B5

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Product information

Model: B5 
B5 ordinary white copper is a nickel-cobalt alloy based on copper, with the content of nickel and cobalt ranging from 4.4% to 5.0%. It has high strength and excellent corrosion resistance, and is suitable for manufacturing conductive and heat-conductive components in the transportation industry. Mechanical properties
Tensile strength: ≥ 215 MPa (in compliance with the national standard GB/T 2040-2002) 
Elongation: ≥ 20% (tensile performance of the sheet in the transverse direction) 
Mechanical properties in annealed state: Tensile strength ≥ 300 MPa, yield strength ≥ 100 MPa, elongation ≥ 35% 
Corrosion resistance
Seawater environment: De-nickelization corrosion resistance is superior to pure copper, annual corrosion rate in flowing seawater < 0.02 mm/year 
Industrial atmosphere: Sulfide and chloride corrosion resistance is moderate, suitable for low-pollution environments 
High-temperature oxidation: Long-term operating temperature ≤ 200℃, short-term up to 300℃ (surface forms a dense oxide film) 
Processing characteristics
Cold processing: Suitable for stamping, stretching, and rolling, with medium hardening rate, annealing temperature 500-600℃ (with hydrogen or vacuum protection) 
Hot processing: Hot rolling/forging temperature 750-900℃, avoid surface peeling caused by high-temperature oxidation

Product parameter

Chemical composition
The chemical composition of B5 white copper is based on copper (Cu) as the main component, with nickel (Ni) as the main alloying element, and contains a small amount of other elements. According to national standards GB/T 2040-2002 and GB/T 5231, the typical composition range is as follows:
‌Main Components‌
Copper (Cu): 94.5%-95.5% (approximate)
Nickel (Ni): 4.4%-5.5% (some standards require 4.8%-5.5%)
Cobalt (Co): Some standards mention that the total amount of nickel and cobalt is 4.4%-5.0% (but most literature does not clearly state the cobalt content)
‌Impurity Control‌
Iron (Fe): ≤0.02% or ≤0.5%
Lead (Pb), sulfur (S), carbon (C), phosphorus (P): all ≤0.01%
Total other impurities: ≤0.5%
‌Special Note‌
Some literature mentions that B5 white copper may contain zinc (Zn) or manganese (Mn), but the national standard does not clearly specify the addition of these elements.
Note: There are differences in the mention of cobalt in different sources, and the national standard (GB/T 2040-2002 or GB/T 5231) should be taken as the reference. 
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COMPANY PROFILE




Shiyu Metal Material Technology Co., Ltd. is a collection of procurement, processing, agent, sales, logistics, warehousing in one of the enterprises, the company has a large-scale spot supply base in China, with domestic and foreign large steel mills and suppliers to maintain good relations of cooperation, with a full range of multi-channel procurement resources.
Shiyu Metal main products: nickel base alloy, Hastelloy, super austenitic stainless steel, duplex stainless steel, cobalt base alloy, pure nickel, titanium and titanium alloy, heat resistant, corrosion resistant alloy and other kinds of steel, a large number of product categories, can meet the size and thickness customization, prefabrication and other diversified needs.
The company has ISO9001 quality certification, the company's product standards include: the United States (UNS) ASTM /ASME, AMS, German DIN/EN, Japan (SUS) JIS and other standards supply, provide the original material certificate. We can supply according to the standards and technical requirements provided by customers to ensure that the goods and specifications are complete to meet the needs of various merchants. From raw materials to finished products, all go through three quality inspection to ensure the qualified rate of finished products. Shiyu Metal strives for perfection in every detail to ensure that the quality of products in different countries and regions around the world can meet international standards. Shiyu Metal has established a good strategic cooperative relationship with the world famous steel mills such as HAYNES, ATI, SPECIALMETALS, VDM, OUTOKUMPU, Japan Metallurgy, Nippon Steel, and Datong Special Steel.
The products supplied by Shiyu Metal are widely used in nuclear power, petrochemical, mechanical engineering, precision processing, aerospace, electronic instruments, medical equipment, automobile manufacturing, environmental protection, wind power application, seawater desalination, shipbuilding industry, paper making machinery, mining engineering, cement manufacturing, metallurgical manufacturing, corrosion resistant environment field, high temperature environment field, mold field, etc. It is a global high-quality supplier of special steel materials.
Shiyu Metal Material Technology Co., Ltd. is committed to the purchase, agent and sales of special steel, and has a perfect special steel sales management system and product quality supervision system. The company has been adhering to the "integrity, innovation, responsibility, win-win" business philosophy, adhere to the "quality first, customer first" service purpose, to provide customers with quality services and high-quality steel products. Shiyu Metal actively participates in the development of domestic steel industry ecology, and is willing to contribute to the development of national special steel.



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Shiyu Metal maintains good cooperative relations with medium and large steel mills and suppliers at home and abroad, 

and has established good strategic cooperative relations with world famous steel mills such as the United States, Germany, Finland and Jap.




SCALE

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