Precious Metal Gold 24K-F vs Gold 24K-O
Precious Metal · Gold 24K temper comparison
Gold 24K-F and Gold 24K-O are two conditions of the same precious metal grade, Gold 24K: F (as fabricated) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. Gold 24K-O is the stronger of the two: yield strength 30 MPa (4.35 ksi) against 28 MPa (4.06 ksi) for Gold 24K-F, about 7% more; tensile strength follows at 125 MPa (18.1 ksi) vs 105 MPa (15.2 ksi). Gold 24K-O is the more ductile: elongation 45% versus 30% for Gold 24K-F.
Gold 24K-OChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Gold 24K-F vs Gold 24K-O: 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
Reduction in Area
Shear Strength
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 78 GPa11.3 Msi · Shear Modulus 27 GPa3.9 Msi · Bulk Modulus 173 GPa25.1 Msi · Poisson's Ratio 0.42
Physical
Density and transition temperatures.
Same in both: Density 19.32 g/cm³0.7 lb/in³ · Melting Point (Solidus) 1,064°C1,948 °F · Liquidus Temperature 1,064°C1,948 °F
Thermal
How each material carries heat and how hot it can run.
Same in both: Thermal Conductivity 318 W/m·K184 BTU/hr·ft·°F · Specific Heat Capacity 129 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.2 µm/m·K7.9 µin/in·°F · Latent Heat of Fusion 64 J/g27.4 BTU/lb · Max Service Temperature (continuous) 700°C1,292 °F · Min Service Temperature -269°C-452 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 71 % IACS · Electrical Resistivity 2.44×10⁻⁸ Ω·m0.961 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) 0.25 V · Corrosion Resistance 100 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Machinability 40 / 100 · Weldability 85 / 100 · Castability 88 / 100 · Brazeability / Solderability 95 / 100 · Polishability 95 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 260,000 MJ/kg1.12×10⁸ BTU/lb · Embodied Carbon (primary production) 25,000 kg CO₂/kg · Embodied Water 250,000 L/kg29,957 gal/lb · Typical Recycled Content 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.
Gold 24K-F vs Gold 24K-O — frequently asked
Is Gold 24K-O stronger than Gold 24K-F?
Yes. Gold 24K-O has a typical yield strength of 30 MPa (4.35 ksi) against 28 MPa (4.06 ksi) for Gold 24K-F — about 7% more. Tensile strength is 125 MPa (18.1 ksi) vs 105 MPa (15.2 ksi).
Which condition does FabDigit quote by default, F or O?
O is the default Gold 24K condition in the FabDigit quote flow. 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.
When should I choose Gold 24K-F over Gold 24K-O?
Pick Gold 24K-O when strength drives the design, or when the part is bent, formed or impact-loaded.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Gold 24K-F and Gold 24K-O 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.