1、 The following commercial specification is adopted from the military document. Revision A includes all known accepted revisions, amendments, notices, and Department of Defense (DoD) engineering changes previously developed for this item. Revision B and forward include changes adopted to reflect tech
2、nology and design evolution. CORD, FIBROUS, NYLON The Parachute Industry Association makes this document available for use by Industry and Government organizations that wish to apply this specification to their products. 1. SCOPE 1.1 Scope. This specification covers braided nylon cord. 1.2 Classific
3、ation. The braided cord shall be of the type specified (see TABLE I and 6.1). A part or identifying number for the cord shall be as specified in 6.4 and be applicable to TABLE I. After treated cordage shall be of the following class as specified (see 6.1): Class F Fluorocarbon Impregnated. 2. APPLIC
4、ABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in Sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification nor is it recommended for additional information or as examples. While every effort has been
5、 made to ensure the completeness of this list, documents users are cautioned that they must meet all specified requirements documents cited in Sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government publications. 2.2.1 Government publications. The following Government
6、publications form a part of this document. STANDARDS FEDERAL FED-STD-595 - Colors used in Government Procurement FED-STD-595/34094 - Camouflage Green 483 FED-STD-595/24165 - Foliage Green 504 FED-STD-595/20180 - Tan 499 PIA-C-5040F 29 June 2015 Superseding PIA-C-5040E 28 February 2010 DISTRIBUTION S
7、TATEMENT: All Rights Reserved. No Part of this publication may be reproduced without prior written permission from the Parachute Industry Association. Additional copies may be purchased on-line from PIA Specifications and Products: . Copyright Protected: Do Not Copy!PIA-C-5040F Page 2 of 18 (Unless
8、otherwise indicated, copies of the above standard are available from the DLA Document Services, Building 4/D, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094. Electronic copies of Federal Standards may be obtained from https:/assist.daps.dla.mil/quicksearch/.) FEDERAL TRADE COMMISSION (
9、FTC) 16 CFR 303 - Rules and Regulations Under the Textile Fiber Products Identification Act (Copies are available online at: www.ftc.gov or from the Federal Trade Commission, 600 Pennsylvania Avenue, N.W. Washington, DC 20580-0001. Electronic copies may also be obtained from http:/www.access.gpo.gov
10、/.) 2.3 Non-government publications. The following documents form a part of this document. AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling Procedures and Tables for Inspection by Attributes (Copies are available online at: www.asq.org or from the American Society for Quality, 600 North P
11、lankinton Avenue, Milwaukee, WI 53203. Electronic copies may also be obtained from www.access.gpo.gov/.) ASTM INTERNATIONAL (ASTM) ASTM D276 - Standard Test Methods for Identification of Fibers in Textiles ASTM D1422 - Standard Test Method for Twist in Single Spun Yarns by the Untwist-Retwist Method
12、 ASTM D1423 - Standard Test Method for Twist in Yarns by Direct-Counting ASTM D1776 - Standard Practice for Conditioning and Testing Textiles ASTM G151 - Standard Practice for Exposing Nonmetallic Materials in Accelerated Test Devices that Use Laboratory Light Sources ASTM G155 - Standard Practice f
13、or Operating Xenon Arc Light Apparatus for Exposure of Non-Metallic Materials (Application for copies should be addressed to the ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Electronic copies may be obtained from www.astm.org.) AMERICAN ASSOCIATION OF TEXTILE CHEMISTS
14、 AND COLORISTS (AATCC) AATCC 16.2 - Colorfastness to Light: Carbon-Arc AATCC 16.3 - Colorfastness to Light: Xenon-Arc AATCC 20A - Fiber Analysis: Quantitative AATCC 61 - Colorfastness to Laundering: Accelerated Copyright Protected: Do Not Copy!PIA-C-5040F Page 3 of 18 AATCC 81 - pH of the Water-Extr
15、act from Wet Processed Textiles AATCC 132 - Colorfastness to Drycleaning AATCC 192 - Weather Resistance of Textiles: Sunshine-Arc Lamp Exposure with and without Wetting AATCC Evaluation Procedures: - 1 Gray Scale for Color Change - 2 Gray Scale for Staining - 8 AATCC 9-Step Chromatic Transference Sc
16、ale - 9 Visual Assessment of Color Difference of Textiles (Applications for copies should be addressed to the AATCC National Headquarters, P.O. Box 12215, Research Triangle Park, NC 27709-2215. Electronic copies may be obtained from www.aatcc.org.) PARACHUTE INDUSTRY ASSOCIATION (PIA) PIA-STD-905 -
17、IDENTIFICATION: NYLON CORD MANUFACTURERS COLOR CODE PIA-TEST METHOD-3000 - PERCENT SOLIDS ADD-ON FOR CORD, NYLON, CLASS F, DETERMINATION OF PIA-TEST METHOD-6004 - LENGTH PER UNIT WEIGHT; CORDAGE PIA-TEST METHOD-6016 - STRENGTH AND ELONGATION BREAKING OF CORDAGE; NON-SPLICED METHOD (Electronic copies
18、 may be obtained from .) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws
19、and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Government and supply purchases. The requirements specified in 3.12 and 3.13 apply only to cord purchased directly by the Government. All other requirements apply to cord purchased by a contractor as a component for a
20、n end item and to cord purchased directly by the Government. 3.2 Standard. The cord shall match the standard for shade and appearance, and shall, unless otherwise indicated, be equal to or better than the standard with respect to all characteristics for which the standard is referenced (see 6.2). 3.
