Solder & Low-Melting Alloy Antimonial Lead 6% Aged
Heat-treated state
Aged = cast + natural age hardening
Use when peak hardness/creep resistance is required; Sb precipitation continues at room temperature after casting.
Values for the Aged condition
Other Antimonial Lead 6% tempers and conditions
Antimonial Lead 6% is listed in 4 conditions; see the grade overview at Antimonial Lead 6%.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest condition for maximum formability in deep-drawn or hand-worked lining work; loses age-hardening benefit. | 20 | 45 | 40 | 11 HB | 6.6 % IACS |
FDefault As fabricated | Standard condition for anodes, chemical castings, valves and counterweights straight from the mould. | 25 | 50 | 24 | 13 HB | 6 % IACS |
Cold rolled sheet / plate | Standard form for hard-lead tank linings, roofing and radiation shielding sheet. | 30 | 55 | 30 | 14 HB | 6 % IACS |
AgedThis page Cast + natural age hardening | Use when peak hardness/creep resistance is required; Sb precipitation continues at room temperature after casting. | 38 | 68 | 14 | 18 HB | 6 % IACS |
What is Antimonial Lead 6% Aged?
Antimonial Lead 6% Aged is Antimonial Lead 6% heat treated to Aged — use when peak hardness/creep resistance is required; Sb precipitation continues at room temperature after casting. Antimonial Lead 6% Aged has a yield strength of 38 MPa (5.51 ksi) and a tensile strength of 68 MPa (9.86 ksi) — stronger than 85% of solder & low-melting alloy grades. Elongation at break is 14% and the elastic modulus is 17 GPa (2.47 Msi). Antimonial Lead 6% Aged has a density of 10.88 g/cm³ (0.393 lb/in³), heavier than 87% of solder & low-melting alloy grades. It melts at 252°C (486 °F). F is the default condition FabDigit quotes; Aged is available on request or by drawing note.
Advantages
- Good corrosion resistance — 62/100, better than 93% of solder & low-melting alloy grades
- Readily welded — 55/100, better than 91% of solder & low-melting alloy grades
- Low embodied carbon — 2.2 kg CO₂/kg, better than 88% of solder & low-melting alloy grades
- Easy to machine — 83/100, better than 87% of solder & low-melting alloy grades
- High strength — 38 MPa (5.51 ksi), better than 85% of solder & low-melting alloy grades
Limitations
- Heavy — 10.88 g/cm³ (0.393 lb/in³), worse than 87% of solder & low-melting alloy grades
- Limited formability — 35/100, worse than 85% of solder & low-melting alloy grades
- Low electrical conductivity — 6 % IACS, worse than 84% of solder & low-melting alloy grades
- Low stiffness — 17 GPa (2.47 Msi), worse than 83% of solder & low-melting alloy grades
- Limited ductility — 14%, worse than 82% of solder & low-melting alloy grades
Antimonial Lead 6% Aged properties
Typical room-temperature values for Antimonial Lead 6% Aged; 19 are specific to this condition. Other listed values are Antimonial Lead 6% reference data and may not represent this condition. Bars are the position among solder & low-melting alloy grades.
Physical3
Antimonial Lead 6% Aged has a density of 10.88 g/cm³ (0.393 lb/in³), heavier than 87% of solder & low-melting alloy grades. It melts at 252°C (486 °F).
Mechanical12
Antimonial Lead 6% Aged has a yield strength of 38 MPa (5.51 ksi) and a tensile strength of 68 MPa (9.86 ksi) — stronger than 85% of solder & low-melting alloy grades. Elongation at break is 14% and the elastic modulus is 17 GPa (2.47 Msi).
Thermal6
Antimonial Lead 6% Aged is rated for continuous service to 95°C (203 °F). It conducts heat at 25 W/m·K (14.4 BTU/hr·ft·°F), worse than 82% of solder & low-melting alloy grades. Thermal expansion is 27 µm/m·K (15 µin/in·°F).
Electrical3
Antimonial Lead 6% Aged conducts electricity at 6 % IACS, worse than 84% of solder & low-melting alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), better than 93% of solder & low-melting alloy grades.
Sustainability4
Producing a kilogram of Antimonial Lead 6% Aged takes about 27 MJ of energy and emits 2.2 kg of CO₂ — less than 91% of solder & low-melting alloy grades. Typical recycled content is 65%.
