1、Open die steel forgings for general engineering purposes Part 4: Stainless steels English version of DIN EN 10250-4 ICs 77.1 40.20; 77.1 40.85 DIN - EN 10250-4 Freiformschmiedestcke aus Stahl fr allgemeine Verwendung - Teil 4: Nichtrostende Sthle Supersedes parts of DIN 17440, September 1996 edition
2、. European Standard EN 10250-4 : 1999 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been prepared by ECISS/TC 28. The responsible German body involved in its preparation was the Normenausschuss Eisen und Stahl (Steel and Iron Standards C
3、ommittee), Technical Committee Schmiedestcke. Amendments Parts of DIN 17440, September 1996 edition, have been superseded by the specifications of DIN EN 10250-4. Previous editions DIN 17440: 1967-01, 1972-1 2, 1985-07, 1996-09. EN comprises 20 pages. No pari of this standard may be reproduced witho
4、ut the prior permission of Ref. No. DIN EN 10250-4 : 2000-0 hl Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany, s the exclusive right of sale for German Standards (DIN-Normen). English price group 10 Sales No. 1110 07.00 EUROPEAN STANDARD NORME EUROPENNE EUROPIS
5、CHE NORM EN 10250-4 October 1999 ICs 77.140.20; 77.140.85 English version Open die steel forgings for general engineering purposes Part 4: Stainless steels Pices forges en acier pour usage gnral - Partie 4: Aciers inoxy - dables Nichtrostende Sthle Freiformschmiedestcke aus Stahl fr allgemeine Verwe
6、ndung - Teil 4: This European Standard was approved by CEN on 1999-09-09. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliogra
7、phical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CE
8、N member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands,
9、 Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, 8-1050 Brussels O 1999. CEN - All rights of exploitation in any form and by any mea
10、ns reserved worldwide for CEN national members. Ref. No. EN 10250-4 : 1999 E Page 2 EN 10250-4 : 1999 Contents Foreword 1 Scope 2 Normative references 3 Chemical Composition 4 Heat treatment 5 Mechanical properties Annex A (informative) Heat treatment details Annex B (informative) Mechanical propert
11、ies at low temperatures Annex C (informative) Elevated temperature proof strength Page 3 4 4 4 10 10 14 17 18 Page 3 EN 10250-4 : 1999 Foreword This European Standard has been prepared by Technical Committee ECISSRC 28 “Steel forgings”, the secretariat of which is held by BSI. This European Standard
12、 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2000, and conflicting national standards shall be withdrawn at the latest by April 2000. This European Standard has been prepared under a mandate given to CEN by th
13、e European Commission and the European Free Trade Association. This European Standard is considered to be a supporting standard to those application and product standards which in themselves support an essential safety requirement of a New Approach Directive and which make reference to this European
14、 Standard. The titles of the other Parts of this European Standard are: Part 1: General requirements Part 2: Non-alloy quality and special steels Part 3: Alloy special steels According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound t
15、o implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Page 4 EN 10250-4 : 1999 1 Scope This Part of this European Standard
