Precious Metal Pd99.9-H02 vs Pd99.9-H04
Precious Metal · Pd99.9 temper comparison
Pd99.9-H02 and Pd99.9-H04 are two conditions of the same precious metal grade, Pd99.9: H02 (half hard) versus H04 (full hard). The chemistry is identical, so every difference below comes from the condition. Pd99.9-H04 is the stronger of the two: yield strength 285 MPa (41.3 ksi) against 225 MPa (32.6 ksi) for Pd99.9-H02, about 27% more; tensile strength follows at 330 MPa (47.9 ksi) vs 280 MPa (40.6 ksi). In exchange, Pd99.9-H02 is the more ductile: elongation 8% versus 3% for Pd99.9-H04, and Pd99.9-H04 is harder (100 HB vs 84 HB). Pd99.9-H02 runs hotter in service (300°C vs 250°C continuous).
Pd99.9-H02Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.
Pd99.9-H04Choose it when strength drives the design.
Pd99.9-H02 vs Pd99.9-H04: 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
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 121 GPa17.5 Msi · Shear Modulus 44 GPa6.4 Msi · Bulk Modulus 180 GPa26.1 Msi · Poisson's Ratio 0.39
Physical
Density and transition temperatures.
Same in both: Density 12.02 g/cm³0.43 lb/in³ · Melting Point (Solidus) 1,555°C2,831 °F · Liquidus Temperature 1,555°C2,831 °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 244 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 11.8 µm/m·K6.6 µin/in·°F · Latent Heat of Fusion 157 J/g67.5 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 92 / 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 65 / 100 · Brazeability / Solderability 85 / 100 · Polishability 90 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 60,000 MJ/kg2.58×10⁷ BTU/lb · Embodied Carbon (primary production) 3,900 kg CO₂/kg · Embodied Water 250,000 L/kg29,957 gal/lb · Typical Recycled Content 28%
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.
Pd99.9-H02 vs Pd99.9-H04 — frequently asked
Is Pd99.9-H04 stronger than Pd99.9-H02?
Yes. Pd99.9-H04 has a typical yield strength of 285 MPa (41.3 ksi) against 225 MPa (32.6 ksi) for Pd99.9-H02 — about 27% more. Tensile strength is 330 MPa (47.9 ksi) vs 280 MPa (40.6 ksi).
Which condition does FabDigit quote by default, H02 or H04?
Annealed is the default Pd99.9 condition in the FabDigit quote flow (neither H02 nor H04). 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, Pd99.9-H02 or Pd99.9-H04?
Pd99.9-H04, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for Pd99.9-H02; for welding the order is Pd99.9-H04 first (very good, 80/100) then Pd99.9-H02 (very good, 75/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pd99.9-H02 and Pd99.9-H04 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.