C27200 Yellow Brass 63%
Primary Designation:UNS C27200
Aliases:
Yellow Brass 63%CuZn37 equivalentC27200
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:4 composition elements and 16 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
8.442 g/cm³TYPICAL · at 20 °C
Electrical Conductivity
27.6 % IACSTYPICAL · at 20 °C
Thermal Conductivity
115.96 W/(m·K)TYPICAL · at 20 °C
Specific Heat Capacity
376.8 J/(kg·K)TYPICAL · at 20 °C
Composition Excerpt
Cu 62–65 wt%Copper (range)
Standard Elemental Basis: RANGEEngineering Summary
UNS C27200 Yellow Brass 63% (62.0-65.0% Cu, Zn Remainder) is a versatile alpha brass with good cold formability and moderate strength, utilized in drawn seamless tubes, heat exchanger shells, pump cylinder liners, and fasteners.
Documented Product Applications (Cited CDA Reference Profile)
- ›Cold Headed Parts: Conductivity (Thermal)
- ›Cold Headed Parts: Corrosion Resistance
- ›Cold Headed Parts: Forming Characteristics
- ›Fasteners: Fasteners
- ›Fasteners: Forming Characteristics
- ›Fasteners: Mechanical Properties
- ›Heat Exchanger Shells: Corrosion Resistance
- ›Heat Exchanger Shells: Forming Characteristics
- ›Heat Exchanger Shells: Mechanical Properties
- ›Industrial: Cold Headed Parts
- ›Pump Cylinder Liners: Corrosion Resistance
- ›Pump Cylinder Liners: Forming Characteristics
Recognized Aliases
Source-backed commercial trade name and short designations cataloged in canonical data.
Yellow Brass 63%CuZn37 equivalentC27200
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 | C27200 | Unified Numbering System | Unified Numbering System standard designation for copper alloys (CDA / SAE / ASTM)Ref: CDA UNS Standard Designations Register (C27200) |
| CDA | Alloy 272 | Copper Development Association Alloy Number | CDA three-digit legacy designationRef: CDA UNS Standard Designations Register (C27200) |
Recognized Commercial Aliases & Trade NamesCOMMON ALIAS
3 Listed| Recognized Name / Alias | Classification | Technical Usage & Context |
|---|---|---|
| Yellow Brass 63% | Standard Commercial Name | CDA Standard Commercial Name |
| CuZn37 equivalent | Commercial Alias | Colloquial or commercial industry synonym |
| C27200 | Commercial Alias | Colloquial or commercial industry synonym |
Applicable Specifications & Product Form ReferencesSPECIFICATION REFERENCE
5 Applicable Standards| Standards Body | Specification Code | Specification Title / Scope | Relationship Type |
|---|---|---|---|
| ASTM | ASTM B36/B36M | BRASS PLATE, SHEET, STRIP AND ROLLED BAR | Specification Reference |
| ASTM | ASTM B135/B135M | Seamless Brass Tube | Specification Reference |
| ASTM | ASTM B587 | WELDED BRASS TUBE | Specification Reference |
| ASTM | ASTM B135 | Tube, Seamless | Specification Reference |
| ASME | ASME SB135 | SEAMLESS BRASS TUBE | 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 | 62.00 – 65.00 | wt% | CDA chemical composition specification limits for C27200: 62.0 - 65.0 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Lead | Pb | 82 | MAXIMUM | ≤ 0.07 | wt% | CDA chemical composition specification limits for C27200: max 0.07 wt%.Ref: Copper Development Association (CDA) | VERIFIED |
| Zinc | Zn | 30 | BALANCE | Balance | wt% | Remainder element (Zinc).Ref: Copper Development Association (CDA) | VERIFIED |
| Iron | Fe | 26 | MAXIMUM | ≤ 0.07 | wt% | CDA chemical composition specification limits for C27200: max 0.07 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 | 8.442 g/cm³ | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Density 0.305 lb/cu in. at 68°F (8.442 g/cm³ at 20°C) | 0.305 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 | 915.6 °C | TYPICAL | CDA Physical Properties: Liquidus temperature 1680.0 °F (915.6 °C) | 1680.0 °F | Copper Development Association Inc. | VERIFIED |
