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    EN 10269 Tensile Strength

    Minimum Tensile Strength (Rm) at Elevated Temperatures for EN 10269 Materials

    This page details the minimum tensile strength values (Rm) at elevated temperatures for steel and nickel alloy grades under the EN 10269 standard, ensuring safety and compliance in high-temperature environments.

    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
    Austenitic steels
    X2CrNi18-9 1.4307 +AT d ≤ 160 440 410 380 360 350 340 340 330 - - - - -
    X5CrNi18-10 1.4301 +AT d ≤ 160 480 450 420 400 390 380 380 380 375 360 335 300 -
    X4CrNi18-12 1.4303 +AT d  160 480 450 420 400 390 380 380 380 375 360 335 300 -
    X2CrNiN18-10 1.4311 +AT d ≤ 160 527 490 460 430 420 410 410 - - - - - -
    X6CrNi25-20 1.4951 +AT d ≤ 160 495 470 450 430 420 410 405 400 385 370 350 320 -
    X2CrNiMo17-12-2 1.4404 +AT d ≤ 160 460 430 410 390 385 380 380 380 375 360 335 - -
    X5CrNiMo17-12-2 1.4401 +AT d ≤ 160 480 460 440 420 415 410 410 410 405 390 375 350 -
    X2CrNiMoN17-13-3 1.4429 +AT d ≤ 160 550 520 490 460 450 440 435 435 435 430 410 380 -
    X6CrNi18-10 1.4948 +AT d ≤ 160 480 450 420 400 390 380 380 380 375 360 335 300 -
    X10CrNiMoMnNbVB15-10-1 1.4982 +AT+WW d ≤ 100 610 565 530 505 490 475 465 460 450 440 430 410 390
    X3CrNiMoBN17-13-3 1.4910 +AT d ≤ 160 550 520 490 460 450 440 435 435 435 430 410 380 -
    X6CrNiMoB17-12-2 1.4919 +AT d ≤ 160 490 460 440 420 415 410 410 410 405 390 375 350 -
    X7CrNiTiB18-10 1.4941 +AT d ≤ 160 490 460 440 420 415 410 410 410 405 390 375 350 -
    X6NiCrTiMoVB25-15-2 1.4980 +AT+P d ≤ 160 - - - - - - - 720 710 700 690 670 -
    X7CrNiMoBNb16-16 1.4986 +WW+P d ≤ 100 635 615 590 570 550 530 505 485 460 440 420 395 375
    • 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"

    Minimum tensile strength values at elevated temperatures of nickel alloys in delivery conditions which do not support the Essential Safety Requirements of Directive 97/23/ECb

    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
    Nickel alloys
    NiCr19Fe19Nb5Mo3 2.4668 +P d ≤ 160 - - - - - - - - - - - - -
    NiCr20TiAl 2.4952 +AT+P d ≤ 160 1000 975 950 900 900 900 900 900 900 890 880 850 -
    NiCr15Fe7TiAl 2.4669 +AT+P d ≤ 25 1000 975 950 900 900 900 900 900 900 890 880 850 -
    • 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 do not support the Essential Safety Requirements of Directive 97/23/EC, unless other criteria are taken into account; see Annex 1, 7.5 of this directive.
    • c For rectangular cross-sections "d" will be replaced by "b"
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