Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of C27400 Brass Alloy (CuZn37 / CW508L) in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
C27400 Brass Sheet, Strip & Coil | CuZn37 Yellow Brass Supplier
Xi'an Dongmeng Group Co., Ltd. supplies C27400 yellow brass sheet, strip, coil and customized semi-finished brass products for industrial manufacturers, metal stamping companies, distributors and OEM buyers worldwide.
C27400 is a wrought copper-zinc alloy commonly described as 63/37 yellow brass. It provides a practical combination of cold formability, strength, surface quality and processing versatility for precision stamping, bending, drawing and general industrial fabrication.
Our supply services support customized thicknesses, widths, tempers, surface finishes and inspection requirements. Buyers can submit technical drawings or material specifications for production planning, material selection and quotation.
What Is C27400 Brass Alloy?
C27400 is a copper-zinc wrought alloy classified as yellow brass. It contains approximately 63% copper, with zinc making up most of the remaining composition.
The alloy is commonly used in applications requiring a combination of mechanical strength, ductility, corrosion resistance in suitable environments, and an attractive yellow metallic appearance.
Its properties can be adjusted through cold working and annealing.
Soft material is generally preferred where substantial deformation is required, while cold-worked tempers provide higher strength and hardness for formed components.
C27400 can be selected for:
Precision metal stamping and progressive-die operations
Sheet metal bending and forming
Deep-drawn shells, cups and casings
Decorative brass hardware
Industrial fasteners and formed components
Plumbing accessories and general engineering parts
Selected thermal and electrical components
Although C27400 is often compared with European CuZn37/CW508L, buyers should verify chemical composition, mechanical properties and applicable product standards before treating these designations as interchangeable.
For severe deep-drawing operations, C26000 cartridge brass may offer greater forming ductility and should also be evaluated.
C27400 Brass Sheet, Strip and Coil Specifications
Our C27400 brass supply program supports different product formats for industrial fabrication and manufacturing.
The dimensions below represent indicative enquiry ranges. Actual availability depends on product form, temper, processing route and mill capability.
| Specification | Metric | Imperial |
|---|---|---|
| Alloy | UNS C27400 | 63/37 Yellow Brass |
| Sheet / Strip Thickness | 0.10–6.0 mm | 0.0039–0.236 in |
| Width | 10–1500 mm | 0.394–59.06 in |
| Sheet Length | 1000–6000 mm | 39.37–236.22 in |
| Common Coil Inner Diameters | 200 / 300 / 400 / 508 mm | 7.87 / 11.81 / 15.75 / 20 in |
| Available Temper Categories | Annealed / Cold Worked | Soft / Half Hard / Hard |
| Surface Finish | Mill Finish / Bright / Polished | As Specified |
| Edge Condition | Mill Edge / Slit Edge / Deburred | Custom |
| Coil Weight | Subject to Agreement | Subject to Agreement |
| Dimensional Tolerance | According to Applicable Standard or Drawing | Custom Inspection |
| Packaging | Moisture-Protected Export Packaging | Customized |
Important: Not every combination of thickness, width, form and temper is available. Final dimensions and tolerances must be confirmed before order acceptance.
C27400 Brass Sheet and Plate
Brass sheets are suitable for sheet metal fabrication, stamping blanks, decorative panels and formed components.
Available processing options may include:
Precision cut-to-length processing
Surface polishing
Protective film application
Customized blank dimensions
Flatness and dimensional inspection
C27400 Brass Strip
C27400 brass strip is used in continuous manufacturing operations where stable dimensions and mechanical consistency are important.
Important ordering parameters include strip thickness, width, temper, edge quality and coil configuration.
C27400 Brass Coil
Coil products support continuous feeding into stamping presses, forming equipment and downstream processing lines.
Coil selection should consider:
Inside and outside diameter
Maximum coil weight
Width and thickness tolerances
Coil set and flatness
Surface protection
Burr control and winding quality
C27400 Brass Rod and Wire
C27400 is also used in rod, bar and wire products for forming, cold heading and general engineering applications.
