Aluminum 1100A-H12 vs 1100A-O
Aluminum · 1100A temper comparison
1100A-H12 and 1100A-O are two conditions of the same aluminum grade, 1100A: H12 (strain hardened, quarter hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 1100A-H12 is the stronger of the two: yield strength 105 MPa (15.2 ksi) against 34 MPa (4.93 ksi) for 1100A-O, about 3.1 times as much; tensile strength follows at 110 MPa (16 ksi) vs 90 MPa (13.1 ksi). In exchange, 1100A-O is the more ductile: elongation 40% versus 12% for 1100A-H12, and 1100A-H12 is harder (28 HB vs 23 HB). 1100A-O runs hotter in service (200°C vs 150°C continuous).
1100A-H12Choose it when strength drives the design.
1100A-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
1100A-H12 vs 1100A-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
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 69 GPa10 Msi · Shear Modulus 26 GPa3.8 Msi · Bulk Modulus 68 GPa9.9 Msi · Poisson's Ratio 0.33
Physical
Density and transition temperatures.
Same in both: Density 2.71 g/cm³0.1 lb/in³ · Melting Point (Solidus) 643°C1,189 °F · Liquidus Temperature 657°C1,215 °F
Thermal
How each material carries heat and how hot it can run.
Max Service Temperature (continuous)
Same in both: Thermal Conductivity 222 W/m·K128 BTU/hr·ft·°F · Specific Heat Capacity 904 J/kg·K0.22 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 23.6 µm/m·K13.1 µin/in·°F · Latent Heat of Fusion 397 J/g171 BTU/lb · Min Service Temperature -250°C-418 °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) -0.83 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 95 / 100 · Brazeability / Solderability 85 / 100 · Polishability 75 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200 MJ/kg85,985 BTU/lb · Embodied Carbon (primary production) 11.5 kg CO₂/kg · Embodied Water 1,150 L/kg138 gal/lb · Typical Recycled Content 30%
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.
1100A-H12 vs 1100A-O — frequently asked
Is 1100A-H12 stronger than 1100A-O?
Yes. 1100A-H12 has a typical yield strength of 105 MPa (15.2 ksi) against 34 MPa (4.93 ksi) for 1100A-O — about 3.1 times as much. Tensile strength is 110 MPa (16 ksi) vs 90 MPa (13.1 ksi).
Which condition does FabDigit quote by default, H12 or O?
H14 is the default 1100A condition in the FabDigit quote flow (neither H12 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, 1100A-H12 or 1100A-O?
1100A-H12, by a small margin. Both rate poor for machinability — 33/100 against 28/100 for 1100A-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 1100A-H12 and 1100A-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.