Precious Metal Pt95W5-O vs Pt95W5 Spring
Precious Metal · Pt95W5 temper comparison
Pt95W5-O and Pt95W5 Spring are two conditions of the same precious metal grade, Pt95W5: O (annealed) versus Spring (spring hard). The chemistry is identical, so every difference below comes from the condition. Pt95W5 Spring is the stronger of the two: yield strength 880 MPa (128 ksi) against 190 MPa (27.6 ksi) for Pt95W5-O, about 4.6 times as much; tensile strength follows at 960 MPa (139 ksi) vs 420 MPa (60.9 ksi). In exchange, Pt95W5-O is the more ductile: elongation 30% versus 2% for Pt95W5 Spring, and Pt95W5 Spring is harder (261 HB vs 119 HB). Pt95W5-O runs hotter in service (700°C vs 300°C continuous). On the shop floor, Pt95W5 Spring machines more easily (fair vs poor) and Pt95W5-O welds better (very good vs fair).
Pt95W5-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pt95W5 SpringChoose it when strength drives the design, or when the part is machined in volume.
Pt95W5-O vs Pt95W5 Spring: 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)
Charpy V-Notch Impact (RT)
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 190 GPa27.6 Msi · Shear Modulus 70 GPa10.2 Msi · Bulk Modulus 285 GPa41.3 Msi · Poisson's Ratio 0.38
Physical
Density and transition temperatures.
Same in both: Density 21.3 g/cm³0.77 lb/in³ · Melting Point (Solidus) 1,790°C3,254 °F · Liquidus Temperature 1,840°C3,344 °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 132 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.9 µm/m·K4.9 µin/in·°F · Latent Heat of Fusion 113 J/g48.6 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).
Same in both: Galvanic Potential (seawater, vs SCE) 0.25 V · Corrosion Resistance 98 / 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 80 / 100 · Brazeability / Solderability 75 / 100 · Polishability 88 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 240,000 MJ/kg1.03×10⁸ BTU/lb · Embodied Carbon (primary production) 14,000 kg CO₂/kg · Typical Recycled Content 40%
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.
Pt95W5-O vs Pt95W5 Spring — frequently asked
Is Pt95W5 Spring stronger than Pt95W5-O?
Yes. Pt95W5 Spring has a typical yield strength of 880 MPa (128 ksi) against 190 MPa (27.6 ksi) for Pt95W5-O — about 4.6 times as much. Tensile strength is 960 MPa (139 ksi) vs 420 MPa (60.9 ksi).
Which condition does FabDigit quote by default, O or Spring?
Cast is the default Pt95W5 condition in the FabDigit quote flow (neither O nor Spring). 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, Pt95W5-O or Pt95W5 Spring?
Pt95W5 Spring. Its machinability rates fair (38/100) against poor (28/100) for Pt95W5-O; for welding the order is Pt95W5-O first (very good, 75/100) then Pt95W5 Spring (fair, 40/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt95W5-O and Pt95W5 Spring 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.