Product requirements should be specified separately because applicable ASTM standards and mechanical properties differ from those used for flat-rolled products.
C27400 Brass Chemical Composition
The chemical composition of UNS C27400 is based on the copper-zinc alloy designation.
UNS C27400 Chemical Composition
| Element | Chemical Symbol | Content (%) |
|---|---|---|
| Copper | Cu | 61.0–64.0 |
| Zinc | Zn | Remainder |
| Lead | Pb | 0.09 max |
| Iron | Fe | 0.05 max |
Reference: Copper Development Association / UNS C27400 composition data.
The precise chemical requirements should be confirmed against the applicable product specification.
Comparison with EN CW508L / CuZn37
| Element | UNS C27400 | EN CW508L / CuZn37 |
|---|---|---|
| Copper | 61.0–64.0% | 62.0–64.0% |
| Zinc | Balance | Balance |
| Lead | ≤0.09% | ≤0.10% |
| Iron | ≤0.05% | ≤0.10% |
The EN composition also includes limits for other elements according to the applicable specification.
Technical Note: C27400 and CW508L overlap in composition but have different specified limits. Material certification should identify the actual grade and governing standard rather than assuming automatic equivalence.
Mechanical Properties of C27400 Brass
The mechanical properties of C27400 depend strongly on cold reduction, annealing and the final supplied temper.
Cold working increases strength and hardness while reducing elongation.
Annealing restores ductility and improves performance in demanding forming operations.
Representative Mechanical Properties by Temper
| Temper | Tensile Strength (MPa) | Yield Strength Rp0.2 (MPa) | Elongation (%) | Hardness (HV) |
|---|---|---|---|---|
| Soft / Annealed | 300–370 | ≥179 | ≥38 | 55–95 |
| H02 | 370–440 | ≥200 | ≥19 | 100–130 |
| H03 | 410–490 | ≥300 | ≥8 | 120–155 |
| H04 | 440–540 | ≥370 | ≥6 | 130–165 |
| H06 | 540–610 | ≥490 | ≥2 | 165–195 |
Reference: Representative producer data for C27400/CuZn37 rolled material.
These values are provided for material selection and preliminary engineering reference. They are not universal acceptance limits for every product form, thickness or governing standard.
Actual delivery requirements must be agreed in the purchase specification.
How Does Temper Affect Performance?
Soft / Annealed
Recommended for applications requiring substantial deformation, such as deep drawing, forming and complex bending.
H02
Provides an intermediate combination of strength and ductility for stamping, formed hardware and general manufacturing.
H03
Offers higher strength for components where greater rigidity is required and forming deformation is more limited.
H04
Suitable for applications requiring increased hardness and dimensional stability, with reduced forming capability compared with soft material.
H06
Provides higher strength and hardness but considerably lower elongation. It is more appropriate for limited-deformation operations than severe deep drawing.
Selecting the Correct Temper
For deep-drawn components, tensile properties alone may not be sufficient.
Manufacturers should also consider:
Grain size
Forming direction
Blank geometry
Bend radius
Surface condition
Lubrication
Forming speed
Residual stress
Trial stamping or forming tests are recommended for demanding applications.
Physical Properties of C27400 Brass
| Property | Typical Value |
|---|---|
| Density | 8.44 g/cm³ |
| Density | 0.305 lb/in³ |
| Thermal Conductivity | Approximately 116 W/m·K |
| Electrical Conductivity | Approximately 27% IACS |
| Electrical Conductivity | Approximately 15.8 MS/m |
| Modulus of Elasticity | Approximately 110 GPa |
| Specific Heat Capacity | Approximately 0.377 kJ/kg·K |
| Coefficient of Thermal Expansion | Approximately 20.5 × 10⁻⁶/K |
| Approximate Melting Temperature | Around 920°C |
Values are representative at or near room temperature unless otherwise stated. Electrical and mechanical properties may vary with material condition.
Thermal and Electrical Performance
C27400 provides useful thermal and electrical conductivity for selected industrial components.
