Precious Metal Pt90Ir10 vs Pt99.95
Precious Metal · grade comparison
Precious Metal Pt90Ir10 and Pt99.95 are both precious metal grades. Pt90Ir10 is the stronger of the two: yield strength 210 MPa (30.5 ksi) against 45 MPa (6.53 ksi) for Pt99.95, about 4.7 times as much; tensile strength follows at 380 MPa (55.1 ksi) vs 140 MPa (20.3 ksi). In exchange, Pt99.95 is the more ductile: elongation 40% versus 27% for Pt90Ir10, and Pt90Ir10 is harder (105 HB vs 39 HB). Pt90Ir10 is stiffer (200 GPa vs 168 GPa) and Pt99.95 runs hotter in service (1,500°C vs 1,200°C continuous). On the shop floor, Pt99.95 welds better (excellent vs very good).
Pt90Ir10Choose it when strength drives the design.
Pt99.95Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pt90Ir10 vs Pt99.95: 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
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Reduction in Area
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
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Same in both: Specific Heat Capacity 133 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 8.8 µm/m·K4.9 µin/in·°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) 0.25 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Same in both: Polishability 92 / 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
Same in both: Thermal Shock Resistance Index 7
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 | Pt90Ir10 | Pt99.95 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Pt90Ir10 vs Pt99.95 — frequently asked
Is Pt90Ir10 stronger than Pt99.95?
Yes. Pt90Ir10 has a typical yield strength of 210 MPa (30.5 ksi) against 45 MPa (6.53 ksi) for Pt99.95 — about 4.7 times as much. Tensile strength is 380 MPa (55.1 ksi) vs 140 MPa (20.3 ksi).
Which is cheaper, Pt90Ir10 or Pt99.95?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which welds better, Pt90Ir10 or Pt99.95?
Pt99.95. Its weldability rates excellent (90/100) against very good (75/100) for Pt90Ir10.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt90Ir10 and Pt99.95 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.