1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD AEROSPACE SERIES BS 3S 14
2、5 : 1996 Incorporating Amendment No.1 ICS 49.025.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Specification for Chromium-nickel-copper- molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgings and parts (1270 MPa to 1470 MPa)This British Sta
3、ndard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 May 1996 BSI 1998 First published as BS S 145 February 1969 Second edition August 1976 Third edition May 1996 The following BSI refere
4、nces relate to the work on this standard: Committee reference ACE/15 Draft for comment 94/701802 DC ISBN 0 580 25335 X BS 3S 145 : 1996 Issue 2, February 1998 Amendments issued since publication Amd. No. Date T ext affected 9768 February 1998 Indicated by a sideline in the margin Committee responsib
5、le for this British Standard The preparation of this British Standard was entrusted to T echnical Committee ACE/15, Wrought and cast steels for aerospace, upon which the following bodies were represented: British Forging Industry Association British Industrial Fasteners Federation British Investment
6、 Casting Trade Association British Iron and Steel Producers Association British Steel Industry British Steel Industry (Wire Section) Civil Aviation Authority (Airworthiness Division) Institute of British Foundrymen Ministry of Defence National Association of Steel Stockholders Seamless Steel Tube As
7、sociation Society of British Aerospace Companies Spring Research and Manufacturers Association Stainless Steel Wire Industry Association Steel Casting Research and Trade AssociationIssue 1, February 1998 BS 3S 145 : 1996 BSI 1998 a Summary of pages The following table identifies the current issue of
8、 each page. Issue 1 indicates that a page has been introduced for the first time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement pages indicates the most recent changes (amendment, addition, deletion). Page Issue Page Issue Front cover Inside front
9、 cover a b i ii 2 2 1 blank original 2 1 2 3 4 Inside back cover Back cover 2 2 2 2 original 2b blankBS 3S 145 : 1996 BSI 1996 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 References 1 3 T echnical requirements 1 Tables 1 T echnical requirements for Cr-Ni-Cu-Mo c
10、orrosion resisting steel forging stock and forgings 2 2 T echnical requirements for Cr-Ni-Cu-Mo corrosion resisting steel black bar 3 3 T echnical requirements for Cr-Ni-Cu-Mo corrosion resisting steel bright bar 5 List of references Inside back coverBS 3S 145 : 1996 Issue 2, February 1998 ii BSI 19
11、98 1) In preparation. | | Foreword This British Standard has been prepared by T echnical Committee ACE/15 and includes Amendment A1 : 1998. It is a revision of BS 2S 145 : 1976, which is superseded and withdrawn. The standard has been converted to the AECMA format and conforms to BS EN 4500 1) . The
12、 fully heat treated condition has been added as an option for condition of supply of forgings, black bar and bright bar . The units given in line 20 of the tables for Izod impact strength are ft lbf because Izod testing machines are calibrated in imperial units. Compliance with a British Standard do
13、es not of itself confer immunity from legal obligations. BSI 1996 1 Issue 2, February 1998 BS 3S 145 : 1996 1 Scope This British Standard specifies characteristics of a chromium-nickel-copper-molybdenum corrosion resisting steel supplied in the following forms, and as parts, for general aerospace us
14、e: a) forging stock and billets and bars for subsequent working: softened, designation S145A; b) forgings: solution treated, designation S145C; c) forgings: solution treated and precipitated, designation S145G; d) black bar for machining: solution treated, designation S145B; e) black bar for machini
15、ng: solution treated and precipitated, designation S145F; f) bright bar for machining: solution treated, designation S145D; g) bright bar for machining: solution treated and precipitated, designation S145H. 2 References 2.1 Normative references This British Standard incorporates, by dated or undated
16、 reference, provisions from other publications. These normative references are made at the appropriate places in the text and the cited publications are listed on the inside back page. For dated references, only the edition cited applies; any subsequent amendments to, or revisions of, the cited publ
17、ication apply to this British Standard only when incorporated in the reference by amendment or revision. For undated references, the latest edition of the cited publication applies, together with any amendments. 2.2 Informative references This British Standard refers to other publications that provi
18、de information or guidance. Editions of these publications current at the time of issue of this standard are listed on the inside back page, but reference should be made to the latest editions. | | | 3 Technical requirements 3.1 The technical requirements for material to this standard shall conform
