Solder & Low-Melting Alloy B23 Grade 10
ASTM B23 Grade 10 · UNS L53710
ASTM B23 Grade 10 (L53710) is a lead-base babbitt with about 5% tin and antimony, one of the low-tin bearing alloys in the ASTM B23 family.
Reference datasheet — B23 Grade 10 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the AS-CAST condition
B23 Grade 10 tempers and conditions
B23 Grade 10 is supplied in 2 conditions, soft to hard. AS-CAST is the default FabDigit quotes; the values on this page are for it.
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AS-CASTDefault 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 |
Supply forms, finishes and certifications
Ways B23 Grade 10 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
Ingot | Remelt ingot | Supply form |
STATIC-LINED | Static (gravity) cast lining on tinned shell | Surface finish |
What is B23 Grade 10?
ASTM B23 Grade 10 (L53710) is a lead-base babbitt with about 5% tin and antimony, one of the low-tin bearing alloys in the ASTM B23 family. It is chosen for general-purpose plain bearings where load and cost pressures favour lead-base over tin-base babbitt, and is supplied as ingot for pouring or as statically and centrifugally lined shells. Typical values are 60 MPa tensile, 3% elongation, 21 HB and service to 120 °C, with a machinability score of 90. It is not fusion weldable, is attacked by acidic oils and has little ductility for shock loads; tin-base B23 grades are the step up. B23 Grade 10 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). B23 Grade 10 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).
What is B23 Grade 10 used for?
- Sleeve bearings
- Machine tool bearings
- Low-speed bushings
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 properties
Typical room-temperature values for B23 Grade 10-AS-CAST; bars are the position among solder & low-melting alloy grades.
Physical3
B23 Grade 10 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 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 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 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 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'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. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the solder & low-melting alloy family
Yield strength against density for every solder & low-melting alloy grade FabDigit runs. B23 Grade 10 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with B23 Grade 10
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.
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 | — |
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.
Equivalent designations
Standards and trade names that resolve to Solder & Low-Melting Alloy B23 Grade 10 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- L53710
How much does B23 Grade 10 cost?
B23 Grade 10 is a premium-cost solder & low-melting alloy ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
B23 Grade 10 — frequently asked
What is B23 Grade 10 used for?
B23 Grade 10 is typically used for sleeve bearings, machine tool bearings and low-speed bushings. In short: low-cost lead-base babbitt; free-machining bearing lining; cheaper than tin babbitt.
What is the yield strength of B23 Grade 10?
B23 Grade 10 has a typical yield strength of 26 MPa (3.77 ksi) and a tensile strength of 60 MPa (8.7 ksi) — weaker than 55% of solder & low-melting alloy grades. Strength varies by condition: see the 2 listed tempers.
Is B23 Grade 10 easy to machine?
Yes — machinability is rated excellent (90/100, better than 95% of solder & low-melting alloy grades). Very easy to bore/broach with sharp positive-rake tools, flood coolant and light feeds; avoid smearing and always capture lead swarf for controlled disposal.
Can B23 Grade 10 be welded?
Not readily — weldability is rated poor (15/100). Not fusion-welded — repair by tinning and re-pouring the lining; keep melt below ~480 °C and skim dross to avoid antimony loss and oxide inclusions.
What surface finishes work on B23 Grade 10?
Finish by boring/scraping to oil-clearance; no anodizing or plating is used, and painted or plated overlays are unnecessary since the lining itself is the wear surface.
Can B23 Grade 10 be formed, bent or molded?
Cast only: pour at about 440–470 °C onto a properly cleaned, fluxed and tinned steel or bronze shell, with directional chilling to prevent shrink voids and Sb segregation.
What is the maximum service temperature of B23 Grade 10?
B23 Grade 10 is rated for continuous use to about 120°C (248 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does B23 Grade 10 cost?
B23 Grade 10 is a premium-cost solder & low-melting alloy ($$$), cheaper than about 51% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
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; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.