1、BRITISH STANDARD AEROSPACE SERIES BS S 164:2002 Superseding DTD 5082 Incorporating Corrigendum No. 1 1% C h r o m i u m - molybdenum steel billets, bars, forgings and parts. ( 11 50t o130 0MP a: Limiting ruling section 16 mm) (Suitable for welding) ICS 49.025.10; 77.140.01 BS S 164:2002 This British
2、 Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee was published under the authority of the Standards Policy and Strategy Committee on 31 August 2002 BSI 30 October 2002 The following BSI references relate to the work on this British Standard:
3、 Committee reference ACE/15 Draft for comment 01/708321 DC ISBN 0 580 39795 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Sector Policy and Strategy Committee to Technical Committee ACE/15, Wrought and cast steels for Aerospace, upon
4、 which the following bodies were represented. Confederation of British Metalforming Institute of Spring Technology Society of British Aerospace Companies Ltd. Ministry of Defence UK Defence Standardization Cast Metals Federation (CMF) Civil Aviation Authority Airworthiness UK Steel Association Amend
5、ments issued since publication Amd. No. Date Comments 14162 Corrigendum No. 1 30 October 2002 Corrections to Table 1, Table 2 and Table 3BS S 164:2002 BSI 30 October 2002 i Contents Page Committees responsible Inside front cover Foreword ii 1S c o p e 1 2 Normative references 1 3 Technical requireme
6、nts 1 Table 1 Technical requirements for 1% chromium-molybdenum steel forging stock, billets and forgings 2 Table 2 Technical requirements for 1% chromium-molybdenum steel black bars 3 Table 3 Technical requirements for 1% chromium-molybdenum steel bright bars 4 Bibliography 5BS S 164:2002 ii BSI 30
7、 October 2002 Foreword This British Standard has been prepared by Technical Committee ACE/15 under the direction of the Sector Policy and Strategy Committee. It is a conversion of, and supersedes, MOD(PE) Specification DTD 5082, which is withdrawn. The Ministry of Defence rendered all DTD Specificat
8、ions obsolescent in 1999 and will withdraw them in 2003. Steel products of this composition are still required by the UK Aerospace industry, and this British Standard has been created to satisfy that continuing requirement. This British Standard incorporates the technical requirements of MOD(PE) Spe
9、cification DTD 5082, updates the references, and presents the standard in a format compatible with other similar British Standards. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British St
10、andard does not of itself confer immunity from legal obligations. Summary of pages This standard comprises a front cover, an inside front cover, pages i and ii, pages 1 to 5 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.BS S 164:200
11、2 BSI 30 October 2002 1 1 Scope This British Standard specifies the characteristics of a 1 % chromium-molybdenum steel for aerospace applications, supplied in the following forms and as parts, for general aerospace use: a) forging stock and billets and bars for subsequent working: softened, designat
12、ion S 164A; b) forgings: softened, designation S 164C; c) forgings: D e 16 mm, hardened and tempered, designation S 164F; d) black bars for machining: softened, designation S 164B; e) black bars for machining: D e 16 mm, hardened and tempered, designation S 164E; f) bright bars for machining: soften
13、ed and subsequently cold drawn, cold rolled, machined or ground, designation S 164D; g) bright bars for machining: D e 16 mm, hardened and tempered, designation S 164G. 2 Normative references The following referenced documents are indispensable for the application of this document. For undated refer
