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    2. EN 10269 Grade X3CrNiCu18-9-4 (1.4567)

    EN 10269 Grade X3CrNiCu18-9-4 (1.4567) Fasteners

    Copper-Bearing Austenitic Stainless Steel Bolts, Stud Bolts, Screws, Nuts & Washers in EN 10269 Grade X3CrNiCu18-9-4 (1.4567)

    EN 10269 Grade X3CrNiCu18-9-4 (1.4567) Fasteners are copper-bearing austenitic stainless steel fasteners offering enhanced resistance to sulfuric acid corrosion and improved machinability, used in chemical processing, pulp and paper, and industrial bolting applications where both corrosion resistance and machinability are required.

    EN 10269 X3CrNiCu18-9-4 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
    X3CrNiCu18-9-4 1.4567 ≤ 0,04 ≤ 1,00 ≤ 2,00 0.045 0,015 b - - 17,0 to 19,0 - 8,5 to 10,5 - N ≤ 0,10
    Cu: 3,0 to 4,0
    • 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 X3CrNiCu18-9-4 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 condition
    a    		 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.
    X3CrNiCu18-9-4 1.4567 +AT d< 160 175 450 to 650 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).

    Other grades: EN 10269 X5CrNiMo17-12-2 (1.4401), EN 10269 X2CrNiMoN17-13-3 (1.4429), EN 10269 X6CrNi18-10 (1.4948), EN 10269 X10CrNiMoMnNbVB15-10-1 (1.4982). Data for all grades: EN 10269 Chemical Composition, EN 10269 Mechanical Properties, EN 10269 Heat Treatment.

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