DIN 267-13-2007 Fasteners - Technical specifications - Part 13 Parts for bolted connections with specific mechanical properties for use at temperatures ranging from -200 C to +700 .pdf

1、May 2007DEUTSCHE NORM Translation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Ve

2、rlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 21.060.10!$M,:“1420923www.din.deDDIN 267-13Technical delivery conditions Part 13: Parts for bolt/nut assemblies with specific mechanicalproperties for use at temperatures ranging from 200 C to +700

3、 CMechanische Verbindungselemente Technische Lieferbedingungen Teil 13: Teile fr Schraubenverbindungen mit besonderen mechanischen Eigenschaftenzum Einsatz bei Temperaturen von 200 C bis +700 CSupersedesDIN 267-13:1993-08www.beuth.deDocument comprises 12 pagesFasteners DIN 267-13:2007-05 Contents Pa

4、ge Foreword. 3 1 Scope . 3 2 Normative references . 4 3 Terms and definitions 5 4 Materials and property classes . 5 4.1 Mechanical properties 5 4.2 Loadability of bolt/nut assemblies 7 5 Testing . 11 5.1 General. 11 5.2 Fully loadable bolts 11 5.3 Fully loadable nuts . 11 5.4 Non-fully loadable bol

5、ts . 11 5.5 Non-fully loadable nuts 12 6 Marking 12 7 Designation . 12 2 DIN 267-13:2007-05 Foreword This standard has been prepared by Technical Committee NA 067-02-03 AA Mechanische Eigenschaften fr Schrauben und Muttern aus nichtrostendem und temperaturbestndigem Stahl of the Normenausschuss Mech

6、anische Verbindungselemente (Fasteners Standards Committee). Amendments This standard differs from DIN 267-13:1993-08 as follows: a) The title has been amended. b) The references have been updated. c) The additional requirements for property classes 5.6 and 8.8 for bolts and 5-2 and 8 for nuts for u

7、se at temperatures ranging from 10 C to +300 C have been deleted. d) The material names have been updated. e) Steel grade 42CrMo4 has been included. f) The permitted steel grades as in DIN EN ISO 3506-1 or DIN EN ISO 3506-2 are no longer limited to a given range. g) Copper alloy austenites have been

8、 deleted and austenitic bolts restricted to property classes 50 and 70 in order to exclude the possibility of local high cold-forming. h) Instead of the usual maximum temperatures for continuous service, a reference to the temperature range specified in DIN EN 10269 has been included. i) Requirement

9、s for fully loadable fasteners and test conditions have been specified. j) The range of suitable bolt/nut combinations has been extended. k) For all materials, specifications relating to heat treatment, hardness, and minimum tensile strength of the bolt and the proof load of the nut have been given.

10、 l) In the designation, the material number or the relevant symbol is to be given instead of the material name. m) Acceptance inspection in accordance with DIN EN ISO 3269 and use of the inspection documents complying with DIN EN 10204 are no longer specified. Previous editions DIN 267-13: 1968-07,

11、1980-03, 1993-08 1 Scope This standard specifies material designations and mechanical properties of bolts and nuts with metric screw thread for use at service temperatures ranging from 200 C to +700 C, where requirements are to be met with regard to low temperature toughness and high temperature str

12、ength. This standard supplements the specifications of DIN EN ISO 898-1, DIN EN 20898-2 and DIN EN ISO 898-6 by allowing the use of such fasteners at service temperatures below 50 C and above +150 C. 3 DIN 267-13:2007-05 2 Normative references The following reference documents are indispensable for

13、the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. DIN 267-29, Fasteners Part 29: Product grades for bolt/nut assemblies for service temperatures from 200 C

14、to +700 C DIN 2510-2, Bolted connections with reduced shank Part 2: Metric thread with large clearance Nominal dimensions and limits DIN 2510-3, Bolted connections with reduced shank Part 3: Stud bolts DIN 2510-4, Bolted connections with reduced shank Part 4: Studs DIN 2510-5, Bolted connections wit

15、h reduced shank Part 5: Hexagon nuts DIN 2510-6, Bolted connections with reduced shank Part 6: Cap nuts DIN 2510-7, Bolted connections with reduced shank Part 7: Extension sleeves DIN EN 10269:2006-07, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties D

16、IN EN 20898-2, Mechanical properties of fasteners Part 2: Nuts with specified proof load values; coarse pitch thread DIN EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel Part 1: Bolts, screws and studs DIN EN ISO 898-6, Mechanical properties of fasteners Part 6:

17、Nuts with specified proof load values; fine pitch thread DIN EN ISO 3506-1, Mechanical properties of corrosion-resistant stainless steel fasteners Part 1: Bolts, screws and studs DIN EN ISO 3506-2, Mechanical properties of corrosion-resistant stainless steel fasteners Part 2: Nuts DIN EN ISO 6507-1,

18、 Metallic materials Vickers hardness test Part 1: Test method DIN ISO 272, Fasteners Width across flats for hexagon products ISO 6892, Metallic materials Tensile testing at ambient temperature AD 2000-Merkblatt W 21), Austenitic and austenitic-ferritic steels AD 2000-Merkblatt W 71), Bolts and nuts

