Precious Metal 90Pt-10Ir 1/2H vs 90Pt-10Ir-H
Precious Metal · 90Pt-10Ir temper comparison
90Pt-10Ir 1/2H and 90Pt-10Ir-H are two conditions of the same precious metal grade, 90Pt-10Ir: 1/2H (half hard) versus H (hardened). The chemistry is identical, so every difference below comes from the condition. 90Pt-10Ir-H is the stronger of the two: yield strength 690 MPa (100 ksi) against 480 MPa (69.6 ksi) for 90Pt-10Ir 1/2H, about 44% more; tensile strength follows at 830 MPa (120 ksi) vs 620 MPa (89.9 ksi). In exchange, 90Pt-10Ir 1/2H is the more ductile: elongation 8% versus 2% for 90Pt-10Ir-H, and 90Pt-10Ir-H is harder (255 HV vs 190 HV). 90Pt-10Ir 1/2H runs hotter in service (700°C vs 600°C continuous). On the shop floor, 90Pt-10Ir 1/2H welds better (65 vs 55 out of 100).
90Pt-10Ir 1/2HChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
90Pt-10Ir-HChoose it when strength drives the design.
90Pt-10Ir 1/2H vs 90Pt-10Ir-H: 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
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Vickers
Same in both: Shear Modulus 72 GPa10.4 Msi · Bulk Modulus 290 GPa42.1 Msi · Poisson's Ratio 0.39 · Hardness, Brinell 125 HB
Physical
Density and transition temperatures.
Same in both: Density 21.55 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 132 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 113 J/g48.6 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 100 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 25% · Castability 40 / 100 · Brazeability / Solderability 70 / 100 · Polishability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 245,000 MJ/kg1.05×10⁸ BTU/lb · Embodied Carbon (primary production) 13,500 kg CO₂/kg · Embodied Water 280,000 L/kg33,551 gal/lb · Typical Recycled Content 30%
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.
90Pt-10Ir 1/2H vs 90Pt-10Ir-H — frequently asked
Is 90Pt-10Ir-H stronger than 90Pt-10Ir 1/2H?
Yes. 90Pt-10Ir-H has a typical yield strength of 690 MPa (100 ksi) against 480 MPa (69.6 ksi) for 90Pt-10Ir 1/2H — about 44% more. Tensile strength is 830 MPa (120 ksi) vs 620 MPa (89.9 ksi).
Which condition does FabDigit quote by default, 1/2H or H?
ANN is the default 90Pt-10Ir condition in the FabDigit quote flow (neither 1/2H nor H). 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, 90Pt-10Ir 1/2H or 90Pt-10Ir-H?
90Pt-10Ir-H, by a small margin. Both rate fair for machinability — 45/100 against 38/100 for 90Pt-10Ir 1/2H; for welding the order is 90Pt-10Ir 1/2H first (good, 65/100) then 90Pt-10Ir-H (good, 55/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 90Pt-10Ir 1/2H and 90Pt-10Ir-H 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.