Aluminum 1080A-H12 vs 1080A-O
Aluminum · 1080A temper comparison
1080A-H12 and 1080A-O are two conditions of the same aluminum grade, 1080A: H12 (strain hardened, quarter hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 1080A-H12 is the stronger of the two: yield strength 70 MPa (10.2 ksi) against 20 MPa (2.9 ksi) for 1080A-O, about 3.5 times as much; tensile strength follows at 85 MPa (12.3 ksi) vs 70 MPa (10.2 ksi). In exchange, 1080A-O is the more ductile: elongation 40% versus 12% for 1080A-H12, and 1080A-H12 is harder (24 HB vs 19 HB). 1080A-O runs hotter in service (200°C vs 120°C continuous).
1080A-H12Choose it when strength drives the design.
1080A-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1080A-H12 vs 1080A-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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Same in both: Elastic (Young's) Modulus 69 GPa10 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 75 GPa10.9 Msi · Poisson's Ratio 0.33 · Hardness, Vickers 21 HV
Physical
Density and transition temperatures.
Same in both: Density 2.7 g/cm³0.1 lb/in³ · Melting Point (Solidus) 646°C1,195 °F · Liquidus Temperature 657°C1,215 °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 900 J/kg·K0.21 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.5 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 397 J/g171 BTU/lb · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Same in both: Electrical Resistivity 2.78×10⁻⁸ Ω·m1.09 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.84 V · Corrosion Resistance 80 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 92 / 100 · Castability 35 / 100 · Brazeability / Solderability 60 / 100 · Polishability 95 / 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 2%
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.
1080A-H12 vs 1080A-O — frequently asked
Is 1080A-H12 stronger than 1080A-O?
Yes. 1080A-H12 has a typical yield strength of 70 MPa (10.2 ksi) against 20 MPa (2.9 ksi) for 1080A-O — about 3.5 times as much. Tensile strength is 85 MPa (12.3 ksi) vs 70 MPa (10.2 ksi).
Which condition does FabDigit quote by default, H12 or O?
O is the default 1080A condition in the FabDigit quote flow. 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, 1080A-H12 or 1080A-O?
1080A-H12, by a small margin. Both rate poor for machinability — 25/100 against 20/100 for 1080A-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1080A-H12 and 1080A-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.