However, its conductivity is substantially lower than that of high-purity copper.
For applications where electrical conductivity is the primary design requirement, higher-conductivity copper alloys should be considered.
C27400 Brass Manufacturing and Processing
Cold Rolling
Cold rolling improves thickness control, surface quality and mechanical strength.
The amount of cold reduction influences hardness, tensile strength and ductility.
Annealing
Annealing is used to restore ductility after cold working.
The final annealing process should be selected according to the required mechanical properties and grain structure.
Precision Slitting
For stamping applications, slitting quality directly influences downstream processing performance.
Important characteristics include:
Strip width consistency
Burr height
Edge deformation
Camber
Surface scratches
Coil winding quality
For high-speed progressive stamping, customers should specify maximum burr height, edge condition and strip geometry in the purchasing documents.
Cut-to-Length Processing
Coils may be processed into sheets and blanks according to customer requirements.
Typical inspection items include length, width, squareness, flatness and surface quality.
Surface Finishing
Available finishing requirements may include bright mill finish, polishing, brushing and protective surface treatment.
The specific finish should be agreed using reference samples or measurable surface criteria.
C27400 Brass Formability and Deep Drawing Performance
C27400 is commonly selected for cold-forming operations because it offers a useful balance between ductility and strength.
It can be used for stamping, bending and drawing when the appropriate temper and processing conditions are selected.
Deep Drawing
Soft or annealed material is generally preferred for deep-drawing operations.
Important factors include:
Material Grain Size
Grain size influences forming behavior and surface appearance.
An unsuitable grain structure may contribute to surface roughening or inconsistent drawing performance.
Sheet Thickness Consistency
Thickness variation can influence material flow, drawing force and final part dimensions.
Surface Quality
Scratches and edge defects may become initiation points for cracking during deformation.
Lubrication
Correct lubrication reduces friction and helps control material movement during forming.
Tooling Design
Die geometry, punch radius, blank-holder force and forming speed affect the final component quality.
Bending
Bending performance depends on temper, thickness and bend orientation relative to the rolling direction.
Soft material generally permits tighter bending than heavily cold-worked material.
For precision components, bend-radius requirements should be verified through material data and production trials.
Is C27400 the Best Brass for Deep Drawing?
Not necessarily.
C26000, containing approximately 70% copper, is widely recognized for excellent deep-drawing ductility.
C27400 may be selected where its composition, strength, forming performance and commercial requirements suit the application.
For severe drawing operations, compare C27400 and C26000 using the actual supplied temper and trial production results.
Machining, Soldering and Brazing
Machinability
C27400 can be machined using suitable cutting tools and machining parameters.
However, it is not a free-machining brass such as leaded C36000.
Machining operations should account for chip formation, tool selection and surface finish requirements.
Soldering
C27400 generally offers very good soldering characteristics when surfaces are properly cleaned and appropriate fluxes are used.
Brazing
Brazing is a suitable joining method for many C27400 components.
Joint design, filler selection, temperature control and surface preparation are important for consistent results.
Welding
Fusion welding may be more challenging than soldering or brazing because zinc-containing alloys can experience zinc volatilization, porosity and other welding defects.
Where welding is necessary, the process should be qualified for the particular component and service requirements.
Surface Treatment
C27400 brass can be finished for decorative or functional applications using processes such as polishing and electroplating preparation.
Customers should define the required appearance, adhesion criteria and corrosion performance.
C27400 Brass Corrosion Resistance
C27400 has useful corrosion resistance in many general atmospheric and indoor environments.
However, corrosion performance depends on moisture, chemical exposure, temperature, residual stress and service conditions.
Atmospheric Exposure
Brass develops surface oxides and may gradually darken or tarnish.
Decorative components may require polishing, protective coating or regular maintenance.
Dezincification
Brass containing significant zinc can be susceptible to selective zinc removal in certain corrosive environments.
This process is known as dezincification.
C27400 should not be assumed to possess the same dezincification resistance as a specifically engineered DZR brass.
