Precious Metal 80Ag-20CdO 1/4H vs 80Ag-20CdO-H
Precious Metal · 80Ag-20CdO temper comparison
80Ag-20CdO 1/4H and 80Ag-20CdO-H are two conditions of the same precious metal grade, 80Ag-20CdO: 1/4H (quarter hard) versus H (hardened). The chemistry is identical, so every difference below comes from the condition. 80Ag-20CdO-H is the stronger of the two: yield strength 300 MPa (43.5 ksi) against 215 MPa (31.2 ksi) for 80Ag-20CdO 1/4H, about 40% more; tensile strength follows at 355 MPa (51.5 ksi) vs 300 MPa (43.5 ksi). In exchange, 80Ag-20CdO 1/4H is the more ductile: elongation 8% versus 3% for 80Ag-20CdO-H, and 80Ag-20CdO-H is harder (102 HB vs 80 HB). 80Ag-20CdO 1/4H runs hotter in service (200°C vs 150°C continuous).
80Ag-20CdO 1/4HChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
80Ag-20CdO-HChoose it when strength drives the design.
80Ag-20CdO 1/4H vs 80Ag-20CdO-H: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all precious metal grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all precious metal grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 85 GPa12.3 Msi · Shear Modulus 31 GPa4.5 Msi · Bulk Modulus 105 GPa15.2 Msi · Poisson's Ratio 0.37
Physical
Density and transition temperatures.
Same in both: Density 9.9 g/cm³0.36 lb/in³ · Melting Point (Solidus) 961°C1,762 °F · Liquidus Temperature 961°C1,762 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 235 J/kg·K0.06 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 18 µm/m·K10 µin/in·°F · Latent Heat of Fusion 84 J/g36.1 BTU/lb · Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) 0.1 V · Corrosion Resistance 85 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Same in both: Machinability Rating (AISI 1212 = 100 %) 55% · Weldability 35 / 100 · Castability 20 / 100 · Brazeability / Solderability 85 / 100 · Polishability 70 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 1,450 MJ/kg623,388 BTU/lb · Embodied Carbon (primary production) 130 kg CO₂/kg · Typical Recycled Content 45%
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.
80Ag-20CdO 1/4H vs 80Ag-20CdO-H — frequently asked
Is 80Ag-20CdO-H stronger than 80Ag-20CdO 1/4H?
Yes. 80Ag-20CdO-H has a typical yield strength of 300 MPa (43.5 ksi) against 215 MPa (31.2 ksi) for 80Ag-20CdO 1/4H — about 40% more. Tensile strength is 355 MPa (51.5 ksi) vs 300 MPa (43.5 ksi).
Which condition does FabDigit quote by default, 1/4H or H?
A is the default 80Ag-20CdO condition in the FabDigit quote flow (neither 1/4H nor H). The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, 80Ag-20CdO 1/4H or 80Ag-20CdO-H?
80Ag-20CdO-H. Its machinability rates good (58/100) against fair (52/100) for 80Ag-20CdO 1/4H.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 80Ag-20CdO 1/4H and 80Ag-20CdO-H 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.