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Chart: Summary of Differences Between PSL 1 and PSL 2
Parameter PSL1 PSL2
Grade range A25 through X70 B through X80
Size range 0.405 through 80 4.5 through 80
Type of pipe ends Plain-end, threaded end Plain-end
Seam welding All methods: continuous welding limited to Grade A25 All methods except continuous and laser welding
Electric welds: welder frequency No minimum 100kHz minimum
Heat treatment of electric welds Required for grades > X42 Required for all grades (B through X80)
Chemistry: max C for seamless pipe 0.28% for grades >= B 0.24%
Chemistry: max C for welded pipe 0.26% for grades >= B 0.22%
Chemistry: max P 0.030% for grades >= A 0.025%
Chemistry: max S 0.030% 0.015%
Carbon equivalent Only when purchaser specifies SR18 Maximum required for each grade
Yield Strength, maximum None Maximum required for each grade
UTS, maximum None Maximum required for each grade
Fracture toughness None required Required for all grades
Nondestructive inspection of seamless Only when purchaser specifies SR4 SR4 mandatory
Repair by welding of pipe body, plate by skelp Permitted Prohibited
Repair by welding of weld seams without filler metal Permitted by agreement Prohibited
Certification Certificates when specified per SR15 Certificates (SR 15.1) mandatory
Traceability Traceable only until all tests are passed, unless SR15 is specified Traceable after completion of tests (SR 15.2) mandatory
Chart: Stainless Steel – Comparison of Grade Specifications
    Old British Euronorm Swedish Japanese
Grade UNS No BS En No Name SS JIS
301 S30100 301S21 - 1.431 X10CrNi18-8 2331 SUS 301
302 S30200 302S25 58A 1.4319 - - SUS 302
303 S30300 303S31 58M 1.4305 X8CrNiS18-9 2346 SUS 303
303Se S30323 303S42 - - - - SUS 303Se
304 S30400 304S31 58E 1.4301 X5CrNi18-10 2332 SUS 304
304L S30403 304S11 - 1.4306 X2CrNi18-11 2352 SUS 304L
304H S30409 - - 1.4948 X6CrNi18-11 - -
304N S30451 - - - - 2371 SUS 304N1
(302HQ) S30430 394S17 - 1.4567 X3CrNiCu18-9-4 - SUS XM7
305 S30500 305S19 - 1.4312 - - SUS 305
309S S30908 309S24 - 1.4833 X12CrNi23-13 - SUS 309S
310 S31000 310S24 - 1.484 X15CrNi25-20 - SUH 310
310S S31008 310S16 - 1.4845 X8CrNi25-21 2361 SUS 310S
314 S31400 - - 1.4841 X15CrNiSi25-21 - -
316 S31600 316S31 58H,58J 1.4401 X5CrNiMo17-12-2 2347 SUS 316
316L S31603 316S11 - 1.4404 X2CrNiMo17-12-2 2348 SUS 316L
316H S31609 316S51 - 1.4919 - - -
316N S31651 - - 1.4406 X2CrNiMoN17-11-2 2375 SUS 316N
316Ti S31635 320S31 - 1.4571 X10CrNiMoTi18-10 2350 SUS 316Ti
317L S31703 317S12 - 1.4438 X2CrNiMo18-16 2367 SUS 317L
321 S32100 321S31 58B,58C 1.4541 X6CrNiTi18-10 2337 SUS 321
329 S32900 - - 1.446 X8CrNiMo27-5 2324 SUS 329J1
347 S34700 347S31 58G 1.455 X6CrNiNb18-10 2338 SUS 347
403 S40300 403S17 - 1.4 X7Cr13 2301 SUS 403
405 S40500 405S17 - 1.4002 X7CrAl13 - SUS 405
409 S40900 409S19 - 1.4512 X6CrTi12 - SUH 409
410 S41000 410S21 56A 1.4006 X12Cr13 2302 SUS 410
416 S41600 416S21 56AM 1.4005 X12CrS13 2380 SUS 416
416Se S41623 416S41 - - - - -
420 S42000 420S37 56C 1.4021 X20Cr13 2303 SUS 420J1
420F S42020 416S29 - - - - SUS 420F
430 S43000 430S17 60 1.4016 X8Cr17 2320 SUS 430
430F S43020 - - 1.4104 X12CrMoS17 2383 SUS 430F
431 S43100 431S29 57 1.4057 X17CrNi16-2 2321 SUS 431
434 S43400 434S17 - 1.4113 X6CrMo17-1 2325 SUS 434
440C S44004 - - 1.4125 X105CrMo17 - SUS 440C
444 S44400 - - 1.4521 X1CrMoTi18-2 2326 SUS 444
630 S17400 - - 1.4542 X5CrNiCuNb16-4 - SUS 630
631 S17700 460S52 - 1.4568 X7CrNiAl17-7 2388 SUS 631
(904L) N08904 904S13 - 1.4539 X1NiCrMoCuN25-20-5 2562 -
(2111HTR) S30815 - - 1.4835 X9CrNiSiNCe21-11-2 2368 -
-2205 S31803 318S13 - 1.4462 X2CrNiMoN22-5-3 2377 SUS 329J3L
-2304 S32304 - - 1.4362 X2CrNiN23-4 2327 -
-2507 S32750 - - 1.441 X2CrNiMoN25-7-4 2328 -
(4565S) S34565 - - 1.4565 X2CrNiMnMoN24-17-6-4 - -
(Zeron100) S32760 - - 1.4501 X2CrNiMoCuWN25-7-4 - -
(UR52N+) S32520 - - 1.4507 X2CrNiMoCuN25-6-3 - -

* For more information on this source please visit Atlas Steels Australia.