Chemical Composition and Core Properties
C72200 White Cup (40 White Cup) is a copper-nickel alloy with a strictly controlled chemical composition within the following range:
Copper (Cu): ≥79.3% (Cu + Ag ≥79.3% when silver is included). Serves as the base metal, providing electrical and thermal conductivity, as well as ductility.
Nickel (Ni): 15.0%–18.0% (including cobalt). Significantly improves corrosion resistance, strength, and oxidation resistance, imparting a silvery-white luster.
Iron (Fe): 0.50%–1.0%. Refines grain size, inhibits recrystallized grain growth, and improves mechanical and processing properties.
Manganese (Mn): ≤1.0%. Enhances corrosion resistance and thermal stability. Excessive amounts (>1%–2%) may cause brittleness.
Zinc (Zn): ≤1.0%. Adjusts strength and workability. Excessive amounts may reduce corrosion resistance. Lead (Pb): ≤0.05%. Trace additions can improve machinability, but must be controlled to avoid toxicity risks.
Chromium (Cr): 0.30%-0.70%. Further enhances corrosion resistance and high-temperature stability.
Physical Properties:
Density: Approximately 8.91 g/cm³, slightly higher than pure copper.
Melting Point: Higher than pure copper, stable within the industrial application temperature range.
Conductivity: Approximately 5% IACS (International Annealed Copper Standard), lower than pure copper but better than stainless steel, suitable for applications requiring moderate conductivity.
Mechanical Properties and Processability
Strength and Toughness:
Tensile Strength: 450-700 MPa (cold-drawn state can reach 890 N/mm²), yield strength approximately 250-400 MPa, significantly higher than ordinary copper.
Ductility: Elongation 15%-40% (cold-drawn state can reach 40%), allowing for complex processing such as bending, stretching, and deep drawing.
Impact Toughness: Excellent, preventing fracture and deformation, suitable for high-load environments.
Processing Performance:
Cold Working: Can be formed through processes such as cold rolling, cold drawing, and cold extrusion, achieving a high surface finish and controllable dimensional accuracy.
Hot Working: Hot rolling and forging are suitable for large or complex-shaped parts, requiring controlled heating temperatures to avoid overheating.
Weldability: Compatible with processes such as TIG and MIG welding, maintaining high strength and corrosion resistance after welding.
Corrosion Resistance
Seawater Environment: The nickel content imparts excellent seawater corrosion resistance, making it suitable for ships, offshore platforms, and seawater cooling systems.
Chemical Media: Resists corrosion from neutral salt spray, dilute sulfuric acid, and organic acids (such as formic acid and acetic acid), but is sensitive to ammonia and hydrogen sulfide.
Stress Corrosion: Inhibits chloride-induced stress corrosion cracking, extending service life.
Typical Applications
Marine Engineering:
Hull materials, underwater components, seawater valves, pumps, and piping systems.
Offshore platform structures and seawater cooling systems.
Chemical and Petroleum Industries:
Chemical reactors, storage tanks, heat exchangers, evaporators, and scrubbers.
Flame-retardant alloys for acid gas pipelines and high-pressure oxygen applications.
Electrical and Electronic Industries:
High-performance connectors, sockets, electrical contact components, conductive sheets, and brushes.
Precision instrument parts requiring both electrical conductivity and wear resistance.
Mechanical Manufacturing:
Highly corrosion-resistant gear shafts, bearings, hydraulic components, and transmission system parts.
Automotive components requiring high loads and wear resistance.
Decoration and Precision Instruments:
The silvery-white surface is suitable for decorative parts, watch parts, and optical instruments.
Production Process and Standards
Production Process:
Melting: Ensures uniform alloy composition.
Heat Treatment: Solution treatment (e.g., heating to 375°C followed by water cooling) improves weldability and mechanical properties.
Processing: Cold/hot rolling, forging, cold drawing, etc. to meet various shape and size requirements.
Implementation Standards:
ASTM B111M-1992, B122-1990 (US Standards).
DIN (German Standards), JIS (Japanese Standards), and other standards ensure material quality meets international standards.
