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    Quality

    Quality assurance

    Committed to delivering excellence through rigorous standards at every stage.

    Certifications

    Two management systems, audited every year

    Both certificates are IAF-accredited. The scope covers everything we melt, roll and finish.

    ISO 9001:2015 certificate issued to Navkardeep Steel Private Limited

    ISO 9001:2015

    Quality management system

    Certificate No.
    4CCPC8
    Scope
    Manufacturer of Stainless Steel Billets, RCS, Round Bars, Bright Bars, Angle and Flat Bars, Channels, Hexagonal and Square Bars and Rebars
    ISO 14001:2015 certificate issued to Navkardeep Steel Private Limited

    ISO 14001:2015

    Environmental management system

    Certificate No.
    CFDFE207
    Scope
    Manufacturer of Stainless Steel Billets, RCS, Round Bars, Bright Bars, Channels, Hexagonal and Square Bars and Rebars

    In-house laboratory

    Our quality testing parameters

    Quality assurance begins at the melt shop, with control of composition, structure and inclusion pattern for consistently clean steel. Every stage of production is tested against global standards.

    • Optical emission spectrometerChemical composition verification — every heat tested before casting
    • Portable handheld spectrometerField-ready spectrometer for on-site and incoming material verification
    • Rockwell and Brinell hardness testersSurface and bulk hardness testing for mechanical property confirmation
    • Corrosion resistance testingSalt spray and chemical exposure testing for grade performance verification
    • Ultrasonic testing for internal soundnessNon-destructive internal defect detection to ensure structural integrity
    • Mechanical propertiesTensile strength, yield strength and elongation testing per ASTM A276 and IS 6911
    • Surface finish qualityVisual and dimensional surface inspection for finish consistency
    • Dimensional accuracySize, straightness and tolerance verification per IS 6911
    • Metallurgical examinationMicrostructure analysis to confirm grain structure and phase composition
    • Certification and standards complianceMaterial Test Certificate issued with every consignment — heat number and chemistry included

    Material Test Certificate

    What our MTC covers

    Every consignment leaves the plant with a heat-wise MTC, so your inspector can trace each bar to the heat it was cast from.

    • Heat number
    • Grade and standard
    • Chemical composition
    • Mechanical properties
    • Product dimensions
    • Our ISO certification reference

    Source: ASTM A276 / IS 6911

    Chemistry standards

    Composition limits in weight percent for the grades we melt.

    ← scroll to see full table

    Chemical composition limits by grade
    ElementSS202SS304SS316SS316LSS430
    Cr %13–1518–2016–1816–1816–18
    Ni %4–68–10.510–1410–14max 0.75
    C %max 0.15max 0.08max 0.08max 0.03max 0.12
    Mn %7.5–10max 2max 2max 2max 1
    Mo %——2–32–3—

    ISO 15510:2010 reference

    Stainless steel grade equivalents — international standards

    Designations across international standards. Rows set in full weight are the grades most often ordered from us.

    ← scroll to see full table

    Stainless steel grade equivalents across standards
    TypeISO nameENUNSAISIJISGB
    MX12Cr131.4006S41000410SUS410S41010
    MX12CrS131.4005S41600416SUS416S41617
    MX39Cr131.4031S42000420—S42040
    MX19-430-20-11.4019, 1.4104S43020430F—S11717
    FX17CrNi16-21.4057S43100431SUS431S43120
    FX6CrAl131.4002S40500405SUS405S11348
    AX12CrMnNiN17-7-51.4372S20100201SUS201S35350
    AX12CrMnNiN18-9-51.4373S20200202SUS202S35450
    AX10CrNiS18-91.4305S30300303SUS303S30110
    AX2CrNi19-111.4306S30403304LSUS304LS30403
    AX5CrNi18-91.4301S30400304SUS304S30408
    AX2CrNiMo18-14-31.4435S31603316LSUS316LS31603
    AX5CrNiMo17-12-21.4401S31600316SUS316S31608

    A = Austenitic · F = Ferritic · M = Martensitic

    This table is for information only. It has been carefully checked but may still contain unspotted errors. Source: ISO 15510:2010.