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  • Metal Anticorrosion Coating Tools Automotive Scratch - China

    price: contact company for price

    BNC® Water-based chromium-free zinc-aluminum coating Beijing Yongtaihe

    Metal Anticorrosion Technology Co., Ltd. successfully developed BNC

    coating, chromium-free metal anti-corrosion coating of which it has

    proprietary intellectual property rights. As an alternative product of

    DACROMET coating - BNC® water-based chromium-free zinc-aluminum

    coating, completely satisfies the requirements for increasingly strict

    legislations of environmental protection for governments of various

    countries and automobile industry in the world, realizes no

    environmental pollution from purchasing materials to production and

    processing, and application of the product. It is a world-class green

    product of environmental protection, its performance index can be well

    prepared with same kind of products (such as GEOMET and DELTA) of

    European countries, USA, Japan and other developed countries, and

    achieving advanced world level. BNC® Water-based chromium-free zinc-

    aluminum coating is an inorganic coating formed by lapping or laminating

    scale form zinc powders and scale form aluminum powders, which

    anticorrosion is equivalent to that of DACROMET anticorrosive coating.

    Four Ways of Anti-Corrosion -Physical Shielding Effect:

    Overlapping zinc and aluminum flakes effectively prevent the penetration

    of corrosive media -Cathodic Protection: Zinc powder acts as the

    sacrificial anode to protect steel from corrosion -Passivation:

    Metal oxides slow down the bimetallic corrosion of zinc and steel -Self-

    repairing function: Oxygen and carbon dioxide in the air react with zinc

    on the surface of the coating to generate zinc oxide and zinc carbonate.

    Since the volumes of zinc oxide and zinc carbonate are larger than that

    of zinc, they act as repairers when they migrate to the damaged area.

    Performance index: -Thickness: thickness of coating

    8~12μm, Thickness with top-coating 12-15μm; -No

    production of hydrogen embrittlement: Acid washing is not needed for

    coating pre-processing; -Free from bimetallic corrosion threat:

    Aluminum eliminates Zn-Al or Zn-steel bimetallic corrosion that occurs

    frequently in zinc coating; -Solvent resistance: the inorganic

    coating features excellent solvent resistance; -Heat resistance:

    the coating keeps excellent corrosion resistance after three hours heat

    sensitization at 300℃; -Electric conductivity: with a large

    number of metal flakes, the coating is conductive; -Corrosion

    resistance: for thread parts, water-based chromium-free Zn-Al coating of

    thickness 8-10μm can endure a salt spray test for 720 hours,

    without red rust; while for non-thread fasteners, its over 1000 hours

    -Adhesion performance:≥8Mpa -Scratch and Hardness: it

    is superior to performance of the Zn-Cr coating, and hardness of the

    coating surface is surpasses 8H. -Friendly environmental

    performance: without any form of chromium (such as trivalent and

    hexavalent chromium etc) Wide application of the coating, BNC® water-

    based chromium-free zinc-aluminum coating does not contain chromium, it

    has wider application than coating of zinc and chromium; except that it

    can cover all the fields in which the coating of zinc chromium is

    applied, can also be applied to the anticorrosion of pipelines for

    potable water and to the anticorrosion in other fields closer to human

    life. The coating meets the following requirements:

    1.Worldwide statutes on environment

    2.Statutes on vocational safety and health management

    3.Relevant requirements from the automotive industries in Europe, the United States and Japan

    4.Requirements on the management of scrapped transportation tools

    -Free of poisonous metals: free of nickel, cadmium, lead, barium or mercury;

    -Water based: free of poisonous solvent;

    -VOC emission: VOC emission complies with legal requirements.

    - Requirements on Restrict of Hazardous Substance in EU.

    Wider Uses

    Since it is free of chromium, BNC coating finds wider uses than zinc-chromate coating. n addition to covering all the applications of zinc-chromate coating, it can be used for anti corrosion purpose in areas closer to human lives such as pipelines for drinking water.

    Easy Upgrading

    BNC coating is similar to zinc-chromate coating in terms of the ways of painting and processing. With minimum modification, existing zinc-chromium production lines in China can achieve product upgrading, thus improving product quality dramatically and increasing companies’ competitiveness.

    Metal Anticorrosion Coating

    Feel free to contact us with all your questions


    Company Contact:


    • Phone: 861061506667813

    • Address: No.139,Fengtai Road,Fengtai District,Beijing, Beijing, China

    • Email: Email


    Published date: September 7, 2012 -

    • Business Description: We are 12 years established with more than 50 emplyees.Our annual turnover is about USD 15 million.
      It is a high tech company of scientific research, development, technique popularization and industrial production .
      Our main products are BeNice Zn Cr Coating and BNC Environment friendly Water based Chromlun free Zn Al Anticorrosion Coating.
      The products are exported to the United States, Japan, Germany, Switzerland, Italy and south east Asian countries.Specially, BNC chromium free production has entered south east Asina and EU markets.
      Beijing Yongtaihe Metal Anticorrosion Technology Co.,Ltd.

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