21、2.1 First article. When specified (see 6.1), a sample representative of production quality shall be submitted for first article inspection in accordance with 4.2. Copyright Protected: Do Not Copy!PIA-C-5040F Page 4 of 18 3.3 Materials. The nylon yarn in the manufacture of the cord shall be a bright,
22、 high- tenacity, light-resistant, and heat-resistant polyamide prepared from hexamethylene diamine and adipic acid or its derivatives. It shall have a minimum melting point of 244C (471 F) when tested as specified in 4.3.1. The plied yarns shall be twisted only from the deniers specified in TABLE I.
23、 It is encouraged that recycled material be used when practical as long as it meets the requirements of this specification. 3.3.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible,
24、provided that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4 Processing of yarns. 3.4.1 Core yarns. The core yarns shall be wet shrunk for a minimum of 60 minutes at a temperature of 93 3C (200 5 F), after whic
25、h they shall be dried at a temperature not exceeding 93C (200 F ) before manufacture of the core (see 4.3.2). No oil shall be added to this yarn. 3.4.2 Sleeve yarns. Sleeve yarns shall be wet shrunk for a minimum of 30 minutes at a temperature of 713C (160 5F), after which they shall be dried at a t
26、emperature not exceeding 71C (160F) before braiding (see 4.3.2). No oil shall be added to this yarn. 3.4.3 Stretching. The yarns used to manufacture the cord shall not be subjected to a stretching operation (see 4.3.2). 3.5 Bleaching. The yarn or the fabricated cord shall not be subjected to any typ
27、e of bleaching process. 3.6 Construction and physical requirements. The fabricated cord shall conform to the applicable requirements specified in TABLES I and II and the following paragraphs for the respective Types when tested as specified in 4.3.1 and 4.3.4. (THIS SPACE LEFT INTENTIONALLY BLANK) C
28、opyright Protected: Do Not Copy!PIA-C-5040F Page 5 of 18 TABLE I Construction. Dash number Type Yarns (denier/ply) Twist (turns/inch) Number of core ends Picks per inch Number of carriers and ends per carrier Single yarn/initial Plied yarn/final -1 I Core 210/3 7.0-9.5 5-7 4-7 - - Sleeve 70/3 20-24.
29、0 15-19 - 26-28 32/1 or 16/2 -2 IA Core - - - - - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 16/1 -3 II Core 1050/3 1/ 10-16 6-8 5 - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 32/1 or 36/1 -4 IIA Core - - - - - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 32/1 or 36/1 -5 III Core 1050/3 1/ 10-16 6-8 7-9 - - Sleeve 210/3 7.0-
30、9.5 5-7 - 26-28 32/1 or 36/1 -6 IV Core 1050/3 1/ 10-16 6-8 11 - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 32/1, 36/1 or 44/1 -7 II Class F 2/ Core 1050/3 1/ 10-16 6-8 5 - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 32/1 or 36/1 -8 IIA Class F 2/Core - - - - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 32/1 or 36/1 -9 III Cl
31、ass F 2/Core 1050/3 1/ 10-16 6-8 7-9 - - Sleeve 210/3 7.0-9.5 5-7 - 26-28 32/1 or 36/1 Notes: 1/As an option, five 210 denier yarns can be plied together for the singles/initial twist to result in a 1050 denier yarn. Three of these yarns will be plied together for the final/plied twist to result in
32、a final core size of 3150 denier. 2/Class F - Fluorocarbon impregnated (see 1.2). (THIS SPACE LEFT INTENTIONALLY BLANK) Copyright Protected: Do Not Copy!PIA-C-5040F Page 6 of 18 TABLE II Physical requirements. 3.6.1 Lapping of the core ends. Lapping of the core ends or a sewn overlap where two core
33、yarns are held together by the wrapping of thread around them is permissible, providing the overlap is more than 5 inches but does not exceed 10 inches in length. Splicing or knotting of the core lines is not permissible (see 6.3). The minimum distance between a core end overlap or any adjacent core
34、 end overlap shall be 100 feet. 3.6.1.1 Protruding core ends. When any core end projects through the sleeve as a result of overlapping (see 3.6.1 and 6.3), the end(s) shall be cut flush with the surface of the sleeve with the cord in a relaxed condition. CAUTION: Do not hot knife the end(s) and be e
35、xtremely careful not to damage the sleeve. 3.6.2 Extractable matter (water-soluble material). No material shall be added for the purpose of weighing the cord. The water-soluble material of the cord shall not exceed 2.0 percent when tested as specified in 4.3.4. 3.6.2.1 pH. The pH of the water extrac
