Standard Grade: C76400 (Cu-Ni-Zn Alloy, Nickel Silver/German Silver)
International Equivalents:
UNS: C76400 (ASTM B151/B206)
EN: CW409J (DIN 17663), CuNi18Zn20
JIS: C7521
Applicable Standards:
ASTM B151M, B206M
EN 12163 (Europe)
GB/T 5231-2012 (China)
Product Features of C76400 Small diameter copper tubes
1. High Strength & Wear Resistance: Tensile strength up to 640-730 MPa (hard state), suitable for high-load applications.
2. Superior Corrosion Resistance: Resists seawater, weak acids, and high-temperature oxidation (corrosion rate ≤0.003 mm/a), anti-biofouling.
3. Excellent Machinability: Supports cold/hot working, welding (TIG/laser), and stamping; surface finish up to Ra 0.1μm.
4. Aesthetic & Functional: Silver-white appearance for decorative and industrial use.
Common Product Forms & Dimensions of C76400 little diameter copper tube
|
Product Form |
Size Range |
Delivery Condition |
|
Sheet |
Thickness: 0.05-1.5mm, Width ≤500mm |
Soft (M), Hard (H) |
|
Rod |
Diameter: 3-120mm, Length: 2-6m |
Drawn, Hot-Rolled |
|
Tube |
OD: 2-150mm, Wall Thickness: 0.3-15mm |
Cold-Drawn, Half-Hard |
|
Wire |
Diameter: 0.05-6.0mm |
Coiled or Straight |
|
Strip |
Thickness: 0.1-3.0mm |
Custom Cut |
Chemical Composition of C76400 Pancake Capillary Copper Pipe
|
Element |
Content (%) |
Function/Limit |
|
Cu+Ag |
58.5-61.5 |
Base material, corrosion resistance & conductivity |
|
Ni+Co |
16.5-19.5 |
Enhances corrosion resistance & strength |
|
Zn |
Balance |
Adjusts plasticity, reduces cost |
|
Fe |
≤0.25 |
Trace impurities |
|
Pb |
≤0.05 |
Strictly controlled |
|
Mn |
≤0.50 |
Improves machinability |
Physical Properties of C76400 Copper Capillary Tube
|
Property |
Value |
Remarks |
|
Density |
8.72 g/cm³ |
High density for precision parts |
|
Electrical Conductivity |
5.7-6% IACS |
Moderate conductivity for industrial use |
|
Thermal Conductivity |
19-33 W/(m·K) |
Moderate heat dissipation |
|
Thermal Expansion |
17.2×10⁻⁶/°C (20-300°C) |
Excellent thermal stability |
|
Elastic Modulus |
125 GPa |
Material rigidity indicator |
Mechanical Properties of C76400 micro copper
|
Property |
Soft (M) |
Hard (H) |
|
Tensile Strength (σb) |
380-450 MPa |
640-730 MPa |
|
Yield Strength (σ0.2) |
105-250 MPa |
≥600 MPa |
|
Elongation (δ10) |
20-40% |
3-9% |
|
Vickers Hardness (HV) |
80-130 |
200-230 |
Core Advantages of C76400 Type L Copper Tubing
1. Industry-Leading Corrosion Resistance: Resists stress corrosion cracking and high-temperature oxidation for marine/chemical environments.
2. Balanced Performance: Combines strength, wear resistance, and machinability for complex applications.
3. Cost-Efficiency: Lower cost than high-nickel alloys (e.g., C71500) with comparable performance.
Product Applications of C76400 type l copper
1. Marine Engineering: Ship propellers, seawater valves, offshore platform components.
2. Chemical Equipment: Corrosion-resistant pipes, pump bodies, reactor linings.
3. Mechanical Engineering: Gears, bearings, high-load connectors.
4. Electronics & Decoration: Precision instrument housings, eyewear frames, decorative items.
Processing Guidelines of C76400 Type K Copper Pipe
1. Welding: Prefer TIG or laser welding; interpass temperature ≤100°C to avoid zinc evaporation.
2. Annealing: Post-cold working, anneal at 650-750°C to relieve stress.
3. Machining: Cutting speed ≤50 m/min; use carbide tools with oil-based coolant.
Key Application Scenarios of C76400 Type M Copper Pip
High-Temperature & High-Pressure Systems: Petrochemical valves, nuclear reactor seals.
Precision Machinery: Aerospace components, medical device wear parts.
FAQs
1. Q: How does C76400 differ from brass?
A: C76400 offers superior corrosion resistance and strength but at a higher cost.
2. Q: Is it suitable for strong acid environments?
A: Suitable for weak acids and seawater but avoid strong oxidizing acids (e.g., nitric acid).
3. Q: Post-weld heat treatment required?
A: Recommend low-temperature annealing (250-300°C) to eliminate residual stress.
