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

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Antimonial Lead 6% and B23 Grade 10 are both solder & low-melting alloy grades. B23 Grade 10 is the stronger of the two: tensile strength 60 MPa (8.7 ksi) against 50 MPa (7.25 ksi) for Antimonial Lead 6%, about 20% more. In exchange, Antimonial Lead 6% is the more ductile: elongation 24% versus 3% for B23 Grade 10, and B23 Grade 10 is harder (21 HB vs 13 HB). B23 Grade 10 is lighter (10 g/cm³ vs 10.88 g/cm³ for Antimonial Lead 6%) 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) and Antimonial Lead 6% welds better (good vs poor).

Antimonial Lead 6%Choose it when the part is bent, formed or impact-loaded, or when it will be welded.

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

Antimonial Lead 6% vs B23 Grade 10: properties

Antimonial Lead 6%B23 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

Poisson's Ratio

0.43
0.42

Tensile Strength (Ultimate)

50 MPa7.3 ksi
60 MPa8.7 ksi

Yield Strength (0.2% offset)

25 MPa3.6 ksi
26 MPa3.8 ksi

Elongation at Break

24%
3%

Reduction in Area

30%
—

Shear Strength

38 MPa5.5 ksi
35 MPa5.1 ksi

Fatigue Strength (Endurance Limit)

13 MPa1.9 ksi
20 MPa2.9 ksi

Hardness, Brinell

13 HB
21 HB

Hardness, Vickers

14 HV
22 HV

Compressive Strength

—
108 MPa15.7 ksi

Charpy V-Notch Impact (RT)

—
2 J1.5 ft·lbf

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

281°C538 °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

130 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

24 J/g10.3 BTU/lb
42 J/g18.1 BTU/lb

Max Service Temperature (continuous)

100°C212 °F
120°C248 °F

Min Service Temperature

-60°C-76 °F
-50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

6 % 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

62 / 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

80 / 100
90 / 100

Machinability Rating (AISI 1212 = 100 %)

120%
90%

Weldability

60 / 100
15 / 100

Formability (cold)

50 / 100
20 / 100

Castability

88 / 100
90 / 100

Brazeability / Solderability

78 / 100
85 / 100

Polishability

25 / 100
60 / 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)

2.2 kg CO₂/kg
1.8 kg CO₂/kg

Embodied Water

130 L/kg15.6 gal/lb
75 L/kg9 gal/lb

Same in both: Typical Recycled Content 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

18 kJ/m³
12 kJ/m³

Thermal Diffusivity

17.7 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%

Manufacturing and finishing

CapabilityAntimonial Lead 6%B23 Grade 10
Default condition——
Relative cost$$$ Premium$$$ Premium
Min. machined wall——
Best machined surface——

Antimonial Lead 6% vs B23 Grade 10 — frequently asked

Is B23 Grade 10 stronger than Antimonial Lead 6%?

Yes. B23 Grade 10 has a typical tensile strength of 60 MPa (8.7 ksi) against 50 MPa (7.25 ksi) for Antimonial Lead 6% — about 20% more.

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

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

Which is easier to machine, Antimonial Lead 6% or B23 Grade 10?

B23 Grade 10. Its machinability rates excellent (90/100) against very good (80/100) for Antimonial Lead 6%; for welding the order is Antimonial Lead 6% first (good, 60/100) then B23 Grade 10 (poor, 15/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in Antimonial Lead 6% 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.