14、ences, the latest edition of the publication referred to applies. BS 5S 100:1993, Procedure for inspection, testing and acceptance of wrought steels (other than plate, sheet, strip and tube). 1) 3 Technical requirements 3.1 The material in its delivery and use conditions shall comply with Table 1, T
15、able 2, or Table 3 according to form. 3.2 Sulfur printing or deep etch testing shall be carried out in accordance with the latest edition of BS S 100. 3.3 The material shall be overall dressed at a suitable stage in manufacture. 3.4 Bar for machining, delivered in the hardened and tempered condition
16、, which has been subjected to a cold straightening or cold working operation after heat treatment shall be given a stress relieving heat treatment to restore the proof stress. 3.5 The equivalent diameter of parts or other products at final heat treatment shall be equal to, or less than the limiting
17、ruling section of 16 mm. 3.6 Parts finally heat-treated after machining shall conform to the latest edition of BS S 100. 3.7 Parts shall be supplied in the fully heat-treated, hardened and tempered, condition. NOTE The format and symbols of Table 1 are derived from European Standards prEN 4500-1 and
18、 prEN 4500-5 which are published as AECMA prestandards. The presentation is slightly modified to make it compatible with existing British standards. 1) The latest edition of this standard should be used. BS 5S 100:1993 is the latest edition at the time of publication.BS S 164:2002 2 BSI 30 October 2
19、002 Table 1 Technical requirements for 1% chromium-molybdenum steel forging stock, billets and forgings 1 Material designation BS S 164 2C h e m i c a l Composition % Element C Si Mn P S Cr Mo Ni Fe min. 0.18 0.10 0.40 0.80 0.15 Base max. 0.26 0.35 0.80 0.020 0.015 1.20 0.25 0.50 3 Method of melting
20、 Air melted by an electric process 4.1 Form Forging stock and billets for further working Forgings 4.2 Method of production Cast or wrought Forged from forging stock conforming to S 164A 4.3 Limit dimensions mm D e 16 5.1 Technical specification BS S 100 BS S 100 BS S 100 5.2 Dimensional tolerances
21、BS S 100 BS S 100 BS S 100 6.1 Delivery condition Softened Softened Hardened and tempered Heat treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC 7 Use condition Delivery condition Hardened and tempered Delivery condition Heat Treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC Characteristics 8.1 Test sample
22、Condition of supply BS S 100, Section 5. Forged or machined test sample. Condition of supply BS S 100, Section 6 BS S 100, Section 6 8.2 Test piece BS S 100, Section 5 BS S 100, Section 6 BS S 100, Section 6 8.3 Heat treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC Use condition Delivery condition 9 Di
23、mensions concerned mm D e 16 mm D e 16 mm D e 16 mm 11 Direction of test piece L or T L or T L or T 12 T Temperature C Ambient Ambient Ambient 13 Proof stress R p0.2 MPa 880 880 880 14 Strength R m MPa 1 150 R m 1 300 1 150 R m 1 300 1 150 R m 1 300 15 Elongation A % 8 8 8 16 Reduction of area Z% 17
24、 Hardness 241 HB 341 HB 388 360 HV 410 241 HB 341 HB 388 360 HV 410 341 HB 388 360 HV 410 20 Impact strength Izod ft lbf 20 20 20 44 External defects BS S 100, Section 1 BS S 100, Section 1 BS S 100, Section 1 50 Macro and micro-cleanness BS S 100, Section 1 + Annex A BS S 100, Section 1 + Annex A B
25、S S 100, Section 1 + Annex A 61 Internal defects Ultrasonic testing BS S 100, Section 1 + Annex B BS S 100, Section 1 + Annex B BS S 100, Section 1 + Annex B 97 Product and condition designation S 164A S 164C S 164F 98 NotesBS S 164:2002 BSI 30 October 2002 3 Table 2 Technical requirements for 1% ch
