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CW504L CuZn28 Brass Sheet, Strip & Rod Supplier | Dongmeng Group
Xi'an Dongmeng Group Co., Ltd. supplies CW504L (CuZn28) brass alloy products for industrial manufacturers, metal distributors, stamping companies, and OEM component producers worldwide.
CW504L, also identified as CuZn28 / EN CW504L / DIN 2.0261, is a wrought copper-zinc alloy containing approximately 72% copper and 28% zinc. Its single-phase alpha-brass structure provides excellent cold formability, good ductility, and reliable performance in bending, stamping, drawing, and precision sheet-metal fabrication.
Our supply range focuses on CW504L brass sheets, plates, strips, coils, and rods, with additional processing options available according to customer specifications.
We support international B2B procurement with material selection assistance, custom dimensions, processing coordination, inspection documentation, and export packaging.
Request a CW504L Brass Quotation: Submit your required product form, dimensions, temper, quantity, and applicable material standard for technical review and pricing.
What Is CW504L (CuZn28) Brass Alloy?
CW504L is a wrought brass alloy containing approximately 72% copper and 28% zinc. It belongs to the alpha-brass family, characterized by a predominantly single-phase copper-zinc solid solution.
Compared with higher-zinc brass grades, CuZn28 generally provides better ductility and cold-forming capability, making it especially suitable for components manufactured through repeated forming operations.
The alloy combines good formability with useful mechanical strength, a characteristic yellow-gold appearance, and moderate electrical and thermal conductivity.
CW504L is particularly suitable for manufacturing applications where consistent forming behavior, controlled material temper, and reliable surface quality are more important than maximum machinability.
Key Characteristics of CW504L Brass
Excellent Cold Formability
Suitable for bending, stamping, shallow and deep drawing, and the manufacture of complex formed components.
Good Ductility
Annealed material can accommodate substantial plastic deformation before fracture, subject to component geometry and forming conditions.
Strain-Hardening Capability
Mechanical strength and hardness increase through cold working, allowing different strength and forming characteristics to be obtained through material temper selection.
Good Surface Finish
Supports polishing, decorative finishing, and surface coating for visible industrial or architectural components.
Useful Electrical and Thermal Conductivity
Suitable for selected connectors, conductive components, and heat-transfer applications where its conductivity meets the design requirements.
Low Lead Content
The alloy has a low specified lead limit compared with conventional leaded free-machining brasses. Compliance with specific environmental or drinking-water regulations must be verified separately.
CW504L Brass Specifications and Available Product Forms
CW504L can be supplied in different wrought product forms depending on manufacturing requirements and material availability.
Product Forms and Typical Inquiry Sizes
| Product Form | Typical Inquiry Dimensions | Main Applications |
|---|---|---|
| Brass Strip | Thickness 0.10–3.00 mm (0.004–0.118 in) | Stamping, bending, connectors |
| Brass Coil | Thickness 0.10–3.00 mm (0.004–0.118 in) | Continuous forming and stamping |
| Brass Sheet | Thickness 0.30–6.00 mm (0.012–0.236 in) | Deep drawing, decorative panels |
| Brass Plate | Custom thickness and dimensions | Fabricated industrial components |
| Round Brass Rod | Diameter 4–80 mm (0.16–3.15 in) | General-purpose components |
| Brass Wire | Diameter according to specification | Formed wire components |
| Custom Profiles | According to customer drawings | OEM manufacturing |
Dimensions are indicative quotation ranges, not guaranteed stock availability. Final sizes, tolerances, and manufacturing feasibility must be confirmed before ordering.
Sheet and Strip Ordering Parameters
| Parameter | Available Options |
|---|---|
| Material | CW504L / CuZn28 |
| Manufacturing Process | Cold rolling / annealing / slitting |
| Temper | Soft annealed / strain hardened |
| Thickness | According to purchase specification |
| Width | Standard or precision slit |
| Length | Coil or cut-to-length sheet |
| Surface | Mill finish / polished / specified finish |
| Edge Condition | Mill edge / slit edge / deburred edge |
| Coil Inner Diameter | Selected according to processing requirements |
| Packaging | Moisture-protected coils, bundles, or pallets |
For precision stamping and deep drawing, buyers should specify material temper, grain-size requirements where relevant, thickness tolerance, edge quality, and surface-defect acceptance criteria.
