Precious Metal BVAu-2-ANN vs BVAu-2-HD
Precious Metal · BVAu-2 temper comparison
BVAu-2-ANN and BVAu-2-HD are two conditions of the same precious metal grade, BVAu-2: ANN (annealed) versus HD (hard drawn / as-rolled). The chemistry is identical, so every difference below comes from the condition. BVAu-2-HD is the stronger of the two: yield strength 520 MPa (75.4 ksi) against 200 MPa (29 ksi) for BVAu-2-ANN, about 160% more; tensile strength follows at 620 MPa (89.9 ksi) vs 400 MPa (58 ksi). In exchange, BVAu-2-ANN is the more ductile: elongation 25% versus 4% for BVAu-2-HD, and BVAu-2-HD is harder (195 HB vs 130 HB). BVAu-2-ANN runs hotter in service (400°C vs 200°C continuous). On the shop floor, BVAu-2-HD machines more easily (50 vs 40 out of 100).
BVAu-2-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
BVAu-2-HDChoose it when strength drives the design, or when the part is machined in volume.
BVAu-2-ANN vs BVAu-2-HD: 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 92 GPa13.3 Msi · Shear Modulus 34 GPa4.9 Msi · Bulk Modulus 150 GPa21.8 Msi · Poisson's Ratio 0.42
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 155 J/kg·K0.04 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 15.9 µm/m·K8.8 µin/in·°F · Latent Heat of Fusion 90 J/g38.7 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 93 / 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 85 / 100 · Brazeability / Solderability 98 / 100 · Polishability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200,000 MJ/kg8.6×10⁷ BTU/lb · Embodied Carbon (primary production) 14,000 kg CO₂/kg · Embodied Water 200,000 L/kg23,965 gal/lb · Typical Recycled Content 70%
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.
BVAu-2-ANN vs BVAu-2-HD — frequently asked
Is BVAu-2-HD stronger than BVAu-2-ANN?
Yes. BVAu-2-HD has a typical yield strength of 520 MPa (75.4 ksi) against 200 MPa (29 ksi) for BVAu-2-ANN — about 160% more. Tensile strength is 620 MPa (89.9 ksi) vs 400 MPa (58 ksi).
Which condition does FabDigit quote by default, ANN or HD?
ANN is the default BVAu-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, BVAu-2-ANN or BVAu-2-HD?
BVAu-2-HD, by a small margin. Both rate fair for machinability — 50/100 against 40/100 for BVAu-2-ANN; for welding the order is BVAu-2-ANN first (good, 60/100) then BVAu-2-HD (good, 55/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in BVAu-2-ANN and BVAu-2-HD 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.