Copper Type K L M Pipe Size PDF
Products Description
C70600 copper-nickel tubes, composed of 90% copper and 10% nickel, are engineered for exceptional corrosion and biofouling resistance in harsh marine and industrial environments. This alloy offers superior resistance to impingement attack, stress corrosion cracking, and seawater-induced erosion, making it a trusted choice for high-velocity cooling systems.
Thanks to their durability and anti-fouling properties, CuNi 90/10 tubes are widely used in marine condensers, heat exchangers, and desalination plants, where they outperform other copper alloys under demanding thermal and chemical conditions.
The main chemical components of C70600 include
· Copper (Cu): 65-70%
· Nickel (Ni): 9-11%
· Tin (Sn): Maximum 0.50%
· Zinc (Zn): Maximum 1.00%
· Lead (Pb): Maximum 0.05%
· Iron (Fe): 1%-1.8%
· Manganese (Mn): Maximum 1.00%
Heat Treatment Properties of C70600 Copper-Nickel Alloy
The heat treatment properties of C70600 copper-nickel alloy directly affect its final mechanical properties and corrosion resistance. A proper heat treatment process can effectively optimize its microstructure and improve the alloy's strength and corrosion resistance.
Solution Treatment: Solution treatment is one of the commonly used heat treatment methods for C70600 alloy. It is typically performed at a temperature of 900°C to 950°C, followed by rapid cooling with water or air. This process ensures a uniform distribution of metallic elements in the alloy, improving its overall mechanical properties. After solution treatment, the tensile strength of C70600 alloy can increase to approximately 600 MPa, and the yield strength reaches 280 MPa, exhibiting strong tensile and compressive strength.
Aging Treatment: Aging treatment is another commonly used heat treatment process. It is typically performed at a temperature range of 400°C to 500°C for 4 to 8 hours. During this process, the strength and hardness of the C70600 alloy are further improved. After aging treatment, the alloy can reach a hardness of 150 HV, exhibiting high wear resistance and corrosion resistance, making it particularly suitable for use in highly corrosive environments.
Annealing treatment: Annealing is mainly used to improve the plasticity and toughness of the alloy and reduce its internal stress. The annealing temperature is generally controlled between 600°C and 700°C. After treatment, the alloy's ductility is greatly improved, making it suitable for manufacturing parts requiring deep machining.
Applications
C70600 copper-nickel tubes are commonly used in:
Heat exchangers, condensers, and cooling systems in marine and offshore environments
Desalination equipment for seawater treatment and brine circulation
Chemical and industrial piping systems exposed to aggressive media
Power generation and shipboard thermal systems
Ballast water systems and ship hull coolers
Oil & gas platforms and refineries operating near coastal areas
FAQ
Q: What is c70600 copper tube?
A: C70600 is a copper-nickel alloy containing approximately 10% nickel, known for its excellent corrosion resistance, especially in marine environments.
What are the key properties of c70600?
A: Key properties include superior seawater corrosion resistance, biofouling resistance, high strength, and excellent erosion-corrosion resistance.
Q: Where is c70600 copper tube commonly used?
A: It's widely used in marine engineering, shipbuilding, desalination plants, power plant condensers, and offshore oil and gas platforms.
Q: How does c70600 resist seawater corrosion?
A: It forms a stable, protective oxide film on its surface that prevents further corrosion in seawater.
About us
GNEE is a leading international trader and supplier specializing in a comprehensive range of high-quality copper and copper alloy products. We serve a global clientele across various industries, including HVAC/R, automotive, electronics, construction, and industrial manufacturing.
Our Extensive Product Portfolio
We boast a vast inventory and robust supply chain for virtually all forms of copper products. Our expertise covers:
Copper Seamless Tube / Capillary Copper Tube
Copper Welded Tube / Copper Air Conditioning Tube
Copper Refrigeration Tube / Copper Water Tube
Deoxidized Copper Tube / Copper Coil Tube
Copper Sheets & Plates&Strips：
Copper Strip / Copper Thin Strip
Copper Heavy Duty Strip / Precision Copper Strip
Copper Foil Sheet / Copper Thin Sheet
Copper Thick Plate / Copper Chequered Plate
Copper Shim Stock / Copper Busbar
Copper Round Bar / Copper Square Bar
Copper Hexagon Bar / Copper Flat Bar
Copper Alloy Rod / C11000 Electrolytic Tough Pitch (ETP) Copper Rod
Copper Wire / Bare Copper Wire
Copper Alloy Wire / Oxygen-Free Copper Wire
Copper Profiles / Copper Fittings
Material Grades & International Standards
We provide materials that conform to major international standards to ensure performance, reliability, and global acceptance. Commonly supplied grades and standards include:
Common Grades:
Pure Copper: C10100 (Oxygen-Free Electronic Copper), C10200 (Oxygen-Free Copper), C11000 (Electrolytic Tough Pitch - ETP Copper)
Copper Alloys:
Brass: C26000 (Cartridge Brass), C27200 (Brass), C36000 (Free-Cutting Brass), C38500 (Architectural Bronze)
Phosphor Bronze: C51000
Aluminum Bronze: C60800
Copper-Nickel: C70600 (CuNi 90/10)
Admiralty Brass: C44300
ASTM Standards:
B68 / B68M: Seamless Copper Tube
B75 / B75M: Seamless Copper Pipe
B111 / B111M: Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock
B152 / B152M: Copper Sheet, Strip, Plate, and Rolled Bar
B187 / B187M: Copper Bus Bar, Rod, and Shapes
B301: Free-Cutting Brass Rod