GNEE can provide C72200 copper raw materials:
C72200 Copper Pipe
| Shape | Round,Square,Rectangular,Oval,half-round |
| OD | 1/8(3.18mm), 3/16(4.76mm), 1/4(6.35mm),5/16(7.94mm),3/8(9.52mm) 1/2(12.7mm),5/8(15.88mm),3/4(19.05mm),7/8(22.22mm) |
| Thickness | 0.35-1.5mm |
| Length | 12m ,15 m,200 kg one roll or upon request |
| Grade | C10100,C11000,C12200,C21000,C22000,C23000,C24000,C26000,C27000,C26800,C27200,C27400, C28000,C36500,C33000,C35300,C35600,C36000,C38500,C44300,C46400,C52100,C54400,C62300, C65500,C67500,C67600,C72200 ,C86300,C90700,C93200,C95400 etc. H59,H59-1,H59-2,H59-3,H60,H60-2,H62,H63,H65,H68,H70,H80,H90;C1100,C1020,C2680,C2800,C2600, C2801,C5191,C5210,C2200,C7521,C7541,C17200,C1070,C7701,QSn6.5-0.1,QSn8-0.3,QSn4-0.3, BZn18-18,BZn15-20,CuBe2 |
| Standard | GB/T5231-2001.GB/T1527-2006.JISH3100-2006,JISH3250-2006,JISH3300-2006,ASTMB152M-06, ASTMB187,ASTMB75M-02,ASTMB42-02,ASTMB111,etc |
| Price Term | Ex-Work,FOB,CNF,CFR,CIF,etc |
| Package | Standard export seaworthy package,suit for all kind of transport,or as required. |
C72200 Copper Bar
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Standard |
ASTM,AISI,EN,BS,JIS,ISO,GB |
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Material |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910, C10920,C10930,C11000,C11300,C11400,C11500,C11600,C12000, C12200,C12300,TU1,TU2,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,C70600,C70620, C71000,C71500,C71520,C71640,C72200,etc. |
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| Diameter |
1-500mm |
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Surface |
mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
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Price Term |
Ex-work, FOB, CFR, CIF, etc. |
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Payment Term |
T/T, L/C, Western Union, etc. |
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Delivery Time |
According to order's quantity. |
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Package |
Export standard package: bundled wooden box, suit for all kinds of transport, or be required. |
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MOQ |
300kg |
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Application |
Copper products are widely used in aviation, aerospace, ships, military industry, metallurgy, electronics, electrical, mechanical, transportation, construction and other fields of the national economy. |
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Contact |
If you have any question, please feel free to contact me. |
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C72200 Copper Plate and Strip
| Grade | C10100,C11000,C12200,C21000,C22000,C23000,C24000,C26000,C27000,C26800,C27200,C27400, C28000,C36500,C33000,C35300,C35600,C36000,C38500,C44300,C46400,C52100,C54400,C62300, C65500,C67500,C67600,C86300,C90700,C93200,C95400 etc. H59,H59-1,H59-2,H59-3,H60,H60-2,H62,H63,H65,H68,H70,H80,H90;C1100,C1020,C2680,C2800,C2600, C2801,C5191,C5210,C2200,C7521,C7541,C17200,C1070,C7701,QSn6.5-0.1,QSn8-0.3,QSn4-0.3, BZn18-18,BZn15-20,CuBe2 |
| Standard | GB/T5231-2001.GB/T1527-2006.JISH3100-2006,JISH3250-2006,JISH3300-2006,ASTMB152M-06, ASTMB187,ASTMB75M-02,ASTMB42-02,etc |
| Thickness | 0.2mm-3.0mm |
| Width | 100mm-1200mm |
| Surface | mill,polished,bright,hair line,brush,checkered,mirror,brush,antique,sand blast,etchingetc |
| Price Term | Ex-Work,FOB,CNF,CFR,CIF,etc |
| Package | Standard export seaworthy package,suit for all kind of transport,or as required. |
| Application | Copper sheet(also called red copper),can be made to do all sorts of drawing and bending stress components, such as manufacturing pins,rivets,gasket,nuts,conduits,the barometer spring,screen,radiator parts,etc. |
why choose us
Professional copper pipe supplier
The company has a cluster of leading copper processing production lines in China, including:
German imported precision copper tube production line (annual output of 30,000 tons)
Japanese technology copper foil rolling line (thinnest up to 6μm)
Fully automatic copper bar continuous extrusion line
Intelligent copper sheet and strip finishing mill unit
Digitalized control and management of the whole production process is realized through MES system, and the dimensional accuracy of the products can reach ±0.01mm.
Contact us today for a quotation：sales@gneesteel.com
Packaging and shipping
GNEE offers professional packaging for exported copper pipes. First, we apply anti-rust oil and plastic film to prevent oxidation. Then, we securely strap with steel straps and add corner protectors. Finally, we place the pipes on wooden pallets and reinforce them with iron or wooden boxes, ensuring they are moisture-proof and impact-resistant during ocean transport, while facilitating easy loading and unloading. All packaging meets export standards.
Customer visits
GNEE participated in the exhibition
