• ROXMA anchor chains

    Our materials competence centre has been developing high-quality solutions for demanding industrial customer requirements for many years. In recent years, we have also become the technology leader in the industry in the field of machine and plant engineering.

    By combining our technological expertise, 100 years of experience and the mindset of a start-up, we are now also setting new standards at sea with ROXMA.

    Stainless steel anchor chains

    ROXMA stainless steel anchor chains reach a new level in terms of durability, tensile strength and corrosion resistance and far exceed all current standards. Thanks to the balanced mixed structure of the duplex steel, ROXMA anchor chain offers a strong combination of strength and corrosion resistance.

    To ensure smooth running in the winch, all ROXMA anchor chains are calibrated to an accuracy of tenths of a millimetre. To protect them from the harsh environment at sea, they are given a very elaborate surface finish as standard. This guarantees the outstanding durability of ROXMA products.

    ROXMA product flyer


    Get a comprehensive overview of our high-quality chain solutions with our product flyer. 


     

     

    Download here

    Item no.
    A4L
    Item no.
    Duplex
    tb2similar standardBreaking load
    A4L
    Breaking load
    Duplex
    RXSD6LRXSD6LN618,520DIN 7663000 kg3850 kg
    RXSD8LRXSD8LN82426DIN 7665300 kg6700 kg
    RXSD10LRXSD10LN102834DIN 7668500 kg10800 kg
    RXSD13LRXSD13LN133644DIN 76612500 kg18000 kg
    RXSD14LRXSD14LN144150DIN 76615400 kg26000 kg
    RXSD16LRXSD16LN164553DIN 76620000 kg21000 kg
            
    RXSI6LRXSI6LN61820,9ISO 45653000 kg3850 kg
    RXSI8LRXSI8LN82427,8ISO 45655300 kg6700 kg
    RXSI10LRXSI10LN103035ISO 45658500 kg10800 kg
    RXSI12LRXSI12LN123642ISO 456511300 kg14000 kg
    RXSI16LRXSI16LN164854EN 81820000 kg26000 kg

    Surcharge for electropolishing €3.10/kg (not discountable). Other dimensions available on request: ⌀ 3-18mm
     

    Hot-dipped galvanized anchor chains

    Hot-dipped galvanized ROXMA anchor chains are ideal for use in colder waters. The anchor chains are bent and welded from selected chain steels on state-of-the-art equipment. This enables us to guarantee the highest processing quality. Subsequently
    the ROXMA chains are tempered in a modern and fully automated multi-purpose chamber furnace line. Targeted heat treatment optimises the mechanical properties of the chain.

    As a final step, the ROXMA anchor chains are given a clean and optimum hot-dip galvanisation.

    Item no.
    Grade 70
    tb2similar standardBreaking load 
    Grade 70
    RXGD670618,520DIN 7663960 kg
    RXGD87082426DIN 7667100 kg
    RXGD1070102834DIN 76611200 kg
    RXGD1370133644DIN 76619000 kg
    RXGD1670164553DIN 76628200 kg
          
    RXGI67961820,9ISO 45653960 kg
    RXGI67082427,8ISO 45657100 kg
    RXGI1070103035ISO 456511200 kg
    RXGI1270123642ISO 456516000 kg

    Other dimensions available on request: ⌀ 3-18mm
     

    Advantages of duplex / AISI 318LN
     

    • Higher corrosion resistance(ROXMA PREN at least 35)
    • Lower weight, as the high breaking load means that a smaller chain diameter can be used compared to conventional hot-dip galvanised chains
    • Suitable for all waters
    • Sea water resistant up to 35° C

    Which anchor chain for which application?

    For use in warmer waters, we produce our ROXMA anchor chains from high-quality stainless steel of European production.

    For colder waters, we manufacture hot-dip galvanised anchor chains in grade 40 and grade 70.

    Breaking force test

    Anchor chain 8x24 mm
    Comparison of actual values in kilonewtons

    Anchor chainTest forcebreaking force
    ROXMA grade 7045 kN77.8 kN
    ROXMA grade 4020.1 kN44.8 kN
    Conventional anchor chain20 kN30.1 kN

    Quality promise

    The quality of ROXMA anchor chains is extensively tested in our own laboratory for each production run. In addition to tensile tests, this also includes microscopic cross-sectional analyses.

    We are also one of the few anchor chain manufacturers with our own salt spray chamber. There, our ROXMA anchor chains are subjected to months of endurance testing for susceptibility to corrosion under extreme conditions.

    A detailed comparative test between our ROXMA anchor chain and a cheap stainless steel chain from Asian production is available for download as a PDF.

    Market companion:

    Weld seam tears before reaching the predetermined breaking load
     

    ROXMA:

    Weld seam holds, material breakage in case of severe overload

    Pickled and glossy passivated as standard

    Ferritic and non-metallic microparticles can be the starting point for corrosion in untreated stainless steel, as they prevent the complete formation of the passive layer. A pickled and bright passivated surface eliminates this source of defects.

    All residues on the surface are removed in the pickling process. The surface is then passivated with a glossy finish. This creates a seamless passive layer in a controlled process.

    The corrosion resistance is therefore significantly higher.

    Technical specifications

    MaterialPRENCorrosion
    protection class
    Corrosion
    Resistance
    A2 AISI 30417,50CRC IILow
    A4L AISI 316L23,10 - 28,35CRC IIIMedium
    Standard Duplex
    AISI 318LN
    30,85 - 38,07CRC IVHigh
    ROXMA Duplex
    AISI 318LN
    min. 35,00CRC IVHigh