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Solder & Low-Melting Alloy Antimonial Lead 6% Sb vs B23 Grade 10

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Antimonial Lead 6% Sb and B23 Grade 10 are both solder & low-melting alloy grades. Antimonial Lead 6% Sb is the stronger of the two: yield strength 30 MPa (4.35 ksi) against 26 MPa (3.77 ksi) for B23 Grade 10, about 15% more. Antimonial Lead 6% Sb is the more ductile: elongation 25% versus 3% for B23 Grade 10, and B23 Grade 10 is harder (21 HB vs 14 HB). B23 Grade 10 is lighter (10 g/cm³ vs 10.88 g/cm³ for Antimonial Lead 6% Sb) and B23 Grade 10 is stiffer (28 GPa vs 17 GPa). On the shop floor, B23 Grade 10 machines more easily (excellent vs very good), Antimonial Lead 6% Sb welds better (very good vs poor), and Antimonial Lead 6% Sb sits in a lower cost tier (standard, $$) than B23 Grade 10 (premium, $$$).

Antimonial Lead 6% SbChoose it when strength drives the design, or when the part is bent, formed or impact-loaded.

B23 Grade 10Choose it when weight is the constraint, or when the part sees heat.

Antimonial Lead 6% Sb vs B23 Grade 10: properties

Antimonial Lead 6% SbB23 Grade 10

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

17 GPa2.5 Msi
28 GPa4.1 Msi

Shear Modulus

6.2 GPa0.9 Msi
10 GPa1.5 Msi

Bulk Modulus

44 GPa6.4 Msi
40 GPa5.8 Msi

Tensile Strength (Ultimate)

55 MPa8 ksi
60 MPa8.7 ksi

Yield Strength (0.2% offset)

30 MPa4.4 ksi
26 MPa3.8 ksi

Elongation at Break

25%
3%

Compressive Strength

45 MPa6.5 ksi
108 MPa15.7 ksi

Shear Strength

40 MPa5.8 ksi
35 MPa5.1 ksi

Fatigue Strength (Endurance Limit)

14 MPa2 ksi
20 MPa2.9 ksi

Hardness, Brinell

14 HB
21 HB

Hardness, Vickers

15 HV
22 HV

Charpy V-Notch Impact (RT)

—
2 J1.5 ft·lbf

Same in both: Poisson's Ratio 0.42

Physical

Density and transition temperatures.

Density

10.88 g/cm³0.39 lb/in³
10 g/cm³0.36 lb/in³

Melting Point (Solidus)

252°C486 °F
240°C464 °F

Liquidus Temperature

296°C565 °F
270°C518 °F

Thermal

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

Thermal Conductivity

25 W/m·K14.4 BTU/hr·ft·°F
24 W/m·K13.9 BTU/hr·ft·°F

Specific Heat Capacity

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

Thermal Expansion (CTE, 20–100 °C)

27 µm/m·K15 µin/in·°F
24 µm/m·K13.3 µin/in·°F

Latent Heat of Fusion

26 J/g11.2 BTU/lb
42 J/g18.1 BTU/lb

Max Service Temperature (continuous)

100°C212 °F
120°C248 °F

Same in both: Min Service Temperature -50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

5.9 % IACS
5.7 % IACS

Electrical Resistivity

2.9×10⁻⁷ Ω·m11.4 µΩ·in
3×10⁻⁷ Ω·m11.8 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Corrosion Resistance

60 / 100
40 / 100

Same in both: Galvanic Potential (seawater, vs SCE) -0.55 V

Manufacturability

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

Machinability

78 / 100
90 / 100

Machinability Rating (AISI 1212 = 100 %)

200%
90%

Weldability

70 / 100
15 / 100

Formability (cold)

65 / 100
20 / 100

Polishability

30 / 100
60 / 100

Same in both: Castability 90 / 100 · Brazeability / Solderability 85 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

27 MJ/kg11,608 BTU/lb
21 MJ/kg9,028 BTU/lb

Embodied Carbon (primary production)

2.1 kg CO₂/kg
1.8 kg CO₂/kg

Embodied Water

110 L/kg13.2 gal/lb
75 L/kg9 gal/lb

Typical Recycled Content

70%
65%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

5 kN·m/kg
6 kN·m/kg

Specific Stiffness (E / density)

1.6 MN·m/kg
2.8 MN·m/kg

Modulus of Resilience

26 kJ/m³
12 kJ/m³

Thermal Diffusivity

17.4 mm²/s
16.4 mm²/s

Thermal Shock Resistance Index

3
2

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 10Antimonial Lead 6% Sb

Manufacturing and finishing

CapabilityAntimonial Lead 6% SbB23 Grade 10
Default condition——
Relative cost$$ Standard$$$ Premium
Min. machined wall——
Best machined surface——

Antimonial Lead 6% Sb vs B23 Grade 10 — frequently asked

Is Antimonial Lead 6% Sb stronger than B23 Grade 10?

Yes. Antimonial Lead 6% Sb has a typical yield strength of 30 MPa (4.35 ksi) against 26 MPa (3.77 ksi) for B23 Grade 10 — about 15% more. Tensile strength is 55 MPa (7.98 ksi) vs 60 MPa (8.7 ksi).

Which is cheaper, Antimonial Lead 6% Sb or B23 Grade 10?

Antimonial Lead 6% Sb 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, Antimonial Lead 6% Sb or B23 Grade 10?

B23 Grade 10. Its machinability rates excellent (90/100) against very good (78/100) for Antimonial Lead 6% Sb; for welding the order is Antimonial Lead 6% Sb first (very good, 70/100) then B23 Grade 10 (poor, 15/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Antimonial Lead 6% Sb and B23 Grade 10 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.