C63200 Nickel-Aluminum Bronze (Naval Alloy)
Primary Designation:UNS C63200
Aliases:
Naval Nickel-Aluminum BronzeMIL-B-24480 alloyC63200
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:7 composition elements and 41 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
7.64 g/cm³TYPICAL · at 20 °C
Electrical Conductivity
7 % IACSTYPICAL · at 20 °C
Thermal Conductivity
34.61 W/(m·K)TYPICAL · at 20 °C
Specific Heat Capacity
439.6 J/(kg·K)TYPICAL · at 20 °C
Melting Range (Solidus / Liquidus)
1040.6 – 1060 °C1905.0 – 1940.0 °F
Solidus: 1040.6°C | Liquidus: 1060°CComposition Excerpt
Cu BALANCE wt%Copper (balance)
Standard Elemental Basis: BALANCEEngineering Summary
UNS C63200 Nickel-Aluminum Bronze (8.7-9.5% Al, 4.0-4.8% Ni, 3.5-4.3% Fe, 1.2-2.0% Mn) is a specialized marine alloy governed by MIL-B-24480 / ASTM B150. Formulated with iron strictly not exceeding nickel content, it delivers enhanced notch-toughness and impact resistance for submarine piping and naval defense hardware.
Documented Product Applications (Cited CDA Reference Profile)
- ›Bearing Cages: Mechanical Properties
- ›Bearing Cages: Softening Resistance
- ›Bolting: Corrosion Resistance
- ›Bolting: Mechanical Properties
- ›Bushings: Friction & Wear Properties
- ›Bushings: Mechanical Properties
- ›Bushings: Softening Resistance
- ›Cams: Corrosion Resistance
- ›Cams: Friction & Wear Properties
- ›Cams: Mechanical Properties
- ›Cams: Softening Resistance
- ›Drive Shafts, Marine Service: Corrosion Resistance
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Naval Nickel-Aluminum BronzeMIL-B-24480 alloyC63200
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 | C63200 | Unified Numbering System | Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C63200) |
| CDA | Alloy 632 | Copper Development Association Alloy Number | CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C63200) |
Recognized Commercial Aliases & Trade NamesCOMMON ALIAS
4 Listed| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| Nickel-Aluminum Bronze (Naval Alloy) | Standard Commercial Name | CDA Standard Commercial Name |
| Naval Nickel-Aluminum Bronze | Commercial Alias | Colloquial or commercial industry synonym |
| MIL-B-24480 alloy | Commercial Alias | Colloquial or commercial industry synonym |
| C63200 | Commercial Alias | Colloquial or commercial industry synonym |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
9 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| ASTM | ASTM B124/B124M | COPPER AND COPPER-ALLOY FORGING ROD, BAR AND SHAPES | Specification Reference |
| MILITARY | MILITARY MIL-E-23765/3 | ELECTRODES, WELDING, BARE, COPPER AND COPPER ALLOY | Specification Reference |
| AWS | AWS A5.6 | COPPER AND COPPER ALLOY COVERED ELECTRODES | Specification Reference |
| ASME | ASME SB283 | COPPER AND COPPER ALLOY DIE FORGINGS (HOT PRESSED) | Specification Reference |
| ASTM | ASTM B283/B283M | COPPER AND COPPER ALLOY DIE FORGINGS (HOT PRESSED) | Specification Reference |
| ASTM | ASTM B171/B171M | COPPER ALLOY CONDENSER TUBE PLATES | Specification Reference |
| ASME | ASME SB171 | COPPER ALLOY CONDENSER TUBE PLATES | Specification Reference |
| ASTM | ASTM B150/B150M | ALUMINUM BRONZE ROD, BAR AND SHAPES | Specification Reference |
| ASME | ASME SB150 | ALUMINUM BRONZE ROD, BAR, AND SHAPES | 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 | BALANCE | Balance | wt% | Remainder element (Copper).Ref: Copper Development Association (CDA) | VERIFIED |
| Lead | Pb | 82 | MAXIMUM | ≤ 0.02 | wt% | CDA chemical composition specification limits for C63200: max 0.02 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Iron | Fe | 26 | RANGE | 3.50 – 4.30 | wt% | CDA chemical composition specification limits for C63200: 3.5 - 4.3 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Nickel | Ni | 28 | RANGE | 4.00 – 4.80 | wt% | CDA chemical composition specification limits for C63200: 4.0 - 4.8 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Aluminum | Al | 13 | RANGE | 8.70 – 9.50 | wt% | CDA chemical composition specification limits for C63200: 8.7 - 9.5 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Manganese | Mn | 25 | RANGE | 1.20 – 2.00 | wt% | CDA chemical composition specification limits for C63200: 1.2 - 2.