1、BRITISH STANDARD AEROSPACE SERIES BS 2F 132:2002 (Superseding BS F 132:1987) Braided nylon cord with specified dimensional stability for aerospace purposes ICS 49.025.40 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS 2F 132:2002 This British Standard, having been prepared u
2、nder the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Sector Policy and Strategy Committee on 11 July 2002 BSI 11 July 2002 BS F 132: December 1987 The following BSI references relate to work on this British Standard: Committee reference
3、 ACE/22 Draft for comment 00/706658 DC ISBN 0 580 39823 4 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/22, Cords, ropes and sewing threads for aerospace purposes, upon which the following bodies were represented: L
4、inen Sewing Thread Manufacturers Association Ministry of Defence UK Defence Standardization Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBS 2F 132:2002 BSI 11 July 2002 i Contents Page Committees responsible Inside front cover Foreword ii 1S c
5、 o p e 1 2 General requirements 1 3Y a r n 1 4 Construction and properties 2 5 Finish 2 6 Identification 2 Annex A Method for determination of shrinkage in water at 55 C7 Publications referred to Inside back cover Figure 1 Braid interlacing 6 Table 1 General requirements (given in BS F 100) 1 Table
6、2 Yarn properties 1 Table 3 Cord construction and properties of cords CA: nominal 78 dtex (34 filaments) nylon 3 Table 4 Cord construction and properties of cords CB: nominal 235 dtex (34 filaments) nylon 3 Table 5 Cord construction and properties of cords CC: nominal 940 dtex (140 filaments) nylon
7、4 Table 6 Cord construction and properties of cords SA: nominal 78 dtex (34 filaments) nylon 4 Table 7 Cord construction and properties of cords SB: nominal 235 dtex (34 filaments) nylon 5 Table 8 Cord construction and properties of cords SC: nominal 940 dtex (140 filaments) nylon 5BS 2F 132:2002 ii
8、 BSI 11 July 2002 Foreword This British Standard, prepared under the direction of Technical Committee ACE/22, Cords, ropes and sewing threads for aerospace purposes, is one of a series for textiles of a quality suitable for aerospace purposes. This British Standard supersedes BS F 132:1987 which is
9、withdrawn. This new edition incorporates technical changes but it does not reflect a full review or revision of the standard, which will be undertaken in due course. This standard specifies requirements for braided nylon cord with specified dimensional stability manufactured from twist set yarn, as
10、previously defined in Ministry of Defence DTD Specification 5620, which this standard replaces. It differs from DTD Specification 5620 primarily in that prestabilized yarns are now permitted. Braided nylon cord with unspecified dimensional stability, manufactured from non-twist set yarn and/or twist
11、 set yarn, as previously defined in Ministry of Defence DTD Specification 5620, is specified in BS F 135. This new edition incorporates all earlier amendments, updates references to other standards, revises the reference to BS F 100 and improves nomenclature in line with other standards. The quality
12、 assurance authority referred to in this standard is as stated in the contract or order, or the accredited representative of the authority stated, as instructed by the prime contractor. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for
13、 its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 8, an inside back cover and a back cover. The BSI copyright notice display
14、ed in this document indicates when the document was last issued.BS 2F 132:2002 BSI 11 July 2002 1 1 Scope This British Standard specifies requirements for braided nylon cord with specified dimensional stability, manufactured from twist set yarn for aerospace purposes. NOTE 1 The titles of the public
15、ations referred to in this standard are listed on the inside back cover. NOTE 2 The latest revision of an Aerospace Series standard is indicated by a prefix number. 2 General requirements In addition to the requirements specified in clauses 3, 4, 5 and 6 of this standard, the requirements and tests
16、of the latest edition of BS F 100 as specified in Table 1 shall apply. Table 1 General requirements (given in BS F 100) 3 Yarn 3.1 The cord shall be manufactured from continuous filament bright nylon 6.6 yarns, which shall have the tenacity and extension at break as given in Table 2. Table 2 Yarn pr
