DIN EN 10253-4-2008 Butt-welding pipe fittings - Part 4 Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements English version o.pdf

1、June 2008DEUTSCHE NORM English price group 31No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.040.40; 77.140.20!$O 3

2、0 %, a 15 % level of cold deformation is not exceeded on the base material or if evidence is supplied that there is a minimum post cold-forming residual elongation A5 of 15 %. In any case, the post cold-forming residual elongation shall be at least 14 %. If heat treatment still will be demanded, thi

3、s shall be agreed at the time of enquiry and order. Option 3: Heat treatment of the fittings shall be carried out. 8.2.3.2 Hot forming Fittings shall be solution annealed after forming operations. 9 Technical requirements 9.1 General Fittings supplied and inspected in accordance with Clauses 7, 11 a

4、nd 12, shall comply with the requirements of this European Standard. In addition to the requirements of this European Standard, the general technical delivery requirements specified in EN 10021 shall apply. 9.2 Chemical composition 9.2.1 Cast analysis The cast analysis reported by the steel manufact

5、urer shall apply and comply with the requirements of Table 3 for austenitic steels and of Table 4 for austenitic-ferritic steels. 9.2.2 Product analysis Option 4: A product analysis shall be supplied. Table 5 specifies the permissible deviations of the product analysis from the specified cast analys

6、is given in Tables 3 and 4. DIN EN 10253-4:2008-06 EN 10253-4:2008 (E) 14 Table 3 Chemical composition (cast analysis)aof austenitic stainless steels, in % by mass Steel grade C Si Mn P S N Cr Cu Mo Nb Ni Ti Others Steel name Steel number max. max. max. max. max. X2CrNi18-9 1.4307 0,030 1,00 2,00 0,

7、045b0,015b 0,11 17,50-19,50 _ _ _ 8,00-10,00 _ _ X2CrNi19-11 1.4306 0,030 1,00 2,00 0,045b0,015b 0,11 18,00-20,00 _ _ _ 10,00-12,00 _ _ X2CrNiN18-10 1.4311 0,030 1,00 2,00 0,045b0,015b0,12-0,22 17,00-19,50 _ _ _ 8,50-11,50 _ _ X5CrNi18-10 1.4301 0,07 1,00 2,00 0,045b0,015b 0,11 17,00-19,50 _ _ _ 8,0

8、0-10,50 _ _ X6CrNiTi18-10 1.4541 0,08 1,00 2,00 0,045b0,015b_ 17,00-19,00 _ _ _ 9,00-12,00 5xC-0,70 _ X6CrNiNb18-10 1.4550 0,08 1,00 2,00 0,045b0,015b_ 17,00-19,00 _ _ 10xC-1,00 9,00-12,00 _ _ X1CrNi25-21 1.4335 0,020 0,25 2,00 0,025 0,010 0,11 24,00-26,00 _ 0,20 _ 20,00-22,00 _ _ X2CrNiMo17-12-2 1.

9、4404 0,030 1,00 2,00 0,045b0,015b 0,11 16,50-18,50 _ 2,00-2,50 _ 10,00-13,00 _ _ X5CrNiMo17-12-2 1.4401 0,07 1,00 2,00 0,045b0,015b 0,11 16,50-18,50 _ 2,00-2,50 _ 10,00-13,00 _ _ X6CrNiMoTi17-12-2 1.4571 0,08 1,00 2,00 0,045b0,015b_ 16,50-18,50 _ 2,00-2,50 _ 10,50-13,50 5xC-0,70 _ X2CrNiMo17-12-3 1.

10、4432 0,030 1,00 2,00 0,045b0,015b 0,11 16,50-18,50 _ 2,50-3,00 _ 10,50-13,00 _ X2CrNiMoN17-13-3 1.4429 0,030 1,00 2,00 0,045b0,015b0,12-0,22 16,50-18,50 _ 2,50-3,00 _ 11,00-14,00 _ _ X3CrNiMo17-13-3 1.4436 0,05 1,00 2,00 0,045b0,015b 0,11 16,50-18,50 _ 2,50-3,00 _ 10,50-13,00 _ _ X2CrNiMo18-14-3 1.4

11、435 0,030 1,00 2,00 0,045b0,015b 0,11 17,00-19,00 _ 2,50-3,00 _ 12,50-15,00 _ _ DIN EN 10253-4:2008-06 EN 10253-4:2008 (E)15 Table 3 (concluded) Steel grade C Si Mn P S N Cr Cu Mo Nb Ni Ti Others Steel name Steel number max. max. max. max. max. X2CrNiMoN17-13-5 1.4439 0,030 1,00 2,00 0,040b0,015b0,1

