Precious Metal BAg-7 vs Britannia Silver (958)
Precious Metal · grade comparison
Precious Metal BAg-7 and Britannia Silver (958) are both precious metal grades. BAg-7 is the stronger of the two: yield strength 290 MPa (42.1 ksi) against 60 MPa (8.7 ksi) for Britannia Silver (958), about 4.8 times as much; tensile strength follows at 415 MPa (60.2 ksi) vs 240 MPa (34.8 ksi). In exchange, Britannia Silver (958) is the more ductile: elongation 48% versus 25% for BAg-7, and BAg-7 is harder (100 HV vs 50 HV). BAg-7 is lighter (9.5 g/cm³ vs 10.41 g/cm³ for Britannia Silver (958)) and BAg-7 is stiffer (85 GPa vs 76 GPa). On the shop floor, BAg-7 machines more easily (good vs fair) and Britannia Silver (958) welds better (very good vs poor).
BAg-7Choose it when strength drives the design, or when weight is the constraint.
Britannia Silver (958)Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
BAg-7 vs Britannia Silver (958): 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Rockwell B
Hardness, Vickers
Bulk Modulus
Fatigue Strength (Endurance Limit)
Hardness, Brinell
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
Min Service Temperature
Same in both: Max Service Temperature (continuous) 200°C392 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Galvanic Potential (seawater, vs SCE)
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Machinability Rating (AISI 1212 = 100 %)
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Embodied Water
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 | BAg-7 | Britannia Silver (958) |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
BAg-7 vs Britannia Silver (958) — frequently asked
Is BAg-7 stronger than Britannia Silver (958)?
Yes. BAg-7 has a typical yield strength of 290 MPa (42.1 ksi) against 60 MPa (8.7 ksi) for Britannia Silver (958) — about 4.8 times as much. Tensile strength is 415 MPa (60.2 ksi) vs 240 MPa (34.8 ksi).
Which is cheaper, BAg-7 or Britannia Silver (958)?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, BAg-7 or Britannia Silver (958)?
BAg-7. Its machinability rates good (55/100) against fair (45/100) for Britannia Silver (958); for welding the order is Britannia Silver (958) first (very good, 70/100) then BAg-7 (poor, 30/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in BAg-7 and Britannia Silver (958) 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.