CASES OF THE B16 VALVE, FLANGES, FITTINGS AND GASKETS STANDARDS Approval Date: May 27, 2016 Cases will remain available for use until annulled by the applicable Standards Committee B16 Case 4 13 Cr Stainless Steel ASME B16.5 and ASME B16.47 Flanges ASTM, Class 2, and A217 CA15 Material Inquiry: May ASTM and Class 2 forgings (UNS S41000) and ASTM A217 CA15 castings (UNS J91150) conforming to the chemical requirements shown in Tables 1A and 1B, the mechanical properties listed in Tables 2A and 2B, and otherwise conforming to the applicable requirements in the specifications listed in Table 3 and in this Case be used for the construction of B16.5 and B16.47 flanges? Reply: It is the opinion of the Committee that the material described in the inquiry may be used with the applicable requirements of ASME B16.5 and ASME B16.47 for the construction of flanges, provided the following additional requirements are met. (a) The pressure temperature ratings shall be in accordance with Tables 4A (metric bar units) and 4B (U.S. Customary psig units) as developed in accordance with ASME B16.5, Appendix A. (b) Service temperatures for Class 2 and A217 CA15 materials shall not exceed 650 C (1200 F). Service temperature for shall not exceed 538ºC (1000ºF). (c) 50 flanges shall be limited to 538ºC (1000ºF) service as noted in Tables 4A and 4B. (d) The material described in the inquiry (martensitic stainless steel) shall be considered a Material Group 2 material for B16.5 and B16.47 applications. (e) This Case number shall be included in the marking of the flange and including on the Material Test Report. 1
Table 1A Chemical Requirements ASTM and Class 2 Element Chemical Composition Limits, % max. Carbon 0.15 Manganese 1.00 Phosphorous 0.040 Sulfur 0.030 Silicon 1.00 Nickel 0.50 Chromium 11.5 13.5 Molybdenum Columbium Titanium Other Elements Table 1B Chemical Requirements ASTM A217 CA15 Element Chemical Composition Limits, % max. Carbon 0.15 Manganese 1.00 Phosphorous 0.040 Sulfur 0.025 Silicon 1.50 Nickel 1.000 Chromium 11.5 14.0 Molybdenum 0.50 Columbium Titanium Vanadium 2
A182 F6a A217 CA15 Table 2A Mechanical Property Requirements Metric Units A217 CA15 Stress A217 CA15 Stress Temp C -30 483 621 276 448 138 177 to 40 65 261 424 138 177 100 482 620 252 410 138 177 125 248 403 137 176 150 473 608 245 398 135 174 175 243 394 - - 200 465 598 241 391 133 171 225 239 389 - - 250 459 590 238 387 131 169 275 236 384 - - 300 450 579 234 380 129 166 325 444 570 231 375 127 163 350 435 560 227 369 124 160 375 425 547 223 361 122 156 400 412 530 216 351 118 151 425 398 511 209 339 113 146 450 380 488 200 325 109 117 475 360 463 190 309 92.1 83.3 (2) 500 338 434 179 290 68.4 (1) 60.1 525 313 402 166 269 51.3 42.0 550 37.7 28.6 575 26.4 19.8 600 17.9 13.8 625 11.6 9.81 650 6.68 6.76 NOTE: (1) stresses for temperatures of 480 C and above are values obtained from time-dependent properties. (2) stresses for temperatures of 455 C and above are values obtained from time-dependent properties. 3
A182 F6a Class 2 Table 2A continued Mechanical Property Requirements Metric Units Class 2 Class 2 Stress Temp C -30 586 379 168 to 40 65 359 168 100 585 347 167 125 341 166 150 574 336 164 175 333-200 565 331 162 225 329-250 557 327 159 275 325-300 547 322 157 325 539 318 154 350 529 312 151 375 516 306 148 400 501 297 143 425 483 288 138 450 461 275 123 475 437 262 93.5 (1) 500 410 246 68 525 380 227 51.3 550 37.7 575 26.4 600 17.9 625 11.6 650 6.68 NOTE: (1) stresses for temperatures of 455 C and above are values obtained from time-dependent properties. 4
