Solder & Low-Melting Alloy B23 Grade 10 vs B23 Grade 15
Solder & Low-Melting Alloy · grade comparison
Solder & Low-Melting Alloy B23 Grade 10 and B23 Grade 15 are both solder & low-melting alloy grades. B23 Grade 15 is the stronger of the two: yield strength 45 MPa (6.53 ksi) against 26 MPa (3.77 ksi) for B23 Grade 10, about 73% more. In exchange, B23 Grade 10 is the more ductile: elongation 3% versus 2% for B23 Grade 15. B23 Grade 10 conducts electricity better (5.7 % IACS vs 5 % IACS).
B23 Grade 10Choose it when the part is bent, formed or impact-loaded.
B23 Grade 15Choose it when strength drives the design.
B23 Grade 10 vs B23 Grade 15: propertiesHow to read these bars
- One bar per material. A full bar is the highest value among all solder & low-melting alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
How to read these bars
- One bar per material. A full bar is the highest value among all solder & low-melting alloy grades in the FabDigit library; each bar is drawn as a share of that.
- The better value (by the usual engineering direction) is in bold. Rows with no direction — density, thermal conductivity — have no bold.
- Values are typical room-temperature figures for the condition named on each card.
- Confirm against the certified mill or resin datasheet before design release.
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Elastic (Young's) Modulus
Shear Modulus
Bulk Modulus
Poisson's Ratio
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Compressive Strength
Shear Strength
Charpy V-Notch Impact (RT)
Same in both: Fatigue Strength (Endurance Limit) 20 MPa2.9 ksi · Hardness, Brinell 21 HB · Hardness, Vickers 22 HV
Physical
Density and transition temperatures.
Density
Melting Point (Solidus)
Liquidus Temperature
Thermal
How each material carries heat and how hot it can run.
Specific Heat Capacity
Thermal Expansion (CTE, 20–100 °C)
Latent Heat of Fusion
Min Service Temperature
Same in both: Thermal Conductivity 24 W/m·K13.9 BTU/hr·ft·°F · Max Service Temperature (continuous) 120°C248 °F
Electrical
Conductivity and insulation.
Electrical Conductivity
Electrical Resistivity
Chemical & Environmental
Corrosion and environmental resistance (0–100 scores).
Same in both: Galvanic Potential (seawater, vs SCE) -0.55 V · Corrosion Resistance 40 / 100
Manufacturability
FabDigit workshop ratings (0–100 scores) — how each material behaves on the machine.
Machinability
Machinability Rating (AISI 1212 = 100 %)
Weldability
Formability (cold)
Same in both: Castability 90 / 100 · Brazeability / Solderability 85 / 100 · Polishability 60 / 100
Sustainability
Primary-production footprint per kilogram.
Embodied Energy (primary production)
Embodied Carbon (primary production)
Embodied Water
Typical Recycled Content
Common Calculations
Ratios derived from the values above.
Specific Stiffness (E / density)
Modulus of Resilience
Thermal Diffusivity
Same in both: Specific Strength (UTS / density) 6 kN·m/kg · 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.
Manufacturing and finishing
| Capability | B23 Grade 10 | B23 Grade 15 |
|---|---|---|
| Default condition | — | — |
| Relative cost | $$$ Premium | $$$ Premium |
| Min. machined wall | — | — |
| Best machined surface | — | — |
B23 Grade 10 vs B23 Grade 15 — frequently asked
Is B23 Grade 15 stronger than B23 Grade 10?
Yes. B23 Grade 15 has a typical yield strength of 45 MPa (6.53 ksi) against 26 MPa (3.77 ksi) for B23 Grade 10 — about 73% more. Tensile strength is 62 MPa (8.99 ksi) vs 60 MPa (8.7 ksi).
Which is cheaper, B23 Grade 10 or B23 Grade 15?
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, B23 Grade 10 or B23 Grade 15?
B23 Grade 10, by a small margin. Both rate excellent for machinability — 90/100 against 85/100 for B23 Grade 15; for welding the order is B23 Grade 15 first (poor, 20/100) then B23 Grade 10 (poor, 15/100).
Ready to make it?
Upload a CAD file and FabDigit prices the part in B23 Grade 10 and B23 Grade 15 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.