36、t of the finished cord shall not be lower than 5.5 or higher than 9.0 when tested as specified in TABLE VII. 3.6.3 Nonfibrous materials. 3.6.3.1 Fluorocarbon treatment. The fluorocarbon is to be evenly distributed throughout the treated cordage (Class F). The percent solid add-on for Types II, IIA a
37、nd III, Class F, Cord, Fibrous, Nylon shall be 5 2 percent by weight when tested as specified in 4.3.4. The fluorocarbon shall be applied from a water dispersion, and when dried, shall form a coating that is evenly deposited and adhered on the yarns of the braided cord. The finish application proces
38、s shall have no detrimental effect to the physical or chemical properties of the cord. Only approved fluorocarbon shall be used (see 6.5). 3.7 Resistance to light and heat. The nylon cord shall lose not more than 15 percent of its original breaking strength after exposure to light and heat when test
39、ed as specified in 4.3.4. 3.8 Color. The color of the cord and referenced color shall be specified in the contract, purchase order or procurement document (see 6.1). When colored cord is specified, the color shall be obtained by yarn dyeing. Color matching is required prior to fluorocarbon applicati
40、on. Characteristic Type I Type IA Type II Type IIA Type III Type IV Breaking strength (pounds), minimum 95 100 400 225 550 750 Elongation (percent), minimum 30 30 30 30 30 30 Length per pound of cord (feet), minimum 950 1050 260 495 225 165 Length per pound of cord with Fluorocarbon treatment (feet)
41、, minimum - - 240 460 208 - Copyright Protected: Do Not Copy!PIA-C-5040F Page 7 of 18 3.8.1 Visual shade matching. When evaluated in accordance with 4.4.5, the color of the dyed cord shall match the standard with sources simulating artificial daylight and shall be a good match to the standard sample
42、 under incandescent lamplight. 3.8.2 Colorfastness to light. PIA has adopted AATCC 16.3 as an acceptable alternative test method to AATCC 16.2 for the testing of Narrow Fabrics using Xenon (see TABLE V). 3.8.3 Colorfastness. When tested as specified in 4.3.4, the dyed cord shall show fastness to lig
43、ht and laundering as follows: Characteristic Rating, Minimum Light (fade ) 1/3-4 Laundering: Color Change 1/Staining 2/3-4 3-4 Dry cleaning 1/3-4 Notes: 1/ Rated using the AATCC Evaluation Procedure 1, Gray Scale for Color Change 2/ Rated using the AATCC Evaluation Procedure 2, Gray Scale for Staini
44、ng. 3.9 Manufacturers identification. Manufacturers identification yarns (color-codes) shall be dyed yarns of the assigned colors designated in PIA-STD-905 and shall have the same colorfastness properties as described in 3.8.2. 3.9.1 Types I, II, III, and IV cord. Each manufacturer shall include in
45、the cores of Types I, II, III and IV cord dyed yarns of the assigned colors that will identify their product. The color identification yarns shall be incorporated into a single core end. If a manufacturers color code consists of three different colors, one core end shall contain all three of these c
46、olors, one color per ply. 3.9.2 Types IA and IIA cord. Each manufacturer shall include, in the sleeve of Type IA and Type IIA cord, yarns of the assigned colors that will identify their product. 3.10 Type identification. Type II cord shall be identified by one black yarn braided into the sleeve (or
47、cover). The colored marker yarns shall be 210 denier, 3 ply. 3.11 Date of manufacture (see 6.1). When required by the procurement document, the textile manufacturer shall properly identify the age of the textile materials by placing a tag on the finished goods, or label on the containers, identifyin
48、g the specification to which the material is manufactured, the lot number and the date of manufacture. The date of manufacture is defined as the date (month and year) of the last manufacturing process that affects the physical characteristics of the material. 3.12 Put-up and length. Unless otherwise
49、 specified (see 6.1), the cord shall be put-up on non-returnable reels/spools in lengths specified in TABLE III. If cord is put up other than on reel/spool, then the yardage in that package shall be converted to represent the yardage per reel/spool in order to maintain the current sampling and inspection requirements listed in this specification (see Copyright Protected: Do Not Copy!PIA-C-5040F Page 8 of 18 3.12, 3.14, 4.3.2 and 4.3.3). Each reel/spool shall not contain any knots or splices an
