C93200 Bearing Bronze (SAE 660)
Primary Designation:UNS C93200
Aliases:
SAE 660High-Leaded Tin BronzeContinuous Cast Bearing BronzeC93200
Mat Grades internal verification confirms source-backed fidelity and data integrity. It does not constitute external certification, ASTM/CDA endorsement, or guaranteed material conformity for procurement.
Data Completeness & Record Integrity:11 composition elements and 20 contextual property values cataloged.
Omitted fields represent unverified parameters. "Missing is better than invented."
Key Engineering Properties
Representative source rows, qualified by their reported conditions. Inspect the tables below for all values, limits, and source notes.
Density
8.913 g/cm³TYPICAL · at 20 °C
Electrical Conductivity
12 % IACSTYPICAL · at 20 °C
Thermal Conductivity
58.15 W/(m·K)TYPICAL · at 20 °C
Specific Heat Capacity
376.8 J/(kg·K)TYPICAL · at 20 °C
Melting Range (Solidus / Liquidus)
854.4 – 976.7 °C1570.0 – 1790.0 °F
Solidus: 854.4°C | Liquidus: 976.7°CComposition Excerpt
Cu 81–85 wt%Copper (range)
Standard Elemental Basis: RANGEEngineering Summary
UNS C93200 (SAE 660) High-Leaded Tin Bronze (83Cu-7Sn-7Pb-3Zn) is the universal engineering standard for general-purpose sleeve bearings and wear plates operating under moderate loads and speeds with boundary lubrication. The free lead phase imparts exceptional anti-friction, seizure resistance, and embeddability of abrasive grit.
Documented Product Applications (Cited CDA Reference Profile)
- ›Automotive Fittings: Corrosion Resistance
- ›Automotive Fittings: Machining Properties
- ›Automotive Fittings: Mechanical Properties
- ›Automotive: Automotive Fittings
- ›Bearings for Cranes: Corrosion Resistance
- ›Bearings for Cranes: Friction & Wear Properties
- ›Bearings for Cranes: Machining Properties
- ›Bearings for Cranes: Mechanical Properties
- ›Bearings: Corrosion Resistance
- ›Bearings: Friction & Wear Properties
- ›Bearings: Machining Properties
- ›Bearings: Mechanical Properties
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
SAE 660High-Leaded Tin BronzeContinuous Cast Bearing BronzeC93200
Standard Designations & Applicable Specifications
Semantically classified designations distinguishing primary standard identifiers, commercial trade names, and applicable specification references.
Direct Standard DesignationsDIRECT DESIGNATION
2 Primary Identifiers| System | Identifier | Standard System Name | Classification Notes & Provenance |
|---|---|---|---|
| UNSPRIMARY | C93200 | Unified Numbering System | Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C93200) |
| CDA | Alloy 932 | Copper Development Association Alloy Number | CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C93200) |
Recognized Commercial Aliases & Trade NamesCOMMON ALIAS
5 Listed| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| SAE 660 Bearing Bronze | Standard Commercial Name | CDA Standard Commercial Name |
| SAE 660 | Commercial Alias | Colloquial or commercial industry synonym |
| High-Leaded Tin Bronze | Commercial Alias | Colloquial or commercial industry synonym |
| Continuous Cast Bearing Bronze | Commercial Alias | Colloquial or commercial industry synonym |
| C93200 | Commercial Alias | Colloquial or commercial industry synonym |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
8 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| SAE | SAE J461 | WROUGHT AND CAST COPPER ALLOYS | Specification Reference |
| SAE | SAE J462 | CAST COPPER ALLOYS | Specification Reference |
| ASTM | ASTM B271/B271M | COPPER BASE ALLOY CENTRIFUGAL CASTINGS | Specification Reference |
| ASTM | ASTM B505/B505M | COPPER BASE ALLOY CONTINUOUS CASTINGS | Specification Reference |
| ASTM | ASTM B763/B763M | COPPER ALLOY SAND CASTINGS FOR VALVE APPLICATIONS | Specification Reference |
| ASTM | ASTM B584 | COPPER ALLOY SAND CASTINGS FOR GENERAL APPLICATIONS | Specification Reference |
| ASTM | ASTM B66 | BRONZE CASTINGS IN THE ROUGH FOR LOCOMOTIVE WEARING PARTS | Specification Reference |
| ASTM | ASTM B30 | COPPER BASE ALLOYS IN INGOT FORM | Specification Reference |
Engineering Notice: Applicable specifications establish manufacturing requirements, dimensional tolerances, and test criteria for specific product forms (e.g. bus bar, wire, plate, pipe). They represent applicable technical standards, not alternative or equivalent alloy grades.
