Size range
Chinese standard (GB/T 2040-2017):
Thickness: 0.2-10 mm
Width: ≤3000 mm
Length: ≤6000 mm.
Common specifications in the international market:
Thickness: 0.1-200 mm (customization supported)
Width: 100-2500 mm
Length: 1000-3000 mm.
International standards and grades
The corresponding grades of C26800 in the world's major standard systems include:
USA: UNS C26800 (ASTM B36, SAE J461).
Europe: EN CW506L (formerly CuZn33), BS CZ107.
Japan: JIS C2680.
China: GB H66.
Others: German DIN standard, ISO standard, etc.
Main application areas
Industry: heat exchangers, condensers, springs, hardware, radiator housings.
Architecture and decoration: lamps, door handles, art sculptures.
Ships and electricity: corrosion-resistant parts, conductive components.
Processing characteristics: excellent cold processing performance, suitable for stamping, bending, welding, but poor hot processing ability.
Chemical composition (mass percentage):
Copper (Cu): 64.0%~68.5%
Zinc (Zn): Balance (about 31%~36%)
Lead (Pb): ≤0.15% (some standards such as ASTM stipulate ≤0.09%)
Iron (Fe): ≤0.05%
Other elements: such as boron (B) ≤0.01%, bismuth (Bi) ≤0.002%, etc., total impurity ≤0.45%
Mechanical properties vary significantly with processing conditions (such as annealing, cold working), and common conditions include H00 (soft state) to H10 (full hard state). Take the typical state as an example:
Annealed state (OS035):
Tensile strength: 345 MPa (50 ksi)
Elongation: 60%
Shear strength: 234 MPa (34 ksi)
Semi-hard state (H02):
Tensile strength: 607 MPa (88 ksi)
Elongation: 15%
Full hard state (H04):
Tensile strength: 758 MPa (110 ksi) or 510 MPa (74 ksi) (different test standards or data sources)
Elongation: 8%
Yield strength: 420 MPa (60 ksi)
Brinell hardness: 80 HB
Other conditions (H08):
Tensile strength: 883 MPa (128 ksi)
Elongation: 3%
Physical properties:
Melting point: liquidus 930°C (1710°F), solidus 904°C (1660°F)
Density: 8.1~8.47 g/cm³
Electrical conductivity: 27% IACS (International Annealed Copper Standard)
Thermal conductivity: 116~120 W/m·K
Coefficient of thermal expansion: 20~20.3 µm/m·°C (70~572°F)
Application and processing characteristics:
Corrosion resistance: good, but avoid contact with ammonia, mercury or acidic media to prevent stress corrosion or dezincification.
Processing performance:
Excellent cold working ability, suitable for stamping, drawing and other processes.
Poor hot forming ability, recommended annealing temperature 540~600°C (annealed state) or 800~1300°F (stress relief after cold working).
C26800 copper plate production process and product advantages:
1. Production process
Processing process
C26800 brass can be produced by a variety of hot and cold processing methods, including hot rolling, cold rolling, cold drawing, cold drawing, forging, etc.
The cold rolling process of copper strip production is further demonstrated, involving steps such as coiling, stretching, and slitting, reflecting the continuous processing capabilities of modern industry.
Annealing treatment: The annealing temperature range is 800-1300 degrees Fahrenheit (about 427-704℃) to optimize material properties.
Surface treatment
Some production processes include steps such as washing, degreasing, painting, and drying (such as
The general copper plate process), but C26800 pays more attention to the surface finish after cold forming, which is suitable for precision processing.
3. Quality control
Manufacturing companies usually conduct strict quality inspections before shipment, such as Tianjin COSCO Tiancheng Company's inspection of size, composition, and mechanical properties.
2. Product Advantages
Excellent mechanical properties
High strength and toughness: C26800 has high tensile strength (200-300MPa) and elongation (30%-50%), while maintaining a certain toughness, suitable for cold stamping and deep drawing parts.
High hardness: The hardness can be adjusted through different processing states (such as H00-H10) to meet the needs of full hardness, semi-hardness, etc.
2. Excellent corrosion resistance
Dezincification and stress corrosion resistance: Stable in corrosive environments, especially suitable for radiators, ships and other scenes with long-term contact with water or chemical media.
Excellent processing performance
Cold forming ability: Cold processing rating is excellent, suitable for complex stamping, bending and other processes.
Welding performance: Supports electroplating, brazing, oxyacetylene welding, etc., but the effect of gas shielded arc welding is general, and the process needs to be selected according to the application.
Electrical and thermal conductivity
Good electrical conductivity (conductivity is about 30% IACS), which is an ideal material for conductive parts such as electronic components and connectors.
5. Diversified applications
Widely used in radiator cores, auto parts, architectural decoration, electronic devices and other fields, and can be customized in size (thickness 0.1-200mm, width 100-2000mm).
Q1:Do you provide samples? Is it free or extra?
A1:Yes, we can provide samples free of charge and the customer will pay the freight.
Q2:What if I don't have export experience ?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
Q5:How is your technical support?
A5:We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.
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