Precious Metal Pt70Rh30/Pt94Rh6 vs Pt95Ir5
Precious Metal · grade comparison
Precious Metal Pt70Rh30/Pt94Rh6 and Pt95Ir5 are both precious metal grades. Pt70Rh30/Pt94Rh6 is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 125 MPa (18.1 ksi) for Pt95Ir5, about 100% more; tensile strength follows at 550 MPa (79.8 ksi) vs 250 MPa (36.3 ksi). In exchange, Pt95Ir5 is the more ductile: elongation 32% versus 28% for Pt70Rh30/Pt94Rh6, and Pt70Rh30/Pt94Rh6 is harder (125 HV vs 80 HV). Pt70Rh30/Pt94Rh6 is lighter (17.6 g/cm³ vs 21.5 g/cm³ for Pt95Ir5) and Pt70Rh30/Pt94Rh6 is stiffer (225 GPa vs 175 GPa).
Pt70Rh30/Pt94Rh6Choose it when strength drives the design, or when weight is the constraint.
Pt95Ir5Choose it when the part is bent, formed or impact-loaded.
Pt70Rh30/Pt94Rh6 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
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Vickers
Fatigue Strength (Endurance Limit)
Hardness, Brinell
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.
Same in both: Electrical Conductivity 9.1 % IACS · Electrical Resistivity 1.9×10⁻⁷ Ω·m7.48 µΩ·in
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 %)
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Same in both: Weldability 85 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Water 200,000 L/kg23,965 gal/lb
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 | Pt70Rh30/Pt94Rh6 | Pt95Ir5 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Pt70Rh30/Pt94Rh6 vs Pt95Ir5 — frequently asked
Is Pt70Rh30/Pt94Rh6 stronger than Pt95Ir5?
Yes. Pt70Rh30/Pt94Rh6 has a typical yield strength of 250 MPa (36.3 ksi) against 125 MPa (18.1 ksi) for Pt95Ir5 — about 100% more. Tensile strength is 550 MPa (79.8 ksi) vs 250 MPa (36.3 ksi).
Which is cheaper, Pt70Rh30/Pt94Rh6 or Pt95Ir5?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
When should I choose Pt70Rh30/Pt94Rh6 over Pt95Ir5?
Pick Pt70Rh30/Pt94Rh6 when strength drives the design, or when weight is the constraint. Pick Pt95Ir5 when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt70Rh30/Pt94Rh6 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.