Precious Metal 22K vs Dental Gold Type III
Precious Metal · grade comparison
Precious Metal 22K and Dental Gold Type III are both precious metal grades. Dental Gold Type III is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 75 MPa (10.9 ksi) for 22K, about 3.3 times as much; tensile strength follows at 420 MPa (60.9 ksi) vs 220 MPa (31.9 ksi). In exchange, 22K is the more ductile: elongation 35% versus 30% for Dental Gold Type III, and Dental Gold Type III is harder (125 HB vs 52 HB). Dental Gold Type III is lighter (15.6 g/cm³ vs 17.8 g/cm³ for 22K) and Dental Gold Type III is stiffer (95 GPa vs 78 GPa). On the shop floor, Dental Gold Type III machines more easily (good vs fair) and 22K welds better (excellent vs very good).
22KChoose it when the part is bent, formed or impact-loaded, or when it will be welded.
Dental Gold Type IIIChoose it when strength drives the design, or when weight is the constraint.
22K vs Dental Gold Type III: 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Same in both: Max Service Temperature (continuous) 400°C752 °F · Min Service Temperature -200°C-328 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Same in both: Corrosion Resistance 97 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
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.
Manufacturing and finishing
| Capability | 22K | Dental Gold Type III |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
22K vs Dental Gold Type III — frequently asked
Is Dental Gold Type III stronger than 22K?
Yes. Dental Gold Type III has a typical yield strength of 250 MPa (36.3 ksi) against 75 MPa (10.9 ksi) for 22K — about 3.3 times as much. Tensile strength is 420 MPa (60.9 ksi) vs 220 MPa (31.9 ksi).
Which is cheaper, 22K or Dental Gold Type III?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, 22K or Dental Gold Type III?
Dental Gold Type III. Its machinability rates good (60/100) against fair (50/100) for 22K; for welding the order is 22K first (excellent, 85/100) then Dental Gold Type III (very good, 75/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 22K and Dental Gold Type III 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.