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    2. EN 10269 Grade X5CrNi18-10 (1.4301)

    EN 10269 Grade X5CrNi18-10 (1.4301) Fasteners

    Standard Austenitic Stainless Steel Bolts, Stud Bolts, Screws, Nuts & Washers in EN 10269 Grade X5CrNi18-10 (1.4301)

    EN 10269 Grade X5CrNi18-10 (1.4301) Fasteners are standard austenitic stainless steel fasteners equivalent to AISI 304, offering good general corrosion resistance, formability, and performance in a wide range of corrosive environments, used in pressure vessels, chemical equipment, food processing, and marine applications.

    EN 10269 X5CrNi18-10 Chemical composition

    Material designation Chemical composition, % by mass
    Name Number C Si Mn P max. S max. Al tot B Cr Mo Ni V Others
    Steels for quenching and tempering
    X5CrNi18-10 1.4301 ≤ 0,07 ≤ 1,00 ≤ 2,00 0.045 0,015 b - - 17,0 to 19,5 - 8,0 to 10,5 - N ≤ 0,10
    • a Elements not listed in this table may not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the usefulness of the steel.
    • b A controlled sulphur content of 0,015 % to 0,030 % improves the machinability and is therefore recommended and may be agreed at time of enquiry and order. For weldability, a controlled sulphur content of 0,008 % to 0,030 % is recommended and may be agreed at time of enquiry and order.
    • c For requirements regarding magnetic properties up to a maximum of 0,28 % C.

    EN 10269 X5CrNi18-10 Mechanical properties

    Mechanical properties at Room Temperature

    Mechanical properties at room temperature and at 20 °C of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/ECb

    Material designation Heat treatment conditiona Diameter c Proof strength Tensile strength Elongation after fracture Reduction in area Impact energy (ISO-V) at 20°C
    Name Number
    d mm Rp0,2 MPa min. Rm MPa A % min. Z % min. KV2 J min.
    X5CrNi18-10 1.4301 +AT d< 160 190 500 to 700 45 - 100
    +C700 d ≤ 35 350 700 to 850 20 - 80
    • a +AT = solution annealed; +C = cold work hardened; +N = normalized; +NT = normalized and tempered; +P = precipitation hardened;
    • +QT = quenched and tempered; +WW = warm worked (see Annex B).
    • b Products made of steel grades and these final heat treatment conditions support the Essential Safety Requirements of Directive 97/23/EC, see Annex 1, 7.5 of this directive.
    • c For rectangular cross-sections "d" will be replaced by "b" (see Figure 1).

    EN 10269 X5CrNi18-10 Proof strength

    Minimum 0,2 %-proof strength values at elevated temperature of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/EC d

    Material designation Heat treatment conditiona Diameter e d mm Minimum 0,2 %-proof strength Rp0,
    2 in MPa at a temperature (in °C) of:
    Name Number 50 100 150 200 250 300 350 400 450 500 550 600 650
    X5CrNi18-10 1.4301 +AT d ≤ 160 177*) 155 140 127 118 110 104 98 95 92 90 - -
    • a +AT = solution annealed; +C = cold work hardened; +N = normalized; +NT = normalized and tempered; +P = precipitation hardened; +QT = quenched and tempered; +WW = warm worked (see Annex B).
    • b This steel grade is generally not applied in the creep range.
    • c Values in brackets signify that the steel is not intended for use (and testing) at those temperatures.
    • d Products made to these steel grades and these final heat treatment conditions support the Essential Safety Requirements of Directive 97/23/EC; see Annex 1, 7.5 of this directive.
    • e For rectangular cross sections "d" will be replaced by "b" (see Figure 1).
    • *) Values calculated by linear interpolation.

    EN 10269 X5CrNi18-10 Tensile Strength

    Minimum tensile strength values at elevated temperatures of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/EC b

    Material designation Heat treatment conditiona Diameter c d mm Minimum tensile strength Rm
    in MPa at a temperature (in °C) of:
    Name Number 50 100 150 200 250 300 350 400 450 500 550 600 650
    X5CrNi18-10 1.4301 +AT d ≤ 160 480 450 420 400 390 380 380 380 375 360 335 300 -
    • a +AT = solution annealed; +C = cold work hardened; +N = normalized; +NT = normalized and tempered; +P = precipitation hardened; +QT = quenched and tempered; +WW = warm worked (see Annex B).
    • b Products made to these steel grades and these final heat treatment conditions support the Essential Safety Requirements of Directive 97/23/EC; see Annex 1, 7.5 of this directive.
    • c For rectangular cross-sections "d" will be replaced by "b"

    EN 10269 X5CrNi18-10 Impact Energy

    Minimum impact energy (longitudinal direction) at low temperature of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/EC b

    Material designation Heat treatment conditiona Diameter e d mm Minimum impact energy KV2 in J c
    (ISO-V test piece) at a test temperature in °C of:
    Name Number -270 -196 -160 -140 -120 -110 -100 -90 -80 -70 -60 -50 -40 -20 0 +20
    X5CrNi18-10 1.4301 +AT d ≤ 160 - 60 - - - - - - - - - - - - - 100
    +C700 d ≤ 35 - 50 - - - - - - - - - - - - - 80
    • a +AT = solution annealed; +C = cold work hardened; +N = normalized; +NT = normalized and tempered; +P = precipitation hardened; +QT = quenched and tempered; +WW = warm worked (see Annex B).
    • b Products made to these steel grades and these final heat treatment conditions support the Essential Safety Requirements of Directive 97/23/EC; see Annex 1, 7.5 of this directive.
    • c Average of 3 test results.
    • d Steel grade 1.4980 may be ordered for cryogenic purposes with impact values of 50 J at -270 °C, 60 J at -196 °C and 70 J at 20 °C.
    • e For rectangular cross sections "d" will be replaced by "b"
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