QCr1

Online

Product information

Grade: QCr1
QCr1 chromium bronze is a copper-based alloy, mainly composed of copper and chromium. It possesses high strength, excellent electrical conductivity, and corrosion resistance, and is widely used in the power and mechanical industries. Here are its key performance characteristics:
Mechanical properties
‌Tensile strength and hardness at room temperature‌: The hardness in the aged state can reach HRB 70-80, and after cold processing, the hardness is ≥ 75 HRB, maintaining high strength at 400°C. ‌
‌Hardening mechanism‌: Chromium forms nano-sized CrCu₂ precipitates, which refine the grains and inhibit high-temperature recrystallization, significantly enhancing wear resistance and anti-softening ability (softening temperature ≥ 500°C). ‌
‌Notch sensitivity‌: There is a notch sensitivity issue, and it is not suitable for scenarios prone to stress concentration such as rectifier plates. ‌
Physical properties
‌Electrical and thermal conductivity‌: The solid solution state conductivity is ≥ 75% IACS, and after aging treatment, it increases to ≥ 80% IACS; the thermal conductivity is approximately 334.94 W/(m·K). ‌
‌Processing properties‌: Good cold/hot pressure processing properties, but the cutting performance is only 20% of that of easy-cutting brass. ‌
Corrosion resistance characteristics
‌Chemical stability‌: Excellent oxidation resistance at room temperature and at high temperatures (such as 400°C), capable of resisting atmospheric, freshwater, and some corrosive environments. ‌
Application scenarios
‌Power industry‌: Switch contacts, lead frames, etc. ‌
‌Mechanical industry‌: Mold inserts, bearings, welding electrodes, etc. for wear-resistant components. 
‌High-temperature environment‌: Furnace parts, hot pressing molds, etc. requiring resistance to softening. ‌

Product parameter

Chemical composition 
The chemical composition of QCr1 chromium bronze mainly consists of copper (Cu) as the base material, chromium (Cr) as the alloying element, with the content typically ranging from 0.6% to 1.2%. Additionally, there are small amounts of iron (Fe), lead (Pb), silicon (Si) and other impurity elements. Among them, iron is ≤ 0.1%, lead is ≤ 0.05%, silicon is ≤ 0.10%, and the total of other elements does not exceed 0.75%. 
Component Function
The addition of chromium significantly enhances the strength and corrosion resistance of the alloy, especially maintaining stable performance in high-temperature and corrosive environments. The impurity elements such as iron, lead, etc. need to be strictly controlled to avoid negative impacts on performance. 
Please provide the text that needs to be translated accurately and without

Product display

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.



Contact us

Phone:021-60871505 Email:sypww@outlook.com Address:Bldg 9, Phase 1, G60 Cloud Corridor, Xinqiao, Songjiang, Shanghai
All content in this website is copyrighted by Shiyu Metal Material Technology Co., LTD Copyright©2023-2026 沪ICP备2023035269号-1