19、to those specified in tables 1, 2 or 3 according to the form. All material supplied shall conform to the requirements appropriate to its dimensions and condition as specified in the standard given in line 5 of the tables. 3.2 Symbols and units shall conform to BS EN 4500-1, BS EN 4500-5, BS 5555 and
20、 BS 5775 : Part 0. 3.3 One sample shall be taken from each ingot for sulfur printing or deep etching tests. 3.4 The material shall be overall dressed. 3.5 Billets and bars and, where practicable, forgings shall be subjected to ultrasonic examination. 3.6 Parts finally heat treated after machining sh
21、all conform to British Standard S100 sections 1 and 7. 3.7 Parts shall be supplied in the fully heat treated condition. NOTE. Material supplied to this standard may, by appropriate heat treatment, be converted to conform to BS S 143 or BS S 144.2 BSI 1998 BS 3S 145 : 1996 Issue 2, February 1998 Tabl
22、e 1. Technical requirements for Cr-Ni-Cu-Mo corrosion resisting steel forging stock and forgings 1 Material designation S145 2 Chemical composition % Element C Si Mn P S Cr Mo Ni Cu Nb Fe min. 13.2 1.20 5.0 1.20 0.10 Base max. 0.07 0.60 1.00 0.035 0.025 14.7 2.00 5.8 2.00 0.40 3 Method of melting Ai
23、r melted by an electric process 4 Form Forging stock and billets Forgings Method of production Wrought or cast Limit dimensions 5 Acceptance standards Sections 1 and 5 of BS S 100 Sections 1 and 6 of BS S 100 6 Condition of supply and heat treatment prior to delivery Softened 6108C# u# 6308C $ 2hA C
24、 1)4) Solution treated 8508C# u# 9508C $ 1hA C 1)3)4) Solution treated 8508C# u# 9508C$ 1hA C 1)3)4) Precipitate 4408C# u# 4608C $hA C 2)4) 7 Condition of use and heat treatment prior to use As condition of supply Condition of supply plus precipitate 4408C # u# 4608C$hA C 2)4) As condition of supply
25、 8 Test piece Heat treatment Sampling Condition of supply Machined or forged test sample (see line 29) Condition of supply Machined or forged test sample (see line 29) As condition of supply 9 Dimensions concerned D e mm # 75 75 # 75 75 # 75 75 11 Direction of sample LLL 12 Tensile Temperature u 8C
26、Ambient temperature 13 Proof stress R p0.2 MPa $ 1030 5) $ 1030 5) $ 1030 5) 14 Strength R m MPa 1270# R m # 1470 1270# R m # 1470 1270# R m # 1470 15 Elongation A % $ 10 $ 10 $ 10 16 Reduction of area Z% 17 Hardness HB # 331 375# HB# 429 # 363 375# HB# 429 375# HB# 429 HV # 350 400# HV# 455 # 380 4
27、00# HV# 455 400# HV# 455 20 Impact Izod ft lbf $ 15 $ 10 $ 15 $ 10 $ 15 $ 10 29 Reference heat treatment Solution treated 8508C# u# 9508C$ 1hA C 1)3)4) Precipitate 4408C# u# 4608C$hA C 2)4) Precipitate 4408C# u# 4608C$hA C 2)4) 97 Designation S145A S145C S145G 98 Notes 1) The tolerance on the chosen
28、 temperatures shall be 108C 2) The tolerance on the chosen temperatures shall be 58C 3) Cool in air to a temperature not exceeding 308C 4) AC = Air cool. 5) The ratio of R p0.2 : R m shall not exceed 0.98BSI 1998 3 Issue 2, February 1998 BS 3S 145 : 1996 | Table 2. Technical requirements for Cr-Ni-C
29、u-Mo corrosion resisting steel black bar 1 Material designation S145 2 Chemical composition % Element C Si Mn P S Cr Mo Ni Cu Nb Fe min. 13.2 1.20 5.0 1.20 0.10 Base max. 0.07 0.60 1.00 0.035 0.025 14.7 2.00 5.8 2.00 0.40 3 Method of melting Air melted by an electric process 4 Form Black bar Method
30、of production Forged or rolled Limit dimensions 5 Acceptance standards Sections 1 and 2 of BS S 100 Sections 1 and 3 of BS S 100 6 Condition of supply and heat treatment prior to delivery Solution treated 8508C# u # 9508C$ 1hA C 1)3)4) Solution treated 8508C# u# 9508C $ 1hA C 1)3)4) Precipitate 4408
31、C# u# 4608C $hA C 2)4)6) 7 Condition of use and heat treatment prior to use Condition of supply plus precipitate 4408C # u# 4608C $hA C 2)4) As condition of supply 8 Test piece Heat treatment Sampling Condition of supply Machined or forged test sample (see line 29) As condition of supply 9 Dimension
32、s concerned D e mm #75 75 #75 75 11 Direction of sample L L 12 Tensile Temperature u 8C Ambient temperature 13 Proof stress R p0.2 MPa $1030 5) $1030 5) 14 Strength R m MPa 1270# R m # 1470 1270# R m # 1470 15 Elongation A %$ 10 $10 16 Reduction of area Z % 17 Hardness HB #363 375# HB# 429 375# HB#
33、429 HV #380 400# HV# 455 400# HV# 455 20 Impact Izod ft lbf $15 $10 $15 $10 29 Reference heat treatment Precipitate 4408C# u# 4608C$hA C 2)4) 97 Designation S145B S145F 98 Notes 1) The tolerance on the chosen temperatures shall be 108C. 2) The tolerance on the chosen temperatures shall be 58C. 3) Co
34、ol in air to a temperature not exceeding 308C. 4) AC = Air cool. 5) The ratio of R p0.2 : R m shall not exceed 0.98. 6) Minor straightening and stress relief shall be permitted after final precipitation. The temperature and time for stress relieving shall not exceed that specified for precipitation.
