Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of C21000 Copper Alloy Supplier | Gilding Metal Sheet, Strip, Coil & Plate Manufacturer 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.
C21000 Brass, also known as Gilding Metal 95/5, is a high-copper alloy widely used in precision stamping, deep-drawing parts, electrical components, decorative hardware, and industrial applications requiring excellent formability and corrosion resistance. As a trusted global supplier, we provide C21000 sheets, strips, coils, plates, rods, wires, and custom-fabricated parts for OEM manufacturers, distributors, and metal fabrication industries worldwide.
Our C21000 products comply with ASTM B36 / ASTM B134 / EN, JIS, DIN and are available in a full range of tempers and custom dimensions.
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High Quality
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Advanced Equipment
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C21000 Copper Alloy Overview
C21000 copper alloy, also known as Gilding Metal, is a high-copper brass alloy containing approximately 95% copper and 5% zinc. Due to its outstanding ductility, excellent cold working performance, and smooth surface quality, C21000 is widely used in precision deep drawing, industrial stamping, electrical components, decorative hardware, and ammunition manufacturing industries.
Compared with standard brass materials, C21000 gilding metal alloy offers superior formability and crack resistance during multi-stage forming operations. This makes it an ideal choice for manufacturers requiring stable production quality, excellent surface appearance, and reliable dimensional consistency.
At Xi'an Dongmeng Group Co., Ltd, we supply high-quality C21000 copper sheets, strips, coils, and plates with strict chemical composition control and industrial-grade inspection standards suitable for global OEM projects and B2B industrial procurement.
Why C21000 Gilding Metal Is Preferred in Industrial Manufacturing
Excellent Deep Drawing Performance
C21000 copper alloy demonstrates exceptional elongation and cold forming capability, making it highly suitable for:
Deep drawn shells
Precision stamped components
Industrial cups
Connector housings
Decorative metal parts
Superior Surface Finish
The high copper content provides:
Bright metallic appearance
Smooth surface texture
Enhanced polishing capability
Attractive decorative finish
Stable Mechanical Properties
The alloy maintains reliable mechanical strength while preserving excellent ductility for continuous industrial processing.
Excellent Corrosion Resistance
C21000 performs well in indoor industrial environments and moderate atmospheric conditions, offering long-term durability and stable service life.
Products Description
| Item | Details |
|---|---|
| Product Name | C21000 Copper Alloy / Gilding Metal 95-5 |
| Standards | ASTM B36, ASTM B134, EN, JIS, DIN |
| Forms Available | Sheet, Plate, Strip, Coil, Foil, Rod, Bar, Wire, Tube |
| Temper Options | O, 1/4H, 1/2H, H, EH, SH |
| Typical Hardness | 45–110 HV (depending on temper) |
| Key Properties | High ductility, excellent formability, good electrical & thermal conductivity, attractive color |
Chemical Composition (Typical Values)
| Element | Content (%) |
|---|---|
| Copper (Cu) | 94.0–96.0 |
| Zinc (Zn) | 4.0–6.0 |
| Lead (Pb) | ≤ 0.05 |
| Iron (Fe) | ≤ 0.05 |
| Others | ≤ 0.30 |
Mechanical Properties
| Property | Annealed (O) | 1/2 Hard (H02) | Hard (H04) |
|---|---|---|---|
| Tensile Strength (MPa) | 275–340 | 365–480 | 455–550 |
| Yield Strength (MPa) | 80–120 | 150–280 | 250–360 |
| Elongation (%) | 40–50 | 10–25 | 3–10 |
| Electrical Conductivity (% IACS) | 28–30 | - | - |
| Thermal Conductivity (W/m·K) | ~ 250 | - | - |
Physical Properties of C21000 Copper Alloy
| Property | Value |
|---|---|
| Density | 8.89 g/cm³ |
| Electrical Conductivity | Approx. 28% IACS |
| Thermal Conductivity | 230 W/m·K |
| Melting Range | 1060 – 1080°C |
| Modulus of Elasticity | 110 GPa |
Machinability & Processing Analysis
Cold Forming Performance
One of the biggest advantages of C21000 copper alloy sheet and strip is its outstanding cold forming behavior. The material can withstand multiple drawing and forming stages without cracking.
Typical processing operations include:
Deep drawing
Precision stamping
Roll forming
Bending
Embossing
Spinning
CNC Machining Capability
Although primarily used for forming applications, C21000 can also be processed into custom CNC components requiring:
Smooth surface finish
Decorative appearance
Medium-strength copper alloy structure
Surface Treatment Compatibility
The alloy supports various surface finishing processes:
Polishing
Electroplating
Brushing
Mirror finishing
Passivation
Welding Performance Analysis
C21000 copper alloy offers acceptable welding characteristics under controlled industrial conditions.
