Precious Metal Britannia Silver (958)-F vs Britannia Silver (958)-H06
Precious Metal · Britannia Silver (958) temper comparison
Britannia Silver (958)-F and Britannia Silver (958)-H06 are two conditions of the same precious metal grade, Britannia Silver (958): F (as fabricated) versus H06 (extra hard). The chemistry is identical, so every difference below comes from the condition. Britannia Silver (958)-H06 is the stronger of the two: yield strength 370 MPa (53.7 ksi) against 85 MPa (12.3 ksi) for Britannia Silver (958)-F, about 4.4 times as much; tensile strength follows at 420 MPa (60.9 ksi) vs 215 MPa (31.2 ksi). In exchange, Britannia Silver (958)-F is the more ductile: elongation 22% versus 3% for Britannia Silver (958)-H06, and Britannia Silver (958)-H06 is harder (114 HB vs 52 HB). Britannia Silver (958)-F runs hotter in service (200°C vs 120°C continuous). On the shop floor, Britannia Silver (958)-H06 machines more easily (good vs fair) and Britannia Silver (958)-F welds better (65 vs 55 out of 100).
Britannia Silver (958)-FChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Britannia Silver (958)-H06Choose it when strength drives the design, or when the part is machined in volume.
Britannia Silver (958)-F vs Britannia Silver (958)-H06: 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.
Britannia Silver (958)-FBritannia Silver (958)-H06
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) 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: Shear Modulus 28 GPa4.1 Msi · Bulk Modulus 101 GPa14.6 Msi · Poisson's Ratio 0.37
Physical
Density and transition temperatures.
Same in both: Density 10.41 g/cm³0.38 lb/in³ · Melting Point (Solidus) 779°C1,434 °F · Liquidus Temperature 932°C1,710 °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 236 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 19 µm/m·K10.6 µin/in·°F · Latent Heat of Fusion 105 J/g45.1 BTU/lb · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) 0.12 V
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 78 / 100 · Brazeability / Solderability 95 / 100 · Polishability 97 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 1,500 MJ/kg644,885 BTU/lb · Embodied Carbon (primary production) 105 kg CO₂/kg · Embodied Water 2,500 L/kg300 gal/lb · Typical Recycled Content 55%
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.
Britannia Silver (958)-F vs Britannia Silver (958)-H06 — frequently asked
Is Britannia Silver (958)-H06 stronger than Britannia Silver (958)-F?
Yes. Britannia Silver (958)-H06 has a typical yield strength of 370 MPa (53.7 ksi) against 85 MPa (12.3 ksi) for Britannia Silver (958)-F — about 4.4 times as much. Tensile strength is 420 MPa (60.9 ksi) vs 215 MPa (31.2 ksi).
Which condition does FabDigit quote by default, F or H06?
O is the default Britannia Silver (958) condition in the FabDigit quote flow (neither F nor H06). 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, Britannia Silver (958)-F or Britannia Silver (958)-H06?
Britannia Silver (958)-H06. Its machinability rates good (60/100) against fair (48/100) for Britannia Silver (958)-F; for welding the order is Britannia Silver (958)-F first (good, 65/100) then Britannia Silver (958)-H06 (good, 55/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Britannia Silver (958)-F and Britannia Silver (958)-H06 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.