35、 Test samples shall be taken after completion of all treatments including any stress relief.4 BSI 1998 BS 3S 145 : 1996 Issue 2, February 1998 | Table 3. Technical requirements for Cr-Ni-Cu-Mo corrosion resisting steel bright bar 1 Material designation S145 2 Chemical composition % Element C Si Mn P
36、 S Cr Mo Ni Cu Nb Fe min. 13.2 1.20 5.0 1.20 0.10 Base max. 0.07 0.60 1.00 0.035 0.025 14.7 2.00 5.8 2.00 0.40 3 Method of melting Air melted by an electric process 4 Form Bright bar Method of production Forged or rolled and subsequently machined or ground Limit dimensions 5 Acceptance standards Sec
37、tions 1 and 2 of BS S 100 Sections 1 and 3 of BS S 100 6 Condition of supply and heat treatment prior to delivery Solution treated 8508C# u# 9508C$ 1hA C 1)3)4) Solution treated 8508C# u# 9508C $ 1hA C 1)3)4) Precipitate 4408C# u# 4608C $hA C 2)4)6) 7 Condition of use and heat treatment prior to use
38、 Condition of supply plus precipitate 4408C# u# 4608C$hA C 2)4) As condition of supply 8 Test piece Heat treatment Sampling Condition of supply Machined or forged test sample (see line 29) As condition of supply 9 Dimensions concerned D e mm #75 75 #75 75 11 Direction of sample L L 12 Tensile Temper
39、ature u 8C Ambient temperature 13 Proof stress R p02 MPa $1030 5) $1030 5) 14 Strength R m MPa 1270# R m # 1470 1270# R m # 1470 15 Elongation A %$ 10 $10 16 Reduction of area Z % 17 Hardness HB #363 375# HB# 429 375# HB# 429 #380 400# HV# 455 400# HV# 455 20 Impact Izod ftlbf $15 $10 $15 $10 29 Ref
40、erence heat treatment Precipitate 4408C# u # 4608C$hA C 2)4) 97 Designation S145D S145H 98 Notes 1) The tolerance on the chosen temperatures shall be 108C. 2) The tolerance on the chosen temperatures shall be 58C. 3) Cool in air to a temperature not exceeding 308C. 4) AC = Air cool. 5) The ratio of
41、R p0.2 : R m shall not exceed 0.98. 6) Minor straightening and stress relief shall be permitted after final precipitation. The temperature and time for stress relieving shall not exceed that specified for precipitation. Test samples shall be taken after completion of all treatments including any str
42、ess relief. BSI 1996 BS 3S 145 : 1996 1 ) In preparation. List of references Normative references BSI publications BRITISH STANDARDS INSTITUTION, London BS 5S 100 : 1993 Procedure for inspection, testing and acceptance of wrought steels (other than plate, sheet, strip and tube) BS 5555 : 1993 Specif
43、ication for SI units and recommendations for the use of their multiples and of certain other units BS 5775 Specification for quantities, units and symbols BS 5775 : Part 0 : 1993 General principles BS EN 4500 Metallic materials Rules for drafting and presentation of material standards BS EN 4500 : P
44、art 1 1) General rules BS EN 4500 : Part 2 1) Specific rules for steel Informative references BSI standards publications BRITISH STANDARDS INSTITUTION, London BS 2S 143 : 1976 Specification for chromium-nickel-copper-molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgi
45、ngs and parts (930 1080 MPa) BS 3S 144 : 1995 Specification for chromium-nickel-copper-molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgings and parts (1130 1330 MPa)BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
46、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British S
47、tandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions. It is the c
48、onstant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover.
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