19、made from ferritic steel AD 2000-Merkblatt W 101), Materials for low temperatures Ferrous materials TRD 1061), Schrauben und Muttern aus Stahl (Code of practice for steel bolts and nuts) 1)Obtainable from Beuth Verlag GmbH, 10772 Berlin, Germany. 4 DIN 267-13:2007-05 VdTV WB 113/22), Hochwarmfester

20、austenitischer Walz- und Schmiedestahl, X 8 CrNiMoBNb 16 16 + wk Werkstoff-Nr 1.4986 + wk (Unalloyed austenitic rolled and forging steel with elevated temperature properties, of grade X 8 CrNiMoBNb 16 16 + wk Material number 1.4986) VdTV WB 435/32 ), Warmfester austenitischer Walz- und Schmiedestahl

21、 X 5 NiCrTi 26 15 Werkstoff- Nr 1.4980 (Unalloyed austenitic rolled and forging steel with elevated temperature properties, of grade X 5 NiCrTi 26 15 Material number 1.4980) VdTV WB 4902), Schrauben und Muttern aus dem warmfesten Stahl 35 B 2 Werkstoff-Nr 1.5511 (Bolts and nuts of unalloyed steel wi

22、th elevated temperature properties, of grade 35 B 2 Material number 1.5511) 3 Terms and definitions For the purposes of this standard the terms and definitions given in DIN EN 10269, DIN EN 20898-2, DIN EN ISO 898-1, DIN EN ISO 898-6, DIN EN ISO 3506-1 and DIN EN ISO 3506-2 apply. 4 Materials and pr

23、operty classes 4.1 Mechanical properties For austenitic steel fasteners designed for low service temperatures down to 200 C, Table 1 shall apply. The mechanical properties for the relevant steel grade and property class shall be as specified in DIN EN ISO 3506-1 and DIN EN ISO 3506-2. Table 1 Austen

24、itic steels as in DIN EN ISO 3506-1 and DIN EN ISO 3506-2 for low service temperatures Property class Minimum temperature for continuous service(guideline value) Steel gradeaBolt Nut A2L 60 CbA2 50 50 A3 70 200 CcA4L 70 80 A4 A5 NOTE No impairments of fastener reliability when used at higher service

25、 temperatures are known. When used at lower temperatures, the fasteners should be subjected to a suitability test for the intended application. aCopper content 1 % (reduced content compared to that specified in DIN EN ISO 3506-1 and -2). bApplies to bolts with head. cApplies to headless bolts. 2)Obt

26、ainable from Verlag TV Rheinland GmbH, Postfach 10 17 50, 50672 Kln, Germany. 5 DIN 267-13:2007-05 Table 2 shall apply for steel and nickel alloy fasteners designed for high service temperatures up to +700 C. The mechanical properties for the relevant heat treatment condition shall be as specified i

27、n DIN EN 10269:2006-07, Table 4. The selection of the material grade required for the intended application may be based on the values specified in DIN EN 10269:2006-07 for the 0,2 % proof strength at elevated temperatures (Table 5), the creep strength (Table C.1) and the relaxation properties (Table

28、 D.1). Where additional requirements are to be met, these shall be agreed when ordering. Relevant in this connection are the specifications given in AD 2000-Merkbltter W 2, W 7 and W 10, in VdTV-Werkstoffbltter WB 113/2, WB 435/3 and WB 490 or in the Technische Regel fr Dampfkessel (Code of practice

29、 for steam boilers) TRD 106, or the requirement that a particular austenitic material is to be used. Table 2 Steels and nickel alloys as in DIN EN 10269 for high and low service temperatures Temperature ranges from DIN EN 10269 Material Hardness HV of bolt and/or nut min. Short-term serviceamax. Lon

30、g-term servicebmax. symbol number name conditioncmin. max. + NT 157 203 120 C KB 1.5680 X12Ni5 + QT 173 235 400 C 500 C Yd1.1181 C35E + N 150 200 400 C 500 C YK 1.1181 C35E + QT 165 210 400 C YB 1.5511 35B2g+ QT 165 210 60 C 500 C 550 C KG 1.7218 25CrMo4 + QT 195 240 100 C 500 C GC 1.7225 42CrMo4 +

31、QT 275 337 500 C 550 C GA 1.7709 21CrMoV5-7 + QT 225 272 600 C 550 C GB 1.7711 40CrMoV4 6 + QT 272 320 550 C 600 C Ve1.4923 X22CrMoV12-1 + QT 1e256 303 550 C 600 C VHf1.4923 X22CrMoV12-1 + QT 2f287 367 600 C 600 C VW 1.4913 X19CrMoNbVN11-1 + QT 287 367 650 C 670 C S 1.4986 X7CrNiMoBNb16-16 + WW + P

