Precious Metal BAu-2-AB vs BAu-2-ANN
Precious Metal · BAu-2 temper comparison
BAu-2-AB and BAu-2-ANN are two conditions of the same precious metal grade, BAu-2: AB (as built (as printed)) versus ANN (annealed). The chemistry is identical, so every difference below comes from the condition. BAu-2-ANN is the stronger of the two: yield strength 200 MPa (29 ksi) against 180 MPa (26.1 ksi) for BAu-2-AB, about 11% more; tensile strength follows at 380 MPa (55.1 ksi) vs 340 MPa (49.3 ksi). BAu-2-ANN is the more ductile: elongation 30% versus 20% for BAu-2-AB.
BAu-2-ANNChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
BAu-2-AB vs BAu-2-ANN: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all precious metal 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 precious metal 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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 90 GPa13.1 Msi · Shear Modulus 33 GPa4.8 Msi · Bulk Modulus 150 GPa21.8 Msi · Poisson's Ratio 0.38
Physical
Density and transition temperatures.
Same in both: Density 15.9 g/cm³0.57 lb/in³ · Melting Point (Solidus) 889°C1,632 °F · Liquidus Temperature 889°C1,632 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 50 W/m·K28.9 BTU/hr·ft·°F · Specific Heat Capacity 175 J/kg·K0.04 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.5 µm/m·K8.6 µin/in·°F · Latent Heat of Fusion 80 J/g34.4 BTU/lb · Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 14 % IACS · Electrical Resistivity 1.25×10⁻⁷ Ω·m4.92 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) 0.25 V · Corrosion Resistance 95 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Formability (cold)
Same in both: Machinability 35 / 100 · Machinability Rating (AISI 1212 = 100 %) 30% · Weldability 55 / 100 · Castability 80 / 100 · Brazeability / Solderability 98 / 100 · Polishability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 210,000 MJ/kg9.03×10⁷ BTU/lb · Embodied Carbon (primary production) 15,000 kg CO₂/kg · Embodied Water 200,000 L/kg23,965 gal/lb · Typical Recycled Content 85%
Strength versus weight
Yield strength against density for every precious metal grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
BAu-2-AB vs BAu-2-ANN — frequently asked
Is BAu-2-ANN stronger than BAu-2-AB?
Yes. BAu-2-ANN has a typical yield strength of 200 MPa (29 ksi) against 180 MPa (26.1 ksi) for BAu-2-AB — about 11% more. Tensile strength is 380 MPa (55.1 ksi) vs 340 MPa (49.3 ksi).
Which condition does FabDigit quote by default, AB or ANN?
ANN is the default BAu-2 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.
When should I choose BAu-2-AB over BAu-2-ANN?
Pick BAu-2-ANN when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in BAu-2-AB and BAu-2-ANN 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.