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    Euro Steel Approximate Grade Equivalents


    Stainless Steel Approximate Grade Equivalents

    Equivalents Stainless Steel Technical Data

    NOTE: The values given below are typical. Stainless steels within the same classification (e.g. Austenitic stainless steels) will have similar values, but even slight variations of chemical composition within the specification limits of the same steels will affect the actual value. Reported values are often slightly different, depending on the reference. Many of these properties are temperature dependent. The values given below should not be used as guaranteed or minimum values. Values are typical values and should not be used for design purposes.

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    Euro Steel Corrosion Guide


    Pages-from-Euro-Steel-Corrosion-Guide Stainless Steel Technical DataPages-from-Euro-Steel-Corrosion-Guide-2-e1529479204555 Stainless Steel Technical Data

    • NR = The material is not recommended • ND = No data is available
    • R = Indicates that the material is resistant to the named chemical up to the temperature shown, subject to limitations indicated by the footnotes.

    1 = Not if chlorides are present
    2 = Limited data
    3 = Depends on the acid
    4 = Dry acid fumes, attack may occur if moisture builds up
    5 = Anhydrous
    6 = Depends on concentration
    7 = May discolour with time
    8 = In strong solutions only when inhibited
    9 = Pitting possible in stagnant conditions
    10 = Possibility of pitting
    11 = May cause stress corrosion cracking
    12 = When free of SO2
    13 = May cause contamination of product
    14 = Dilute hypochlorites can be used to sterilise some stainless steels
    15 = General corrosion may become excessive
    16 = 10%
    17 = In the absence of impurities
    18 = Dilute
    19 = Some attack at high temperatures

    * Corrosion information courtesy of Columbus Stainless Steel (PTY) LTD. Values are typical guidelines and should not be used for design purposes.

    Exposure in chloride containing media can result in localised corrosion.
    In order of increasing resistance to localised corrosion: 3CR12 < 430 < 304L < 316L < 2205

    • Design vessels for complete drainage – avoid sharp corners and stagnant areas.
    • Close crevices and lap joints by continuous welding.
    • Remove solids in suspension. Prevent sedimentation. Ensure continuous agitation and
    adequate flow rates.
    • Use compressive non-absorbent gaskets or inert sealing compounds.
    • Ensure non-impairment of passive surface. Repair / restore any affected areas

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    Euro Steel Abbreviations & Definitions

    Abbreviations & Definitions

    ANSI – American National Standard Institute
    (most ANSI specifications has been replaced by ASME)
    API – American Petroleum Institute
    ASME – American Society of Mechanical Engineers
    ASTM – American Society for Testing Materials
    AWWA – American Water Works Association
    BBE – Bevelled Both Ends
    BLE – Bevelled Large End
    BS – British Standards
    BSP – British Standard Pipe Thread
    CPLG – Coupling
    DDQ – Deep Drawing Quality
    DIA or ‘D’ – Diameter
    DIN – Deutsches Institut fur Normung (German Standard)
    DOM – Direct Off Mill
    ECC – Eccentric
    EFW – Electric Fusion Welded
    EN – European Norms
    FF – Flat Face
    GR – Grade
    ISO – International Standards Organization
    JIS – Japanese Industrial Standard
    LJ – Lapjoint
    LR – Long Radius
    LW – Lap Weld
    MPT – Male Pipe Thread
    MSS – Manufacturers Standardisation Society
    of the valve and fittings industry
    NPS – Nominal Pipe Size
    NPT – National Pipe Thread Taper
    NOM – Nominal
    OD – Outside Diameter
    OHSACT – Occupational Health and Safety Act
    PBE – Plain Both Ends
    PE – Plain Ends
    PIPE – A tube used to convey water, gas, oil, etc

    POE – Plain One End
    PSE – Plain Small End (Swage Nipple)
    RED – Reducer
    RF – Raised Face
    RTJ – Ring Type Joint
    SABS – South African Bureau of Standards
    SANS – South African National Standards
    SCH – Schedule
    SCRWD – Screwed
    SF – Smooth Finish
    SMLS – Seamless
    SO – Slip On
    SR – Short Radius
    SS – Stainless Steel
    SW – Socket Weld
    TBE – Threaded Both Ends
    TOE – Thread One End
    TOL – Threadolet or Tolerence
    TPI – Thread Party Inspection
    TS – Tensile Strength
    TSE – Threaded Small End
    TUBE – A long, hollow cylinder for conveying
    or holding liquids or gases.
    USW – Ultrasonic Welding
    UT – Ultrasonic Testing
    UTS – Ultimate Tensile Strength
    WN – Weld Neck or welding neck
    WOG – Water Oil and Gas
    WOL – Weldolet
    WP – Wrought Product
    WP-S – Wrought Product, Seamless (as part of the
    description for wrought fittings. E.g. (WP304L S)
    WPW – Wrought Product Welded
    WPWX – Welded with X-Ray
    (as part of the description for wrought fittings
    E.g. 90 Degree Elbow WP304L WX)
    XS – Extra Strong as per ASME B36.10m
    XXS – Double Extra Strong as per ASME B36.10m

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