Manufacturability8
Antimonial Lead 6% Aged's machinability is very good (83/100, better than 87% of solder & low-melting alloy grades); weldability good (55/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Antimonial Lead 6% Aged
Is Antimonial Lead 6% easy to machine?
Cuts with very low forces using sharp, high-rake tools and no coolant mist; material is gummy and smears, so use generous chip clearance, slow feeds for finish, and full lead-dust/swarf hygiene controls.
Can Antimonial Lead 6% be welded?
Joined by lead burning (oxy-hydrogen or oxy-acetylene) with matching Pb-6Sb filler rod; no flux needed after scraping to bright metal, keep heat input low to avoid melt-through of the low-melting eutectic.
Can Antimonial Lead 6% be formed, bent or molded?
Excellent gravity/chill castability at 380–450 °C pouring; rolls and extrudes readily but work-hardens little — bend radii can be tight, though creep under sustained load must be designed out.
What surface finishes work on Antimonial Lead 6%?
Not anodizable; surfaces are wire-brushed and left bare, lead-burned smooth, or coated with bitumen/epoxy where contact with concrete, soft water or foodstuffs must be avoided.
Antimonial Lead 6% chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Sbprimary hardening addition; eutectic Pb-Sb structure | 5.5 – 6.5 | 6 |
| Asoptional, accelerates age hardening | ≤ 0.25 | 0.1 |
| Snresidual/optional for castability | ≤ 0.2 | — |
| Cu | ≤ 0.08 | — |
| Bi | ≤ 0.1 | — |
| Ag | ≤ 0.02 | — |
| Fe | ≤ 0 | — |
| Zn | ≤ 0 | — |
| Pbbalance, ≈93.5–94.5 % | balance | — |
Antimonial Lead 6% Aged — frequently asked
What is Antimonial Lead 6% Aged used for?
Antimonial Lead 6% Aged is typically used for battery grids and terminals, cable sheathing under mechanical stress, storage tank linings, ammunition and weights and pipe and valve components. In short: hardened structural lead; battery-grid standard alloy; stronger than pure lead.
What is the yield strength of Antimonial Lead 6% Aged?
Antimonial Lead 6% Aged has a typical yield strength of 38 MPa (5.51 ksi) and a tensile strength of 68 MPa (9.86 ksi) — stronger than 85% of solder & low-melting alloy grades. Strength varies by condition: see the 4 listed tempers.
Is Antimonial Lead 6% Aged easy to machine?
Yes — machinability is rated very good (83/100, better than 87% of solder & low-melting alloy grades). Cuts with very low forces using sharp, high-rake tools and no coolant mist; material is gummy and smears, so use generous chip clearance, slow feeds for finish, and full lead-dust/swarf hygiene controls.
Can Antimonial Lead 6% Aged be welded?
Yes — weldability is rated good (55/100). Joined by lead burning (oxy-hydrogen or oxy-acetylene) with matching Pb-6Sb filler rod; no flux needed after scraping to bright metal, keep heat input low to avoid melt-through of the low-melting eutectic.
What surface finishes work on Antimonial Lead 6% Aged?
Not anodizable; surfaces are wire-brushed and left bare, lead-burned smooth, or coated with bitumen/epoxy where contact with concrete, soft water or foodstuffs must be avoided.
Can Antimonial Lead 6% Aged be formed, bent or molded?
Excellent gravity/chill castability at 380–450 °C pouring; rolls and extrudes readily but work-hardens little — bend radii can be tight, though creep under sustained load must be designed out.
What is the maximum service temperature of Antimonial Lead 6% Aged?
Antimonial Lead 6% Aged is rated for continuous use to about 95°C (203 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Antimonial Lead 6%-F and Antimonial Lead 6% Aged?
F is the default condition — standard condition for anodes, chemical castings, valves and counterweights straight from the mould. Aged: use when peak hardness/creep resistance is required; Sb precipitation continues at room temperature after casting. Yield strength is 25 MPa in F versus 38 MPa in Aged.
Sources
- ASTM B29 — Refined Lead — ASTM International (2020)
- ASTM B749 — Lead and Lead Alloy Strip, Sheet, and Plate Products (UNS L52901) — ASTM International (2018)
- ASM Handbook Vol.2: Properties and Selection — Nonferrous Alloys (Lead and Lead Alloys) — ASM International (1990)
- ASM Handbook Vol.13B: Corrosion — Materials (Lead) — ASM International (2005)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.