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Silicon | Si | 14 | MAXIMUM | ≤ 0.10 | wt% | CDA chemical composition specification limits for C63200: max 0.1 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 | 7.64 g/cm³ | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Density 0.276 lb/cu in. at 68°F (7.64 g/cm³ at 20°C) | 0.276 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 | 1060 °C | TYPICAL | CDA Physical Properties: Liquidus temperature 1940.0 °F (1060.0 °C) | 1940.0 °F | Copper Development Association Inc. | VERIFIED |
| Solidus Temperature | 1040.6 °C | TYPICAL | CDA Physical Properties: Solidus temperature 1905.0 °F (1040.6 °C) | 1905.0 °F | Copper Development Association Inc. | VERIFIED |
| Thermal Conductivity | 34.61 W/(m·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 20.0 Btu/(ft·hr·°F) (34.61 W/(m·K) at 20°C) | 20.0 Btu/ sq ft/ ft hr/ °F at 68°F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 16.2 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 9.0 µin/(in·°F) (16.2 µm/(m·K)) over range 68-57210°F | 9.0 10^-6 per °F | Copper Development Association Inc. | VERIFIED |
| Specific Heat Capacity | 439.6 J/(kg·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Specific heat 0.105 Btu/(lb·°F) (439.6 J/(kg·K)) | 0.105 Btu/ lb /°F at 68°F | Copper Development Association Inc. | VERIFIED |
| Annealing Temperature Range | 621.1 – 704.4 °C | RANGE | CDA Thermal Treatments: Annealing temperature range 1150 - 1300°F (621.1 - 704.4°C) | 1150 – 1300 °F | Copper Development Association Inc. | VERIFIED |
| Hot Working Temperature Range | 815.6 – 898.9 °C | RANGE | CDA Thermal Treatments: Hot working range 1500 - 1650°F (815.6 - 898.9°C) | 1500 – 1650 °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 | 7 % IACS | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Volume conductivity 7.0 % IACS at 68°F (20°C) | 7.0 % 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)
117.2 GPa
CDA Physical Properties: Elastic modulus in tension 17000.0 ksi (117.2 GPa)Modulus of Rigidity
44126.4 MPa
CDA Physical Properties: Shear modulus 6400.0 ksi (44126.4 MPa)Machinability Rating
30 %
CDA Fabrication Properties: Rating relative to Free-Cutting Brass (C36000 = 100%).Forgeability Rating
70 —
CDA Fabrication Properties: Relative forgeability rating.Showing 14 of 14 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Forgings | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 689.5 MPa (TYPICAL)Section Size: 5; Section Size: 5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 5; Section Size: 5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 22 % (TYPICAL)Section Size: 5; Section Size: 5 inCopper Development Association (CDA) — | 5 | 689.5 MPa | 310.3 MPa | 22 % | — | — | — | VERIFIED |
| Forgings | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 92 HRB (TYPICAL)Section Size: 5; Section Size: 5 inCopper Development Association (CDA) — | 5 | — | — | — | — | — | 92 HRB | VERIFIED |
| Plate | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 655 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 324.1 MPa (TYPICAL)Section Size: 0.5; Section Size: 0.5 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 22 % (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | 655 MPa | 324.1 MPa | 22 % | — | — | — | VERIFIED |
| Plate | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 89 HRB (TYPICAL)Section Size: 0.5; Section Size: 0.5 inCopper Development Association (CDA) — | 0.5 | — | — | — | — | — | 89 HRB | VERIFIED |
| Plate | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 689.5 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 344.7 MPa (TYPICAL)Section Size: 0.25; Section Size: 0.25 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 20 % (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | 689.5 MPa | 344.7 MPa | 20 % | — | — | — | VERIFIED |
| Plate | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 92 HRB (TYPICAL)Section Size: 0.25; Section Size: 0.25 inCopper Development Association (CDA) — | 0.25 | — | — | — | — | — | 92 HRB | VERIFIED |
