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Precious Metal AgC10 vs AuNi5

Precious Metal · grade comparison

Precious Metal AgC10 and AuNi5 are both precious metal grades. AuNi5 is the stronger of the two: yield strength 610 MPa (88.5 ksi) against 70 MPa (10.2 ksi) for AgC10, about 8.7 times as much; tensile strength follows at 700 MPa (102 ksi) vs 110 MPa (16 ksi). In exchange, AgC10 is the more ductile: elongation 4% versus 3% for AuNi5. AgC10 is lighter (7.6 g/cm³ vs 18.3 g/cm³ for AuNi5) and AuNi5 is stiffer (105 GPa vs 55 GPa). On the shop floor, AgC10 machines more easily (good vs fair) and AuNi5 welds better (good vs poor).

AgC10Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.

AuNi5Choose it when strength drives the design, or when it will be welded.

AgC10 vs AuNi5: properties

AgC10AuNi5

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

55 GPa8 Msi
105 GPa15.2 Msi

Poisson's Ratio

0.35
0.39

Tensile Strength (Ultimate)

110 MPa16 ksi
700 MPa102 ksi

Yield Strength (0.2% offset)

70 MPa10.2 ksi
610 MPa88.5 ksi

Elongation at Break

4%
3%

Compressive Strength

200 MPa29 ksi
—

Hardness, Brinell

30 HB
—

Shear Modulus

—
38 GPa5.5 Msi

Bulk Modulus

—
175 GPa25.4 Msi

Shear Strength

—
420 MPa60.9 ksi

Fatigue Strength (Endurance Limit)

—
250 MPa36.3 ksi

Hardness, Vickers

—
200 HV

Physical

Density and transition temperatures.

Density

7.6 g/cm³0.27 lb/in³
18.3 g/cm³0.66 lb/in³

Melting Point (Solidus)

961°C1,762 °F
990°C1,814 °F

Liquidus Temperature

961°C1,762 °F
1,020°C1,868 °F

Thermal

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

Thermal Conductivity

200 W/m·K116 BTU/hr·ft·°F
60 W/m·K34.7 BTU/hr·ft·°F

Specific Heat Capacity

280 J/kg·K0.07 BTU/lb·°F
140 J/kg·K0.03 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

16 µm/m·K8.9 µin/in·°F
14.3 µm/m·K7.9 µin/in·°F

Latent Heat of Fusion

100 J/g43 BTU/lb
68 J/g29.2 BTU/lb

Max Service Temperature (continuous)

300°C572 °F
200°C392 °F

Min Service Temperature

-60°C-76 °F
-200°C-328 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

48 % IACS
13 % IACS

Electrical Resistivity

3.6×10⁻⁸ Ω·m1.42 µΩ·in
1.3×10⁻⁷ Ω·m5.12 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

0.1 V
0.22 V

Corrosion Resistance

82 / 100
94 / 100

Manufacturability

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

Machinability

55 / 100
40 / 100

Weldability

15 / 100
60 / 100

Brazeability / Solderability

30 / 100
85 / 100

Polishability

40 / 100
92 / 100

Machinability Rating (AISI 1212 = 100 %)

—
30%

Castability

—
70 / 100

Same in both: Formability (cold) 30 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

1,300 MJ/kg558,900 BTU/lb
185,000 MJ/kg7.95×10⁷ BTU/lb

Embodied Carbon (primary production)

90 kg CO₂/kg
15,000 kg CO₂/kg

Embodied Water

—
250,000 L/kg29,957 gal/lb

Same in both: Typical Recycled Content 40%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

14 kN·m/kg
38 kN·m/kg

Specific Stiffness (E / density)

7.2 MN·m/kg
5.7 MN·m/kg

Modulus of Resilience

45 kJ/m³
1,772 kJ/m³

Thermal Diffusivity

94 mm²/s
23.4 mm²/s

Thermal Shock Resistance Index

25
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.

50100200500101520Density (g/cm³)Yield strength (MPa) — log scaleAgC10AuNi5

Manufacturing and finishing

CapabilityAgC10AuNi5
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

AgC10 vs AuNi5 — frequently asked

Is AuNi5 stronger than AgC10?

Yes. AuNi5 has a typical yield strength of 610 MPa (88.5 ksi) against 70 MPa (10.2 ksi) for AgC10 — about 8.7 times as much. Tensile strength is 700 MPa (102 ksi) vs 110 MPa (16 ksi).

Which is cheaper, AgC10 or AuNi5?

Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which is easier to machine, AgC10 or AuNi5?

AgC10. Its machinability rates good (55/100) against fair (40/100) for AuNi5; for welding the order is AuNi5 first (good, 60/100) then AgC10 (poor, 15/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in AgC10 and AuNi5 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.