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Solder & Low-Melting Alloy Antimonial Lead 6% vs B23 Grade 13

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Antimonial Lead 6% and B23 Grade 13 are both solder & low-melting alloy grades. B23 Grade 13 is the stronger of the two: yield strength 30 MPa (4.35 ksi) against 25 MPa (3.63 ksi) for Antimonial Lead 6%, about 20% more; tensile strength follows at 65 MPa (9.43 ksi) vs 50 MPa (7.25 ksi). In exchange, Antimonial Lead 6% is the more ductile: elongation 24% versus 6% for B23 Grade 13, and B23 Grade 13 is harder (22 HB vs 13 HB). B23 Grade 13 is lighter (10.24 g/cm³ vs 10.88 g/cm³ for Antimonial Lead 6%) and B23 Grade 13 is stiffer (29 GPa vs 17 GPa). On the shop floor, Antimonial Lead 6% welds better (good vs poor) and Antimonial Lead 6% sits in a lower cost tier (premium, $$$) than B23 Grade 13 (high, $$$$).

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

B23 Grade 13Choose it when strength drives the design, or when weight is the constraint.

Antimonial Lead 6% vs B23 Grade 13: properties

Antimonial Lead 6%B23 Grade 13

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Elastic (Young's) Modulus

17 GPa2.5 Msi
29 GPa4.2 Msi

Shear Modulus

6.2 GPa0.9 Msi
10.5 GPa1.5 Msi

Poisson's Ratio

0.43
0.42

Tensile Strength (Ultimate)

50 MPa7.3 ksi
65 MPa9.4 ksi

Yield Strength (0.2% offset)

25 MPa3.6 ksi
30 MPa4.4 ksi

Elongation at Break

24%
6%

Reduction in Area

30%
—

Shear Strength

38 MPa5.5 ksi
40 MPa5.8 ksi

Fatigue Strength (Endurance Limit)

13 MPa1.9 ksi
20 MPa2.9 ksi

Hardness, Brinell

13 HB
22 HB

Hardness, Vickers

14 HV
—

Compressive Strength

—
108 MPa15.7 ksi

Same in both: Bulk Modulus 44 GPa6.4 Msi

Physical

Density and transition temperatures.

Density

10.88 g/cm³0.39 lb/in³
10.24 g/cm³0.37 lb/in³

Melting Point (Solidus)

252°C486 °F
240°C464 °F

Liquidus Temperature

281°C538 °F
258°C496 °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
145 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
36 J/g15.5 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
6.6 % IACS

Electrical Resistivity

2.9×10⁻⁷ Ω·m11.4 µΩ·in
2.6×10⁻⁷ Ω·m10.2 µΩ·in

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.55 V
-0.53 V

Corrosion Resistance

62 / 100
45 / 100

Manufacturability

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

Machinability Rating (AISI 1212 = 100 %)

120%
—

Weldability

60 / 100
15 / 100

Formability (cold)

50 / 100
25 / 100

Castability

88 / 100
92 / 100

Brazeability / Solderability

78 / 100
90 / 100

Polishability

25 / 100
60 / 100

Same in both: Machinability 80 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

27 MJ/kg11,608 BTU/lb
25 MJ/kg10,748 BTU/lb

Embodied Carbon (primary production)

2.2 kg CO₂/kg
1.9 kg CO₂/kg

Embodied Water

130 L/kg15.6 gal/lb
180 L/kg21.6 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
16 kJ/m³

Thermal Diffusivity

17.7 mm²/s
16.2 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 13Antimonial Lead 6%

Manufacturing and finishing

CapabilityAntimonial Lead 6%B23 Grade 13
Default condition——
Relative cost$$$ Premium$$$$ High
Min. machined wall——
Best machined surface——

Antimonial Lead 6% vs B23 Grade 13 — frequently asked

Is B23 Grade 13 stronger than Antimonial Lead 6%?

Yes. B23 Grade 13 has a typical yield strength of 30 MPa (4.35 ksi) against 25 MPa (3.63 ksi) for Antimonial Lead 6% — about 20% more. Tensile strength is 65 MPa (9.43 ksi) vs 50 MPa (7.25 ksi).

Which is cheaper, Antimonial Lead 6% or B23 Grade 13?

Antimonial Lead 6% is the lower-cost material: it sits in the premium tier ($$$) while B23 Grade 13 is high ($$$$). Part price depends far more on geometry, tolerance and quantity than on raw stock — upload a CAD file for a live quote.

Which welds better, Antimonial Lead 6% or B23 Grade 13?

Antimonial Lead 6%. Its weldability rates good (60/100) against poor (15/100) for B23 Grade 13.

Ready to make it?

Upload a CAD file and FabDigit prices the part in Antimonial Lead 6% and B23 Grade 13 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.