Precious Metal Pt87Rh13 vs Pt95Ir5
Precious Metal · grade comparison
Precious Metal Pt87Rh13 and Pt95Ir5 are both precious metal grades. Pt87Rh13 is the stronger of the two: yield strength 190 MPa (27.6 ksi) against 125 MPa (18.1 ksi) for Pt95Ir5, about 52% more; tensile strength follows at 380 MPa (55.1 ksi) vs 250 MPa (36.3 ksi). Pt87Rh13 is harder — 85 HB against 76 HB for Pt95Ir5 — which matters for wear surfaces and threads. Pt87Rh13 is lighter (19.6 g/cm³ vs 21.5 g/cm³ for Pt95Ir5) and Pt87Rh13 is stiffer (205 GPa vs 175 GPa).
Pt87Rh13Choose it when strength drives the design, or when surface hardness matters.
Pt87Rh13 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)
Shear Strength
Hardness, Brinell
Hardness, Vickers
Fatigue Strength (Endurance Limit)
Same in both: Poisson's Ratio 0.39 · Elongation at Break 32%
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
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Max Service Temperature (continuous)
Min Service Temperature
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 99 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Machinability Rating (AISI 1212 = 100 %)
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Embodied Water
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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 | Pt87Rh13 | Pt95Ir5 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Pt87Rh13 vs Pt95Ir5 — frequently asked
Is Pt87Rh13 stronger than Pt95Ir5?
Yes. Pt87Rh13 has a typical yield strength of 190 MPa (27.6 ksi) against 125 MPa (18.1 ksi) for Pt95Ir5 — about 52% more. Tensile strength is 380 MPa (55.1 ksi) vs 250 MPa (36.3 ksi).
Which is cheaper, Pt87Rh13 or Pt95Ir5?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Pt87Rh13 or Pt95Ir5?
Pt87Rh13. Its machinability rates fair (35/100) against poor (28/100) for Pt95Ir5; for welding the order is Pt95Ir5 first (excellent, 85/100) then Pt87Rh13 (very good, 80/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt87Rh13 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.