Solder & Low-Melting Alloy B23 Grade 10 AS-CAST
Heat-treated state · default condition
ASTM B23 Grade 10 · UNS L53710
Default reference condition: alloy poured against a chilled mould or metal shell, as used for ASTM B23 property testing and for most bearing linings.
Values for the AS-CAST condition
Other B23 Grade 10 tempers and conditions
B23 Grade 10 is listed in 2 conditions; see the grade overview at B23 Grade 10.
- AS-CAST
- CENTRIFUGAL-LINED
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AS-CASTDefaultThis page As-cast (chill-cast test specimen / poured lining) | Default reference condition: alloy poured against a chilled mould or metal shell, as used for ASTM B23 property testing and for most bearing linings. | 26 | 60 | 3 | 21 HB | 5.7 % IACS |
Centrifugally cast lining on steel/bronze shell | Choose for dense, porosity-free thin linings (0.5–3 mm) in higher-speed journal bearings; finest structure and best fatigue life of the cast forms. | 28 | 64 | 3 | 22 HB | 5.7 % IACS |
What is B23 Grade 10 AS-CAST?
B23 Grade 10 AS-CAST is B23 Grade 10 heat treated to AS-CAST — default reference condition: alloy poured against a chilled mould or metal shell, as used for ASTM B23 property testing and for most bearing linings. B23 Grade 10 AS-CAST has a yield strength of 26 MPa (3.77 ksi) and a tensile strength of 60 MPa (8.7 ksi) — weaker than 55% of solder & low-melting alloy grades. Elongation at break is 3% and the elastic modulus is 28 GPa (4.06 Msi). B23 Grade 10 AS-CAST has a density of 10 g/cm³ (0.361 lb/in³), heavier than 76% of solder & low-melting alloy grades. It melts at 240°C (464 °F).
Advantages
- Low embodied carbon — 1.8 kg CO₂/kg, better than 98% of solder & low-melting alloy grades
- Easy to machine — 90/100, better than 95% of solder & low-melting alloy grades
- Polishes to a fine finish — 60/100, better than 82% of solder & low-melting alloy grades
Limitations
- Limited ductility — 3%, worse than 95% of solder & low-melting alloy grades
- Limited formability — 20/100, worse than 95% of solder & low-melting alloy grades
- Low electrical conductivity — 5.7 % IACS, worse than 87% of solder & low-melting alloy grades
- Poor heat conductor — 24 W/m·K (13.9 BTU/hr·ft·°F), worse than 86% of solder & low-melting alloy grades
- Heavy — 10 g/cm³ (0.361 lb/in³), worse than 76% of solder & low-melting alloy grades
B23 Grade 10 AS-CAST properties
Typical room-temperature values for B23 Grade 10 AS-CAST; 19 are specific to this condition. Other listed values are B23 Grade 10 reference data and may not represent this condition. Bars are the position among solder & low-melting alloy grades.
Physical3
B23 Grade 10 AS-CAST has a density of 10 g/cm³ (0.361 lb/in³), heavier than 76% of solder & low-melting alloy grades. It melts at 240°C (464 °F).
Mechanical13
B23 Grade 10 AS-CAST has a yield strength of 26 MPa (3.77 ksi) and a tensile strength of 60 MPa (8.7 ksi) — weaker than 55% of solder & low-melting alloy grades. Elongation at break is 3% and the elastic modulus is 28 GPa (4.06 Msi).
Thermal6
B23 Grade 10 AS-CAST is rated for continuous service to 120°C (248 °F). It conducts heat at 24 W/m·K (13.9 BTU/hr·ft·°F), worse than 86% of solder & low-melting alloy grades. Thermal expansion is 24 µm/m·K (13.3 µin/in·°F).
Electrical3
B23 Grade 10 AS-CAST conducts electricity at 5.7 % IACS, worse than 87% of solder & low-melting alloy grades.
Chemical & Environmental3
Corrosion resistance is fair (40/100), worse than 82% of solder & low-melting alloy grades.
Sustainability4
Producing a kilogram of B23 Grade 10 AS-CAST takes about 21 MJ of energy and emits 1.8 kg of CO₂ — less than 100% of solder & low-melting alloy grades. Typical recycled content is 65%.
