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

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy Antimonial Lead 6% Sb and B23 Grade 13 are both solder & low-melting alloy grades. B23 Grade 13 is the stronger of the two: tensile strength 65 MPa (9.43 ksi) against 55 MPa (7.98 ksi) for Antimonial Lead 6% Sb, about 18% more. In exchange, Antimonial Lead 6% Sb is the more ductile: elongation 25% versus 6% for B23 Grade 13, and B23 Grade 13 is harder (22 HB vs 14 HB). B23 Grade 13 is lighter (10.24 g/cm³ vs 10.88 g/cm³ for Antimonial Lead 6% Sb) and B23 Grade 13 is stiffer (29 GPa vs 17 GPa). On the shop floor, Antimonial Lead 6% Sb welds better (very good vs poor) and Antimonial Lead 6% Sb sits in a lower cost tier (standard, $$) than B23 Grade 13 (high, $$$$).

Antimonial Lead 6% SbChoose 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% Sb vs B23 Grade 13: properties

Antimonial Lead 6% SbB23 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

Tensile Strength (Ultimate)

55 MPa8 ksi
65 MPa9.4 ksi

Elongation at Break

25%
6%

Compressive Strength

45 MPa6.5 ksi
108 MPa15.7 ksi

Fatigue Strength (Endurance Limit)

14 MPa2 ksi
20 MPa2.9 ksi

Hardness, Brinell

14 HB
22 HB

Hardness, Vickers

15 HV
—

Same in both: Bulk Modulus 44 GPa6.4 Msi · Poisson's Ratio 0.42 · Yield Strength (0.2% offset) 30 MPa4.4 ksi · Shear Strength 40 MPa5.8 ksi

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

296°C565 °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

132 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

26 J/g11.2 BTU/lb
36 J/g15.5 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
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

60 / 100
45 / 100

Manufacturability

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

Machinability

78 / 100
80 / 100

Machinability Rating (AISI 1212 = 100 %)

200%
—

Weldability

70 / 100
15 / 100

Formability (cold)

65 / 100
25 / 100

Castability

90 / 100
92 / 100

Brazeability / Solderability

85 / 100
90 / 100

Polishability

30 / 100
60 / 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)

2.1 kg CO₂/kg
1.9 kg CO₂/kg

Embodied Water

110 L/kg13.2 gal/lb
180 L/kg21.6 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
16 kJ/m³

Thermal Diffusivity

17.4 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% Sb

Manufacturing and finishing

CapabilityAntimonial Lead 6% SbB23 Grade 13
Default condition——
Relative cost$$ Standard$$$$ High
Min. machined wall——
Best machined surface——

Antimonial Lead 6% Sb vs B23 Grade 13 — frequently asked

Is B23 Grade 13 stronger than Antimonial Lead 6% Sb?

Yes. B23 Grade 13 has a typical tensile strength of 65 MPa (9.43 ksi) against 55 MPa (7.98 ksi) for Antimonial Lead 6% Sb — about 18% more.

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

Antimonial Lead 6% Sb is the lower-cost material: it sits in the standard 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% Sb or B23 Grade 13?

Antimonial Lead 6% Sb. Its weldability rates very good (70/100) 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% Sb 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.