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Solder & Low-Melting Alloy B23 Grade 13 vs B23 Grade 14

Solder & Low-Melting Alloy · grade comparison

Solder & Low-Melting Alloy B23 Grade 13 and B23 Grade 14 are both solder & low-melting alloy grades. Both yield at about 30 MPa — strength does not separate them. B23 Grade 13 is the more ductile: elongation 6% versus 3% for B23 Grade 14. B23 Grade 14 is lighter (9.73 g/cm³ vs 10.24 g/cm³ for B23 Grade 13). On the shop floor, B23 Grade 14 machines more easily (excellent vs very good).

B23 Grade 13Choose it when the part is bent, formed or impact-loaded.

B23 Grade 14Choose it when weight is the constraint, or when the part is machined in volume.

B23 Grade 13 vs B23 Grade 14: properties

B23 Grade 13B23 Grade 14

Mechanical

Strength, stiffness, ductility and hardness at room temperature.

Shear Modulus

10.5 GPa1.5 Msi
10.3 GPa1.5 Msi

Bulk Modulus

44 GPa6.4 Msi
42 GPa6.1 Msi

Elongation at Break

6%
3%

Compressive Strength

108 MPa15.7 ksi
105 MPa15.2 ksi

Shear Strength

40 MPa5.8 ksi
32 MPa4.6 ksi

Fatigue Strength (Endurance Limit)

20 MPa2.9 ksi
22 MPa3.2 ksi

Hardness, Brinell

22 HB
21 HB

Charpy V-Notch Impact (RT)

—
2 J1.5 ft·lbf

Hardness, Vickers

—
22 HV

Same in both: Elastic (Young's) Modulus 29 GPa4.2 Msi · Poisson's Ratio 0.42 · Tensile Strength (Ultimate) 65 MPa9.4 ksi · Yield Strength (0.2% offset) 30 MPa4.4 ksi

Physical

Density and transition temperatures.

Density

10.24 g/cm³0.37 lb/in³
9.73 g/cm³0.35 lb/in³

Melting Point (Solidus)

240°C464 °F
237°C459 °F

Liquidus Temperature

258°C496 °F
270°C518 °F

Thermal

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

Specific Heat Capacity

145 J/kg·K0.03 BTU/lb·°F
150 J/kg·K0.04 BTU/lb·°F

Thermal Expansion (CTE, 20–100 °C)

24 µm/m·K13.3 µin/in·°F
25 µm/m·K13.9 µin/in·°F

Latent Heat of Fusion

36 J/g15.5 BTU/lb
42 J/g18.1 BTU/lb

Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F · Max Service Temperature (continuous) 120°C248 °F · Min Service Temperature -50°C-58 °F

Electrical

Conductivity and insulation.

Electrical Conductivity

6.6 % IACS
6 % IACS

Electrical Resistivity

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

Chemical & Environmental

Corrosion and environmental resistance (0–100 scores).

Galvanic Potential (seawater, vs SCE)

-0.53 V
-0.55 V

Same in both: Corrosion Resistance 45 / 100

Manufacturability

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

Machinability

80 / 100
92 / 100

Weldability

15 / 100
10 / 100

Formability (cold)

25 / 100
20 / 100

Castability

92 / 100
90 / 100

Machinability Rating (AISI 1212 = 100 %)

—
160%

Same in both: Brazeability / Solderability 90 / 100 · Polishability 60 / 100

Sustainability

Primary-production footprint per kilogram.

Embodied Energy (primary production)

25 MJ/kg10,748 BTU/lb
30 MJ/kg12,898 BTU/lb

Embodied Carbon (primary production)

1.9 kg CO₂/kg
2.1 kg CO₂/kg

Embodied Water

180 L/kg21.6 gal/lb
80 L/kg9.6 gal/lb

Typical Recycled Content

65%
60%

Common Calculations

Ratios derived from the values above.

Specific Strength (UTS / density)

6 kN·m/kg
7 kN·m/kg

Specific Stiffness (E / density)

2.8 MN·m/kg
3 MN·m/kg

Thermal Diffusivity

16.2 mm²/s
16.4 mm²/s

Same in both: Modulus of Resilience 16 kJ/m³ · Thermal Shock Resistance Index 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 13B23 Grade 14

Manufacturing and finishing

CapabilityB23 Grade 13B23 Grade 14
Default condition——
Relative cost$$$$ High$$$$ High
Min. machined wall——
Best machined surface——

B23 Grade 13 vs B23 Grade 14 — frequently asked

What is the difference between B23 Grade 13 and B23 Grade 14?

Solder & Low-Melting Alloy B23 Grade 13 and B23 Grade 14 are both solder & low-melting alloy grades. Both yield at about 30 MPa — strength does not separate them. B23 Grade 13 is the more ductile: elongation 6% versus 3% for B23 Grade 14.

Which is cheaper, B23 Grade 13 or B23 Grade 14?

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

Which is easier to machine, B23 Grade 13 or B23 Grade 14?

B23 Grade 14. Its machinability rates excellent (92/100) against very good (80/100) for B23 Grade 13; for welding the order is B23 Grade 13 first (poor, 15/100) then B23 Grade 14 (not recommended, 10/100).

Ready to make it?

Upload a CAD file and FabDigit prices the part in B23 Grade 13 and B23 Grade 14 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.