Precious Metal Pt90Ir10-H04 vs Pt90Ir10 Spring
Precious Metal · Pt90Ir10 temper comparison
Pt90Ir10-H04 and Pt90Ir10 Spring are two conditions of the same precious metal grade, Pt90Ir10: H04 (full hard) versus Spring (spring hard). The chemistry is identical, so every difference below comes from the condition. Pt90Ir10 Spring is the stronger of the two: yield strength 930 MPa (135 ksi) against 830 MPa (120 ksi) for Pt90Ir10-H04, about 12% more; tensile strength follows at 1,050 MPa (152 ksi) vs 950 MPa (138 ksi). In exchange, Pt90Ir10-H04 is the more ductile: elongation 2.5% versus 1.5% for Pt90Ir10 Spring, and Pt90Ir10 Spring is harder (270 HB vs 245 HB). Pt90Ir10-H04 runs hotter in service (500°C vs 450°C continuous).
Pt90Ir10-H04Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pt90Ir10 SpringChoose it when strength drives the design.
Pt90Ir10-H04 vs Pt90Ir10 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.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Brinell
Hardness, Rockwell B
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 205 GPa29.7 Msi · Shear Modulus 72 GPa10.4 Msi · Bulk Modulus 255 GPa37 Msi · Poisson's Ratio 0.39
Physical
Density and transition temperatures.
Same in both: Density 21.54 g/cm³0.78 lb/in³ · Melting Point (Solidus) 1,780°C3,236 °F · Liquidus Temperature 1,800°C3,272 °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) 8.8 µm/m·K4.9 µin/in·°F · Latent Heat of Fusion 118 J/g50.7 BTU/lb · Min Service Temperature -269°C-452 °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 40 / 100 · Brazeability / Solderability 60 / 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) 14,500 kg CO₂/kg · Embodied Water 260,000 L/kg31,155 gal/lb · Typical Recycled Content 45%
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.
Pt90Ir10-H04 vs Pt90Ir10 Spring — frequently asked
Is Pt90Ir10 Spring stronger than Pt90Ir10-H04?
Yes. Pt90Ir10 Spring has a typical yield strength of 930 MPa (135 ksi) against 830 MPa (120 ksi) for Pt90Ir10-H04 — about 12% more. Tensile strength is 1,050 MPa (152 ksi) vs 950 MPa (138 ksi).
Which condition does FabDigit quote by default, H04 or Spring?
Annealed is the default Pt90Ir10 condition in the FabDigit quote flow (neither H04 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 welds better, Pt90Ir10-H04 or Pt90Ir10 Spring?
Pt90Ir10-H04. Its weldability rates fair (50/100) against fair (45/100) for Pt90Ir10 Spring.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pt90Ir10-H04 and Pt90Ir10 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.