Aluminum BAlSi-9 AS-BRAZED vs BAlSi-9-O
Aluminum · BAlSi-9 temper comparison
BAlSi-9 AS-BRAZED and BAlSi-9-O are two conditions of the same aluminum grade, BAlSi-9: AS-BRAZED versus O (annealed). The chemistry is identical, so every difference below comes from the condition. BAlSi-9 AS-BRAZED is the stronger of the two: yield strength 90 MPa (13.1 ksi) against 70 MPa (10.2 ksi) for BAlSi-9-O, about 29% more; tensile strength follows at 165 MPa (23.9 ksi) vs 150 MPa (21.8 ksi). In exchange, BAlSi-9-O is the more ductile: elongation 4% versus 2% for BAlSi-9 AS-BRAZED, and BAlSi-9 AS-BRAZED is harder (60 HB vs 50 HB).
BAlSi-9 AS-BRAZEDChoose it when strength drives the design.
BAlSi-9-OChoose it when the part is bent, formed or impact-loaded.
BAlSi-9 AS-BRAZED 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, 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 · Hardness, Rockwell B 25 HRB
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
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 · Max Service Temperature (continuous) 150°C302 °F · 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 AS-BRAZED vs BAlSi-9-O — frequently asked
Is BAlSi-9 AS-BRAZED stronger than BAlSi-9-O?
Yes. BAlSi-9 AS-BRAZED has a typical yield strength of 90 MPa (13.1 ksi) against 70 MPa (10.2 ksi) for BAlSi-9-O — about 29% more. Tensile strength is 165 MPa (23.9 ksi) vs 150 MPa (21.8 ksi).
Which condition does FabDigit quote by default, AS-BRAZED or O?
AS-BRAZED is the default BAlSi-9 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, BAlSi-9 AS-BRAZED or BAlSi-9-O?
BAlSi-9 AS-BRAZED. Its machinability rates fair (35/100) against poor (30/100) for BAlSi-9-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in BAlSi-9 AS-BRAZED 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.