Stress Corrosion Cracking
Cold-worked brass may be susceptible to stress corrosion cracking when tensile stresses and aggressive environments occur together.
Moist ammonia and ammonia-containing compounds are particularly important exposure concerns.
Appropriate material selection, stress control and qualified stress-relief treatment may reduce risk.
Marine and Chemical Environments
Standard C27400 brass is not automatically suitable for continuous seawater exposure, aggressive chemical service or critical heat exchanger tubing.
For these applications, alternative copper alloys or corrosion-resistant materials should be evaluated.
C27400 vs C26000 vs C27200 vs C28000 Brass
Different brass grades provide different combinations of copper content, formability, strength and processing characteristics.
| Grade | Nominal Composition | Key Characteristics | Common Selection Considerations |
|---|---|---|---|
| C26000 | 70Cu / 30Zn | Excellent cold forming and deep drawing | Severe drawing, precision formed components |
| C27200 | Approximately 63Cu / 37Zn | Similar yellow brass composition | Sheet, strip and general forming |
| C27400 | Approximately 63Cu / 37Zn | Cold formability and moderate strength | Stamping, hardware and general fabrication |
| C28000 | Approximately 60Cu / 40Zn | Muntz metal; different hot-working characteristics | Hot-worked and general engineering products |
C27400 vs C26000
C26000 contains more copper and is particularly well known for deep drawing and cold-forming applications.
C27400 provides an alternative composition for manufacturing operations where the required forming performance can be achieved.
C27400 vs C27200
The chemical composition ranges of C27400 and C27200 overlap.
However, the UNS composition limits and applicable material specifications are not identical.
Customers should confirm the exact alloy requested by their drawings or engineering specifications.
C27400 vs C28000
C28000 has a higher nominal zinc content.
It is commonly associated with hot-working applications and should not automatically replace C27400 in demanding cold-forming operations.
Engineering Selection Recommendation
Material selection should consider more than nominal copper content.
The correct choice depends on forming severity, product dimensions, mechanical properties, operating environment, surface requirements and total manufacturing cost.
C27400 Brass International Standards and Equivalents
| Standard System | Designation | Description |
|---|---|---|
| UNS | C27400 | Yellow Brass, approximately 63% copper |
| EN | CW508L | Related European brass designation |
| EN Symbol | CuZn37 | Copper-zinc alloy with approximately 37% zinc |
| EN Material Number | 2.0321 | Common designation associated with CW508L |
| JIS | C2720 | Approximate comparable brass grade |
| GB | H62 | Approximate comparable brass grade |
Important: The table provides commonly used international cross-references, not a guarantee of identical requirements.
Material substitution must be approved against the relevant chemical, mechanical and product-form specifications.
Applicable Product Standards
| Product Form | Reference Standard | Scope |
|---|---|---|
| C27400 Brass Wire | ASTM B134/B134M | Brass wire |
| C27400 Seamless Tube | ASTM B135/B135M | Seamless brass tube |
| C27400 Rod, Bar and Shapes | ASTM B927/B927M | Brass rod, bar and shapes |
| CW508L Sheet, Strip and Plate | EN 1652 | Copper alloy flat-rolled products |
| CW508L Tube | EN 12449 | Seamless round tubes for general purposes |
For C27400 flat-rolled products ordered under an American specification, the applicable requirements must be explicitly agreed with the supplier.
ASTM B36/B36M should not be automatically assigned to UNS C27400 because the standard does not list this UNS designation in its alloy scope.
Similarly, ASTM B130 is not a general C27400 brass sheet or strip standard.
Customers should identify the precise product standard and edition required for their projects.
Industrial Applications of C27400 Brass
Precision Metal Stamping
C27400 strip can be considered for stamped metal components requiring controlled thickness, consistent temper and repeatable forming performance.
Typical applications include brackets, clips, decorative fittings and general industrial stampings.
Deep-Drawn Components
Soft brass may be formed into cups, shells, housings and other drawn shapes.
The suitability of C27400 depends on drawing severity and the final material condition.
