Solder & Low-Melting Alloy Bi57Sn42Ag1 vs Bi58Sn42
Solder & Low-Melting Alloy · grade comparison
Solder & Low-Melting Alloy Bi57Sn42Ag1 and Bi58Sn42 are both solder & low-melting alloy grades. Both yield at about 40 MPa — strength does not separate them. Bi58Sn42 is the more ductile: elongation 40% versus 35% for Bi57Sn42Ag1.
Bi58Sn42Choose it when the part is bent, formed or impact-loaded.
Bi57Sn42Ag1 vs Bi58Sn42: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all solder & low-melting alloy 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 solder & low-melting alloy 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)
Same in both: Elastic (Young's) Modulus 42 GPa6.1 Msi · Shear Modulus 16 GPa2.3 Msi · Bulk Modulus 41 GPa5.9 Msi · Poisson's Ratio 0.33 · Hardness, Brinell 22 HB · Hardness, Vickers 23 HV
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Min Service Temperature
Same in both: Thermal Conductivity 19 W/m·K11 BTU/hr·ft·°F · Thermal Expansion (CTE, 20–100 °C) 15 µm/m·K8.3 µin/in·°F · Latent Heat of Fusion 45 J/g19.3 BTU/lb · Max Service Temperature (continuous) 80°C176 °F
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 5 % IACS · Electrical Resistivity 3.4×10⁻⁷ Ω·m13.4 µΩ·in
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
Formability (cold)
Polishability
Same in both: Weldability 20 / 100 · Castability 90 / 100 · Brazeability / Solderability 95 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Strength (UTS / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Specific Stiffness (E / density) 4.9 MN·m/kg · Thermal Shock Resistance Index 2
Strength versus weight
Yield strength against density for every solder & low-melting alloy grade in the FabDigit library; the compared grades are highlighted. Up and left is stronger for its weight.
Manufacturing and finishing
| Capability | Bi57Sn42Ag1 | Bi58Sn42 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Bi57Sn42Ag1 vs Bi58Sn42 — frequently asked
What is the difference between Bi57Sn42Ag1 and Bi58Sn42?
Solder & Low-Melting Alloy Bi57Sn42Ag1 and Bi58Sn42 are both solder & low-melting alloy grades. Both yield at about 40 MPa — strength does not separate them. Bi58Sn42 is the more ductile: elongation 40% versus 35% for Bi57Sn42Ag1.
Which is cheaper, Bi57Sn42Ag1 or Bi58Sn42?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Bi57Sn42Ag1 or Bi58Sn42?
Bi57Sn42Ag1. Its machinability rates fair (35/100) against poor (30/100) for Bi58Sn42.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Bi57Sn42Ag1 and Bi58Sn42 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.