Solder & Low-Melting Alloy ZSnSb11-6-F (As fabricated)
Temper · default condition
Default reference condition: chill-cast structure used for datasheet properties and for solid bushings or cast test coupons.
Values for the F condition
Other ZSnSb11-6 tempers and conditions
ZSnSb11-6 is listed in 3 conditions; see the grade overview at ZSnSb11-6.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Sand-cast bushing / solid part | Used for one-off solid bushings and thrust pads where a steel backing is not required; slowest cooling and coarsest SbSn phase. | 50 | 80 | 5 | 27 HB | 8.5 % IACS |
FDefaultThis page As fabricated | Default reference condition: chill-cast structure used for datasheet properties and for solid bushings or cast test coupons. | 55 | 90 | 6 | 30 HB | 8.5 % IACS |
Centrifugally cast lining on steel/bronze backing | Preferred production route for turbine and large machine bearings: fine, dense, gas-free structure with strongest bond to the shell. | 60 | 95 | 8 | 32 HB | 8.5 % IACS |
What is ZSnSb11-6-F?
ZSnSb11-6-F is ZSnSb11-6 in the F temper — default reference condition: chill-cast structure used for datasheet properties and for solid bushings or cast test coupons. ZSnSb11-6-F has a yield strength of 55 MPa (7.98 ksi) and a tensile strength of 90 MPa (13.1 ksi) — stronger than 99% of solder & low-melting alloy grades. Elongation at break is 6% and the elastic modulus is 52 GPa (7.54 Msi). ZSnSb11-6-F has a density of 7.35 g/cm³ (0.266 lb/in³), lighter than 84% of solder & low-melting alloy grades. It melts at 240°C (464 °F).
Advantages
- High strength — 55 MPa (7.98 ksi), better than 99% of solder & low-melting alloy grades
- Easy to machine — 92/100, better than 99% of solder & low-melting alloy grades
- Stiff — 52 GPa (7.54 Msi), better than 95% of solder & low-melting alloy grades
- Polishes to a fine finish — 70/100, better than 91% of solder & low-melting alloy grades
- Lightweight — 7.35 g/cm³ (0.266 lb/in³), better than 84% of solder & low-melting alloy grades
Limitations
- Limited formability — 25/100, worse than 91% of solder & low-melting alloy grades
- Limited ductility — 6%, worse than 88% of solder & low-melting alloy grades
- High embodied carbon — 19 kg CO₂/kg, worse than 83% of solder & low-melting alloy grades
ZSnSb11-6-F properties
Typical room-temperature values for ZSnSb11-6-F; 20 are specific to this condition. Other listed values are ZSnSb11-6 reference data and may not represent this condition. Bars are the position among solder & low-melting alloy grades.
Physical3
ZSnSb11-6-F has a density of 7.35 g/cm³ (0.266 lb/in³), lighter than 84% of solder & low-melting alloy grades. It melts at 240°C (464 °F).
Mechanical14
ZSnSb11-6-F has a yield strength of 55 MPa (7.98 ksi) and a tensile strength of 90 MPa (13.1 ksi) — stronger than 99% of solder & low-melting alloy grades. Elongation at break is 6% and the elastic modulus is 52 GPa (7.54 Msi).
Thermal6
ZSnSb11-6-F is rated for continuous service to 120°C (248 °F). It conducts heat at 34 W/m·K (19.6 BTU/hr·ft·°F), worse than 72% of solder & low-melting alloy grades. Thermal expansion is 23 µm/m·K (12.8 µin/in·°F).
Electrical3
ZSnSb11-6-F conducts electricity at 8.5 % IACS, worse than 64% of solder & low-melting alloy grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), better than 78% of solder & low-melting alloy grades.
Sustainability4
Producing a kilogram of ZSnSb11-6-F takes about 320 MJ of energy and emits 19 kg of CO₂ — more than 81% of solder & low-melting alloy grades. Typical recycled content is 30%.
Manufacturability8
ZSnSb11-6-F's machinability is excellent (92/100, better than 99% of solder & low-melting alloy grades); weldability poor (20/100); formability poor (25/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with ZSnSb11-6-F
Is ZSnSb11-6 easy to machine?