12、2-0,22 16,50-18,50 _ 4,00-5,00 _ 12,50-14,50 _ _ X2CrNiMo18-15-4 1.4438 0,030 1,00 2,00 0,040b0,015b 0,11 17,50-19,50 _ 3,00-4,00 _ 13,00-16,00 _ _ X1NiCrMoCu31-27-4 1.4563 0,020 0,70 2,00 0,030 0,010 0,11 26,00-28,00 0,70-1,50 3,00-4,00 _ 30,00-32,00 _ _ X1NiCrMoCu25-20-5 1.4539 0,020 0,70 2,00 0,0

13、30 0,010 0,15 19,00-21,00 1,20-2,00 4,00-5,00 _ 24,00-26,00 _ _ X1CrNiMoCuN20-18-7 1.4547 0,020 0,70 1,00 0,030 0,010 0,18-0,25 19,50-20,50 0,50-1,00 6,00-7.00 _ 17.50-18,50 _ _ X1NiCrMoCuN25-20-7 1.4529 0,020 0,50 1,00 0,030 0,010 0,15-0,25 19,00-21,00 0,50-1,50 6,00-7,00 _ 24,00-26,00 _ _ a Elemen

14、ts not listed in this table shall 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 mech

15、anical properties and the suitability of the steel. b For fittings welded without filler material the sum of sulphur and phosphorus shall be maximum 0,040 %. Table 4 Chemical composition (cast analysis)aof austenitic-ferritc stainless steels, in % by mass Steel grade C Si Mn P S N Cr Cu Mo Ni Others

16、 Steel name Steel number max. max. max. Max. max. X2CrNiMoN22-5-3 1.4462 0,030 1,00 2,00 0,035 0,015 0,10-0,22 21,00-23,00 _ 2,50-3,50 4,50-6,50 _ X2CrNiN23-4 1.4362 0,030 1,00 2,00 0,035 0,015 0,05-0,20 22,00-24,00 0,10-0,60 0,10-0,60 3,50-5,50 _ X2CrNiMoN25-7-4b1.4410 0,030 1,00 2,00 0,035 0,015 0

17、,20-0,35 24,00-26,00 _ 3,00-4,50 6,00- 8,00 _ X2CrNiMoCuWN25-7-4 1.4501 0,030 1,00 1,00 0,035 0,015 0,20-0,30 24,00-26,00 0,50-1,00 3,00-4,00 6,00-8,00 W: 0,50- 1,00 X2CrNiMoCuN25-6-3 1.4507 0,030 0,70 2,00 0,035 0,015 0,15-0,30 24,00-26,00 1,00-2,50 2,70-4,00 5,50-7,50 _ aElements not listed in thi

18、s table shall 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 an

19、d the suitability of the steel. BPatented steel grade DIN EN 10253-4:2008-06 EN 10253-4:2008 (E) 16 Table 5 Permissible deviations of the product analysis from specified limits on cast analysis given in Tables 3 and 4 Element Limiting value for the cast analysis in accordance width Tables 3 and 4 Pe

20、rmissible deviation of the product analysis a% by mass % by mass Carbon 0,030 + 0,005 0,030 0,08 0,01 Silicon 1,00 0,05 Manganese 1,00 + 0,03 1,00 2,00 +0,04 Phosphorus 0,030 + 0,003 0,030 to 0,045 + 0,005 Sulphur 0,015 + 0,003 Nitrogen 0,35 0,01 Chromium 16,50 20,00 0,20 20,00 28,00 0,25 Copper 1,0

21、0 0,07 1,00 2,50 0,10 Molybdenum 0,60 0,03 0,60 1,75 0,05 1,75 7,00 0,10 Niobium 1,00 0,05 Nickel 1,00 0,03 1,00 5,00 0,07 5,00 10,00 0,10 10,00 20,00 0,15 20,00 32,00 0,20 Titanium 0,70 0,05 Tungsten 1,00 0,05 a If several product analyses are carried out on one cast, and the contents of an individ

22、ual element determined lie outside the permissible range of the chemical composition specified for the cast analysis, then it is only allowed to exceed the permissible maximum value or to fall short of the permissible minimum value, but not both for one cast. 9.3 Mechanical properties 9.3.1 At room

23、temperature The mechanical properties at room temperature of the fittings of this European Standard shall conform to the requirements given in Tables 6 and 7. Option 5: Impact properties shall be verified out at room temperature (see Tables 6 and 7). For fittings manufactured from welded tubes the l

