Solder & Low-Melting Alloy Tellurium Lead Annealed vs Tellurium Lead-F
Solder & Low-Melting Alloy · Tellurium Lead temper comparison
Tellurium Lead Annealed and Tellurium Lead-F are two conditions of the same solder & low-melting alloy grade, Tellurium Lead: Annealed versus F (as fabricated). The chemistry is identical, so every difference below comes from the condition. Tellurium Lead Annealed is the stronger of the two: tensile strength 20 MPa (2.9 ksi) against 19 MPa (2.76 ksi) for Tellurium Lead-F, about 5% more. Tellurium Lead Annealed is the more ductile: elongation 50% versus 30% for Tellurium Lead-F. Tellurium Lead Annealed runs hotter in service (120°C vs 110°C continuous).
Tellurium Lead AnnealedChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.
Tellurium Lead Annealed vs Tellurium Lead-F: 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.
Tellurium Lead AnnealedTellurium Lead-F
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Tensile Strength (Ultimate)
Elongation at Break
Shear Strength
Fatigue Strength (Endurance Limit)
Same in both: Shear Modulus 5.4 GPa0.78 Msi · Bulk Modulus 45 GPa6.5 Msi · Poisson's Ratio 0.43 · Yield Strength (0.2% offset) 8 MPa1.2 ksi · Hardness, Brinell 5 HB
Physical
Density and transition temperatures.
Same in both: Density 11.34 g/cm³0.41 lb/in³ · Melting Point (Solidus) 327°C621 °F · Liquidus Temperature 328°C622 °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 129 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 29.3 µm/m·K16.3 µin/in·°F · Latent Heat of Fusion 23 J/g9.9 BTU/lb · Min Service Temperature -60°C-76 °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) -0.53 V
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Weldability
Formability (cold)
Same in both: Castability 85 / 100 · Brazeability / Solderability 90 / 100 · Polishability 20 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 26 MJ/kg11,178 BTU/lb · Embodied Carbon (primary production) 2 kg CO₂/kg · Embodied Water 110 L/kg13.2 gal/lb · Typical Recycled Content 40%
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.
Tellurium Lead Annealed vs Tellurium Lead-F — frequently asked
Is Tellurium Lead Annealed stronger than Tellurium Lead-F?
Yes. Tellurium Lead Annealed has a typical tensile strength of 20 MPa (2.9 ksi) against 19 MPa (2.76 ksi) for Tellurium Lead-F — about 5% more.
Which condition does FabDigit quote by default, Annealed or F?
Specify the condition in the material field or the drawing note; FabDigit prices the quote for the state you call out.
Which welds better, Tellurium Lead Annealed or Tellurium Lead-F?
Tellurium Lead Annealed. Its weldability rates very good (75/100) against very good (70/100) for Tellurium Lead-F.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Tellurium Lead Annealed and Tellurium Lead-F 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.