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Precious Metal Coin Silver 900 vs IC-Ag99.99

Precious Metal · grade comparison

Precious Metal Coin Silver 900 and IC-Ag99.99 are both precious metal grades. Coin Silver 900 is the stronger of the two: yield strength 100 MPa (14.5 ksi) against 45 MPa (6.53 ksi) for IC-Ag99.99, about 122% more; tensile strength follows at 290 MPa (42.1 ksi) vs 140 MPa (20.3 ksi). In exchange, IC-Ag99.99 is the more ductile: elongation 45% versus 40% for Coin Silver 900, and Coin Silver 900 is harder (66 HB vs 25 HB). IC-Ag99.99 runs hotter in service (500°C vs 250°C continuous) and IC-Ag99.99 conducts heat better (429 W/m·K vs 330 W/m·K). On the shop floor, IC-Ag99.99 welds better (65 vs 55 out of 100).

Coin Silver 900Choose it when strength drives the design.

IC-Ag99.99Choose it when the part is bent, formed or impact-loaded, or when the part sees heat.

Coin Silver 900 vs IC-Ag99.99: properties

Coin Silver 900IC-Ag99.99

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

78 GPa11.3 Msi
76 GPa11 Msi

Bulk Modulus

103 GPa14.9 Msi
100 GPa14.5 Msi

Tensile Strength (Ultimate)

290 MPa42.1 ksi
140 MPa20.3 ksi

Yield Strength (0.2% offset)

100 MPa14.5 ksi
45 MPa6.5 ksi

Elongation at Break

40%
45%

Shear Strength

185 MPa26.8 ksi
125 MPa18.1 ksi

Fatigue Strength (Endurance Limit)

100 MPa14.5 ksi
60 MPa8.7 ksi

Hardness, Brinell

66 HB
25 HB

Hardness, Rockwell B

30 HRB
—

Hardness, Vickers

70 HV
26 HV

Reduction in Area

—
80%

Same in both: Shear Modulus 29 GPa4.2 Msi · Poisson's Ratio 0.37

Physical

Density and transition temperatures.

Density

10.31 g/cm³0.37 lb/in³
10.49 g/cm³0.38 lb/in³

Melting Point (Solidus)

779°C1,434 °F
962°C1,763 °F

Liquidus Temperature

875°C1,607 °F
962°C1,763 °F

Thermal

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

Thermal Conductivity

330 W/m·K191 BTU/hr·ft·°F
429 W/m·K248 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

18.9 µm/m·K10.5 µin/in·°F
19.5 µm/m·K10.8 µin/in·°F

Max Service Temperature (continuous)

250°C482 °F
500°C932 °F

Min Service Temperature

-200°C-328 °F
-250°C-418 °F

Same in both: Latent Heat of Fusion 105 J/g45.1 BTU/lb

Electrical

Conductivity and insulation.

Electrical Conductivity

85 % IACS
106 % IACS

Electrical Resistivity

2.03×10⁻⁸ Ω·m0.799 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)

0.1 V
0.05 V

Corrosion Resistance

70 / 100
78 / 100

Manufacturability

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

Machinability

40 / 100
45 / 100

Weldability

55 / 100
65 / 100

Formability (cold)

88 / 100
98 / 100

Castability

80 / 100
85 / 100

Same in both: Machinability Rating (AISI 1212 = 100 %) 40% · Brazeability / Solderability 95 / 100 · Polishability 95 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

1,450 MJ/kg623,388 BTU/lb
1,500 MJ/kg644,885 BTU/lb

Embodied Carbon (primary production)

100 kg CO₂/kg
110 kg CO₂/kg

Typical Recycled Content

40%
30%

Embodied Water

—
350 L/kg41.9 gal/lb

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

28 kN·m/kg
13 kN·m/kg

Specific Stiffness (E / density)

7.6 MN·m/kg
7.2 MN·m/kg

Modulus of Resilience

64 kJ/m³
13 kJ/m³

Thermal Diffusivity

133.4 mm²/s
174 mm²/s

Thermal Shock Resistance Index

65
41

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 scaleCoin Silver 900IC-Ag99.99

Manufacturing and finishing

CapabilityCoin Silver 900IC-Ag99.99
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

Coin Silver 900 vs IC-Ag99.99 — frequently asked

Is Coin Silver 900 stronger than IC-Ag99.99?

Yes. Coin Silver 900 has a typical yield strength of 100 MPa (14.5 ksi) against 45 MPa (6.53 ksi) for IC-Ag99.99 — about 122% more. Tensile strength is 290 MPa (42.1 ksi) vs 140 MPa (20.3 ksi).

Which is cheaper, Coin Silver 900 or IC-Ag99.99?

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, Coin Silver 900 or IC-Ag99.99?

IC-Ag99.99, by a small margin. Both rate fair for machinability — 45/100 against 40/100 for Coin Silver 900; for welding the order is IC-Ag99.99 first (good, 65/100) then Coin Silver 900 (good, 55/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Coin Silver 900 and IC-Ag99.99 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.