|
Item |
Specification |
|
UNS Number |
C68800 |
|
Common Name |
Nickel-Aluminum Brass, High-Strength Brass |
|
Chinese Designation |
HAl77-2 (GB/T 5231) |
|
European Standard |
CuZn21Al4Ni (DIN 17660) |
|
Primary Standards |
ASTM B592, SAE J463, DIN 17672-1 |
Product Features of C68800 Seamless round copper tube
Exceptional Corrosion Resistance: Resists dezincification in seawater/chloride environments (salt spray >720 hrs with coating).
High Strength & Wear Resistance: Tensile strength ≥600 MPa (hard temper), hardness ≥260 HB.
Superior Workability: Hot working range 750–870°C; cold elongation ≥35%.
Spark-Resistant: Safe for explosive environments (ISO 80079 compliant).
Thermal Stability: Thermal conductivity 58.6–120 W/m·K; service temp ≤400°C.
Common Product Forms & Dimensions of C68800 Thin wall copper ERW Pipe
|
Form |
Thickness/Dia. (mm) |
Width/Length (mm) |
Special Specifications |
|
Bar |
Φ3–200 |
Cut-to-length: 0.5–6m |
Hex/Square/Forged rounds |
|
Plate |
0.5–500 |
Width: 200–2000 |
Max. single plate: 5 tons |
|
Strip |
0.08–2.5 |
Coil width: 10–600 |
Slitting tolerance ±0.1mm |
|
Tube |
Wall: 0.5–50 |
OD: 6–530 |
Seamless/Welded |
|
Wire |
Φ0.1–12.0 |
Coil |
Precision grade (±0.01mm) |
Chemical Composition of C68800 Cu Etp Erw Pipe
|
Element |
Standard Range (wt%) |
Typical (wt%) |
Impurities ≤ (wt%) |
|
Cu |
Balance |
64.0–67.0 |
– |
|
Zn |
21.3–24.1 |
Balance |
Sn 0.50 |
|
Al |
3.0–3.8 |
3.5 |
Ni 0.50 |
|
Co |
0.25–0.55 |
0.4 |
Si 0.25 |
|
Pb |
≤0.05 |
0.03 |
Fe 0.15 |
|
Total Impurities |
≤0.3 |
– |
– |
Physical Properties of C68800 Soldering Copper Pipe
|
Property |
Value Range |
Test Condition |
|
Density (g/cm³) |
7.4–8.5 |
20°C |
|
Melting Point (°C) |
900–1000 |
– |
|
Thermal Conductivity (W/m·K) |
58.6–120 |
20°C |
|
Electrical Conductivity (%IACS) |
24–29.5 |
Annealed |
|
Thermal Expansion (×10⁻⁶/K) |
17.6–20.7 |
20–300°C |
Mechanical Properties of C68800 Industrial Hollow Round Copper Tube
|
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness |
|
Annealed (O) |
294–360 |
110–140 |
35–45 |
70–90 HRB |
|
¼ Hard (H02) |
400–460 |
250–310 |
18–25 |
100–125 HV |
|
Hard (H04) |
≥490 |
≥390 |
≥5 |
≥150 HV |
|
Hot Rolled |
450–550 |
350–400 |
10–20 |
120–150 HV |
Core Advantages of C68800 Soft Copper Tube
1. Corrosion Resistance Leader: Dezincification rate <0.1 mm/year in seawater.
2. Multi-Process Compatibility: Hot forging yield >95%; cold forming LDR ≥2.0.
3. Intrinsic Safety: Spark-free properties certified to ISO 80079.
4. Cost Efficiency: 20–30% lower cost than stainless steel/bronze alternatives.
Product Applications of C68800 Annealed Copper Tube
Marine Engineering: Seawater valves, propeller shafts, condenser tubes.
Automotive: Fuel injector housings, sensor components (machining tolerance ±0.01mm).
Aerospace: Bearing bushings, hydraulic flanges (high-cycle fatigue resistance).
Electrical: Relay springs, deep-drawn contacts (conductivity ≥24% IACS).
Construction: Corrosion-resistant fasteners for coastal structures.
Processing Guidelines of C68800 Pancake Capillary Copper Coil
|
Process |
Key Parameters |
Risk Control |
|
Hot Working |
750–870°C (finish >550°C) |
Control O₂ at 0.5–1.5% to prevent Zn loss |
|
Welding |
TIG: 80–120A |
Argon purity ≥99.99% + preheat 150°C |
|
Annealing |
600–650°C (full)/300°C (stress relief) |
N₂ atmosphere anti-oxidation |
|
Surface Treatment |
Electroless Ni ≥15μm + Cr 0.3μm |
Mandatory for seawater exposure |
|
Machining |
Speed: 200–300 m/min |
K10 carbide tools + coolant |
Key Application Scenarios of C68800 Rolling Pancake Copper Tube
Ship Propulsion Systems: 100k DWT vessel seawater pump valves (Ni-Cr coated).
EV Thermal Management: Battery cooling seals (brazing compatible).
Aviation Hydraulics: Landing gear bushings (>500k impact cycles).
Chemical Processing: Acid-resistant agitators in pickling tanks.
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.
