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Precious Metal Pure Pd vs Silver 999

Precious Metal · grade comparison

Precious Metal Pure Pd and Silver 999 are both precious metal grades. Pure Pd is the stronger of the two: tensile strength 180 MPa (26.1 ksi) against 140 MPa (20.3 ksi) for Silver 999, about 29% more. In exchange, Silver 999 is the more ductile: elongation 48% versus 32% for Pure Pd, and Pure Pd is harder (38 HB vs 25 HB). Silver 999 is lighter (10.49 g/cm³ vs 12.02 g/cm³ for Pure Pd) and Pure Pd is stiffer (121 GPa vs 76 GPa). On the shop floor, Pure Pd welds better (excellent vs good) and Pure Pd sits in a lower cost tier (high, $$$$) than Silver 999 (specialty, $$$$$).

Pure PdChoose it when strength drives the design, or when the part sees heat.

Silver 999Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

Pure Pd vs Silver 999: properties

Pure PdSilver 999

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

121 GPa17.5 Msi
76 GPa11 Msi

Shear Modulus

44 GPa6.4 Msi
29.5 GPa4.3 Msi

Bulk Modulus

181 GPa26.3 Msi
100 GPa14.5 Msi

Poisson's Ratio

0.39
0.37

Tensile Strength (Ultimate)

180 MPa26.1 ksi
140 MPa20.3 ksi

Elongation at Break

32%
48%

Reduction in Area

80%
85%

Shear Strength

110 MPa16 ksi
95 MPa13.8 ksi

Hardness, Brinell

38 HB
25 HB

Hardness, Vickers

40 HV
27 HV

Fatigue Strength (Endurance Limit)

—
60 MPa8.7 ksi

Same in both: Yield Strength (0.2% offset) 55 MPa8 ksi

Physical

Density and transition temperatures.

Density

12.02 g/cm³0.43 lb/in³
10.49 g/cm³0.38 lb/in³

Melting Point (Solidus)

1,554°C2,829 °F
962°C1,763 °F

Liquidus Temperature

1,554°C2,829 °F
962°C1,763 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

71.8 W/m·K41.5 BTU/hr·ft·°F
429 W/m·K248 BTU/hr·ft·°F

Specific Heat Capacity

244 J/kg·K0.06 BTU/lb·°F
235 J/kg·K0.06 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

11.8 µm/m·K6.6 µin/in·°F
19.6 µm/m·K10.9 µin/in·°F

Latent Heat of Fusion

157 J/g67.5 BTU/lb
105 J/g45.1 BTU/lb

Max Service Temperature (continuous)

500°C932 °F
250°C482 °F

Same in both: Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

16 % IACS
106 % IACS

Electrical Resistivity

1.08×10⁻⁷ Ω·m4.25 µΩ·in
1.59×10⁻⁸ Ω·m0.626 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

0.25 V
-0.11 V

Corrosion Resistance

95 / 100
80 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Machinability

35 / 100
40 / 100

Machinability Rating (AISI 1212 = 100 %)

35%
55%

Weldability

85 / 100
60 / 100

Formability (cold)

95 / 100
98 / 100

Castability

65 / 100
85 / 100

Brazeability / Solderability

90 / 100
96 / 100

Polishability

92 / 100
98 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

120,000 MJ/kg5.16×10⁷ BTU/lb
1,550 MJ/kg666,381 BTU/lb

Embodied Carbon (primary production)

12,000 kg CO₂/kg
96 kg CO₂/kg

Typical Recycled Content

28%
30%

Embodied Water

—
250 L/kg30 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

15 kN·m/kg
13 kN·m/kg

Specific Stiffness (E / density)

10.1 MN·m/kg
7.2 MN·m/kg

Modulus of Resilience

13 kJ/m³
20 kJ/m³

Thermal Diffusivity

24.5 mm²/s
174 mm²/s

Thermal Shock Resistance Index

9
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.

50100200500101520Density (g/cm³)Yield strength (MPa) — log scaleSilver 999Pure Pd

Manufacturing and finishing

CapabilityPure PdSilver 999
Default condition—O
Relative cost$$$$ High$$$$$ Specialty
Min. machined wall——
Best machined surface——

Pure Pd vs Silver 999 — frequently asked

Is Pure Pd stronger than Silver 999?

Yes. Pure Pd has a typical tensile strength of 180 MPa (26.1 ksi) against 140 MPa (20.3 ksi) for Silver 999 — about 29% more.

Which is cheaper, Pure Pd or Silver 999?

Pure Pd is the lower-cost material: it sits in the high tier ($$$$) while Silver 999 is specialty ($$$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, Pure Pd or Silver 999?

Silver 999, by a small margin. Both rate fair for machinability — 40/100 against 35/100 for Pure Pd; for welding the order is Pure Pd first (excellent, 85/100) then Silver 999 (good, 60/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Pure Pd and Silver 999 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.