Precious Metal BAu-2-ANN vs BAu-2-H
Precious Metal · BAu-2 temper comparison
BAu-2-ANN and BAu-2-H are two conditions of the same precious metal grade, BAu-2: ANN (annealed) versus H (hardened). The chemistry is identical, so every difference below comes from the condition. BAu-2-H is the stronger of the two: yield strength 500 MPa (72.5 ksi) against 200 MPa (29 ksi) for BAu-2-ANN, about 150% more; tensile strength follows at 620 MPa (89.9 ksi) vs 380 MPa (55.1 ksi). In exchange, BAu-2-ANN is the more ductile: elongation 30% versus 4% for BAu-2-H, and BAu-2-H is harder (198 HB vs 138 HB). BAu-2-ANN runs hotter in service (400°C vs 200°C continuous).
BAu-2-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
BAu-2-HChoose it when strength drives the design.
BAu-2-ANN vs BAu-2-H: 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.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: 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 · Min Service Temperature -269°C-452 °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) 0.25 V · Corrosion Resistance 95 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: 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-ANN vs BAu-2-H — frequently asked
Is BAu-2-H stronger than BAu-2-ANN?
Yes. BAu-2-H has a typical yield strength of 500 MPa (72.5 ksi) against 200 MPa (29 ksi) for BAu-2-ANN — about 150% more. Tensile strength is 620 MPa (89.9 ksi) vs 380 MPa (55.1 ksi).
Which condition does FabDigit quote by default, ANN or H?
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.
Which is easier to machine, BAu-2-ANN or BAu-2-H?
BAu-2-H, by a small margin. Both rate fair for machinability — 42/100 against 35/100 for BAu-2-ANN; for welding the order is BAu-2-ANN first (good, 55/100) then BAu-2-H (fair, 50/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in BAu-2-ANN and BAu-2-H 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.