| Plate | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 620.5 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 310.3 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 25 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | 620.5 MPa | 310.3 MPa | 25 % | — | — | — | VERIFIED |
| Plate | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 85 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | — | — | — | — | — | 85 HRB | VERIFIED |
| Rod | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 710.2 MPa (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 358.5 MPa (TYPICAL)Section Size: 2; Section Size: 2 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 24 % (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — | 2 | 710.2 MPa | 358.5 MPa | 24 % | — | — | — | VERIFIED |
| Rod | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 94 HRB (TYPICAL)Section Size: 2; Section Size: 2 inCopper Development Association (CDA) — | 2 | — | — | — | — | — | 94 HRB | VERIFIED |
| Rod | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 723.9 MPa (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 365.4 MPa (TYPICAL)Section Size: 1; Section Size: 1 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 22 % (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | 723.9 MPa | 365.4 MPa | 22 % | — | — | — | VERIFIED |
| Rod | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 96 HRB (TYPICAL)Section Size: 1; Section Size: 1 inCopper Development Association (CDA) — | 1 | — | — | — | — | — | 96 HRB | VERIFIED |
| Rod | Light Anneal (O50) · 20 °CSource values and qualifiersTensile Strength: 703.3 MPa (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 351.6 MPa (TYPICAL)Section Size: 3; Section Size: 3 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 24 % (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — | 3 | 703.3 MPa | 351.6 MPa | 24 % | — | — | — | VERIFIED |
| Rod | Light Anneal (O50)Source values and qualifiersRockwell B Hardness: 93 HRB (TYPICAL)Section Size: 3; Section Size: 3 inCopper Development Association (CDA) — | 3 | — | — | — | — | — | 93 HRB | 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: 30% relative to free-cutting brass (C36000 = 100%). Forgeability rating: 70.
Weldability & Joining
Soldering: Fair; Brazing: Fair; Oxyacetylene Welding: Not Recommended; Gas Shielded Arc Welding: Excellent; Coated Metal Arc Welding: Good; Spot Weld: Good; Seam Weld: Fair; Butt Weld: Good
Heat Treatment & Working Ranges
Annealing temperature range: 621.1°C to 704.4°C (1150°F - 1300°F). Hot working temperature range: 815.6°C to 898.9°C (1500°F - 1650°F).
Forming & Cold Working
Capacity for Being Cold Worked: Fair. Capacity for Being Hot Formed: Good.
Comparable Grades & Cross-References
Carefully classified cross-reference relationships for C63200 Nickel-Aluminum Bronze (Naval Alloy). Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| C63000 Nickel-Aluminum Bronze (AMS 4640) | Copper Alloys | Commonly Compared | C63200 is a modified wrought nickel-aluminum bronze governed by MIL-B-24480, engineered with Fe <= Ni to ensure high dynamic fracture toughness in marine shock environments; C63000 is an aerospace/commercial wrought alloy and cannot be substituted for MIL-B-24480 naval applications without engineering qualification.Materials serve different design priorities (e.g. higher strength vs superior corrosion resistance or cost). | VERIFIED | Side-by-Side Compare → |
| C95400 Aluminum Bronze 9C | Copper Alloys | Commonly Compared | C63200 is wrought naval Ni-Al bronze with superior impact toughness; C95400 is cast aluminum bronze for general heavy industrial duty.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 C63200 Property & Specification Profile
AUTHORITATIVE BODY
Copper Development Association authoritative technical reference profile for C63200 Nickel-Aluminum Bronze (Naval Alloy).
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Copper Development Association Inc.CDA UNS Standard Designations Register (C63200)
AUTHORITATIVE BODY
Unified Numbering System (UNS) designation registration register confirming active C63200 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.