16、 specifies the technical delivery requirements for open die forgings, forged bars and products pre-forged and finished in ring rolling mills, manufactured from stainless steels with ferritic, martensitic, austenitic and austenitic-ferritic structures. NOTE1. The majority of steels listed in this Par
17、t of EN 10250 are identical to steels specified EN 10088-3 and more extensive information on properties is given in that European Standard. General information on technical delivery conditions is given in EN 10021 2 Normative references This European Standard incorporates by dated or undated referen
18、ce, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to, or revisions of, any of these publications apply to this European Standard only when incorpora
19、ted in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 10021 General technical delivery requirements for iron and steel products EN 10088-3 Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rod
20、s and sections for general purposes. EN 10250- 1 Open steel die forgings for general engineering purposes - Part 1 : General requirments 3 Chemical composition 3.1 Cast analysis The chemical composition of the steel shall be detennined by cast analysis and shall conform to the analysis given in tabl
21、es 1,2 and 3. (see A.7, A.8, and A.11 of EN 10250-1). Elements not quoted in tables 1,2, and 3 shall not be added intentionally to the steel without the agreement of the purchaser, except for the purpose of finishing the heat. All reasonable measures should also be taken to prevent the addition from
22、 the scrap, or other material used in the manufacture of the steel, of such elements which affect the corrosion resistance, mechanical properties and applicability of the steel. Page 5 EN 10250-4 : 1999 3.2 Product analysis The product analysis shall not deviate from the specified cast analysis (see
23、 tables 1,2 and 3) by more than the values specified in table 4 (see 9.2 to EN 10250-1). Page 6 EN 10250-4 : 1999 s E a* 8 2? vi O m” O o- VI Page 7 EN 10250-4 : 1999 x 6 E* E - x G69 0- Page 8 EN 10250-4 : 1999 Y) 8 z I 0 a e 22 9 9 Y) a M Page 9 EN 10250-4 : 1999 Element Carbon Table 4: Permissibl
24、e deviations between the product analysis and the limiting values given in tables 1,2 and 3 for the cast analysis Permissible maximum content in the cast analysis % 50,030 0,030 I0,20 0,20 I0,35 Nitrogen Aluminium I Silicon I0,35 0,lO I0,30 I l,oo r Manganese I l,o I2,O I Phosphorus 50,045 Sulfur r
25、5 0,015 0,015 20,030 Chromium 11,50 I15,OO 20,oo I28,OO 15,OO I20,OO Copper 1,oo I l,oo I 5,OO Molybdenum 0,60 1,75 I0,60 I 1,75 I7,OO I 1,oo 1,oo I 5,OO 5,OO I 10,oo 10,oo I20,OO 20,oo I32,OO Titanium Niobium Tungsten I0,70 I 1,oo I l,oo Permissible deviation % + 0,005 f 0,Ol f 0,02 + 0,05 + 0,03 f
26、 0,04 + 0,005 + 0,003 + 0,005 f 0,Ol f 0,05 f 0,15 i 0,20 f 0,25 5 0,07 f 0,10 2 0,03 f 0,05 f 0,lO + 0,03 5 0,07 i 0,lO f 0,15 f 0,20 * 0,05 f 0,05 2 0,05 Page 1 O EN 10250-4 : 1999 4 Heat treatment 4.1 Heat treatment conditions are given in tables A. 1, A.2 and A.3 for guidance. 4.2 The grain size
27、 of the forgings shall be left to the discretion of the manufacturer. 4.3 If any straightening operation is carried out after the final heat treatment the procedure shall be such that the forgings will be free from harmful residual stress. If with the agreement of the purchaser, this procedure inclu