CW504L / CuZn28 Chemical Composition
The following table provides the commonly specified chemical composition limits for CW504L (CuZn28).
Chemical Composition – Weight Percentage (%)
| Element | Symbol | Composition |
|---|---|---|
| Copper | Cu | 71.0–73.0% |
| Zinc | Zn | Balance |
| Aluminum | Al | ≤0.02% |
| Iron | Fe | ≤0.05% |
| Nickel | Ni | ≤0.30% |
| Lead | Pb | ≤0.05% |
| Tin | Sn | ≤0.10% |
| Other Elements, Total | - | ≤0.10% |
Nominal Composition: Cu 72% / Zn 28%
The copper-rich composition contributes to the alloy's cold-forming capability and its characteristic brass appearance.
Actual chemical composition must be verified against the applicable material standard and the mill test certificate supplied for the production batch.
Why Chemical Composition Matters
Copper and zinc content directly influence mechanical strength, ductility, conductivity, and forming behavior.
CW504L's lower zinc content generally provides greater cold-forming flexibility than brass grades containing approximately 37–40% zinc.
Controlled residual-element content is also important for applications requiring consistent processing behavior and regulated material composition.
Mechanical Properties of CW504L Brass
CW504L mechanical properties depend on product thickness, manufacturing process, and delivery temper.
Annealed material generally offers better ductility, while cold-worked material provides higher tensile strength and hardness.
Representative Mechanical Properties – Brass Strip
| Material Condition | Tensile Strength Rm (MPa) | Elongation (%) | Hardness (HV) |
|---|---|---|---|
| R270 | 270–350 | ≥40 | 55–90 |
| R350 | 350–430 | ≥21 | 95–125 |
| R410 | 410–490 | ≥9 | 120–155 |
| R480 | 480–560 | ≥4 | 150–180 |
| R550 | 550–640 | ≥2 | 170–200 |
These are representative supplier-datasheet values for relevant strip conditions. They are not universal guaranteed properties for every thickness or product form. Mechanical acceptance requirements must follow the specified standard, dimensions, temper, and agreed test method.
Mechanical Properties for General-Purpose Rods
For CW504L rods, conditions such as R310, R370, and R460 may be specified for suitable diameter ranges under applicable rod standards.
The correct condition should be selected according to the required balance of strength, ductility, and manufacturing process.
Temper Selection Guidelines
Soft / Annealed: Recommended for deep drawing, complex bending, and applications requiring maximum ductility.
Intermediate Strength Conditions: Appropriate for stamping and forming operations requiring a balance of formability and strength.
Hard Conditions: Suitable for relatively simple formed components and applications requiring greater stiffness or mechanical strength.
For deep-drawn parts, buyers should specify the target forming operation and request appropriate grain-size and mechanical-property control.
CW504L Brass Physical Properties
The following values are representative reference properties of CuZn28 brass at or near room temperature.
| Property | Typical Value | Unit |
|---|---|---|
| Density | Approximately 8.55–8.57 | g/cm³ |
| Melting Range | Approximately 915–965 | °C |
| Elastic Modulus | Approximately 114–116 | GPa |
| Electrical Conductivity | Approximately 16.5–16.9 | MS/m |
| Electrical Conductivity | Approximately 28–29 | % IACS |
| Thermal Conductivity | Approximately 124–130 | W/(m·K) |
| Thermal Expansion Coefficient | Approximately 19.7 × 10⁻⁶ | K⁻¹ |
Physical values vary with composition, temperature, and material condition. Design calculations should use project-approved material data.
Electrical Conductivity
CuZn28 offers moderate electrical conductivity compared with pure copper.
It can be considered for selected electrical components where mechanical formability and corrosion behavior are also important.
For applications requiring maximum conductivity, high-conductivity copper grades may be more suitable.
Thermal Conductivity
CW504L offers useful thermal conductivity for selected formed components and thermal-transfer applications.
However, suitability for heat exchangers or other fluid-contact equipment must also consider corrosion conditions, design pressure, operating temperature, and the applicable product standard.
CW504L Brass Manufacturing and Processing
Cold Rolling and Annealing
CW504L sheet and strip products are commonly produced through rolling and annealing operations.
Cold rolling reduces material thickness and increases strength through strain hardening.
Annealing restores ductility and helps develop the required microstructure for subsequent forming.
Deep Drawing and Metal Stamping
CW504L is particularly well suited to cold-forming applications.
