Precious Metal 830 Silver vs Britannia Silver (958)
Precious Metal · grade comparison
Precious Metal 830 Silver and Britannia Silver (958) are both precious metal grades. 830 Silver is the stronger of the two: yield strength 105 MPa (15.2 ksi) against 60 MPa (8.7 ksi) for Britannia Silver (958), about 75% more; tensile strength follows at 300 MPa (43.5 ksi) vs 240 MPa (34.8 ksi). In exchange, Britannia Silver (958) is the more ductile: elongation 48% versus 38% for 830 Silver, and 830 Silver is harder (62 HB vs 47 HB). 830 Silver runs hotter in service (300°C vs 200°C continuous) and Britannia Silver (958) conducts heat better (385 W/m·K vs 335 W/m·K). On the shop floor, 830 Silver machines more easily (good vs fair).
830 SilverChoose it when strength drives the design, or when the part sees heat.
Britannia Silver (958)Choose it when the part is bent, formed or impact-loaded.
830 Silver 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.
830 SilverBritannia Silver (958)
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Poisson's Ratio 0.37
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 779°C1,434 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Latent Heat of Fusion
Max Service Temperature (continuous)
Same in both: Thermal Expansion (CTE, 20–100 °C) 19 µm/m·K10.6 µin/in·°F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
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 %)
Formability (cold)
Castability
Polishability
Same in both: Weldability 70 / 100 · Brazeability / Solderability 95 / 100
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 | 830 Silver | Britannia Silver (958) |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
830 Silver vs Britannia Silver (958) — frequently asked
Is 830 Silver stronger than Britannia Silver (958)?
Yes. 830 Silver has a typical yield strength of 105 MPa (15.2 ksi) against 60 MPa (8.7 ksi) for Britannia Silver (958) — about 75% more. Tensile strength is 300 MPa (43.5 ksi) vs 240 MPa (34.8 ksi).
Which is cheaper, 830 Silver or Britannia Silver (958)?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 830 Silver or Britannia Silver (958)?
830 Silver. Its machinability rates good (55/100) against fair (45/100) for Britannia Silver (958).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 830 Silver 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.