24、ocation of the test pieces, from the weld or opposite to the weld, shall be agreed at the time of enquiry and order. Option 6: (see Table 6). DIN EN 10253-4:2008-06 EN 10253-4:2008 (E)17 9.3.2 At elevated temperature The minimum proof strength Rp0,2and Rp1,0 values at elevated temperature are specif

25、ied in the relevant standard for the starting material dependent on the delivery form being used. Option 7: Proof strength Rp0,2 or Rp1,0 shall be verified at elevated temperature for austenitic steels. Proof strength Rp0,2 shall be verified at elevated temperature for austenitic-ferritic steels. Th

26、e temperature for tensile testing shall be agreed at the time of enquiry and order. 9.3.3 At low temperature Impact energy values at specified low temperature shall conform to the requirements in Tables 6 and 7. Option 8: Impact properties shall be verified at low temperature (See Tables 6 and 7). F

27、or fittings manufactured from welded tubes the location of the test pieces, from the weld or opposite to the weld, shall be agreed at the time of enquiry and order. DIN EN 10253-4:2008-06 EN 10253-4:2008 (E) 18 Table 6 Mechanical properties for wall thicknesses up to 60 mm aat room temperature and i

28、mpact properties at room temperature and at 196 C of austenitic stainless steels in the solution annealed condition (+AT), heat treatment and information about resistance to intergranular corrosion (continued) Tensile properties at room temperaturebImpact propertiesbSteel grade Hardness Proof streng

29、th Tensile strengthhElongationcMinimum average absorbed energy Reference heat treatment conditions Resistance to intergranular corrosion Limit temp. HB Rp0,2Rp1,0RmA KV MPa MPa MPa % J Cimax. min. min. min. min. Solution temperaturedCooling inef Method of EN ISO 3651-2 at RT at-196 C C Steel name St

30、eel number l t l t t X2CrNi18-9 1.4307 200 180 215 470-670 40 35 100 60 60 1000-1100 w, a yes A 350 X2CrNi19-11 1.4306 200 180 215 460-680 40 35 100 60 60 1000-1100 w, a yes A 350 X2CrNiN18-10 1.4311 210 270 305 550-760 35 30 100 60 60 1000-1100 w, a yes A 400 X5CrNi18-10 1.4301 200 195 230 500-700

31、40 35 100 60 60 1000-1100 w, a yesgA 300 X6CrNiTi18-10 1.4541 210 200 235 500-730 35 30 100 60 60 1020-1120 w, a yes A 400 X6CrNiNb18-10 1.4550 210 205 240 510-740 35 30 100 60 60 1020-1120 w, a yes A 400 X1CrNi25-21 1.4335 220 180 210 470-670 45 40 100 60 60 1030-1110 w, a yes A 400 X2CrNiMo17-12-2

32、 1.4404 200 190 225 490-690 40 30 100 60 60 1020-1120 w, a yes A 400 X5CrNiMo17-12-2 1.4401 200 205 240 510-710 40 30 100 60 60 1020-1120 w, a yesgA 300 X6CrNiMoTi17-12-2 1.4571 210 210 245 500-730 35 30 100 60 60 1020-1120 w, a yes A 400 X2CrNiMo 17-12-3 1.4432 200 190 225 490-690 40 30 100 60 60 1

33、020-1120 w, a yes A 400 X2CrNiMoN17-13-3 1.4429 220 295 330 580-800 35 30 100 60 60 1020-1120 w, a yes A 400 X3CrNiMo17-13-3 1.4436 200 205 240 510-710 40 30 100 60 60 1020-1120 w, a yesgA 300 X2CrNMo18-14-3 1.4435 200 190 225 490-690 40 30 100 60 60 1020-1120 w, a yes A 400 X2CrNiMoN17-13-5 1.4439

34、200 285 315 580-800 35 30 100 60 60 1100-1140 w, a yes C 400 X2CrNiMo18-15-4 1.4438 200 220 250 490-690 35 30 100 60 60 1100-1160 w, a yes C 400 X1CrMoCu31-27-4 1.4563 220 215 245 500-750 40 35 120 90 60 1100-1160 w, a yes C 400 DIN EN 10253-4:2008-06 EN 10253-4:2008 (E)19 Table 6 (end) Tensile prop

35、erties at room temperaturebImpact propertiesbSteel grade Hardness Proof strength Tensile strengthhElongationcMinimum average absorbed energy Reference heat treatment conditions Resistance to intergranular corrosion Limit temp. HB Rp0,2Rp1,0RmA KV MPa MPa MPa % J Cimax. min. min. min. min. Solution t

