Test method

    EN 14651 - Test method for metallic fibre concrete - flexural tensile strength (LOP, residual)

    Testing · NAC-037-TL

    In short

    EN 14651 - Test method for metallic fibre concrete - flexural tensile strength (LOP, residual). Amstelfy's laboratory determines limit of proportionality and residual flexural strengths fR1-fR4 of steel fibre reinforced concrete according to EN 14651 under its ISO/IEC 17025 accreditation (NAC-037-TL). The method is typically part of initial type testing, ETA test programmes or factory production control verification; results are reported in English for manufacturers across Europe.

    What we assess

    • limit of proportionality and residual flexural strengths fR1-fR4

    Products covered

    • steel fibre reinforced concrete

    Accreditation status

    ActivityStandardAccreditationValidityOn scope
    TestingISO/IEC 17025:2017NAC-037-TLvalid until 2 December 2028Yes
    Product certificationISO/IEC 17065:2012NAC-026-PPSvalid until 31 January 2030No
    Validation & verificationISO/IEC 17029:2019NAC-006-VVvalid until 31 January 2030No

    Route to market

    This test method is used inside initial type testing, ETA assessment programmes and factory production control verification. Amstelfy reports it as an accredited test under NAC-037-TL, either stand-alone or as part of a complete test programme.

    How it works

    1. 1

      Send the standard number, product description and intended use

    2. 2

      We confirm the applicable test series, sample quantities and timeline

    3. 3

      Samples are delivered to Veilmeesterweg 20, 1187 ZW Amstelveen (Mon-Fri 09:00-17:00)

    4. 4

      You receive the report in English, written for the TAB, Notified Body, evaluation service or programme operator.

    Frequently asked questions

    Yes - it is listed on the ISO/IEC 17025 testing scope NAC-037-TL.

    steel fibre reinforced concrete.

    Yes. Samples are shipped to the laboratory in Amstelveen, 10 minutes from Schiphol; quotations, test plans and reports are in English, and correspondence is also possible in Dutch and Turkish.

    Related standards

    All Concrete, fibres, mortars & concrete repair products testing