Precious Metal 22K-ANN vs 22K-H02
Precious Metal · 22K temper comparison
22K-ANN and 22K-H02 are two conditions of the same precious metal grade, 22K: ANN (annealed) versus H02 (half hard). The chemistry is identical, so every difference below comes from the condition. 22K-H02 is the stronger of the two: yield strength 250 MPa (36.3 ksi) against 75 MPa (10.9 ksi) for 22K-ANN, about 3.3 times as much; tensile strength follows at 320 MPa (46.4 ksi) vs 220 MPa (31.9 ksi). In exchange, 22K-ANN is the more ductile: elongation 35% versus 8% for 22K-H02, and 22K-H02 is harder (95 HB vs 52 HB). 22K-ANN runs hotter in service (400°C vs 250°C continuous). On the shop floor, 22K-H02 machines more easily (good vs fair).
22K-ANNChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
22K-H02Choose it when strength drives the design, or when the part is machined in volume.
22K-ANN vs 22K-H02: 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
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 78 GPa11.3 Msi · Shear Modulus 28 GPa4.1 Msi · Bulk Modulus 168 GPa24.4 Msi · Poisson's Ratio 0.42
Physical
Density and transition temperatures.
Same in both: Density 17.8 g/cm³0.64 lb/in³ · Melting Point (Solidus) 940°C1,724 °F · Liquidus Temperature 965°C1,769 °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 133 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.6 µm/m·K8.1 µin/in·°F · Latent Heat of Fusion 63 J/g27.1 BTU/lb · Min Service Temperature -200°C-328 °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) 0.25 V · 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)
Same in both: Castability 85 / 100 · Brazeability / Solderability 95 / 100 · Polishability 92 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 200,000 MJ/kg8.6×10⁷ BTU/lb · Embodied Carbon (primary production) 14,000 kg CO₂/kg · Embodied Water 150,000 L/kg17,974 gal/lb · Typical Recycled Content 30%
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.
22K-ANN vs 22K-H02 — frequently asked
Is 22K-H02 stronger than 22K-ANN?
Yes. 22K-H02 has a typical yield strength of 250 MPa (36.3 ksi) against 75 MPa (10.9 ksi) for 22K-ANN — about 3.3 times as much. Tensile strength is 320 MPa (46.4 ksi) vs 220 MPa (31.9 ksi).
Which condition does FabDigit quote by default, ANN or H02?
ANN is the default 22K 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.
Which is easier to machine, 22K-ANN or 22K-H02?
22K-H02. Its machinability rates good (62/100) against fair (50/100) for 22K-ANN; for welding the order is 22K-ANN first (excellent, 85/100) then 22K-H02 (very good, 78/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in 22K-ANN and 22K-H02 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.