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Precious Metal AgC10 vs AgCu-Eutectic

Precious Metal · grade comparison

Precious Metal AgC10 and AgCu-Eutectic are both precious metal grades. AgCu-Eutectic is the stronger of the two: yield strength 130 MPa (18.9 ksi) against 70 MPa (10.2 ksi) for AgC10, about 86% more; tensile strength follows at 300 MPa (43.5 ksi) vs 110 MPa (16 ksi). AgCu-Eutectic is the more ductile: elongation 30% versus 4% for AgC10, and AgCu-Eutectic is harder (65 HB vs 30 HB). AgC10 is lighter (7.6 g/cm³ vs 9.9 g/cm³ for AgCu-Eutectic) and AgCu-Eutectic is stiffer (85 GPa vs 55 GPa). On the shop floor, AgCu-Eutectic welds better (fair vs poor).

AgC10Choose it when weight is the constraint.

AgCu-EutecticChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

AgC10 vs AgCu-Eutectic: properties

AgC10AgCu-Eutectic

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

55 GPa8 Msi
85 GPa12.3 Msi

Poisson's Ratio

0.35
0.36

Tensile Strength (Ultimate)

110 MPa16 ksi
300 MPa43.5 ksi

Yield Strength (0.2% offset)

70 MPa10.2 ksi
130 MPa18.9 ksi

Elongation at Break

4%
30%

Compressive Strength

200 MPa29 ksi
—

Hardness, Brinell

30 HB
65 HB

Shear Modulus

—
32 GPa4.6 Msi

Bulk Modulus

—
108 GPa15.7 Msi

Reduction in Area

—
45%

Shear Strength

—
190 MPa27.6 ksi

Fatigue Strength (Endurance Limit)

—
120 MPa17.4 ksi

Hardness, Rockwell B

—
30 HRB

Hardness, Vickers

—
70 HV

Physical

Density and transition temperatures.

Density

7.6 g/cm³0.27 lb/in³
9.9 g/cm³0.36 lb/in³

Melting Point (Solidus)

961°C1,762 °F
779°C1,434 °F

Liquidus Temperature

961°C1,762 °F
780°C1,436 °F

Thermal

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

Thermal Conductivity

200 W/m·K116 BTU/hr·ft·°F
355 W/m·K205 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

16 µm/m·K8.9 µin/in·°F
19 µm/m·K10.6 µin/in·°F

Latent Heat of Fusion

100 J/g43 BTU/lb
140 J/g60.2 BTU/lb

Min Service Temperature

-60°C-76 °F
-200°C-328 °F

Same in both: Max Service Temperature (continuous) 300°C572 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

48 % IACS
86 % IACS

Electrical Resistivity

3.6×10⁻⁸ Ω·m1.42 µΩ·in
2×10⁻⁸ Ω·m0.787 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

0.1 V
-0.05 V

Corrosion Resistance

82 / 100
75 / 100

Manufacturability

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

Machinability

55 / 100
50 / 100

Weldability

15 / 100
40 / 100

Formability (cold)

30 / 100
85 / 100

Brazeability / Solderability

30 / 100
98 / 100

Polishability

40 / 100
88 / 100

Machinability Rating (AISI 1212 = 100 %)

—
50%

Castability

—
85 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

1,300 MJ/kg558,900 BTU/lb
1,130 MJ/kg485,813 BTU/lb

Embodied Carbon (primary production)

90 kg CO₂/kg
80 kg CO₂/kg

Typical Recycled Content

40%
45%

Embodied Water

—
90,000 L/kg10,784 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

14 kN·m/kg
30 kN·m/kg

Specific Stiffness (E / density)

7.2 MN·m/kg
8.6 MN·m/kg

Modulus of Resilience

45 kJ/m³
99 kJ/m³

Thermal Diffusivity

94 mm²/s
130.4 mm²/s

Thermal Shock Resistance Index

25
66

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 scaleAgC10AgCu-Eutectic

Manufacturing and finishing

CapabilityAgC10AgCu-Eutectic
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

AgC10 vs AgCu-Eutectic — frequently asked

Is AgCu-Eutectic stronger than AgC10?

Yes. AgCu-Eutectic has a typical yield strength of 130 MPa (18.9 ksi) against 70 MPa (10.2 ksi) for AgC10 — about 86% more. Tensile strength is 300 MPa (43.5 ksi) vs 110 MPa (16 ksi).

Which is cheaper, AgC10 or AgCu-Eutectic?

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 AgCu-Eutectic?

AgC10. Its machinability rates good (55/100) against fair (50/100) for AgCu-Eutectic; for welding the order is AgCu-Eutectic first (fair, 40/100) then AgC10 (poor, 15/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in AgC10 and AgCu-Eutectic 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.