17、operties 3.2 The yarn shall conform to the properties given in Table 2 to the satisfaction of the quality assurance authority when assessment is based on the manufacturers quality control procedures. NOTE In case of dispute, the tenacity and extension at break shall be determined by the method of te
18、st and sampling given in BS EN ISO 2062:1995 and BS EN ISO 2060:1995, option 1. 3.3 The yarn shall not be sized. Section of BS F 100 Section title Requirements and tests 1 General All requirements. 2 a Quality requirements Requirements for manufacture of cordage only. Requirements for dyed textiles
19、except those related to fabric intended for coating. Requirements for dimensions and tolerances of length of cordage except those relating to laid ropes. Requirements for freedom from corrosive impurities (see Section 4 of BS F 100). Requirements for freedom from faults of braided cordage only. 3 Ph
20、ysical tests Tests for the determination of the mass of cordage. Tests for breaking strength of cordage. Tests for sheath slackness and core looping of braided cordage. Tests for plaits per unit length in braided cordage. 4 Chemical tests If required by Section 2: test for conductivity of aqueous ex
21、tract; test for pH value of aqueous extract; test for water-soluble chloride; test for water-soluble sulfate. a It is not intended that Section 2 tests should be performed on each batch. The frequency of these tests should be agreed between the quality assurance authority and the cordage manufacture
22、r. Nominal dtex 78 235 940 Nominal number of filaments 34 34 140 Tenacity (cN/tex) 68 to 75 68 to 77 71 to 82 Extension at break (%) 13 to 18 13 to 20 13 to 22BS 2F 132:2002 2 BSI 11 July 2002 4 Construction and properties 4.1 General 4.1.1 The cords shall be braided from yarns which conform to the
23、relevant requirements of Table 2, Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8. 4.1.2 The construction and properties of the finished cords shall conform to Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8, 4.2, 4.3, 4.4, clause 5 and clause 6. 4.2 Dimensional stability 4.2.1 Unsta
24、bilized yarns shall be subjected to a setting treatment after twisting and prior to braiding. NOTE 1 The purpose of the setting treatment is to ensure the production of cords with consistent dimensional stability. Setting may be carried out by means of steam or dry heat provided the finished cord co
25、nforms to 4.2.5. NOTE 2 Prestabilized yarns may require a setting treatment after twisting in order to conform to BS F 100 for twist liveliness. 4.2.2 Unstabilized and prestabilized yarns shall not be used in the same cord. 4.2.3 Cord SB 603 shall be made from yarns which have been heat set after tw
26、isting. 4.2.4 The cord shall not be set after braiding. 4.2.5 The shrinkage of the finished cords in water shall not be greater than 3.0 % when measured in accordance with Annex A. 4.3 Identification threads All cords shall contain coloured threads in the sheath to denote dimensionally stable cords,
27、 the colour being indicated in a footnote to Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8. Coloured identification threads shall consist of whole ends which are part of the cord construction specified in Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8. 4.4 Sheath slackness and cor
28、e looping Finished cords constructed as given in Table 3, Table 4 and Table 5 shall exhibit a maximum of 3 mm sheath slackness, and shall be free from core looping. 5 Finish 5.1 General The cord shall be supplied in one of the following conditions: a) undyed; or b) dyed. NOTE When dyed cord is requi
29、red, an increase in the mass per unit length of 10 % over that specified in Table 3, Table 4, Table 5, Table 6, Table 7 and Table 8 is permitted. 5.2 Dyeing 5.2.1 Where dyeing is required, the colour shall be specified by reference to a British Standard, e.g. BS 381C, or otherwise by pattern. 5.2.2
30、Where dyeing is required, the yarns from which the cord is manufactured shall be dyed. Dyeing of the cord shall not be permitted after manufacture. 6 Identification Cords shall be identified, for ordering purposes, by the number of this British Standard, i.e. BS 2F 132 1) , together with the cord de
31、signation and, if required dyed, the colour. NOTE This identification may be codified. For example, cord CA 102, required dyed NATO green, may be identified as BS 2F 132/CA 102/BS 381C No. 285. 1) Marking BS 2F 132 on or in relation to a product represents a manufacturers declaration of conformity,
32、i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity, which may