Typical manufacturing processes include:
Precision stamping
Deep drawing
Bending and folding
Metal spinning
Punching and blanking
Embossing
Progressive-die forming
For demanding deep-drawing applications, the material specification should control temper, grain size, thickness uniformity, surface lubrication, and forming direction.
Machining
CW504L can be machined using appropriate tooling, speeds, and lubrication.
However, it is not a free-machining brass grade.
Where high-speed automatic machining and chip-breaking performance are the main priorities, an appropriately specified free-machining brass may provide better productivity.
Welding, Brazing, and Joining
CW504L can be joined using suitable brazing and welding procedures.
Brazing is often a practical method for joining brass components.
During thermal joining, zinc evaporation, distortion, and changes in material properties must be considered.
The joining process should be qualified according to component geometry, required strength, and operating conditions.
Surface Finishing
CW504L supports various finishing processes, including:
Mechanical polishing
Brushing
Decorative surface finishing
Electroplating
Protective coating
Custom surface treatment
Surface-finish requirements should be agreed before production, particularly for decorative components and visible fabricated parts.
Corrosion Resistance and Application Limitations
CW504L offers useful corrosion resistance in many indoor, atmospheric, and relatively mild environments.
However, brass corrosion performance depends strongly on the surrounding medium, temperature, stress, and exposure conditions.
Atmospheric Exposure
CW504L is suitable for many indoor decorative and industrial components.
Surface oxidation and tarnishing can develop with exposure and may be controlled through appropriate finishing or protective coatings.
Water Exposure
Some freshwater applications may be suitable, subject to water chemistry and service conditions.
For continuously wetted components, buyers should assess dezincification risk, local regulations, and the need for application-specific corrosion testing.
Ammonia and Stress Corrosion Cracking
Copper-zinc alloys can be susceptible to stress corrosion cracking in certain ammonia-containing environments, especially when significant residual or applied tensile stresses are present.
Stress-relief treatment and alloy selection should be evaluated for susceptible applications.
Marine and Chemical Environments
CW504L should not automatically be treated as a marine-grade or dezincification-resistant brass.
For seawater, aggressive chemicals, or demanding fluid-handling systems, specialized copper alloys may offer more reliable service performance.
Material Selection Notice: CW504L is primarily recommended for formed and fabricated components. Pressure-containing valves, pumps, drinking-water systems, and safety-critical equipment require separate material suitability and regulatory verification.
CW504L vs CW505L vs CW508L Brass
Choosing the correct brass grade is important for achieving reliable manufacturing performance.
| Property | CW504L | CW505L | CW508L |
|---|---|---|---|
| Alloy Designation | CuZn28 | CuZn30 | CuZn37 |
| Nominal Copper | 72% | 70% | 63% |
| Nominal Zinc | 28% | 30% | 37% |
| EN Material No. | CW504L | CW505L | CW508L |
| Common UNS Reference | C25600 | C26000 | C27200 |
| Cold Formability | Excellent | Excellent | Good to excellent |
| Main Advantage | High ductility | Balanced forming performance | Economical general forming |
| Common Applications | Deep drawing, stamping | Cartridge brass products, drawing | Stamping, formed components |
When Should You Choose CW504L?
Select CW504L when complex forming operations, high ductility, and reliable cold-working performance are primary requirements.
When Is CW508L More Suitable?
CW508L may be preferable where standard cold-forming capability is sufficient and raw-material cost is an important factor.
What About Free-Machining Brass?
For complex turned parts produced at high machining rates, buyers should evaluate a suitable free-machining alloy instead of automatically selecting CW504L.
The final choice should consider machining speed, lead restrictions, corrosion conditions, mechanical requirements, and regulatory compliance.
CW504L Brass Applications
Precision Metal Stamping
CW504L strips and coils are suitable for stamped components requiring consistent deformation and controlled mechanical properties.
Typical components include brackets, formed covers, clips, and precision hardware.
Deep-Drawn Components
The alloy's ductility supports the production of shaped metal components using drawing and pressing processes.
Potential applications include formed housings, decorative shells, and selected thin-wall components.
Electrical and Electronic Components
CW504L can be used for formed conductive parts, selected terminals, connector components, and electrical hardware when its conductivity and mechanical properties meet the design specification.