A182 F6a Class 2 Class 2 Table 2B Mechanical Property Requirements U.S. Customary Units Class 2 A217 CA15 A217 CA15 A182 CA15 Temp F -20 to 85 55 24.3 90 65.0 25.7 100 200 85 50.6 24.3 90 59.8 25.7 300 83.3 48.8 23.8 88.2 57.7 25.2 400 81.8 48.0 23.4 86.7 56.7 24.8 500 80.6 47.3 23.0 85.3 55.9 24.4 600 78.6 46.3 22.5 83.2 54.7 23.8 650 77.1 45.5 22.0 81.6 53.8 23.3 700 75.2 44.5 21.5 79.6 52.6 22.7 750 72.8 43.2 20.8 77.0 51.0 22.0 800 69.8 41.6 19.9 73.9 49.1 21.1 850 66.3 39.6 17.2 (1) 70.2 46.8 15.9 (1) 900 62.3 37.3 12.3 66.0 44.0 11.0 950 57.8 34.6 8.8 61.2 40.9 7.6 1000 52.8 31.6 6.4 55.9 37.3 5.0 1050 4.4 3.3 1100 2.9 2.2 1150 1.8 1.5 1200 1.0 1.0 NOTE: (1) stresses for temperatures of 850 F and above are values obtained from time-dependent properties. 5
Table 2B continued Mechanical Property Requirements U.S. Customary Units A182 F6a Temp F -20 to 70 40 20.0 100 200 70 36.8 20.0 300 68.6 35.5 19.6 400 67.4 34.9 19.3 500 66.4 34.4 19.0 600 64.7 33.7 18.5 650 63.5 33.1 18.1 700 61.9 32.4 17.7 750 59.9 31.4 17.1 800 57.5 30.2 16.4 850 54.6 28.8 15.6 900 51.3 27.1 12.3 (1) 950 47.6 25.2 8.8 1000 43.5 23.0 6.4 1050 1100 1150 1200 NOTE: (1) stresses for temperatures of 900 F and above are values obtained from time-dependent properties. Forgings Castings Table 3 Specification ASTM A182/A182M ASTM A217/A217M 6
Table 4A (Metric) Pressure-Temperature Ratings for Group 2 Materials Nominal Designation Forgings Castings Plates 13Cr A182 Gr. F6a (1) A217 CA15 --- A182 Gr. 6a Class 2 Temperature C Working Pressures by Classes, bar Class 150 300 600 900 1500 2500-29 to 38 20.0 51.7 103.4 155.1 258.6 430.9 50 19.5 51.7 103.4 155.1 258.6 430.9 100 17.7 51.5 103.0 154.6 257.6 429.4 150 15.8 50.3 100.3 150.6 250.8 418.2 200 13.8 48.6 97.2 145.8 243.4 405.4 250 12.1 46.3 92.7 139.0 231.8 386.2 300 10.2 42.9 85.7 128.6 214.4 357.1 325 9.3 41.4 82.6 124.0 206.6 344.3 350 8.4 40.3 80.4 120.7 201.1 335.3 375 7.4 38.9 77.6 116.5 194.1 323.2 400 6.5 36.5 73.3 109.8 183.1 304.9 425 5.5 35.2 70.0 105.1 175.1 291.6 450 4.6 33.7 67.7 101.4 169.0 281.8 475 3.7 28.6 57.1 85.7 142.8 238 500 2.8 20.6 41.2 61.8 103 171.7 525 1.9 14.4 28.8 43.2 72 120 538 1.4 12 24 36 60 100 550 (2) 9.8 19.6 29.4 49 81.7 575 6.8 13.6 20.4 33.9 56.6 600 4.7 9.5 14.2 23.7 39.4 625 3.4 6.7 10.1 16.8 28 650 2.3 4.6 6.9 11.5 19.1 NOTES: (1) Not to be used over 538 C. (2) 50 flange ratings terminate at 538 C. 7
Table 4B (U.S. Customary) - Pressure-Temperature Ratings for Group 2 Materials Nominal Designation Forgings Castings Plates 13Cr A182 Gr. F6a (1) A217 CA15 --- A182 Gr. F6a Class 2 Temperature F Working Pressures by Classes, psig Class 150 300 600 900 1500 2500-20 to 100 290 750 1500 2250 3750 6250 200 260 750 1500 2250 3750 6250 300 230 730 1455 2185 3640 6070 400 200 705 1410 2115 3530 5880 500 170 665 1330 1995 3325 5540 600 140 605 1210 1815 3025 5040 650 125 590 1175 1765 2940 4905 700 110 570 1135 1705 2840 4730 750 95 530 1065 1595 2660 4430 800 80 510 1015 1525 2540 4230 850 65 485 975 1460 2435 4060 900 50 375 755 1130 1885 3145 950 35 260 520 780 1305 2170 1000 20 170 345 515 855 1430 1050 (2) 115 225 340 565 945 1100 75 150 225 375 630 1150 50 105 155 255 430 1200 35 70 105 170 285 NOTES: (1) Not to be used over 1000 F. (2) 50 flange ratings terminate at 1000 F. 8