| Thermal Conductivity | 115.96 W/(m·K) | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Thermal conductivity 67.0 Btu/(ft·hr·°F) (115.96 W/(m·K) at 20°C) | 67.0 Btu/ sq ft/ ft hr/ °F at 68°F | Copper Development Association Inc. | VERIFIED |
| Coefficient of Thermal Expansion (CTE) | 20.52 µm/(m·K) | TYPICAL | CDA Physical Properties: CTE 11.4 µin/(in·°F) (20.52 µm/(m·K)) over range 68-57210°F | 11.4 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 | 27.6 % IACS | TYPICAL | Test Temp: 20 °CCDA Physical Properties: Volume conductivity 27.6 % IACS at 68°F (20°C) | 27.6 % 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)
103.4 GPa
CDA Physical Properties: Elastic modulus in tension 15000.0 ksi (103.4 GPa)Modulus of Rigidity
38610.6 MPa
CDA Physical Properties: Shear modulus 5600.0 ksi (38610.6 MPa)Showing 4 of 4 conditions
| Product Form | Temper / Condition | Section Size | Tensile (UTS) | Yield Strength | Elongation | Shear Strength | Fatigue Strength | Hardness (Scales Preserved) | Status |
|---|---|---|---|---|---|---|---|---|---|
| Tube | Hard Drawn (H80) · 20 °CSource values and qualifiersTensile Strength: 510.2 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 379.2 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 10 % (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 510.2 MPa | 379.2 MPa | 10 % | — | — | — | VERIFIED |
| Tube | Hard Drawn (H80)Source values and qualifiersRockwell F Hardness: 80 HRF (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | — | — | 80 HRF | VERIFIED |
| Tube | Nominal Grain Size 0.025 mm (OS025) · 20 °CSource values and qualifiersTensile Strength: 386.1 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — Yield Strength (0.5% Ext): 158.6 MPa (TYPICAL)Section Size: 0.065; Section Size: 0.065 in; Yield strength at 0.5% extension under loadCopper Development Association (CDA) — Elongation: 50 % (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | 386.1 MPa | 158.6 MPa | 50 % | — | — | — | VERIFIED |
| Tube | Nominal Grain Size 0.025 mm (OS025)Source values and qualifiersRockwell F Hardness: 82 HRF (TYPICAL)Section Size: 0.065; Section Size: 0.065 inCopper Development Association (CDA) — | 0.065 | — | — | — | — | — | 82 HRF | 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
Comparable Grades & Cross-References
Carefully classified cross-reference relationships for C27200 Yellow Brass 63%. Comparable does not mean equivalent.
| Related Material | Family | Relationship Classification | Metallurgical Notes & Differences | Status | Action |
|---|---|---|---|---|---|
| C27000 Yellow Brass 65% | Copper Alloys | Approximate Equivalent | C27200 Yellow Brass 63% and C27000 Yellow Brass 65% have differing Cu/Zn balance and forming response; substitution requires design review.Engineering substitution review required. Design calculations must verify temper, formability, and corrosion limits before specifying as a direct replacement. | VERIFIED | Side-by-Side Compare → |
| C26800 Yellow Brass 66% | Copper Alloys | Approximate Equivalent | C27200 has higher zinc content than C26800; not directly interchangeable without engineering review of deep drawing vs bending limits.Engineering substitution review required. Design calculations must verify temper, formability, and corrosion limits before specifying as a direct replacement. | 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 C27200 Property & Specification Profile
AUTHORITATIVE BODY
Copper Development Association authoritative technical reference profile for C27200 Yellow Brass 63%.
Issuing Body: Copper Development Association (CDA)View Source Record ↗
Copper Development Association Inc.CDA UNS Standard Designations Register (C27200)
AUTHORITATIVE BODY
Unified Numbering System (UNS) designation registration register confirming active C27200 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.