Precious Metal 70Ag-30Ni-H08 vs 70Ag-30Ni-O
Precious Metal · 70Ag-30Ni temper comparison
70Ag-30Ni-H08 and 70Ag-30Ni-O are two conditions of the same precious metal grade, 70Ag-30Ni: H08 (spring hard) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. 70Ag-30Ni-H08 is the stronger of the two: yield strength 430 MPa (62.4 ksi) against 110 MPa (16 ksi) for 70Ag-30Ni-O, about 3.9 times as much; tensile strength follows at 470 MPa (68.2 ksi) vs 260 MPa (37.7 ksi). In exchange, 70Ag-30Ni-O is the more ductile: elongation 25% versus 2% for 70Ag-30Ni-H08, and 70Ag-30Ni-H08 is harder (135 HV vs 60 HV). 70Ag-30Ni-H08 is stiffer (120 GPa vs 110 GPa) and 70Ag-30Ni-O runs hotter in service (250°C vs 180°C continuous). On the shop floor, 70Ag-30Ni-O welds better (very good vs good).
70Ag-30Ni-H08Choose it when strength drives the design.
70Ag-30Ni-OChoose it when the part is bent, formed or impact-loaded, or when the part sees heat.
70Ag-30Ni-H08 vs 70Ag-30Ni-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.
Elastic (Young's) Modulus
Shear Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Vickers
Same in both: Bulk Modulus 122 GPa17.7 Msi · Reduction in Area 55% · Compressive Strength 260 MPa37.7 ksi · Hardness, Brinell 58 HB
Physical
Density and transition temperatures.
Liquidus Temperature
Same in both: Density 9.95 g/cm³0.36 lb/in³ · Melting Point (Solidus) 961°C1,762 °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 295 J/kg·K0.07 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 17.5 µm/m·K9.7 µin/in·°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).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) 0.05 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Weldability
Formability (cold)
Brazeability / Solderability
Polishability
Same in both: Machinability 45 / 100 · Machinability Rating (AISI 1212 = 100 %) 35% · Castability 10 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Carbon (primary production)
Typical Recycled Content
Same in both: Embodied Energy (primary production) 1,100 MJ/kg472,915 BTU/lb · Embodied Water 1,500 L/kg180 gal/lb
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.
70Ag-30Ni-H08 vs 70Ag-30Ni-O — frequently asked
Is 70Ag-30Ni-H08 stronger than 70Ag-30Ni-O?
Yes. 70Ag-30Ni-H08 has a typical yield strength of 430 MPa (62.4 ksi) against 110 MPa (16 ksi) for 70Ag-30Ni-O — about 3.9 times as much. Tensile strength is 470 MPa (68.2 ksi) vs 260 MPa (37.7 ksi).
Which condition does FabDigit quote by default, H08 or O?
O is the default 70Ag-30Ni 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 welds better, 70Ag-30Ni-H08 or 70Ag-30Ni-O?
70Ag-30Ni-O. Its weldability rates very good (70/100) against good (55/100) for 70Ag-30Ni-H08.
Ready to make it?
Upload a CAD file and FabDigit prices the part in 70Ag-30Ni-H08 and 70Ag-30Ni-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.