Solder & Low-Melting Alloy Pb60Sn40 vs Pb69Sn30Sb1
Solder & Low-Melting Alloy · grade comparison
Solder & Low-Melting Alloy Pb60Sn40 and Pb69Sn30Sb1 are both solder & low-melting alloy grades. Pb69Sn30Sb1 is the stronger of the two: yield strength 26 MPa (3.77 ksi) against 24 MPa (3.48 ksi) for Pb60Sn40, about 8% more; tensile strength follows at 42 MPa (6.09 ksi) vs 38 MPa (5.51 ksi). In exchange, Pb60Sn40 is the more ductile: elongation 40% versus 35% for Pb69Sn30Sb1, and Pb69Sn30Sb1 is harder (13 HB vs 12 HB). Pb60Sn40 is lighter (9.29 g/cm³ vs 9.7 g/cm³ for Pb69Sn30Sb1) and Pb60Sn40 conducts electricity better (10.1 % IACS vs 9 % IACS).
Pb60Sn40Choose it when the part is bent, formed or impact-loaded, or when weight is the constraint.
Pb69Sn30Sb1Choose it when strength drives the design.
Pb60Sn40 vs Pb69Sn30Sb1: 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
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Shear Strength
Hardness, Brinell
Compressive Strength
Hardness, Vickers
Same in both: Poisson's Ratio 0.4 · Fatigue Strength (Endurance Limit) 12 MPa1.7 ksi
Physical
Density and transition temperatures.
Density
Liquidus Temperature
Same in both: Melting Point (Solidus) 183°C361 °F
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
Min Service Temperature
Same in both: Max Service Temperature (continuous) 100°C212 °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) -0.5 V · Corrosion Resistance 40 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Castability
Brazeability / Solderability
Polishability
Same in both: Weldability 20 / 100 · Formability (cold) 90 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Same in both: Typical Recycled Content 55%
Common Calculations
Ratios derived from the values above.
Modulus of Resilience
Thermal Diffusivity
Same in both: Specific Strength (UTS / density) 4 kN·m/kg · Specific Stiffness (E / density) 2.6 MN·m/kg · Thermal Shock Resistance Index 3
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 | Pb60Sn40 | Pb69Sn30Sb1 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$$ High | $$$$ High |
| Min. machined wall | — | — |
| Best machined surface | — | — |
Pb60Sn40 vs Pb69Sn30Sb1 — frequently asked
Is Pb69Sn30Sb1 stronger than Pb60Sn40?
Yes. Pb69Sn30Sb1 has a typical yield strength of 26 MPa (3.77 ksi) against 24 MPa (3.48 ksi) for Pb60Sn40 — about 8% more. Tensile strength is 42 MPa (6.09 ksi) vs 38 MPa (5.51 ksi).
Which is cheaper, Pb60Sn40 or Pb69Sn30Sb1?
Both sit in the same relative cost tier ($$$$, high); the part price will be decided by machining time, tolerance and quantity rather than by the material.
Which is easier to machine, Pb60Sn40 or Pb69Sn30Sb1?
Pb69Sn30Sb1. Its machinability rates fair (35/100) against poor (30/100) for Pb60Sn40.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Pb60Sn40 and Pb69Sn30Sb1 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.