32、210 272 196 C 650 C 650 C SD 1.4980 X6NiCrTiMoVB25-15-2 + AT + P 287 367 196 C 650 C 800 C SB 2.4952 NiCr20TiAl + AT + P 320 417 aMaximum temperatures with specified proof strengths and tensile strengths. bMaximum temperatures with specified creep strengths and creep rupture strengths. cHeat treatme

33、nt condition as defined in DIN EN 10269:2006-07, Table 4: + N: normalized + NT: normalized and tempered + QT: quenched and tempered + WW: warm worked + AT: solution annealed + P: precipitation hardened dApplies only to nuts. eSymbol V denotes grade X22CrMoV12-1 as in DIN EN 10269 with a 0,2 % proof

34、strength Rp 0,2 600 N/mm2(+QT 1). fSymbol VH denotes grade X22CrMoV12-1 as in DIN EN 10269 with a 0,2 % proof strength Rp 0,2 700 N/mm2(+ QT 2). gSee also VdTV-Werkstoffblatt WB 490. 6 DIN 267-13:2007-05 4.2 Loadability of bolt/nut assemblies 4.2.1 General A bolt/nut assembly complying with this sta

35、ndard is only fully loadable if the mating bolt and nut themselves are fully loadable, i.e. the nut corresponds to at least type 1 for coarse pitch threads and at least type 2 for fine pitch threads; the thread tolerance positions are compatible, e.g. 6g/6H3 ), and the tensile strength of the nut ma

36、terial is more than 70 % of that of the bolt material. Examples of bolt/nut material combinations that have proved suitable are given in Table 3. NOTE If extension sleeves are used in bolt/nut assemblies with the materals in Table 3, the same material should preferably be used for both screw and ext

37、ension sleeve. 4.2.2 Fully loadable bolts According to this standard a bolt is deemed fully loadable, if failure occurs after the minimum failure load Rm, min As, minaccording to Table 4 or Table 5 has been reached in a tensile test on the complete bolt and for bolts as in Table 2, when tested accor

38、ding to DIN EN ISO 898-1, this failure occurs in the free threaded length subject to the load or for bolts as in Table 1, when tested according to DIN EN ISO 3506-1, this failure occurs in the free threaded length or the shank subject to the load. . 4.2.3 Fully loadable nuts According to this standa

39、rd, nuts are deemed fully loadable if they withstand the proof load, equal to the minimum failure load Rm, min As, Nennof the bolt as in Table 4 or Table 5 and the external diameter of a round nut or the width across flats of a hexagon nut is at least equal to the width across flats as in DIN ISO 27

40、2 and the height of the nut is at least type 1 for coarse pitch thread and at least type 2 for fine pitch thread. 3)Bolt/nut assemblies consisting of components complying with DIN 2510-3 to DIN 2510-7 are not fully loadable due to their waisted shank. To take this into account, tolerances on the thr

41、ead shall, instead, be as specified DIN 2510-2. 7 DIN 267-13:2007-05 Table 3 Suitable combinations of bolt and nut Bolt Nut Austenitic steels property class Steels and nickel alloys Test stressaSpN/mm250 70 KB YK YB KG GA GB GC V VH VW S SD SB Coarse pitch threadmin. type 1Fine pitch threadmin. type

42、 2 50 629b725b70 800b875bAustenitic steels property class 80 886b950bKB 654 748Y 714 800YK 714 800YB 714 800KG 800 875GA 937 995GB 937 995GC 937 995V 971 1 025VH 971 1 025VW 971 1 025S 775 838SD 971 1 025Nut Steels and nickel alloys SB 1 057 1 100max. 710 650 650 750 850 1 0001 060 950 1 0501 050 85

43、0 1 1501 300 Bolt TensilestrengthRmN/mm2min. 500 700 530 500 500 600 700 850 860 800 900 900 650 900 1 000 Key Preferred combination Permitted combination Not recommended aThe test stress specified takes into account the fact that the hardness of the test mandrel used in the proof load test is great

44、er than the hardness of the bolts with which the nuts are combined. As a result, the test stress is always higher than the highest minimum tensile strength of the bolt recommended for use in the combination. bThe test stresses given here are higher than those specified in DIN EN ISO 3506-2 in order

45、to identify fully loadable nuts in the proof load test. While nuts of property classes 70 and 80 to DIN EN ISO 3506-2 with small diameters produced in large batches are usually cold-formed and property class 50 is only supplied hot-formed for larger diameters, special nuts to DIN 267-13 are required

46、 to be machined from steel bars when produced in small batches. As these bars obtain their strength through strain-hardening (drawing), with the result that their mechanical properties are not uniform over their cross section, there is a risk that the nuts manufactured from such bars will achieve th

47、e low test stress in the proof load test to DIN EN ISO 3506-2 using a hardened mandrel, but that they will fail before the minimum failure load is reached when they are combined with a softer bolt. For this reason, it has been deemed necessary to specify higher test stresses. 8 DIN 267-13:2007-05 Table 4a Minimum failure loads for bolts with coarse pitch thread (As, Nenn Rm, minin kN) Austenitic steels of property class Steels and nickel alloys Thread d Stress area As, Nenn50 70 KB