33、also be desirable.BS 2F 132:2002 BSI 11 July 2002 3 Table 3 Cord construction and properties of cords CA: nominal 78 dtex (34 filaments) nylon Table 4 Cord construction and properties of cords CB: nominal 235 dtex (34 filaments) nylon Designation Sheath Core Cord designation Maximum mass per unit le
34、ngth Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) No. of ends Construction of each end Twist (first time) Twist (second time) g/m N dtex turns/m turns/m dt
35、ex turns/m turns/m CA 101 0.9 310 8 + 8 8 + 8 78 5 240 (Z) 950 80 A 2 78 5 240 (Z) CA 102 1.8 445 8 + 8 16 + 16 78 5 240 (Z) 950 80 A 1 78 5 3 310 (S) 240 (Z) CA 103 3.7 1 350 8 + 8 8 + 8 78 5 3 310 (S) 240 (Z) 690 40 A 3 78 10 3 310 (S) 240 (Z) CA 104 5.5 1 800 8 + 8 16 + 16 78 4 3 310 (S) 240 (Z)
36、470 40 A 4 78 10 3 310 (S) 240 (Z) CA 105 7.1 2 450 8 + 8 16 + 16 78 5 3 310 (S) 240 (Z) 470 40 A 4 78 13 3 310 (S) 240 (Z) CA 106 9.9 3 100 8 + 8 24 + 24 78 5 3 310 (S) 240 (Z) 390 40 A 4 78 13 3 310 (S) 240 (Z) All cords shall have green marker thread in sheath (BS 381C:228 emerald green). NOTE Tw
37、ist tolerances: first time 10 %; second time 15 %. Designation Sheath Core Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see
38、 Figure 1) No. of ends Construction of each end Twist (first time) Twist (second time) g/m N dtex turns/m turns/m dtex turns/m turns/m CB 201 2.5 890 8 + 8 16 + 16 235 2 310 (Z) 670 80 A 2 235 3 3 280 (S) 200 (Z) CB 202 3.8 1 350 8 + 8 8 + 8 235 3 2 280 (S) 200 (Z) 670 80 A 3 235 3 3 280 (S) 200 (Z)
39、 CB 203 5.5 1 800 8 + 8 8 + 8 235 3 3 280 (S) 200 (Z) 470 40 A 4 235 3 3 280 (S) 200 (Z) CB 204 11 3 100 8 + 8 16 + 16 235 3 3 280 (S) 200 (Z) 430 40 A 4 235 6 3 280 (S) 200 (Z) CB 205 17 5 350 8 + 8 24 + 24 235 3 3 280 (S) 200 (Z) 280 40 A 6 235 6 3 280 (S) 200 (Z) All cords shall have black marker
40、 thread in sheath. NOTE Twist tolerances: first time 10 %; second time 15 %.BS 2F 132:2002 4 BSI 11 July 2002 Table 5 Cord construction and properties of cords CC: nominal 940 dtex (140 filaments) nylon Table 6 Cord construction and properties of cords SA: nominal 78 dtex (34 filaments) nylon Design
41、ation Sheath Core Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) No. of ends Construction of each end Twist (fi
42、rst time) Twist (second time) g/m N dtex turns/m turns/m dtex turns/m turns/m CC 302 4.6 2 000 8 + 8 16 + 16 940 110 (Z) 440 40 A 2 9404 150 (Z) CC 303 7.1 2 200 8 + 8 8 + 16 940 1 2 240 (S) 160 (Z) 470 40 B 4 940 1 3 240 (S) 160 (Z) CC 305 11.5 4 000 12 + 12 12 + 24 940 1 2 240 (S) 160 (Z) 470 40 B
43、 8 940 1 3 240 (S) 160 (Z) All cords shall have orange marker thread in sheath (BS 381C:557 light orange). NOTE Twist tolerances: first time 10 %; second time 15 %. Designation Sheath Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number o
44、f ends Construction of each end Twist Plaits/m Cord interlacing diagram (see Figure 1) g/m N dtex turns/m SA 501 0.60 220 8 + 8 8 + 8 78 4 240 (Z) 950 80 A Cord SA 501 shall have green marker thread in sheath (BS 381C:228 emerald green). NOTE Twist tolerance: 10 %.BS 2F 132:2002 BSI 11 July 2002 5 T
45、able 7 Cord construction and properties of cords SB: nominal 235 dtex (34 filaments) nylon Table 8 Cord construction and properties of cords SC: nominal 940 dtex (140 filaments) nylon Designation Sheath Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on bra
46、ider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interlacing diagram (see Figure 1) g/m N dtex turns/m turns/m SB 603 1.9 670 a 8 + 8 8 + 8 235 3 and 235 4 alternate ends 180 (S) 1 030 80 A SB 604 14 3 300 8 + 8 16 + 16 235 4 3 240 (S) 180 (Z) 4
47、30 40 A SB 605 20 5 350 8 + 8 24 + 24 235 4 3 240 (S) 180 (Z) 310 40 A SB 606 33 7 800 4 + 4 12 + 12 235 10 4 180 (S) 100 (Z) 120 10 C SB 607 24 6 650 24 + 24 24 + 24 235 5 3 310 (S) 200 (Z) 350 40 A All cords shall have black marker thread in sheath. NOTE Twist tolerances: first time 10 %; second t
48、ime 15 %. a The breaking strength of cord SB 603 shall not exceed 800 N. Designation Sheath Cord designation Maximum mass per unit length Minimum breaking strength Number of spindles on braider Total number of ends Construction of each end Twist (first time) Twist (second time) Plaits/m Cord interla
49、cing diagram (see Figure 1) g/m N dtex turns/m turns/m SC 701 a 9.0 3 350 8 + 8 8 (S) + 8 (Z) 940 4 and 940 5 120 (S) 120 (Z) 3 7 0 4 0A SC 702 16 6 500 8 + 8 8 + 8 940 8 110 (Z) 300 40 A SC 704 b 66 15 600 4 + 4 16 + 16 940 5 3 90 (Z) 50 (S) 90 10 C SC 705 62 17 800 12 + 12 12 (S) + 940 6 3 90 (S) 80 (Z) 200 40 A 12 (Z) 940 6 3 90 (Z) 80 (S) All cords shall have orange marker thread i
