Aluminum BAlSi-9-H14 vs BAlSi-9-O
Aluminum · BAlSi-9 temper comparison
BAlSi-9-H14 and BAlSi-9-O are two conditions of the same aluminum grade, BAlSi-9: H14 (strain hardened, half hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. BAlSi-9-H14 is the stronger of the two: yield strength 150 MPa (21.8 ksi) against 70 MPa (10.2 ksi) for BAlSi-9-O, about 114% more; tensile strength follows at 195 MPa (28.3 ksi) vs 150 MPa (21.8 ksi). In exchange, BAlSi-9-O is the more ductile: elongation 4% versus 2% for BAlSi-9-H14, and BAlSi-9-H14 is harder (70 HB vs 50 HB). BAlSi-9-O runs hotter in service (150°C vs 120°C continuous). On the shop floor, BAlSi-9-H14 machines more easily (fair vs poor).
BAlSi-9-H14Choose it when strength drives the design, or when the part is machined in volume.
BAlSi-9-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
BAlSi-9-H14 vs BAlSi-9-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, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 71 GPa10.3 Msi · Shear Modulus 26.5 GPa3.8 Msi · Bulk Modulus 70 GPa10.2 Msi · Poisson's Ratio 0.33 · Reduction in Area 3% · Compressive Strength 95 MPa13.8 ksi · Charpy V-Notch Impact (RT) 3 J2.2 ft·lbf
Physical
Density and transition temperatures.
Same in both: Density 2.68 g/cm³0.1 lb/in³ · Melting Point (Solidus) 559°C1,038 °F · Liquidus Temperature 596°C1,105 °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) 20.5 µm/m·K11.4 µin/in·°F · Latent Heat of Fusion 500 J/g215 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.83 V · Corrosion Resistance 45 / 100
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 30 / 100 · Castability 90 / 100 · Brazeability / Solderability 95 / 100 · Polishability 40 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 205 MJ/kg88,134 BTU/lb · Embodied Carbon (primary production) 12 kg CO₂/kg · Embodied Water 1,150 L/kg138 gal/lb · Typical Recycled Content 10%
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.
BAlSi-9-H14 vs BAlSi-9-O — frequently asked
Is BAlSi-9-H14 stronger than BAlSi-9-O?
Yes. BAlSi-9-H14 has a typical yield strength of 150 MPa (21.8 ksi) against 70 MPa (10.2 ksi) for BAlSi-9-O — about 114% more. Tensile strength is 195 MPa (28.3 ksi) vs 150 MPa (21.8 ksi).
Which condition does FabDigit quote by default, H14 or O?
AS-BRAZED is the default BAlSi-9 condition in the FabDigit quote flow (neither H14 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, BAlSi-9-H14 or BAlSi-9-O?
BAlSi-9-H14. Its machinability rates fair (40/100) against poor (30/100) for BAlSi-9-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in BAlSi-9-H14 and BAlSi-9-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.