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Solder & Low-Melting Alloy B23 Grade 10 vs Chemical Lead

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy B23 Grade 10 and Chemical Lead are both solder & low-melting alloy grades. B23 Grade 10 is the stronger of the two: yield strength 26 MPa (3.77 ksi) against 6 MPa (0.87 ksi) for Chemical Lead, about 4.3 times as much; tensile strength follows at 60 MPa (8.7 ksi) vs 17 MPa (2.47 ksi). In exchange, Chemical Lead is the more ductile: elongation 50% versus 3% for B23 Grade 10, and B23 Grade 10 is harder (21 HB vs 5 HB). B23 Grade 10 is lighter (10 g/cm³ vs 11.34 g/cm³ for Chemical Lead) and B23 Grade 10 is stiffer (28 GPa vs 14 GPa). On the shop floor, B23 Grade 10 machines more easily (excellent vs good), Chemical Lead welds better (very good vs poor), and Chemical Lead sits in a lower cost tier (standard, $$) than B23 Grade 10 (premium, $$$).

B23 Grade 10Choose it when strength drives the design, or when weight is the constraint.

Chemical LeadChoose it when the part is bent, formed or impact-loaded, or when it will be welded.

B23 Grade 10 vs Chemical Lead: properties

B23 Grade 10Chemical Lead

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

28 GPa4.1 Msi
14 GPa2 Msi

Shear Modulus

10 GPa1.5 Msi
5.6 GPa0.81 Msi

Bulk Modulus

40 GPa5.8 Msi
46 GPa6.6 Msi

Poisson's Ratio

0.42
0.44

Tensile Strength (Ultimate)

60 MPa8.7 ksi
17 MPa2.5 ksi

Yield Strength (0.2% offset)

26 MPa3.8 ksi
6 MPa0.87 ksi

Elongation at Break

3%
50%

Compressive Strength

108 MPa15.7 ksi
—

Shear Strength

35 MPa5.1 ksi
13 MPa1.9 ksi

Fatigue Strength (Endurance Limit)

20 MPa2.9 ksi
3 MPa0.44 ksi

Charpy V-Notch Impact (RT)

2 J1.5 ft·lbf
—

Hardness, Brinell

21 HB
5 HB

Hardness, Vickers

22 HV
5 HV

Physical

Density and transition temperatures.

Density

10 g/cm³0.36 lb/in³
11.34 g/cm³0.41 lb/in³

Melting Point (Solidus)

240°C464 °F
327°C621 °F

Liquidus Temperature

270°C518 °F
328°C622 °F

Thermal

How each material carries heat and how hot it can run.

Thermal Conductivity

24 W/m·K13.9 BTU/hr·ft·°F
34.5 W/m·K19.9 BTU/hr·ft·°F

Specific Heat Capacity

146 J/kg·K0.03 BTU/lb·°F
129 J/kg·K0.03 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

24 µm/m·K13.3 µin/in·°F
29 µm/m·K16.1 µin/in·°F

Latent Heat of Fusion

42 J/g18.1 BTU/lb
23 J/g10 BTU/lb

Max Service Temperature (continuous)

120°C248 °F
100°C212 °F

Min Service Temperature

-50°C-58 °F
-100°C-148 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

5.7 % IACS
7.8 % IACS

Electrical Resistivity

3×10⁻⁷ Ω·m11.8 µΩ·in
2.13×10⁻⁷ Ω·m8.39 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.55 V
-0.52 V

Corrosion Resistance

40 / 100
70 / 100

Manufacturability

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

Machinability

90 / 100
55 / 100

Machinability Rating (AISI 1212 = 100 %)

90%
—

Weldability

15 / 100
75 / 100

Formability (cold)

20 / 100
95 / 100

Brazeability / Solderability

85 / 100
90 / 100

Polishability

60 / 100
25 / 100

Same in both: Castability 90 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

21 MJ/kg9,028 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

1.8 kg CO₂/kg
1.9 kg CO₂/kg

Embodied Water

75 L/kg9 gal/lb
90 L/kg10.8 gal/lb

Typical Recycled Content

65%
60%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

6 kN·m/kg
1 kN·m/kg

Specific Stiffness (E / density)

2.8 MN·m/kg
1.2 MN·m/kg

Modulus of Resilience

12 kJ/m³
1 kJ/m³

Thermal Diffusivity

16.4 mm²/s
23.6 mm²/s

Thermal Shock Resistance Index

2
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 scaleB23 Grade 10Chemical Lead

Manufacturing and finishing

CapabilityB23 Grade 10Chemical Lead
Default condition——
Relative cost$$$ Premium$$ Standard
Min. machined wall——
Best machined surface——

B23 Grade 10 vs Chemical Lead — frequently asked

Is B23 Grade 10 stronger than Chemical Lead?

Yes. B23 Grade 10 has a typical yield strength of 26 MPa (3.77 ksi) against 6 MPa (0.87 ksi) for Chemical Lead — about 4.3 times as much. Tensile strength is 60 MPa (8.7 ksi) vs 17 MPa (2.47 ksi).

Which is cheaper, B23 Grade 10 or Chemical Lead?

Chemical Lead is the lower-cost material: it sits in the standard tier ($$) while B23 Grade 10 is premium ($$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which is easier to machine, B23 Grade 10 or Chemical Lead?

B23 Grade 10. Its machinability rates excellent (90/100) against good (55/100) for Chemical Lead; for welding the order is Chemical Lead first (very good, 75/100) then B23 Grade 10 (poor, 15/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in B23 Grade 10 and Chemical 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.