) and 2050-O conducts heat better (130 W/m·K vs 85 W/m·K). On the shop floor, 2050-T34 machines more easily (good vs fair) and 2050-O forms better (very good vs good).
2050-OChoose it when the part sees heat.
2050-T34Choose it when strength drives the design, or when surface hardness matters.
2050-O vs 2050-T34: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 76 GPa11 Msi · Shear Modulus 29 GPa4.2 Msi · Bulk Modulus 75 GPa10.9 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.7 g/cm³0.1 lb/in³ · Melting Point (Solidus) 560°C1,040 °F · Liquidus Temperature 645°C1,193 °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 870 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 22 µm/m·K12.2 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) -0.72 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: Castability 30 / 100 · Brazeability / Solderability 15 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 215 MJ/kg92,433 BTU/lb · Embodied Carbon (primary production) 13 kg CO₂/kg · Embodied Water 1,200 L/kg144 gal/lb · Typical Recycled Content 8%
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.
2050-O vs 2050-T34 — frequently asked
Is 2050-T34 stronger than 2050-O?
Yes. 2050-T34 has a typical yield strength of 305 MPa (44.2 ksi) against 135 MPa (19.6 ksi) for 2050-O — about 126% more. Tensile strength is 430 MPa (62.4 ksi) vs 250 MPa (36.3 ksi).
Which condition does FabDigit quote by default, O or T34?
T84 is the default 2050 condition in the FabDigit quote flow (neither O nor T34). 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, 2050-O or 2050-T34?
2050-T34. Its machinability rates good (62/100) against fair (45/100) for 2050-O; for welding the order is 2050-O first (fair, 40/100) then 2050-T34 (fair, 35/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2050-O and 2050-T34 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.