28、des a thermal stress relief this treatment shall also be applied to the test specimens either when still attached to the forging or after removal. 5 Mechanical properties 5.1 Room temperature properties The mechanical properties determined on test pieces selected, prepared and tested in accordance w
29、ith clauses 11 and 12 of EN 10250-1 shall conform to the property requirements given in tables 8,9 and 10. 5.2 Low temperature properties Low temperature properties of certain steels are shown in table B. 1 for information. 5.3 Elevated temperature properties Elevated temperature proof strength valu
30、es are given in tables C1, C2 and C3 for information. Page 11 EN 10250-4 : 1999 Heat treatment condition) Table 5: Mechanical properties at room temperature - ferritic and martensitic grades Thickness of ruling section X12Cr13 X20Cr 13 X30Cr13 1.4006 A QT650 160 1.4021 A - QT7G 160 QT800 160 1.4028
31、A - QT850 160 X17CrNi 16-2 X3CrNiMol3-l 1.4057 A 250 QT800 250 QT900 250 1.4313 A - X4CrNiMol&S-l 1.4418 XSCrNiCuNblW 1.4542 QT650 450 QT780 450 QT900 450 A - QT760 450 QT900 450 A - P 930 250 P 1070 250 P 1300 250 8 - 12 12 10 - 14 14 - i2 IO 6- 15 - 70 70 50 - 90 80 - 40 20 Steel designation Tensi
32、le strength Rm Hardness HE3 max” Pmof strength Rpo.2 min N/lTlIt12 Elongation Energy impact Amin% Number X6CrA113 230 400 to 600 I l I 200 240 400 to 630 - 450 - 15 220 - 230 - - 245 - 730 max 650 to 850 760 max 700 to 850 800 to 950 800 max 850 to IO00 - 500 600 - 13 12 - 650 - 600 700 1ooOmaX 800
33、to 950 900 to 1050 - 520 620 800 - 15 15 12 - 50 50 40 1100max 650 to 830 780 to 980 900 to 1100 1100max 760 to 960 900 to 1100 1200 mau 930 min 1070 min 1300 min - 550 700 - 16 16 - 70 60 - 720 1m 1 I50 - 15 12 8 I A = annealed - QT = quenched and tempered - P =precipitation hardened For informatio
34、n only ) i = longitudinal tr = transverse Page 12 EN 10250-4 1999 Table 6: Mechanical properties at room temperature in the solution anneaied conditions - Austenitic grades Steel designation Name X2CrNil8-9 X2CrNil9-I1 X2CrNiN18-IO X4CrNil8- 10 X6CrNiTil8-10 X2CrNiMo 17-1 2-2 X2CrNiMoN 17- 12-2 X4Cr
35、NiMol7-12-2 XCrNiMoTii7-12-2 X2CrNiMoN17-13-3 X4CrNiMol7-13-3 X2CrNiMo18-14-3 XlNiCrMoCu20-20-5 X6CrNiNbl8-10 X 1 NiCrMoCu3 1-27-4 Xi CrNiMoCuN20- 18-7 YI NiCrMoCuN25-20-7 Number 1.4307 1.4306 1.431 i 1.4301 1.4541 1.4404 1.4406 1.440 1 1.457 1 1.4429 1.4436 1.4435 1.4539 1.4550 1.4563 1.4547 1.4529
36、 ickness of ruling section tR mm max 250 250 250 250 450 250 250 250 450 400 250 250 250 450 250 250 250 Proof strength 175 I80 270 190 190 200 280 200 200 280 200 200 230 205 220 300 300 R,I.o min N/mz 210 215 305 225 225 235 315 235 235 315 235 235 260 240 250 340 340 Tensile strength R, N/mz 450
37、to 680 460 to 680 550 to 760 500 to 700 500 to 700 500 to 700 580 to 800 500 to 700 500 to 700 580 to 800 500 to 700 500 to 700 530 to 730 SI0 to 740 500 to 750 650 to 850 650 to 850 Elongation A min % 35 3s 30 35 30 30 30 30 30 30 30 30 30 30 30 30 35 Impact energy KV min 1“ 1 O0 1 00 1 o0 1 O0 1 O
38、0 1 O0 1 O0 1 O0 1 O0 1 O0 I O0 1 O0 1 O0 1 o0 1 O0 1 o0 1 O0 - - J tr“ 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 60 I I =longitudinal tr = transverse Page 13 EN 10250-4 : 1999 R, 0.2 min N/ttlm2 Table 7: Mechanical properties at room temperature in the solution annealed condition - Austenitic
39、-ferritic grades Rm A min KV min N/ItUl12 % J Steel designation Name Number X3CrNiMoN27-5-2 1.4460 X2CrNiMoN22-5-3 1.4462 X2CrNiN23-4 1.4362 X2CrNiMoCuN25-6-3 1.4507 X2CrNiMoN25-7-4 1.4410 X2CrNiMoCuWN25-7-4 1.4501 Thickness of ruling section mm max 160 350 160 160 160 160 I tR 620 to 880 650to880 6
