
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).



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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