Decorative and Architectural Hardware
CW504L provides a yellow-gold appearance and supports polishing and surface treatment.
Applications include decorative trim, handles, ornamental fittings, and architectural components.
Instrument and Precision Components
The alloy may be selected for precision-formed parts used in instruments, mechanical assemblies, and consumer-product hardware.
OEM Metal Fabrication
CW504L sheets, coils, and strips provide a versatile starting material for custom stamped and fabricated components.
The appropriate temper and dimensional tolerances should be specified according to downstream processing requirements.
CW504L Brass Product Standards and International Designations
| Standard / System | Designation or Application |
|---|---|
| EN Alloy Designation | CuZn28 |
| EN Material Number | CW504L |
| DIN Material Number | 2.0261 |
| UNS Reference | C25600 |
| EN 1652 | Plate, sheet, strip, and circles for general purposes |
| EN 12163 | Rod for general purposes |
| EN 12166 | Wire for general purposes |
| EN 12449 | Seamless round tubes for general purposes, where applicable |
| EN 10204 | Material inspection documentation |
Important Purchasing Note
An international alloy cross-reference does not automatically establish compliance with every ASTM, EN, DIN, or other product standard.
Chemical composition, product dimensions, mechanical properties, delivery condition, testing requirements, and certification must be checked against the governing purchase specification.
Where an ASTM or other national standard is required, the applicable alloy designation and product specification should be confirmed before order acceptance.
Inspection & Quality Assurance
Xi'an Dongmeng Group Co., Ltd. supports customer-defined inspection and quality documentation requirements for CW504L brass products.
Chemical Composition Verification
Chemical analysis is used to verify the specified copper, zinc, and residual-element limits.
Suitable calibrated analytical methods should be selected according to the required elements and detection limits.
Mechanical Property Testing
Depending on the product and purchase specification, mechanical testing may include:
Tensile strength
Yield strength
Elongation
Hardness
Grain-size examination
Dimensional Inspection
Dimensional verification may cover:
Thickness and width
Diameter and length
Flatness and straightness
Edge condition
Coil dimensions
Application-specific tolerances
Surface Quality Inspection
Surface inspection focuses on visible and functional defects that may affect subsequent forming or finishing.
Particular attention is given to scratches, dents, edge damage, oxidation, and other imperfections according to the agreed acceptance criteria.
Documentation and Traceability
Available inspection arrangements may include:
Material Identification: Alloy grade and material condition
Chemical Analysis: Composition verification
Mechanical Reports: Relevant test values
Dimensional Reports: Inspection records where specified
Material Certification: EN 10204 3.1 inspection certificate when agreed and available
Third-Party Inspection: Independent inspection arrangements upon request
All required inspection documents should be identified during quotation and purchase-order review.
Product Delivery Standards
CW504L brass materials are supplied according to the agreed technical specification, processing requirements, and commercial terms.
| Delivery Item | Description |
|---|---|
| Alloy Grade | CW504L / CuZn28 |
| Material Condition | Annealed or strain-hardened, as specified |
| Product Form | Sheet, plate, strip, coil, or rod |
| Manufacturing | Rolled, drawn, cut, or further processed |
| Dimensional Tolerance | According to applicable standard and purchase order |
| Surface Condition | Mill finish or agreed custom finish |
| Edge Condition | Mill edge, slit edge, or specified treatment |
| Material Identification | Grade, size, batch identification |
| Inspection Documents | As specified in the purchase order |
| Packaging | Export-suitable protective packaging |
| Delivery Schedule | Confirmed according to product and order quantity |
Packaging and Transportation
Brass Sheets and Plates: Protective interleaving, moisture-resistant wrapping, and suitable pallet packaging.
Brass Strips and Coils: Protective wrapping and secure packaging to reduce edge and surface damage.
Brass Rods: Bundled or boxed according to dimensions and handling requirements.
Custom Components: Protective packaging appropriate to component geometry and surface requirements.
Export packing and shipment arrangements can be coordinated according to the destination and purchase terms.
Custom CW504L Brass Processing Services
We support the sourcing and processing of CW504L brass products according to industrial customer requirements.
Precision Slitting
Brass strips can be prepared to specified widths for continuous stamping and forming operations.
Cut-to-Length Processing
Sheets and rods can be supplied in specified lengths according to the agreed processing plan.
Surface Finishing
Polishing, brushing, or other finishing requirements can be reviewed according to the intended application.
