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Precious Metal 85Ag-15CdO vs Silver 999

Precious Metal · grade comparison

Precious Metal 85Ag-15CdO and Silver 999 are both precious metal grades. 85Ag-15CdO is the stronger of the two: yield strength 120 MPa (17.4 ksi) against 55 MPa (7.98 ksi) for Silver 999, about 118% more; tensile strength follows at 230 MPa (33.4 ksi) vs 140 MPa (20.3 ksi). In exchange, Silver 999 is the more ductile: elongation 48% versus 20% for 85Ag-15CdO, and 85Ag-15CdO is harder (58 HB vs 25 HB). 85Ag-15CdO is lighter (10.05 g/cm³ vs 10.49 g/cm³ for Silver 999) and 85Ag-15CdO is stiffer (82 GPa vs 76 GPa). On the shop floor, Silver 999 welds better (good vs fair) and 85Ag-15CdO sits in a lower cost tier (high, $$$$) than Silver 999 (specialty, $$$$$).

85Ag-15CdOChoose it when strength drives the design, or when weight is the constraint.

Silver 999Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

85Ag-15CdO vs Silver 999: properties

85Ag-15CdOSilver 999

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

82 GPa11.9 Msi
76 GPa11 Msi

Shear Modulus

30 GPa4.4 Msi
29.5 GPa4.3 Msi

Tensile Strength (Ultimate)

230 MPa33.4 ksi
140 MPa20.3 ksi

Yield Strength (0.2% offset)

120 MPa17.4 ksi
55 MPa8 ksi

Elongation at Break

20%
48%

Shear Strength

150 MPa21.8 ksi
95 MPa13.8 ksi

Fatigue Strength (Endurance Limit)

95 MPa13.8 ksi
60 MPa8.7 ksi

Hardness, Brinell

58 HB
25 HB

Hardness, Vickers

60 HV
27 HV

Reduction in Area

—
85%

Same in both: Bulk Modulus 100 GPa14.5 Msi · Poisson's Ratio 0.37

Physical

Density and transition temperatures.

Density

10.05 g/cm³0.36 lb/in³
10.49 g/cm³0.38 lb/in³

Melting Point (Solidus)

940°C1,724 °F
962°C1,763 °F

Liquidus Temperature

961°C1,762 °F
962°C1,763 °F

Thermal

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

Thermal Conductivity

320 W/m·K185 BTU/hr·ft·°F
429 W/m·K248 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

19.4 µm/m·K10.8 µin/in·°F
19.6 µm/m·K10.9 µin/in·°F

Latent Heat of Fusion

90 J/g38.7 BTU/lb
105 J/g45.1 BTU/lb

Same in both: Specific Heat Capacity 235 J/kg·K0.06 BTU/lb·°F · Max Service Temperature (continuous) 250°C482 °F · Min Service Temperature -200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

75 % IACS
106 % IACS

Electrical Resistivity

2.3×10⁻⁸ Ω·m0.906 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)

0.12 V
-0.11 V

Corrosion Resistance

88 / 100
80 / 100

Manufacturability

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

Machinability Rating (AISI 1212 = 100 %)

30%
55%

Weldability

35 / 100
60 / 100

Formability (cold)

80 / 100
98 / 100

Castability

25 / 100
85 / 100

Brazeability / Solderability

85 / 100
96 / 100

Polishability

70 / 100
98 / 100

Same in both: Machinability 40 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

1,500 MJ/kg644,885 BTU/lb
1,550 MJ/kg666,381 BTU/lb

Embodied Carbon (primary production)

115 kg CO₂/kg
96 kg CO₂/kg

Embodied Water

1,600 L/kg192 gal/lb
250 L/kg30 gal/lb

Typical Recycled Content

45%
30%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

23 kN·m/kg
13 kN·m/kg

Specific Stiffness (E / density)

8.2 MN·m/kg
7.2 MN·m/kg

Modulus of Resilience

88 kJ/m³
20 kJ/m³

Thermal Diffusivity

135.5 mm²/s
174 mm²/s

Thermal Shock Resistance Index

46
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 99985Ag-15CdO

Manufacturing and finishing

Capability85Ag-15CdOSilver 999
Default condition—O
Relative cost$$$$ High$$$$$ Specialty
Min. machined wall——
Best machined surface——

85Ag-15CdO vs Silver 999 — frequently asked

Is 85Ag-15CdO stronger than Silver 999?

Yes. 85Ag-15CdO has a typical yield strength of 120 MPa (17.4 ksi) against 55 MPa (7.98 ksi) for Silver 999 — about 118% more. Tensile strength is 230 MPa (33.4 ksi) vs 140 MPa (20.3 ksi).

Which is cheaper, 85Ag-15CdO or Silver 999?

85Ag-15CdO 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 welds better, 85Ag-15CdO or Silver 999?

Silver 999. Its weldability rates good (60/100) against fair (35/100) for 85Ag-15CdO.

Ready to make it?

Upload a CAD file and FabDigit prices the part in 85Ag-15CdO 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.