Precious Metal AuNi5-H vs AuNi5-SR
Precious Metal · AuNi5 temper comparison
AuNi5-H and AuNi5-SR are two conditions of the same precious metal grade, AuNi5: H (hardened) versus SR (stress relieved). The chemistry is identical, so every difference below comes from the condition. AuNi5-SR is the stronger of the two: yield strength 650 MPa (94.3 ksi) against 610 MPa (88.5 ksi) for AuNi5-H, about 7% more. AuNi5-SR runs hotter in service (230°C vs 200°C continuous).
AuNi5-SRChoose it when strength drives the design, or when the part sees heat.
AuNi5-H vs AuNi5-SR: 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)
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 105 GPa15.2 Msi · Shear Modulus 38 GPa5.5 Msi · Bulk Modulus 175 GPa25.4 Msi · Poisson's Ratio 0.39 · Elongation at Break 3%
Physical
Density and transition temperatures.
Same in both: Density 18.3 g/cm³0.66 lb/in³ · Melting Point (Solidus) 990°C1,814 °F · Liquidus Temperature 1,020°C1,868 °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 140 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 14.3 µm/m·K7.9 µin/in·°F · Latent Heat of Fusion 68 J/g29.2 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) 0.22 V · Corrosion Resistance 94 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Formability (cold)
Same in both: Weldability 60 / 100 · Castability 70 / 100 · Brazeability / Solderability 85 / 100 · Polishability 92 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 185,000 MJ/kg7.95×10⁷ BTU/lb · Embodied Carbon (primary production) 15,000 kg CO₂/kg · Embodied Water 250,000 L/kg29,957 gal/lb · Typical Recycled Content 40%
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.
AuNi5-H vs AuNi5-SR — frequently asked
Is AuNi5-SR stronger than AuNi5-H?
Yes. AuNi5-SR has a typical yield strength of 650 MPa (94.3 ksi) against 610 MPa (88.5 ksi) for AuNi5-H — about 7% more. Tensile strength is 720 MPa (104 ksi) vs 700 MPa (102 ksi).
Which condition does FabDigit quote by default, H or SR?
H is the default AuNi5 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 AuNi5-H over AuNi5-SR?
Pick AuNi5-SR when strength drives the design, or when the part sees heat.
Ready to make it?
Upload a CAD file and FabDigit prices the part in AuNi5-H and AuNi5-SR 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.