Precious Metal BVAu-2 vs BVAu-7
Precious Metal · grade comparison
Precious Metal BVAu-2 and BVAu-7 are both precious metal grades. Both yield at about 200 MPa — strength does not separate them. BVAu-2 is harder — 140 HV against 110 HV for BVAu-7 — which matters for wear surfaces and threads. BVAu-7 is lighter (12.2 g/cm³ vs 15.9 g/cm³ for BVAu-2) and BVAu-7 conducts heat better (65 W/m·K vs 55 W/m·K). On the shop floor, BVAu-2 welds better (good vs poor) and BVAu-2 forms better (excellent vs very good).
BVAu-2Choose it when surface hardness matters, or when it will be welded.
BVAu-7Choose it when weight is the constraint.
BVAu-2 vs BVAu-7: 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Yield Strength (0.2% offset) 200 MPa29 ksi · Elongation at Break 25%
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 15 % IACS · Electrical Resistivity 1.15×10⁻⁷ Ω·m4.53 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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.
Manufacturing and finishing
| Capability | BVAu-2 | BVAu-7 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
BVAu-2 vs BVAu-7 — frequently asked
What is the difference between BVAu-2 and BVAu-7?
Precious Metal BVAu-2 and BVAu-7 are both precious metal grades. Both yield at about 200 MPa — strength does not separate them. BVAu-2 is harder — 140 HV against 110 HV for BVAu-7 — which matters for wear surfaces and threads.
Which is cheaper, BVAu-2 or BVAu-7?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, BVAu-2 or BVAu-7?
BVAu-2, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for BVAu-7; for welding the order is BVAu-2 first (good, 60/100) then BVAu-7 (poor, 30/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in BVAu-2 and BVAu-7 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.