26、romium-molybdenum steel black bars 1 Material designation BS S 164 2C h e m i c a l Composition % Element C Si Mn P S Cr Mo Ni Fe min. 0.18 0.10 0.40 0.80 0.15 Base max. 0.26 0.35 0.80 0.020 0.015 1.20 0.25 0.50 3 Method of melting Air melted by an electric process 4.1 Form Black bars 4.2 Method of
27、production Forged or rolled 4.3 Limit dimensions mm D e 16 mm 5.1 Technical specification BS S 100 BS S 100 5.2 Dimensional tolerances BS S 100 BS S 100 6.1 Delivery condition Softened Hardened and tempered Heat treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC 7 Use condition Hardened and tempered Deli
28、very condition Heat Treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC Characteristics 8.1 Test sample Condition of supply BS S 100, Section 2. Forged or machined test sample. BS S 100, Section 3 8.2 Test piece BS S 100, Section 2. BS S 100, Section 3 8.3 Heat treatment Use condition Delivery condition 9
29、 Dimensions concerned mm D e 16 mm D e 16 mm 11 Direction of test piece L L 12 T Temperature C Ambient Ambient Ambient 13 Proof stress R p0.2 MPa 880 880 14 Strength R m MPa 1 150 R m 130 0115 0 R m 130 0 15 Elongation A % 8 8 16 Reduction of area Z% 17 Hardness 241 HB 341 HB 388 360 HV 410 341 HB 3
30、88 360 HV 410 20 Impact strength Izod ft lbf 20 20 44 External defects BS S 100, Section 1 BS S 100, Section 1 50 Macro and micro-cleanness BS S 100, Section 1 + Annex A BS S 100, Section 1 + Annex A 61 Internal defects Ultrasonic testing BS S 100, Section 1 + Annex B BS S 100, Section 1 + Annex B 9
31、7 Product and condition designation S 164B S 164E 98 NotesBS S 164:2002 4 BSI 30 October 2002 Table 3 Technical requirements for 1% chromium-molybdenum steel bright bars 1 Material designation BS S 164 2C h e m i c a l Composition % Element C Si Mn P S Cr Mo Ni Fe min. 0.18 0.10 0.40 0.80 0.15 Base
32、max. 0.26 0.35 0.80 0.020 0.015 1.20 0.25 0.50 3 Method of melting Air melted by an electric process 4.1 Form Bright bars 4.2 Method of production Forged or rolled and subsequently cold drawn, cold rolled, machined or ground 4.3 Limit dimensions mm D e 16 5.1 Technical specification BS S 100 BS S 10
33、0 5.2 Dimensional tolerances BS S 100 BS S 100 6.1 Delivery condition Softened Hardened and tempered Heat treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC 7 Use condition Hardened and tempered Delivery condition Heat Treatment 870 C 940 C/OQ or WQ 450 C 550 C/AC Characteristics 8.1 Test sample Conditio
34、n of supply BS S 100, Section 2. Forged or machined test sample. BS S 100, Section 3 8.2 Test piece BS S 100, Section 2. BS S 100, Section 3 8.3 Heat treatment Use condition Delivery condition 9 Dimensions concerned mm D e 16 mm D e 16 mm 11 Direction of test piece L L 12 T Temperature C Ambient Amb
35、ient Ambient 13 Proof stress R p0.2 MPa 880 880 14 Strength R m MPa 1 150 R m 1 300 1 150 R m 13 00 15 Elongation A % 8 8 16 Reduction of area Z% 17 Hardness 241 HB 341 HB 388 360 HV 410 341 HB 388 360 HV 410 20 Impact strength Izod ft lbf 20 20 44 External defects BS S 100, Section 1 BS S 100, Sect
36、ion 1 50 Macro and micro-cleanness BS S 100, Section 1 + Annex A BS S 100, Section 1 +Annex A 61 Internal defects Ultrasonic testing BS S 100, Section 1 + Annex B BS S 100, Section 1 +Annex B 97 Product and condition designation S 164D S 164G 98 NotesBS S 164:2002 BSI 30 October 2002 5 Bibliography
37、Standards publications prEN 4500-1:1996, Metallic materials Rules for drafting and presentation of material standards Part 1: General rules. prEN 4500-5:1996, Metallic materials Rules for drafting and presentation of material standards Part 5: Specific rules for steels.BS S 164:2002 BSI 389 Chiswick
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