Automotive Components
Potential applications include decorative trim, hardware and selected formed components.
Material selection must consider component geometry, mechanical loading and environmental exposure.
Electrical and Electronic Hardware
C27400 may be used in certain stamped electrical hardware where its conductivity and mechanical properties meet the design requirements.
For highly conductive or spring-critical components, other copper alloys may be more appropriate.
Decorative and Architectural Hardware
The yellow metallic appearance of C27400 makes it useful for decorative fittings, handles, trim and fabricated hardware.
Polishing and protective finishes can be specified to achieve the required appearance.
Plumbing Accessories
Selected fittings and formed plumbing accessories may use C27400 where service conditions and relevant regulations permit.
Drinking-water applications require separate assessment of alloy chemistry and product certification.
HVAC and Thermal Components
C27400 may be evaluated for selected formed fins, housings and thermal components.
For components directly exposed to cooling water or aggressive fluids, corrosion resistance must be reviewed before material approval.
Inspection & Quality Assurance
Industrial buyers require consistent material quality, especially when brass products are supplied for automated stamping and precision manufacturing.
Xi'an Dongmeng Group Co., Ltd. supports inspection planning according to the agreed product specification, customer drawings and purchase requirements.
Chemical Composition Verification
Chemical analysis can be arranged to verify alloy identity and conformity to the agreed composition limits.
Mechanical Testing
Depending on the order specification, testing may include:
Tensile strength
Yield strength
Elongation
Hardness
Grain size
Dimensional Inspection
Inspection may cover:
Thickness
Width
Length
Flatness
Camber
Coil dimensions
Edge condition
Burr height
Surface Inspection
Surface inspection focuses on defects that may affect forming, appearance or downstream finishing.
These may include scratches, dents, staining, oxidation and rolling marks.
Batch Traceability
Where agreed, supplied products can be identified by heat, lot or coil information to support traceability.
Inspection Documents
Documentation may include:
Chemical analysis report
Mechanical test report
Dimensional inspection report
Material test certificate
EN 10204 Type 3.1 inspection certificate, where contractually available
Third-party inspection report, when specifically arranged
SGS, BV or other independent inspection services may be requested according to project requirements.
The inspection scope and documentation should be confirmed before production and shipment.
Product Delivery Standards
Export Packaging
C27400 brass sheets, strips and coils should be protected against mechanical damage, moisture and surface contamination during transportation.
Packaging options may include moisture-resistant wrapping, protective films, edge protection and reinforced pallets.
Coil Packaging
For coil products, packaging requirements should consider:
Coil orientation
Inner diameter protection
Edge protection
Moisture barriers
Maximum package weight
Safe lifting and handling
Sheet Packaging
Flat products may be packed with interleaving protection and reinforced support to reduce scratching and deformation.
Product Identification
Material labels should identify the relevant purchasing information, such as:
Alloy designation
Product dimensions
Temper
Batch or coil number
Net weight
Purchase order reference
Export Documents
Depending on the destination and commercial terms, documents may include commercial invoice, packing list, bill of lading, certificate of origin and agreed inspection records.
Lead Time and MOQ
Production lead time, minimum order quantity and shipment schedule depend on material availability, dimensions, temper, processing requirements and order quantity.
Customers should request a confirmed quotation for the specific product configuration.
Why Choose Xi'an Dongmeng Group Co., Ltd.?
Industrial Material Selection Support
We assist international buyers in comparing brass grades, material conditions and product forms according to their manufacturing requirements.
Customized Product Specifications
Customers can submit drawings or technical specifications for thickness, width, length, temper, finishing and processing requirements.
Procurement-Oriented Quality Planning
Inspection requirements can be discussed before order confirmation to align material quality with the intended manufacturing application.
Export Packaging Coordination
We support packaging and shipment arrangements for brass coils, strips, sheets and other semi-finished products.
B2B Supply Support
Our services are designed for industrial distributors, OEM manufacturers, fabrication companies and international project procurement teams.
