Precious Metal AuNi-H02 vs AuNi-O
Precious Metal · AuNi temper comparison
AuNi-H02 and AuNi-O are two conditions of the same precious metal grade, AuNi: H02 (half hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. AuNi-H02 is the stronger of the two: yield strength 480 MPa (69.6 ksi) against 180 MPa (26.1 ksi) for AuNi-O, about 167% more; tensile strength follows at 590 MPa (85.6 ksi) vs 400 MPa (58 ksi). In exchange, AuNi-O is the more ductile: elongation 30% versus 8% for AuNi-H02, and AuNi-H02 is harder (180 HV vs 125 HV). AuNi-O runs hotter in service (500°C vs 350°C continuous). On the shop floor, AuNi-H02 machines more easily (52 vs 35 out of 100).
AuNi-H02Choose it when strength drives the design, or when the part is machined in volume.
AuNi-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
AuNi-H02 vs AuNi-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
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 95 GPa13.8 Msi · Shear Modulus 35 GPa5.1 Msi · Bulk Modulus 175 GPa25.4 Msi · Poisson's Ratio 0.41
Physical
Density and transition temperatures.
Same in both: Density 18.3 g/cm³0.66 lb/in³ · Melting Point (Solidus) 955°C1,751 °F · Liquidus Temperature 975°C1,787 °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 145 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 75 J/g32.2 BTU/lb · Min Service Temperature -250°C-418 °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 96 / 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 70 / 100 · Brazeability / Solderability 90 / 100 · Polishability 95 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 240,000 MJ/kg1.03×10⁸ BTU/lb · Embodied Carbon (primary production) 24,000 kg CO₂/kg · Embodied Water 200,000 L/kg23,965 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.
AuNi-H02 vs AuNi-O — frequently asked
Is AuNi-H02 stronger than AuNi-O?
Yes. AuNi-H02 has a typical yield strength of 480 MPa (69.6 ksi) against 180 MPa (26.1 ksi) for AuNi-O — about 167% more. Tensile strength is 590 MPa (85.6 ksi) vs 400 MPa (58 ksi).
Which condition does FabDigit quote by default, H02 or O?
H04 is the default AuNi condition in the FabDigit quote flow (neither H02 nor O). 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, AuNi-H02 or AuNi-O?
AuNi-H02, by a small margin. Both rate fair for machinability — 52/100 against 35/100 for AuNi-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in AuNi-H02 and AuNi-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.