Manufacturability7
B23 Grade 10 AS-CAST's machinability is excellent (90/100, better than 95% of solder & low-melting alloy grades); weldability poor (15/100); formability poor (20/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with B23 Grade 10 AS-CAST
Is B23 Grade 10 easy to machine?
Very easy to bore/broach with sharp positive-rake tools, flood coolant and light feeds; avoid smearing and always capture lead swarf for controlled disposal.
Can B23 Grade 10 be welded?
Not fusion-welded — repair by tinning and re-pouring the lining; keep melt below ~480 °C and skim dross to avoid antimony loss and oxide inclusions.
Can B23 Grade 10 be formed, bent or molded?
Cast only: pour at about 440–470 °C onto a properly cleaned, fluxed and tinned steel or bronze shell, with directional chilling to prevent shrink voids and Sb segregation.
What surface finishes work on B23 Grade 10?
Finish by boring/scraping to oil-clearance; no anodizing or plating is used, and painted or plated overlays are unnecessary since the lining itself is the wear surface.
B23 Grade 10 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 |
|---|---|---|
| Snlow-tin lead-base babbitt | 4.5 – 5.5 | 5 |
| Sbforms hard SbSn/Sb phase for load carrying | 14 – 16 | 15 |
| Asgrain refiner / hot-strength additive | 0.3 – 0.6 | 0.45 |
| Cuimpurity limit | ≤ 0.5 | 0.1 |
| Feimpurity limit | ≤ 0.1 | — |
| Biimpurity limit | ≤ 0.1 | — |
| Znimpurity limit | ≤ 0.01 | — |
| Alimpurity limit | ≤ 0.01 | — |
| Pbbalance ≈ 79–80 %; verify exact grade-number limits against the current ASTM B23 edition, as lead-base grade numbering changed between editions | balance | — |
B23 Grade 10 AS-CAST — frequently asked
What is B23 Grade 10 AS-CAST used for?
B23 Grade 10 AS-CAST is typically used for sleeve bearings, machine tool bearings and low-speed bushings. In short: low-cost lead-base babbitt; free-machining bearing lining; cheaper than tin babbitt.
What is the yield strength of B23 Grade 10 AS-CAST?
B23 Grade 10 AS-CAST has a typical yield strength of 26 MPa (3.77 ksi) and a tensile strength of 60 MPa (8.7 ksi) — weaker than 55% of solder & low-melting alloy grades. Strength varies by condition: see the 2 listed tempers.
Is B23 Grade 10 AS-CAST easy to machine?
Yes — machinability is rated excellent (90/100, better than 95% of solder & low-melting alloy grades). Very easy to bore/broach with sharp positive-rake tools, flood coolant and light feeds; avoid smearing and always capture lead swarf for controlled disposal.
Can B23 Grade 10 AS-CAST be welded?
Not readily — weldability is rated poor (15/100). Not fusion-welded — repair by tinning and re-pouring the lining; keep melt below ~480 °C and skim dross to avoid antimony loss and oxide inclusions.
What surface finishes work on B23 Grade 10 AS-CAST?
Finish by boring/scraping to oil-clearance; no anodizing or plating is used, and painted or plated overlays are unnecessary since the lining itself is the wear surface.
Can B23 Grade 10 AS-CAST be formed, bent or molded?
Cast only: pour at about 440–470 °C onto a properly cleaned, fluxed and tinned steel or bronze shell, with directional chilling to prevent shrink voids and Sb segregation.
What is the maximum service temperature of B23 Grade 10 AS-CAST?
B23 Grade 10 AS-CAST 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.
Sources
- ASTM B23 Standard Specification for White Metal Bearing Alloys (Known Commercially as Babbitt Metal) — ASTM International (2019)
- ASM Handbook Vol. 2: Properties and Selection — Nonferrous Alloys and Special-Purpose Materials (bearing alloys) — ASM International (1990)
- ASM Handbook Vol. 18: Friction, Lubrication, and Wear Technology (plain bearing materials) — ASM International (2017)
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.