Extremely free-cutting: use sharp high-rake HSS or carbide tools, high speed, light feed, generous kerosene/oil cooling to avoid smearing; bore and hand-scrape linings to final clearance.
Can ZSnSb11-6 be welded?
Not arc weldable — defects are repaired by torch or induction remelting/puddling of the same alloy; avoid overheating above ~450 °C to limit Sb loss and oxidation.
Can ZSnSb11-6 be formed, bent or molded?
Cast, not formed: tin the pre-cleaned steel shell with Sn-Sb flux at 250–280 °C, pour at 420–460 °C and cool quickly (chill or centrifugal) to keep SbSn crystals fine and the bond sound.
What surface finishes work on ZSnSb11-6?
No anodizing or plating; finish by fine boring/scraping and light burnishing, then flush with clean lube oil — do not paint or shot-blast the bearing surface.
ZSnSb11-6 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 |
|---|---|---|
| Sbforms hard cubic SbSn phase | 10 – 12 | 11 |
| Cuforms Cu6Sn5 needles, prevents SbSn segregation | 5.5 – 6.5 | 6 |
| Pbimpurity limit | ≤ 0.35 | — |
| Asimpurity limit | ≤ 0.1 | — |
| Feimpurity limit | ≤ 0.1 | — |
| Biimpurity limit | ≤ 0.08 | — |
| Alimpurity limit | ≤ 0.01 | — |
| Znimpurity limit | ≤ 0.01 | — |
| Snbalance, approx. 81.5–84.5 %; total impurities ≤ 0.55 % | balance | — |
ZSnSb11-6-F — frequently asked
What is ZSnSb11-6-F used for?
ZSnSb11-6-F is typically used for turbine bearings, large motor bearings and marine engine bearings. In short: highest-load tin Babbitt; best machinability in family; turbine-grade bearing lining.
What is the yield strength of ZSnSb11-6-F?
ZSnSb11-6-F has a typical yield strength of 55 MPa (7.98 ksi) and a tensile strength of 90 MPa (13.1 ksi) — stronger than 99% of solder & low-melting alloy grades. Strength varies by condition: see the 3 listed tempers.
Is ZSnSb11-6-F easy to machine?
Yes — machinability is rated excellent (92/100, better than 99% of solder & low-melting alloy grades). Extremely free-cutting: use sharp high-rake HSS or carbide tools, high speed, light feed, generous kerosene/oil cooling to avoid smearing; bore and hand-scrape linings to final clearance.
Can ZSnSb11-6-F be welded?
Not readily — weldability is rated poor (20/100). Not arc weldable — defects are repaired by torch or induction remelting/puddling of the same alloy; avoid overheating above ~450 °C to limit Sb loss and oxidation.
What surface finishes work on ZSnSb11-6-F?
No anodizing or plating; finish by fine boring/scraping and light burnishing, then flush with clean lube oil — do not paint or shot-blast the bearing surface.
Can ZSnSb11-6-F be formed, bent or molded?
Cast, not formed: tin the pre-cleaned steel shell with Sn-Sb flux at 250–280 °C, pour at 420–460 °C and cool quickly (chill or centrifugal) to keep SbSn crystals fine and the bond sound.
What is the maximum service temperature of ZSnSb11-6-F?
ZSnSb11-6-F is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between ZSnSb11-6-F and ZSnSb11-6 SAND?
F is the default condition — default reference condition: chill-cast structure used for datasheet properties and for solid bushings or cast test coupons. SAND: used for one-off solid bushings and thrust pads where a steel backing is not required; slowest cooling and coarsest SbSn phase. Yield strength is 55 MPa in F versus 50 MPa in SAND.
Sources
- GB/T 1174 (Cast bearing alloys) — SAC / (1992)
- ASTM B23 Standard Specification for White Metal Bearing Alloys — ASTM International (2019)
- ASM Handbook, Vol. 2 — Properties and Selection: Nonferrous Alloys (Tin and Tin Alloys / Bearing Alloys) — ASM International (1990)
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.