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    EN 10269 Proof Strength

    Minimum 0.2% Proof Strength (Rp0.2) at Elevated Temperatures for EN 10269 Grades

    Explore the minimum 0.2% proof strength values (Rp0.2) at elevated temperatures ranging from 50°C to 650°C for various steels and nickel alloys specified under the EN 10269 standard for pressure vessel bolting.

    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
    Steels for quenching and tempering
    C35E 1.1181 +N d ≤ 60 289*) 270*) 251 229 213 192 182 173 - - - - -
    +QT d ≤ 60 289*) 270*) 251 229 213 192 182 173 - - - - -
    60 < d ≤ 150 287*) 264*) 242*) 220 203 186 167 147 - - - - -
    C45E 1.1191 +QT d ≤ 150 330*) 314 299*) 284 255 235 206 - - - - - -
    35B2 1.5511 +QT d ≤ 60 289*) 270*) 251 229 213 192 182 173 - - - - -
    60 < d ≤ 150 287*) 264*) 242*) 220 203 186 167 147 - - - - -
    20Mn5 1.1133 +N d ≤ 60 306*) 283*) 260 237 213 192 182 173 - - - - -
    60 < d ≤ 150 304*) 278*) 251 229 213 192 182 173 - - - - -
    25CrMo4 1.7218 +QT d ≤ 100 435*) 428*) 420*) 412 392 363 333 304 275 235 - - -
    100 < d ≤ 150 414*) 403*) 393*) 382 372 344 324 294 265 226 - - -
    42CrMo4 1.7225 +QT d ≤ 60 720*) 702 677 640 602 562 518 475 420 375 - - -
    42CrMo5-6 1.7233 + QT d ≤ 100 681*) 662 639 616 601 585 570 547 516 462 362 223 -
    100 < d ≤ 150 625*) 605 584 563 549 535 521 500 472 422 331 204 -
    40CrMoV4-6 1.7711 +QT d ≤ 100 687*) 670 647 631 608 593 577 554 523 470 400 293 -
    100 < d ≤ 160 631*) 612 591 577 556 542 528 507 479 429 366 268 -
    27NiCrMoV15-6 1.6957 +QT d ≤ 160 - 660 - 625 600 580 550 (510) c (460) c (400) c - - -
    26 NiCrMo14-6 1.6958 +QT 70 < d ≤ 160 - 853 843 834 804 785 765 - - - - - -
    21CrMoV5-7 1.7709 +QT d ≤ 160 542*) 530 515*) 500 480*) 460 435*) 410 380 350 - - -
    20CrMoVTiB4-10 1.7729 +QT d ≤ 160 642*) 624 603 595 581 573 559 537 508 464 406 334 -
    X15CrMo5-1 1.7390 +NT or +QT d ≤ 160 392*) 345 335 327 323 322 316 306 285 256 - - -
    X22CrMoV12-1 1.4923 +QT1 d ≤ 160 585*) 560 545*) 530 505*) 480 450*) 420 380 335 - - -
    X12CrNiMoV12-3 b 1.4938 +QT1 d ≤ 160 730*) 680 668*) 655 653*) 650 630*) 610 560 505 400 - -
    Austenitic steels
    X2CrNi18-9 1.4307 +AT d ≤ 160 164*) 145 130 118 108 100 94 89 85 81 80 - -
    X5CrNi18-10 1.4301 +AT d ≤ 160 177*) 155 140 127 118 110 104 98 95 92 90 - -
    X4CrNi18-12 1.4303 +AT d ≤ 160 177*) 155 140 127 118 110 104 98 95 92 90 - -
    X2CrNiN18-10 1.4311 +AT d ≤ 160 246 205 175 157 145 136 130 125 121 119 118 - -
    X6CrNi25-20 1.4951 +AT d ≤ 160 177 140 128 116 108 100 94 91 86 85 84 - -
    X2CrNiMo17-12-2 1.4404 +AT d ≤ 160 187*) 165 150 137 127 119 113 108 103 100 98 - -
    X5CrNiMo17-12-2 1.4401 +AT d ≤ 160 191*) 175 158 145 135 127 120 115 112 110 108 - -
    X2CrNiMoN17-13-3 1.4429 +AT d ≤ 160 256*) 215 195 175 165 155 150 145 140 138 136 - -
    X6CrNi18-10 1.4948 +AT d ≤ 160 174*) 157 142 127 117 108 103 98 93 88 83 78 -
    X10CrNiMoMnNbVB15-10-1 1.4982 +AT+WW d ≤ 100 490 463 446 434 423 413 405 396 391 386 378 365 346
    X3CrNiMoBN17-13-3 1.4910 +AT d ≤ 160 239*) 205 187 170 159 148 141 134 130 127 124 121 -
    X6CrNiMoB17-12-2 1.4919 +AT d ≤ 160 194*) 177 162 147 137 127 122 118 113 108 103 98 -
    X6CrNiTiB18-10 1.4941 +AT d ≤ 160 183*) 162 152 142 137 132 127 123 118 113 108 103 -
    X6NiCrTiMoVB25-15-2 1.4980 +AT+P d ≤ 160 592*) 580 570 560 550 540 530 520 510 490 460 430 380
    X7CrNiMoBNb16-16 1.4986 +WW+P d ≤ 100 489*) 470*) 451*) 432 412 393 372 353 334 314 284 255 206
    • 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.

    Minimum 0,2 %-proof strength values at elevated temperature of steels and 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 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
    Steels for quenching and tempering
    X22CrMoV12-1 1.4923 +QT2 d ≤160 681*) 650 625*) 600 575*) 550 518*) 485 440 390 - - -
    X19CrMoNbVN11-1 1.4913 +QT d ≤ 160 726*) 701 676 651 643 627 610 577 544 495 412 305 -
    Nickel alloys
    NiCr20TiAl 2.4952 +AT+P d ≤ 160 595*) 586*) 577*) 568 564 560 550 540 530 520 510 500 480
    NiCr19Fe19Nb5Mo3 2.4668 +P d ≤ 160 - - - - - 880 - 865 - 860 - 860 -
    NiCr15Fe7TiAl 2.4669 +AT+P d ≤ 25 625*) 620 615 610 606 601 596 592 587 582 578 573 565
    • 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".
    • *) Values calculated by linear interpolation.

    More EN 10269 data: EN 10269 Chemical Composition, EN 10269 Mechanical Properties, EN 10269 Tensile Strength, EN 10269 Impact Energy, EN 10269 Creep Rupture Properties, EN 10269 Relaxation Properties, EN 10269 Physical Properties, EN 10269 Heat Treatment.

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