Solder & Low-Melting Alloy Sn60Pb39Cu1 vs Sn95Sb5
Solder & Low-Melting Alloy · grade comparison
Solder & Low-Melting Alloy Sn60Pb39Cu1 and Sn95Sb5 are both solder & low-melting alloy grades. Sn60Pb39Cu1 is the stronger of the two: tensile strength 52 MPa (7.54 ksi) against 40 MPa (5.8 ksi) for Sn95Sb5, about 30% more. Sn60Pb39Cu1 is harder — 16 HB against 13 HB for Sn95Sb5 — which matters for wear surfaces and threads. Sn95Sb5 is lighter (7.25 g/cm³ vs 8.5 g/cm³ for Sn60Pb39Cu1) and Sn95Sb5 is stiffer (48 GPa vs 30 GPa). On the shop floor, Sn95Sb5 machines more easily (30 vs 20 out of 100).
Sn60Pb39Cu1Choose it when strength drives the design, or when surface hardness matters.
Sn95Sb5Choose it when weight is the constraint, or when the part sees heat.
Sn60Pb39Cu1 vs Sn95Sb5: 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.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Yield Strength (0.2% offset) 30 MPa4.4 ksi
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)
Min Service Temperature
Electrical
Conductivity and insulation.
Same in both: Electrical Conductivity 11.5 % IACS · Electrical Resistivity 1.5×10⁻⁷ Ω·m5.91 µΩ·in
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Corrosion Resistance
Same in both: Galvanic Potential (seawater, vs SCE) -0.5 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Formability (cold)
Castability
Brazeability / Solderability
Polishability
Same in both: Weldability 20 / 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 Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Thermal Shock Resistance Index
Same in both: Specific Strength (UTS / density) 6 kN·m/kg
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 | Sn60Pb39Cu1 | Sn95Sb5 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Sn60Pb39Cu1 vs Sn95Sb5 — frequently asked
Is Sn60Pb39Cu1 stronger than Sn95Sb5?
Yes. Sn60Pb39Cu1 has a typical tensile strength of 52 MPa (7.54 ksi) against 40 MPa (5.8 ksi) for Sn95Sb5 — about 30% more.
Which is cheaper, Sn60Pb39Cu1 or Sn95Sb5?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Sn60Pb39Cu1 or Sn95Sb5?
Sn95Sb5, by a small margin. Both rate poor for machinability — 30/100 against 20/100 for Sn60Pb39Cu1.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Sn60Pb39Cu1 and Sn95Sb5 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.