Types of products GNEE can provide
|
Product name |
Copper/brass/bronze pipe |
|
Material |
Copper,Pure Copper,Red Copper,Brass,Phosphor Bronze,Nickel-Copper |
|
Grade |
Copper:C11000 C10200 C1100 C1220 T2 CU-OF CU-SF |
|
Size |
Outside diameter 2-800mm; |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard |
|
Surface |
Polished,bright,oiled,hair line,brush,mirror,or as required |
|
Apllication |
Construction, industrial, decoration |
|
Service |
Custom service |
|
Price terms |
CFR,FOB,CIF,Ex-work,CNF |
|
Classification of copper materials |
copper wire, copper rod, copper strip, copper plate, copper tube, copper, bronze, phosphor bronze, materials include: H96 (C2100), |
|
Products name |
Copper/Brass/Bronze alloy Bar |
|
|
Material |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930, C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200, C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000, C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800, C63000,C65500,C68700,C70400,C70600,C70620,C71000,C71500,C71520,C71640, C72200,C86300,C83600,C95400,C95500,C95800, H59,62,H65,H68,H70,H80,H85,H90,H96, T1,T2,T3,TU1,TU0,TU2,TP1,TP2,TAg0.1,etc |
|
|
Size |
Thickness |
2mm-200mm or customized |
|
Width |
10mm-600mm or customized |
|
|
Length |
200mm-6000mm or customized |
|
|
Surface |
Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
|
|
Application |
With high conductivity,copper flat bar can be widely used in: |
|
|
standard |
GB/T4423-2007,
JISH3250-2006, JISH3300-2006, |
|
|
Package |
Standard export package |
|
|
Description
|
copper plate/copper sheet
|
|
|
Other
Standards |
ASTM A276, A484, A479, A580, A582, JIS G4303, JIS G4311,
DIN 1654-5,DIN 17440,GB/T 1220 |
|
|
Material
|
Copper (C10200,C11000,C10100,C10200,C12000,)C11600,
Brass(C21000,C22000,C23000,C24000,C26000,C27000,C27200,C27400,C2800, C31400,C33000,C35600,C37100,C36000,C35300,C37100,C37700,C37710,C37000, C68700,C41100,C44300,C46200.C46400,C26130,C65600,) Bronze(C50500,C51100,C52100,C60800,C61000,C61900,C63010,C62300, C63000,C63280,C63020,C17200,C17000,C17500,C17510,C18200,C18100,C18200, C16200,C19400,C14500) Cupronickel(C70400,C71000,C71300,C71500,C70400,C70600,C75200,C77000, C75400,C79000,C79200) |
|
|
Specifications
|
thickness:0.1~20mm,width:1~2500mm
|
|
|
Price Term
|
EX-Work, FOB, CFR, CIF
|
|
|
Payment Term
|
T/T, L/C, Western Union
|
|
|
Delivery Time
|
According to customer' s quantity
|
|
|
Main Market
|
Europe,South America, Africa ,Oceania ,such as :
USA,Germany,India,.,Dubai,Iraq,Vietnam,Ireland,Singapore,etc |
|
|
Product name |
Copper Wire |
|
Grade |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70620,C71000,C71500,C71520,C71640,C72200,T1,T2,T3,etc |
|
Standard |
JIS ASTM DIN EN ISO |
|
Diameter |
0.3-5mm/custom |
|
Length |
custom |
|
Surface |
mill,polished,bright,mirror,hair line,brush,checkered,antique,sand blast,etc |
|
Application |
Building, industry etc |
|
Payment Terms |
T/T or L/C at sight |
|
Delivery time |
5-15 days after receiving L/C or deposit |
|
Remark |
Specific requirement of alloy grade,temper or specification can be discussed at your request |
Copper CNC machined parts
|
Service Offer |
Cnc Machining/Turning/Milling, Sheet Metal Fabrication, Laser Cutting, Stamping, Bending, Spinning, Wire Cutting, Die Casting, Forging, Gear machining, etc. |
|
Materials |
Aluminum, Stainless Steel, Steel, Brass / Bronze / Copper, Titanium Alloy, Plastic, etc. |
|
Application Areas |
Auto parts, Automated Robots, Drones, Medical Equipment, Mechanical Hardware, Aerospace Military Industry, Electronic Equipment, Lighting Fixtures, 3C Digital Products, Household Appliances |
|
Tolerance |
+/-0.01 mm, Strict tolerance can reach +/-0.005 mm |
|
Processing Capabilities |
10000pcs/day |
|
Drawing Format |
STP, Solid Works, Pro/Engineer, Auto CAD(DXF,DWG), PDF, TIF etc. |
|
Surface treatment |
Anodizing, Hard anodizing, Gradual anodizing, Electro-plating, Electroless nickel, PVD, Painting, Powder coating, Teflon coating, Ceramic plating, Sandblasting, Brush, Mirror polish, etc. |
|
Testing equipment |
Three-coordinate measuring machine, 2.5 Dimension measuring instrument, inside micrometer, outside micrometer, electronic height gauge,Thread go and no-go gauges, external thread ring gauges, electronic calipers, pin gauges |
|
Project delivery |
1-10 days |
|
Product Packaging |
Inner packaging: foam, plastic, paper;
Outer packing: hard thick carton, customized wooden box |
|
Payment Methods |
T/T, L/C, Trade Assurance |
in exporting copper products
With 18 years of experience, we are a leading exporter of high-quality copper products. Our efficient production lines, featuring continuous casting rods, precision drawing, and automated annealing processes, ensure consistent quality. Combined with rigorous in-house testing, including spectral analysis and pressure tests, we guarantee that every copper tube, coil, and rod meets the highest international standards for global clients.