Chemical Composition (Weight %)
Elemental limits and values from the cited source. Preserves exact semantic limits (minimums, maximums, and ranges).
| Element | Symbol | Atomic No. | Semantic Basis | Specified Value | Unit | Metallurgical Notes & Qualification | Data Status |
|---|---|---|---|---|---|---|---|
| Copper | Cu | 29 | RANGE | 81.00 – 85.00 | wt% | CDA chemical composition specification limits for C93200: 81.0 - 85.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Lead | Pb | 82 | RANGE | 6.00 – 8.00 | wt% | CDA chemical composition specification limits for C93200: 6.0 - 8.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Tin | Sn | 50 | RANGE | 6.30 – 7.50 | wt% | CDA chemical composition specification limits for C93200: 6.3 - 7.5 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Zinc | Zn | 30 | RANGE | 1.00 – 4.00 | wt% | CDA chemical composition specification limits for C93200: 1.0 - 4.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Iron | Fe | 26 | MAXIMUM | ≤ 0.20 | wt% | CDA chemical composition specification limits for C93200: max 0.2 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Phosphorus | P | 15 | MAXIMUM | ≤ 0.15 | wt% | CDA chemical composition specification limits for C93200: max 0.15 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Nickel | Ni | 28 | MAXIMUM | ≤ 1.00 | wt% | CDA chemical composition specification limits for C93200: max 1.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Aluminum | Al | 13 | MAXIMUM | ≤ 0.01 | wt% | CDA chemical composition specification limits for C93200: max 0.005 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Sulfur | S | 16 | MAXIMUM | ≤ 0.08 | wt% | CDA chemical composition specification limits for C93200: max 0.08 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Antimony | Sb | 51 | MAXIMUM | ≤ 0.35 | wt% | CDA chemical composition specification limits for C93200: max 0.35 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Silicon | Si | 14 | MAXIMUM | ≤ 0.01 | wt% | CDA chemical composition specification limits for C93200: max 0.005 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
* Elemental percentages are expressed in weight percent (wt%). Values represent applicable specification limits. Unspecified trace elements are not fabricated or assumed.Preserves exact semantic basis
Property Display UnitsSwitch between Canonical SI and Source / US Customary units:
Physical Properties
Source-specific physical properties. Test temperatures are shown only where reported.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Density | 8.913 g/cm³ | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Density 0.322 lb/cu in. at 68°F (8.913 g/cm³ at 20°C) | 0.322 lb/cu in. at 68°F | Copper Development Association Inc. | VERIFIED |
Thermal & Thermodynamic Properties
Phase change temperatures, thermal conductivity, specific heat, mean coefficients of thermal expansion across standardized temperature ranges, and recommended thermal processing windows.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Liquidus Temperature | 976.7 °C | TYPICAL | CDA Physical Properties: Liquidus temperature 1790.0 °F (976.7 °C) | 1790.0 °F | Copper Development Association Inc. | VERIFIED |
| Solidus Temperature | 854.4 °C | TYPICAL | CDA Physical Properties: Solidus temperature 1570.0 °F (854.4 °C) | 1570.0 °F | Copper Development Association Inc. | VERIFIED |
| Thermal Conductivity | 58.15 W/(m·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 33.6 Btu/(ft·hr·°F) (58.15 W/(m·K) at 20°C) | 33.6 Btu/ sq ft/ ft hr/ °F at 68°F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 18 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 10.0 µin/(in·°F) (18.0 µm/(m·K)) over range 68-21210°F | 10.0 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Specific Heat Capacity | 376.8 J/(kg·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Specific heat 0.09 Btu/(lb·°F) (376.8 J/(kg·K)) | 0.09 Btu/ lb /°F at 68°F | Copper Development Association Inc. | VERIFIED |
Electrical Properties
Electrical conductivity and resistivity in their reported units and conditions.
