Aluminum 2A25-H112 vs 2A25-O
Aluminum · 2A25 temper comparison
2A25-H112 and 2A25-O are two conditions of the same aluminum grade, 2A25: H112 (strain hardened from hot working only) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 2A25-H112 is the stronger of the two: yield strength 160 MPa (23.2 ksi) against 105 MPa (15.2 ksi) for 2A25-O, about 52% more; tensile strength follows at 265 MPa (38.4 ksi) vs 215 MPa (31.2 ksi). In exchange, 2A25-O is the more ductile: elongation 18% versus 13% for 2A25-H112, and 2A25-H112 is harder (80 HB vs 50 HB). 2A25-O runs hotter in service (200°C vs 170°C continuous).
2A25-H112Choose it when strength drives the design.
2A25-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
2A25-H112 vs 2A25-O: 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
Reduction in Area
Compressive Strength
Shear Strength
Fatigue Strength (Endurance Limit)
Fracture Toughness (K_IC)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 72 GPa10.4 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 75 GPa10.9 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.8 g/cm³0.1 lb/in³ · Melting Point (Solidus) 507°C945 °F · Liquidus Temperature 638°C1,180 °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) 22.5 µm/m·K12.5 µin/in·°F · Latent Heat of Fusion 390 J/g168 BTU/lb · 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) -0.69 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 20 / 100 · Brazeability / Solderability 15 / 100 · Polishability 55 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 14 kg CO₂/kg · Embodied Water 1,100 L/kg132 gal/lb · Typical Recycled Content 15%
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.
2A25-H112 vs 2A25-O — frequently asked
Is 2A25-H112 stronger than 2A25-O?
Yes. 2A25-H112 has a typical yield strength of 160 MPa (23.2 ksi) against 105 MPa (15.2 ksi) for 2A25-O — about 52% more. Tensile strength is 265 MPa (38.4 ksi) vs 215 MPa (31.2 ksi).
Which condition does FabDigit quote by default, H112 or O?
T6 is the default 2A25 condition in the FabDigit quote flow (neither H112 nor O). 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, 2A25-H112 or 2A25-O?
2A25-H112, by a small margin. Both rate fair for machinability — 52/100 against 45/100 for 2A25-O; for welding the order is 2A25-H112 first (poor, 30/100) then 2A25-O (poor, 25/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 2A25-H112 and 2A25-O 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.