40、00to830 700to900 Proof Tensile Elongation Inpact strength I strength I 1 energy 1 20 15 85 50 25 20 100 60 25 20 100 60 25 20 100 60 460 450 400 500 Page 14 EN 10250-4 : 1999 Annex A (informative) Heat treatment details Heat treatment conditions are given in tables A.l, A.2 and A.3. Steel designatio
41、n Name Number X6CrAI 13 1.4002 Table A.l: Heat treatment conditions - ferritic and martensitic grades Heat Annealing treatment temperature C condition) A 750 to 850 Quenching temperature “C X12Cr13 Type of cooling Tempering temperature C QT 650 X6Cr17 X20Cr13 1.4016 A 750 to 850 I .4021 - Air 750 to
42、 850 I%+-= - - Oil or air 950 to 1000 - 680 to 780 - XSCrNiCuNb 16-4 - 950 to 1050 1.4542 - - 650 to 750 Oil or air 600 to 750 I+ 950 to 1050 - P 1070 I+ Oil or air 600 to 700 - - X30Cr13 1.4028 A 750 to 850 QT 850 - I- X17CrNi16-2 X3CrNiMo13-4 X4CrNiMo 16-5-1 1.4057 A 600 to 800 QT 800 - QT 900 - 1
43、.4313 A 600 to 650 QT 650 - QT 780 - QT 900 - 1.4418 A 600 to 650 QT 760 - QT 900 - - 1020 to 1080 Fumaceorair - Oil (580 to 630) + (550 to 650) 950 to 105 I Oil or air 1 625 to 675 I 1020 to 1080 - Oil (540 to 600) + (520 to 640) - - 950 to 1050 950 to1050 Oil or air Oil or air (650 to 700) + (600
44、to 620) 550 to620 950 to 1050 - 520 to580 Oil or au - - 950 in 1050 950 to 1050 Oil 590 to 640 Oil 550 to 620 I) A - annealed QT = quenched and tempered. P =precipitation hardened - 1020 to 1080 Fumace or air - Oil 620 1020 to 1080 1020 to 1080 Oil 550 Oil 480 Page 15 EN 10250-4 : 1999 Table A.2 : H
45、eat treatment conditions - austenitic grades Steel designation Name X2CrNi 18-9 X2CrNi 19- 1 1 X2CrNiN 1 8- 1 O X4CrNi18-10 X6CrNiTi 18- 1 O XCrNiNb 1 8- 1 O X2CrNiMol7- 12-2 X2CrNiMoN17-11-2 X6CrNiMoTil7- 12-2 X5CrNiMo17-12-2 X3CrNiMo17-13-2 X2CrNiMoNl7- 13-3 X2CrNiMo 18- 14-3 XlNiCrMoCu25-20-5 XlC
46、rNiMoCuN20- 18-7 XlNiCrMoCuN25-20-7 X lNiCrMoCu3 1-27-4 Number 1.4307 1.4306 1.4311 1.430 1 1.454 1 1.4550 1.4404 1 .MO6 1.457 1 1.4401 1 .a36 1.4429 1.4435 1.4539 1.4547 1.4529 1.4563 Solution annealing temperature “C 1000 to 1100 1000 to 1100 1000 to 1100 1000 to 1100 1020 to 1120 1020 to 1120 102
47、0 to 1120 1020 to 1120 1020 to 1120 1020 to 1120 1020 to 1120 1020 to 1 120 1020 to 1120 1050 to 1150 1140 to 1200 1120 to 1180 1050 to 1150 Cooling medium Water or air Water or air Water or air Water or air Water or air Water or air Water or air Water or air Water or air Water or air Water or air W
48、ater or air Water or air Water or air Water or air Water or air Water Page 16 EN 10250-4 : 1999 1.4462 1.4362 1.4507 Table A.3: Heat treatment conditions - austenitic-ferritic grades 1 1020 to 1100 950 to 1050 1040 to 1120 Water or air Water or air Water or air Steel designation Name X3CrNiMoN27-5-2
49、 X2CrNiMoN22-5-3 X2CrNiN23-4 XZCrNiMoCuN25-6-3 X2CrNiMoN25 -7 -4 X2CrNiMoCuWN25 -7-5 1.4410 1.4501 1040 to 1120 1040 to 1 120 Water or air Water or air Page 17 EN 10250-4 : 1999 X6CrNi Ti 18-10 X6CrNiNb 18-10 X2CrNiNI 8-10 X2CrNiMoN17-13-3 Annex B (informative) Mechanical properties at low temperatures Properties of certain steels at low temperatures are given in table B. 1. Table B.l: Mechanical properties at low temperatures (typical values) 1.4541 360 1200 40 60 400 1350 35 60 1.4550 360 1200 40 40 400 1350 35 40 1.4311 450 1050 35 60 550 1250 35 60