| Property Parameter | Canonical SI Value | Semantic Basis | Test Temperature / Context Range | Source Raw Reference | Source Reference | Status |
|---|---|---|---|---|---|---|
| Electrical Conductivity | 12 % IACS | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Volume conductivity 12.0 % IACS at 68°F (20°C) | 12.0 % IACS at 68°F | Copper Development Association Inc. | VERIFIED |
Contextual Mechanical Properties & Tempers
Engineering strength, ductility, and hardness values grouped by product form, temper, and section thickness. Mechanical properties are contextual and not isotropic averages.
Elastic & Baseline Mechanical ConstantsSource-specific measurement conditions
Modulus of Elasticity (Tension)
100 GPa
CDA Physical Properties: Elastic modulus in tension 14500.0 ksi (100.0 GPa)Machinability Rating
70 %
CDA Fabrication Properties: Rating relative to Free-Cutting Brass (C36000 = 100%).Showing 4 of 4 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| As Centrifugal Cast | As Centrifugal Cast (M02) · 20 °CSource values and qualifiersTensile Strength: 206.8 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 96.5 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Copper Development Association (CDA) — | — | 206.8 MPa | 96.5 MPa | 15 % | — | — | — | VERIFIED |
| As Continuous Cast | As Continuous Cast (M07) · 20 °CSource values and qualifiersTensile Strength: 241.3 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 137.9 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Copper Development Association (CDA) — | — | 241.3 MPa | 137.9 MPa | 10 % | — | — | — | VERIFIED |
| As Sand Cast | As Sand Cast (M01) · 20 °CSource values and qualifiersTensile Strength: 206.8 MPa (TYPICAL)Copper Development Association (CDA) — Yield Strength (0.5% Ext): 96.5 MPa (TYPICAL)Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 15 % (TYPICAL)Copper Development Association (CDA) — | — | 206.8 MPa | 96.5 MPa | 15 % | — | — | — | VERIFIED |
| As Sand Cast | As Sand Cast (M01)Source values and qualifiersBrinell Hardness: 65 HB (TYPICAL)Copper Development Association (CDA) — Fatigue Strength: 110.3 MPa (TYPICAL)10^8 cycles endurance limitCopper Development Association (CDA) — | — | — | — | — | — | 110.3 MPa | 65 HB | VERIFIED |
Hardness Integrity Notice: Rockwell B (HRB), Rockwell F (HRF), and Superficial 30T (HR30T) scales are reported on their measured scales without cross-scale mathematical conversion.
Source: See fact-level citations
Processing & Fabrication Characteristics
Machining, joining, forming, and thermal processing ratings cataloged from the cited authoritative technical reference.
Machinability
Machinability rating: 70% relative to free-cutting brass (C36000 = 100%).
Weldability & Joining
Soldering: Excellent; Brazing: Good; Oxyacetylene Welding: Not Recommended; Gas Shielded Arc Welding: Not Recommended; Coated Metal Arc Welding: Not Recommended
Comparable Grades & Cross-References
Carefully classified cross-reference relationships for C93200 Bearing Bronze (SAE 660). Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| C95400 Aluminum Bronze 9C | Copper Alloys | Commonly Compared | C93200 (SAE 660 High-Leaded Tin Bronze) is engineered for continuous sleeve bearings operating with boundary lubrication, providing anti-friction behavior and low shaft wear. C95400 Aluminum Bronze is a high-strength cast alloy designed for heavy loads and wear.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
Sources & Provenance Trail
Reference publications and standards organization registers cited across this material record.
Copper Development Association Inc.CDA Alloy C93200 Property & Specification Profile
AUTHORITATIVE BODY
Copper Development Association authoritative technical reference profile for C93200 Bearing Bronze (SAE 660).
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Copper Development Association Inc.CDA UNS Standard Designations Register (C93200)
AUTHORITATIVE BODY
Unified Numbering System (UNS) designation registration register confirming active C93200 status.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Intellectual Property & Provenance Notice: Mat Grades cites technical literature from recognized industry associations and standards organizations. Underlying technical standards and publication data remain the intellectual property of their respective issuing organizations.