OEM Components
Customers may submit engineering drawings for manufacturing feasibility review, material selection, and processing coordination.
Technical Material Selection
Our team can assist with comparing CW504L against other brass grades based on forming behavior, mechanical properties, procurement requirements, and operating conditions.
For OEM quotations, please provide drawings, tolerances, annual demand, and required inspection documents.
Why Choose Xi'an Dongmeng Group Co., Ltd.?
Industrial Material Supply
We supply brass and other metal products for international industrial procurement, distribution, and manufacturing applications.
Technical Specification Support
We help customers identify appropriate material grades, dimensions, delivery conditions, and testing requirements before ordering.
Customized Processing
Our supply services support custom cutting, slitting, finishing, and OEM requirements subject to production feasibility.
Quality Documentation
Inspection and certification requirements can be reviewed and arranged according to the purchase specification.
International Export Support
We coordinate export documentation, protective packaging, and shipping arrangements for international customers.
Long-Term B2B Cooperation
We support both project-based material sourcing and recurring procurement requirements for distributors, OEM manufacturers, and industrial buyers.
Frequently Asked Questions About CW504L Brass
Q1. What is CW504L brass?
CW504L is a wrought copper-zinc brass alloy designated CuZn28. It contains approximately 72% copper and 28% zinc and is valued for its excellent cold-forming properties.
Q2. Is CW504L the same as CuZn37?
No. CW504L corresponds to CuZn28, while CuZn37 corresponds to CW508L. They have different chemical compositions and must not be treated as identical grades.
Q3. What is the UNS equivalent of CW504L?
C25600 is a commonly cited UNS cross-reference for CW504L / CuZn28. The applicable product standard and chemical and mechanical requirements should be checked before substitution.
Q4. Is CW504L suitable for deep drawing?
Yes. CW504L has excellent cold-forming characteristics, particularly when supplied in an appropriate annealed condition. Grain size, temper, lubrication, and forming geometry should be considered.
Q5. What is the difference between CW504L and CW508L?
CW504L contains approximately 28% zinc and generally offers better ductility for demanding forming operations. CW508L contains approximately 37% zinc and is commonly selected for economical general-purpose cold forming.
Q6. Can CW504L brass be machined?
Yes, CW504L can be machined. However, its primary advantage is cold formability rather than free-machining performance. For high-volume automatic machining, another brass grade may be more appropriate.
Q7. Is CW504L brass corrosion resistant?
It performs satisfactorily in many mild environments, but it is not automatically suitable for seawater, aggressive chemicals, or continuously wetted applications. Dezincification and stress corrosion cracking should be considered where relevant.
Q8. What product forms are available?
CW504L is commonly specified in sheet, strip, coil, and rod forms. Other forms may be considered according to the relevant product standard and confirmed manufacturing availability.
Q9. Can you provide custom thicknesses, widths, and tempers?
Custom specifications can be reviewed. Please provide the required dimensions, tolerance, temper, quantity, and intended manufacturing process.
Q10. What information is required for a quotation?
Please provide the alloy grade, product form, dimensions, material condition, applicable standard, order quantity, delivery destination, and any inspection or certification requirements.
Contact Us – Request a CW504L Brass Quotation
Xi'an Dongmeng Group Co., Ltd.
CW504L CuZn28 Brass Sheet, Strip, Coil & Rod Supplier
We welcome inquiries from international metal distributors, precision stamping manufacturers, industrial OEM companies, and project procurement teams.
Whether you require brass sheets for drawing operations, precision slit coils for stamping, or material for custom fabrication, our team can review your specifications and coordinate a suitable supply solution.
Request a Quotation
Please include the following details in your inquiry:
Material: CW504L / CuZn28
Product Form: Sheet / Strip / Coil / Plate / Rod
Dimensions: Thickness × Width × Length or Diameter × Length
Temper: Annealed / Specified Strength Condition
Quantity: Required Order Volume
Standard: EN 1652 / EN 12163 / Other Applicable Specification
Inspection: Chemical Analysis / Mechanical Testing / MTC 3.1
Destination: Country and Delivery Port
Office Information
Company: Xi'an Dongmeng Group Co., Ltd.
Address: Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province, China
Phone / WhatsApp: +86 15769214734
Email: office@dongmjd.com
Contact our team today for CW504L brass product specifications, processing options, and a customized quotation.
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