Precious Metal AgSnO2In2O3 vs B631 Class B
Precious Metal · grade comparison
Precious Metal AgSnO2In2O3 and B631 Class B are both precious metal grades. B631 Class B is the stronger of the two: yield strength 330 MPa (47.9 ksi) against 205 MPa (29.7 ksi) for AgSnO2In2O3, about 61% more; tensile strength follows at 450 MPa (65.3 ksi) vs 280 MPa (40.6 ksi). In exchange, AgSnO2In2O3 is the more ductile: elongation 9% versus 1.5% for B631 Class B, and B631 Class B is harder (150 HB vs 90 HB). AgSnO2In2O3 is lighter (9.95 g/cm³ vs 14.6 g/cm³ for B631 Class B) and B631 Class B is stiffer (190 GPa vs 88 GPa). On the shop floor, AgSnO2In2O3 machines more easily (fair vs poor) and AgSnO2In2O3 welds better (poor vs not recommended).
AgSnO2In2O3Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
B631 Class BChoose it when strength drives the design, or when the part sees heat.
AgSnO2In2O3 vs B631 Class B: 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
Shear Strength
Hardness, Brinell
Hardness, Vickers
Compressive Strength
Hardness, Rockwell B
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
Max Service Temperature (continuous)
Same in both: Min Service Temperature -60°C-76 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Galvanic Potential (seawater, vs SCE)
Corrosion Resistance
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Brazeability / Solderability
Machinability Rating (AISI 1212 = 100 %)
Same in both: Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 40%
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 | AgSnO2In2O3 | B631 Class B |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
AgSnO2In2O3 vs B631 Class B — frequently asked
Is B631 Class B stronger than AgSnO2In2O3?
Yes. B631 Class B has a typical yield strength of 330 MPa (47.9 ksi) against 205 MPa (29.7 ksi) for AgSnO2In2O3 — about 61% more. Tensile strength is 450 MPa (65.3 ksi) vs 280 MPa (40.6 ksi).
Which is cheaper, AgSnO2In2O3 or B631 Class B?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, AgSnO2In2O3 or B631 Class B?
AgSnO2In2O3. Its machinability rates fair (40/100) against poor (25/100) for B631 Class B; for welding the order is AgSnO2In2O3 first (poor, 30/100) then B631 Class B (not recommended, 10/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in AgSnO2In2O3 and B631 Class B 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.