Solder & Low-Melting Alloy Antimonial Lead 6%-F vs Antimonial Lead 6%-O
Solder & Low-Melting Alloy · Antimonial Lead 6% temper comparison
Antimonial Lead 6%-F and Antimonial Lead 6%-O are two conditions of the same solder & low-melting alloy grade, Antimonial Lead 6%: F (as fabricated) versus O (annealed). The chemistry is identical, so every difference below comes from the condition. Antimonial Lead 6%-F is the stronger of the two: yield strength 25 MPa (3.63 ksi) against 20 MPa (2.9 ksi) for Antimonial Lead 6%-O, about 25% more; tensile strength follows at 50 MPa (7.25 ksi) vs 45 MPa (6.53 ksi). In exchange, Antimonial Lead 6%-O is the more ductile: elongation 40% versus 24% for Antimonial Lead 6%-F, and Antimonial Lead 6%-F is harder (13 HB vs 11 HB).
Antimonial Lead 6%-FChoose it when strength drives the design.
Antimonial Lead 6%-OChoose it when the part is bent, formed or impact-loaded.
Antimonial Lead 6%-F vs Antimonial Lead 6%-O: 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.
Antimonial Lead 6%-FAntimonial Lead 6%-O
Mechanical
Strength, stiffness, ductility and hardness at room temperature.
Tensile Strength (Ultimate)
Yield Strength (0.2% offset)
Elongation at Break
Reduction in Area
Shear Strength
Fatigue Strength (Endurance Limit)
Hardness, Brinell
Hardness, Vickers
Same in both: Elastic (Young's) Modulus 17 GPa2.5 Msi · Shear Modulus 6.2 GPa0.9 Msi · Bulk Modulus 44 GPa6.4 Msi · Poisson's Ratio 0.43
Physical
Density and transition temperatures.
Same in both: Density 10.88 g/cm³0.39 lb/in³ · Melting Point (Solidus) 252°C486 °F · Liquidus Temperature 281°C538 °F
Thermal
How each material carries heat and how hot it can run.
Thermal Conductivity
Max Service Temperature (continuous)
Same in both: Specific Heat Capacity 130 J/kg·K0.03 BTU/lb·°F · Thermal Expansion (CTE, 20–100 °C) 27 µm/m·K15 µin/in·°F · Latent Heat of Fusion 24 J/g10.3 BTU/lb · Min Service Temperature -60°C-76 °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 62 / 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 88 / 100 · Brazeability / Solderability 78 / 100 · Polishability 25 / 100
Sustainability
Primary-production footprint per kilogram.
Same in both: Embodied Energy (primary production) 27 MJ/kg11,608 BTU/lb · Embodied Carbon (primary production) 2.2 kg CO₂/kg · Embodied Water 130 L/kg15.6 gal/lb · Typical Recycled Content 65%
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.
Antimonial Lead 6%-F vs Antimonial Lead 6%-O — frequently asked
Is Antimonial Lead 6%-F stronger than Antimonial Lead 6%-O?
Yes. Antimonial Lead 6%-F has a typical yield strength of 25 MPa (3.63 ksi) against 20 MPa (2.9 ksi) for Antimonial Lead 6%-O — about 25% more. Tensile strength is 50 MPa (7.25 ksi) vs 45 MPa (6.53 ksi).
Which condition does FabDigit quote by default, F or O?
F is the default Antimonial Lead 6% condition in the FabDigit quote flow. The other condition is available on request or by drawing note — specify it in the material field or the part notes and the quote is priced for it.
Which is easier to machine, Antimonial Lead 6%-F or Antimonial Lead 6%-O?
Antimonial Lead 6%-F, by a small margin. Both rate very good for machinability — 80/100 against 75/100 for Antimonial Lead 6%-O.
Ready to make it?
Upload a CAD file and FabDigit prices the part in Antimonial Lead 6%-F and Antimonial Lead 6%-O 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.