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Solder & Low-Melting Alloy Chemical Lead vs Corroding Lead

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Chemical Lead and Corroding Lead are both solder & low-melting alloy grades. Chemical Lead is the stronger of the two: tensile strength 17 MPa (2.47 ksi) against 13 MPa (1.89 ksi) for Corroding Lead, about 31% more. Chemical Lead is the more ductile: elongation 50% versus 35% for Corroding Lead. On the shop floor, Chemical Lead welds better (very good vs good).

Chemical LeadChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

Chemical Lead vs Corroding Lead: properties

Chemical LeadCorroding Lead

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Bulk Modulus

46 GPa6.6 Msi
46 GPa6.7 Msi

Poisson's Ratio

0.44
0.43

Tensile Strength (Ultimate)

17 MPa2.5 ksi
13 MPa1.9 ksi

Elongation at Break

50%
35%

Hardness, Vickers

5 HV
—

Same in both: Elastic (Young's) Modulus 14 GPa2 Msi · Shear Modulus 5.6 GPa0.81 Msi · Yield Strength (0.2% offset) 6 MPa0.87 ksi · Shear Strength 13 MPa1.9 ksi · Fatigue Strength (Endurance Limit) 3 MPa0.44 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

34.5 W/m·K19.9 BTU/hr·ft·°F
35 W/m·K20.2 BTU/hr·ft·°F

Thermal Expansion (CTE, 20–100 °C)

29 µm/m·K16.1 µin/in·°F
29.3 µm/m·K16.3 µin/in·°F

Same in both: Specific Heat Capacity 129 J/kg·K0.03 BTU/lb·°F · Latent Heat of Fusion 23 J/g10 BTU/lb · Max Service Temperature (continuous) 100°C212 °F · Min Service Temperature -100°C-148 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

7.8 % IACS
8.4 % IACS

Electrical Resistivity

2.13×10⁻⁷ Ω·m8.39 µΩ·in
2.06×10⁻⁷ Ω·m8.11 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.52 V
-0.55 V

Corrosion Resistance

70 / 100
68 / 100

Manufacturability

FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.

Weldability

75 / 100
60 / 100

Brazeability / Solderability

90 / 100
95 / 100

Polishability

25 / 100
20 / 100

Same in both: Machinability 55 / 100 · Formability (cold) 95 / 100 · Castability 90 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

25 MJ/kg10,748 BTU/lb
22 MJ/kg9,458 BTU/lb

Embodied Carbon (primary production)

1.9 kg CO₂/kg
1.8 kg CO₂/kg

Embodied Water

90 L/kg10.8 gal/lb
80 L/kg9.6 gal/lb

Typical Recycled Content

60%
55%

Common Calculations

Ratios derived from the values above.

Thermal Diffusivity

23.6 mm²/s
23.9 mm²/s

Same in both: Specific Strength (UTS / density) 1 kN·m/kg · Specific Stiffness (E / density) 1.2 MN·m/kg · Modulus of Resilience 1 kJ/m³ · Thermal Shock Resistance Index 1

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.

125102050891011Density (g/cm³)Yield strength (MPa) — log scaleCorroding LeadChemical Lead

Manufacturing and finishing

CapabilityChemical LeadCorroding Lead
Default condition——
Relative cost$$ Standard$$ Standard
Min. machined wall——
Best machined surface——

Chemical Lead vs Corroding Lead — frequently asked

Is Chemical Lead stronger than Corroding Lead?

Yes. Chemical Lead has a typical tensile strength of 17 MPa (2.47 ksi) against 13 MPa (1.89 ksi) for Corroding Lead — about 31% more.

Which is cheaper, Chemical Lead or Corroding Lead?

Both sit in the same relative cost tier ($$, standard); the part price will be decided by machining time, tolerance and quantity rather than by the material.

Which welds better, Chemical Lead or Corroding Lead?

Chemical Lead. Its weldability rates very good (75/100) against good (60/100) for Corroding Lead.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Chemical Lead and Corroding Lead 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.