Precious Metal Pt950-O vs Pt950 Stress Relieved
Precious Metal · Pt950 temper comparison
Pt950-O and Pt950 Stress Relieved are two conditions of the same precious metal grade, Pt950: O (annealed) versus Stress Relieved. The chemistry is identical, so every difference below comes from the condition. Pt950 Stress Relieved is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 130 MPa (18.9 ksi) for Pt950-O, about 92% more; tensile strength follows at 400 MPa (58 ksi) vs 310 MPa (45 ksi). In exchange, Pt950-O is the more ductile: elongation 35% versus 20% for Pt950 Stress Relieved, and Pt950 Stress Relieved is harder (142 HB vs 105 HB). Pt950-O runs hotter in service (1,200°C vs 600°C continuous).
Pt950-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pt950 Stress RelievedChoose it when strength drives the design.
Pt950-O vs Pt950 Stress Relieved: 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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 172 GPa24.9 Msi · Shear Modulus 62 GPa9 Msi · Bulk Modulus 235 GPa34.1 Msi · Poisson's Ratio 0.39
Physical
Density and transition temperatures.
Same in both: Density 20.1 g/cm³0.73 lb/in³ · Melting Point (Solidus) 1,755°C3,191 °F · Liquidus Temperature 1,780°C3,236 °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 133 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 9 µm/m·K5 µin/in·°F · Latent Heat of Fusion 110 J/g47.3 BTU/lb · Min Service Temperature -250°C-418 °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) 0.3 V · Corrosion Resistance 100 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 30% · Castability 70 / 100 · Brazeability / Solderability 85 / 100 · Polishability 95 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 250,000 MJ/kg1.07×10⁸ BTU/lb · Embodied Carbon (primary production) 16,000 kg CO₂/kg · Embodied Water 200,000 L/kg23,965 gal/lb · Typical Recycled Content 35%
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.
Pt950-O vs Pt950 Stress Relieved — frequently asked
Is Pt950 Stress Relieved stronger than Pt950-O?
Yes. Pt950 Stress Relieved has a typical yield strength of 250 MPa (36.3 ksi) against 130 MPa (18.9 ksi) for Pt950-O — about 92% more. Tensile strength is 400 MPa (58 ksi) vs 310 MPa (45 ksi).
Which condition does FabDigit quote by default, O or Stress Relieved?
O is the default Pt950 condition in the FabDigit quote flow. 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, Pt950-O or Pt950 Stress Relieved?
Pt950 Stress Relieved. Its machinability rates fair (35/100) against poor (30/100) for Pt950-O; for welding the order is Pt950-O first (excellent, 85/100) then Pt950 Stress Relieved (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt950-O and Pt950 Stress Relieved 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.