Precious Metal Pt95Ir5-H02 vs Pt95Ir5 Spring
Precious Metal · Pt95Ir5 temper comparison
Pt95Ir5-H02 and Pt95Ir5 Spring are two conditions of the same precious metal grade, Pt95Ir5: H02 (half hard) versus Spring (spring hard). The chemistry is identical, so every difference below comes from the condition. Pt95Ir5 Spring is the stronger of the two: yield strength 545 MPa (79 ksi) against 350 MPa (50.8 ksi) for Pt95Ir5-H02, about 56% more; tensile strength follows at 590 MPa (85.6 ksi) vs 420 MPa (60.9 ksi). In exchange, Pt95Ir5-H02 is the more ductile: elongation 7% versus 2% for Pt95Ir5 Spring, and Pt95Ir5 Spring is harder (165 HB vs 128 HB). Pt95Ir5-H02 runs hotter in service (550°C vs 450°C continuous).
Pt95Ir5-H02Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pt95Ir5 SpringChoose it when strength drives the design.
Pt95Ir5-H02 vs Pt95Ir5 Spring: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Shear Modulus 63 GPa9.1 Msi · Bulk Modulus 235 GPa34.1 Msi · Poisson's Ratio 0.39
Physical
Density and transition temperatures.
Same in both: Density 21.5 g/cm³0.78 lb/in³ · Melting Point (Solidus) 1,779°C3,234 °F · Liquidus Temperature 1,790°C3,254 °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 113 J/g48.6 BTU/lb · Min Service Temperature -253°C-423 °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)
Same in both: Castability 55 / 100 · Brazeability / Solderability 80 / 100 · Polishability 92 / 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) 14,000 kg CO₂/kg · Embodied Water 200,000 L/kg23,965 gal/lb · Typical Recycled Content 40%
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.
Pt95Ir5-H02 vs Pt95Ir5 Spring — frequently asked
Is Pt95Ir5 Spring stronger than Pt95Ir5-H02?
Yes. Pt95Ir5 Spring has a typical yield strength of 545 MPa (79 ksi) against 350 MPa (50.8 ksi) for Pt95Ir5-H02 — about 56% more. Tensile strength is 590 MPa (85.6 ksi) vs 420 MPa (60.9 ksi).
Which condition does FabDigit quote by default, H02 or Spring?
Annealed is the default Pt95Ir5 condition in the FabDigit quote flow (neither H02 nor Spring). 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, Pt95Ir5-H02 or Pt95Ir5 Spring?
Pt95Ir5 Spring, by a small margin. Both rate fair for machinability — 42/100 against 36/100 for Pt95Ir5-H02; for welding the order is Pt95Ir5-H02 first (very good, 82/100) then Pt95Ir5 Spring (very good, 75/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt95Ir5-H02 and Pt95Ir5 Spring 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.