Recommended welding methods include:
TIG Welding
Resistance Welding
Brazing
Soldering
For precision decorative or electrical applications, brazing and soldering are generally preferred to maintain surface integrity and minimize thermal distortion.
Corrosion Resistance Analysis
Due to its high copper content, C21000 gilding metal provides strong resistance to:
Atmospheric corrosion
Mild industrial environments
Indoor humidity exposure
Surface oxidation
Compared with lower copper brass grades, C21000 demonstrates improved anti-tarnish properties and long-term decorative stability.
Standard Sizes & Dimensions (Metric + Imperial)
Sheets / Plates / Strips / Coils
| Specification | Metric | Imperial |
|---|---|---|
| Thickness | 0.05–12 mm | 0.002"–0.472" |
| Width | 10–1500 mm | 0.39"–59" |
| Length (Sheets) | 100–6000 mm | 4"–236" |
| Coil ID/OD | Customized | Customized |
| Tolerances | ASTM / EN ISO Standard | ASTM / EN ISO Standard |
C21000 Tubes (Seamless / Welded)
| Specification | Metric | Imperial |
|---|---|---|
| Outer Diameter (OD) | 3–150 mm | 0.118"–6" |
| Wall Thickness | 0.3–10 mm | 0.012"–0.394" |
| Length | Up to 12 m | Up to 40 ft |
| Dimensional Standard | ASTM B135 / B251 | ASTM B135 / B251 |
Features & Benefits
✔ Excellent Deep-Drawing Performance
Ideal for complex cold-formed and stamped components.
✔ Superior Corrosion Resistance
Performs well in atmospheric, freshwater, and mild industrial environments.
✔ High Electrical & Thermal Conductivity
Suitable for conductive components and electrical uses.
✔ Smooth Surface & Attractive Color
Commonly used in decorative and architectural applications.
✔ Wide Range of Tempers
Soft to spring-hard-adaptable to various manufacturing needs.
Applications of C21000 Copper Alloy
Industrial & Mechanical
Deep-drawn components
Precision hardware
Mechanical bushings & connectors
Electrical & Electronics
Electrical terminals
Conductive connectors
Switch components
Decorative & Architectural
Medal stamping
Artistic ornaments
Decorative panels & trim
Automotive & Transportation
Radiator components
Automotive electrical parts
Ammunition Manufacturing
Gilding metal for bullet jackets
International Material Designations (SEO Keywords)
| System | Designation |
|---|---|
| UNS | C21000 |
| ASTM | Copper Alloy 210 |
| EN / WNr. | CW501L |
| JIS | C2100 |
| Chinese GB | H96 |
| Common Names | Gilding Metal 95-5, 95/5 Brass, High Copper Brass |
International Standards
Our C21000 copper alloy materials comply with international industrial standards including:
ASTM B36
ASTM B152
ASTM B194
EN Standards
JIS Standards
RoHS Compliance
SGS Inspection Standards
Professional FAQ (for B2B Buyers)
Q1: What is the key difference between C21000 and C22000?
C21000 contains higher copper (~95%) and offers better formability, while C22000 (Commercial Bronze) has slightly higher zinc for increased strength.
Q2: Can C21000 be used for deep drawing or cold forming?
Yes, C21000 is one of the best deep-drawing copper alloys, especially in annealed temper O.
Q3: Do you offer slit coils and micro-precision strips?
Yes, we provide precision slitting from 3 mm width with tight tolerances.
Q4: What surface finishes are available?
Mill finish
Polished
Brushed
Bright finish
Coil-coated (upon request)
Q5: Can you supply SGS / TUV / BV inspection and mill certificates?
Yes, full documentation is available: EN10204 3.1, SGS, TUV, BV, RoHS, REACH, and custom reports.
Inspection & Quality Assurance
Raw Material Control: Certified copper cathode and high-purity zinc.
Process Inspection: Thickness, width, hardness, straightness, surface quality.
Mechanical Testing: Tensile, yield, elongation, conductivity.
Chemical Analysis: Spectrometer testing for every batch.
Third-Party Services: SGS / TUV / BV inspection available before shipment.
Packaging: Export seaworthy wooden pallets, moisture protection, coil straps.
Why Choose Xi'an Dongmeng Group Co., Ltd
Factory-Direct Copper Alloy Manufacturer
We specialize in industrial copper and brass alloy manufacturing with extensive export experience.
OEM & Custom Processing Support
Custom dimensions, hardness, surface finishing, and CNC machining services are available according to project requirements.
Stable Global Supply Chain
We support long-term supply cooperation for:
Industrial distributors
OEM manufacturers
Engineering contractors
Alibaba wholesale buyers
International importers
Professional Technical Support
Our engineering team provides:
Material selection guidance
Processing recommendations
Export documentation support
Application consulting
Looking for a reliable supplier of C21000 Brass (Gilding Metal)?
We support OEM fabrication, small MOQ orders, fast delivery, and global shipping.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
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