BMn40-1.5

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Product information

Model: BMn40-1.5 
BMn40-1.5 manganese white copper (Kang copper) is a copper-nickel alloy with the following characteristics:
Electrical properties
‌Stable resistivity‌: The resistivity is approximately 0.48 μΩ·m, with an extremely low temperature coefficient (0.00002°C⁻¹), making it suitable for precision electronic components. ‌
‌Stable thermoelectric effect‌: The resistance value hardly changes when the temperature changes, making it suitable for resistors, electric heating elements, etc. ‌
Corrosion resistance
‌Strong corrosion resistance‌: Especially suitable for high temperatures (400°C) and humid/corrosive environments, such as seawater or chemical equipment. ‌
Mechanical properties
‌Strength and ductility combined‌: The tensile strength is ≥ 540 MPa, and the elongation is ≥ 5%, making it suitable for manufacturing mechanical parts (such as bearings, gears). ‌
‌Stable post-processing performance‌: Through special processing, the yield strength and tensile strength can be enhanced to ensure long-term reliability. ‌
Processing performance
‌High plasticity‌: Supports processes such as forging, drawing, and cutting, and has better cutting performance than ordinary brass. ‌
‌Welding friendly‌: Can be welded using soft/hard brazing, oxy-acetylene welding, etc., but not suitable for metal arc welding with protection. ‌
Application fields
‌Electrical components‌: Resistors, shunts, etc. ‌
‌Chemical equipment‌: Valves, pipes, etc. for corrosion-resistant components. ‌
‌Mechanical manufacturing‌: Bearings, gears, etc. for high-load parts. ‌
‌Aerospace‌: Precision components in electronic devices. ‌

Product parameter

Chemical composition 
The chemical composition of BMn40-1.5 manganese white copper is as follows (in terms of mass percentage):
‌Copper (Cu): remainder
‌Nickel + Cobalt (Ni + Co): 39.0 - 41.0%
‌Manganese (Mn): 1.0 - 2.0%
‌Iron (Fe): ≤ 0.50%
‌Silicon (Si): ≤ 0.10%
‌Lead (Pb): ≤ 0.005%
‌Phosphorus (P): ≤ 0.005%
‌Sulfur (S): ≤ 0.02%
‌Arsenic (As): ≤ 0.010%
‌Carbon (C): ≤ 0.10%
‌Bismuth (Bi): ≤ 0.002%
‌Total impurities: ≤ 0.9%
Other possible trace components include:
‌Chromium (Cr): ≤ 0.1%
‌Antimony (Sb): ≤ 0.002%
‌Magnesium (Mg): ≤ 0.05%
The chemical composition of this alloy strictly complies with the national standard ‌GB/T 4423-1992‌13 and is suitable for high-demanding fields such as electrical engineering, chemical industry, and aerospace. 
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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.



ENTERPRISE ADVANTAGE




SERVICE

From steel procurement, processing, logistics, warehousing, 
Shiyu Metal has a perfect management system, tailor-made solutions for each customer, strictly control each link, to ensure safe, efficient and accurate product delivery to customers;




RESOURCE

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

Shiyu Metal set procurement, processing, agency, sales, logistics, 

warehousing in one, can provide customers with steel products procurement, processing, logistics and other one-stop services.




PRODUCT

Shiyu Metal operates a wide range of steel products, can provide customers with product size and width customization, prefabrication and other services, perfect product quality supervision system, to ensure high standards of product quality, high quality.