36、emperatured C Cooling inef Method of EN ISO 3651-2 at RT at-196 C Steel name Steel number l t l t t X1NiCrMoCu25-20-5 1.4539 220 220 250 520-720 35 30 120 90 60 1100-1150 w, a yes C 400 X1CrNiMoCuN20-18-7 1.4547 220 300 340 650-850 35 30 100 60 60 1180-1230 w, a yes C 400 X1NiCrMoCuN25-20-7 1.4529 2

37、20 300 340 600-800 40 40 120 90 60 1120-1180 w, a yes C 400 a For wall thicknesses greater than 60 mm the mechanical properties are subject to agreement at the time of enquiry and order. Option 6: Agreed mechanical properties for wall thicknesses greater than 60 mm apply. b l = longitudinal ; t = tr

38、ansverse. c See also 8.2.3.1. d The maximum temperatures are for guidance only. e w = water ; a = air ; cooling sufficiently rapid. f When tested in accordance with EN ISO 3651-2 (Appropriate method, A or B or C, shall be as indicated) up to the limit temperatures indicated in the last column of thi

39、s table. g In delivery condition. (Normally not fulfilled in the sensitized condition). h For the delivery conditions W 0, W 1 and W 2 which do not include solution annealing, the upper Rm limit may be exceeded by 70 MPa. i Up to these temperatures, the material should, within 100 000 h, not have ch

40、anged so as to show susceptibility of intergranular corrosion, when tested in conformity with EN ISO 3651-2. DIN EN 10253-4:2008-06 EN 10253-4:2008 (E) 20 Table 7 Mechanical properties for wall thicknesses up to 30 mm at room temperature and impact properties at room temperature and at - 40 C of aus

41、tenitic-ferritic stainless steel in the solution annealed condition (+AT), heat treatment and information about resistance to intergranular corrosion Tensile properties at room temperatureaImpact propertiesaLimit temp. Steel grade Hardness Proof strengthTensile strengthElongationbMinimum average abs

42、orbed energy Reference heat treatment conditions Resistance to intergranular corrosion fHB Rp0,2RmA KV MPa MPa % J C max. min. min. min. Solution temperaturecCooling indeMethod in EN ISO 3651-2 at RT at -40 C C Steel name Steel number l t l T t X2CrNiMoN22-5-3 1.4462 290 450 700-92025 20 120 90 40 1

43、020-1100 w, a yes B 250 X2CrNiN23-4 1.4362 290 400 600-820 25 25 120 90 40 950-1050 w, a yes A 250 X2CrNiMoCuN25-6-3 1.4507 310 500 700-900 20 20 100 100 40 1080-1160 w yes B 250 X2CrNiMoN25-7-4 1.4410 310 550 800-1000 20 20 100 100 40 1040-1120 w yes B or C 250 X2CrNiMoCuWN 25-7-4 1.4501 310 550 80

44、0-1000 20 20 100 100 40 1080-1160 w yes B or C 250 a l = longitudinal ; t = transverse. b See also 8.2.3.1. c The maximum temperatures are for guidance only. d w = water ; a = air ; cooling sufficiently rapid. e When tested in accordance with EN ISO 3651-2 (Appropriate method, A or B or C, shall be

45、as indicated) up to 250 C. f Up to these temperatures, the material should, within 100 000 h, not have changed so as to show susceptibility of intergranular corrosion, when tested in conformity with EN ISO 3651-2. DIN EN 10253-4:2008-06 EN 10253-4:2008 (E)21 9.4 Corrosion resistance The information

46、given in Tables 6 and 7 refer to the resistance of the steels to intergranular corrosion when tested according to EN ISO 3651-2 to the indicated method A or B or C. Guideline values for the limit temperature for susceptibility to intergranular corrosion are indicated in Tables 6 and 7. Option 9: A t

47、est for the resistance to intergranular corrosion shall be carried out. If other specific corrosion tests are required, they shall be agreed at the time of enquiry and order. 9.5 Weldability Fittings covered by this European Standard are weldable; however account should be taken of the fact that the

48、 behaviour of the steel during and after welding is dependent not only on the steel, but also essentially on the conditions of preparing and carrying out the welding. 10 Appearance and internal soundness 10.1 Appearance 10.1.1 The fittings shall be free from internal and external surface defects tha

49、t can be detected by visual inspection in accordance with this European Standard. 10.1.2 The internal and external surface finish of the fittings shall be typical of the manufacturing process and, where applicable, the heat treated condition employed. Normally the finish and surface condition shall be such, that any surface imperfections or marks requiring dressing shall be identified. 10.1.3 It shall be permissible to dress, by grinding or machinin