How to Order C27400 Brass
To obtain an accurate quotation, please provide the following information.
| Purchasing Item | Required Information |
|---|---|
| Material Grade | UNS C27400 or CW508L |
| Governing Standard | ASTM / EN / Customer Specification |
| Product Form | Sheet / Strip / Coil / Rod / Wire / Tube |
| Thickness | mm or inches |
| Width | mm or inches |
| Length | For sheet or cut lengths |
| Temper | Annealed / H02 / H03 / H04 / Other |
| Surface Finish | Mill Finish / Bright / Polished |
| Edge Requirement | Mill Edge / Slit Edge / Deburred |
| Coil Dimensions | ID / OD / Maximum Weight |
| Quantity | kg / Tons / Pieces |
| Inspection | Chemical / Mechanical / Dimensional |
| Documentation | MTC / Inspection Report / Third-Party Inspection |
| Delivery Destination | Country / Port / Delivery Terms |
For deep-drawing or precision stamping applications, customers are encouraged to provide component drawings or forming requirements.
This allows the material condition and inspection requirements to be evaluated before quotation.
Frequently Asked Questions About C27400 Brass
Q1. What is C27400 brass?
C27400 is a wrought copper-zinc alloy commonly known as 63/37 yellow brass. It contains approximately 63% copper and is used in cold forming, hardware manufacturing and industrial fabrication.
Q2. What is the chemical composition of C27400?
The UNS composition specifies 61.0–64.0% copper, with zinc as the remainder, lead not exceeding 0.09% and iron not exceeding 0.05%.
Q3. Is C27400 equivalent to CuZn37 or CW508L?
C27400 is commonly cross-referenced with CuZn37/CW508L. However, their chemical composition limits are not identical, so equivalence must be checked against the applicable standards.
Q4. Is C27400 suitable for deep drawing?
C27400 offers good cold formability, particularly in suitable annealed conditions. However, for severe deep drawing, C26000 may provide better ductility. Material testing is recommended.
Q5. What is the difference between C27400 and C26000?
C26000 contains approximately 70% copper, while C27400 contains approximately 63% copper. C26000 is particularly well known for excellent deep-drawing performance.
Q6. What tempers are available for C27400 brass?
Common temper categories include annealed and cold-worked conditions such as H02, H03 and H04. The required hardness and mechanical properties should be specified during ordering.
Q7. Can C27400 brass be used for precision stamping?
Yes. C27400 strip may be used in stamping applications where its mechanical properties and forming characteristics meet the component requirements.
Q8. Is C27400 brass corrosion resistant?
C27400 provides useful resistance in many general environments, but it may be susceptible to dezincification and stress corrosion cracking under certain conditions.
Q9. Can C27400 brass be used in seawater?
C27400 should not be selected for continuous seawater exposure without a specific corrosion assessment. Other copper alloys are generally preferred for demanding marine environments.
Q10. Can C27400 brass be soldered or brazed?
Yes. Soldering and brazing are generally suitable joining methods when the correct surface preparation, filler materials and processing procedures are used.
Q11. What inspection documents can be supplied?
Chemical analysis, mechanical testing, dimensional inspection and material certification can be arranged according to the agreed purchase requirements.
Q12. Can I order customized C27400 brass strip or coil?
Customized dimensions, temper, surface requirements, slitting and coil configuration can be discussed. Availability depends on the manufacturing route and order specifications.
Contact Us – Request a C27400 Brass Quotation
Looking for a reliable C27400 brass sheet, strip or coil supplier for your next manufacturing project?
Xi'an Dongmeng Group Co., Ltd. provides industrial brass procurement support for global manufacturers, distributors and OEM companies.
Contact us to discuss:
C27400 brass material specifications
CuZn37/CW508L grade comparison
Customized sheet, strip and coil dimensions
Temper and mechanical property requirements
Precision slitting and surface finishing
Material inspection and certification
Export packaging and delivery arrangements
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: +86 157 6921 4734
WhatsApp: +86 157 6921 4734
Email: office@dongmjd.com
Send us your specifications, technical drawings or purchasing requirements to request a quotation.
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