Precious Metal Pt90Ir10 vs Pt95Ir5
Precious Metal · grade comparison
Precious Metal Pt90Ir10 and Pt95Ir5 are both precious metal grades. Pt90Ir10 is the stronger of the two: yield strength 210 MPa (30.5 ksi) against 125 MPa (18.1 ksi) for Pt95Ir5, about 68% more; tensile strength follows at 380 MPa (55.1 ksi) vs 250 MPa (36.3 ksi). In exchange, Pt95Ir5 is the more ductile: elongation 32% versus 27% for Pt90Ir10, and Pt90Ir10 is harder (105 HB vs 76 HB). Pt90Ir10 is stiffer (200 GPa vs 175 GPa) and Pt90Ir10 runs hotter in service (1,200°C vs 1,000°C continuous). On the shop floor, Pt95Ir5 welds better (excellent vs very good).
Pt90Ir10Choose it when strength drives the design, or when the part sees heat.
Pt95Ir5Choose it when the part is bent, formed or impact-loaded, or when it will be welded.
Pt90Ir10 vs Pt95Ir5: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Fatigue Strength (Endurance Limit)
Same in both: Poisson's Ratio 0.39
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
Thermal Expansion (CTE, 20–100 °C)
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
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 99 / 100
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 Carbon (primary production)
Embodied Water
Typical Recycled Content
Same in both: Embodied Energy (primary production) 250,000 MJ/kg1.07×10⁸ BTU/lb
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 | Pt95Ir5 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Pt90Ir10 vs Pt95Ir5 — frequently asked
Is Pt90Ir10 stronger than Pt95Ir5?
Yes. Pt90Ir10 has a typical yield strength of 210 MPa (30.5 ksi) against 125 MPa (18.1 ksi) for Pt95Ir5 — about 68% more. Tensile strength is 380 MPa (55.1 ksi) vs 250 MPa (36.3 ksi).
Which is cheaper, Pt90Ir10 or Pt95Ir5?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Pt90Ir10 or Pt95Ir5?
Pt95Ir5, by a small margin. Both rate poor for machinability — 28/100 against 22/100 for Pt90Ir10; for welding the order is Pt95Ir5 first (excellent, 85/100) then Pt90Ir10 (very good, 75/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt90Ir10 and Pt95Ir5 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.