1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there
2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2014 SAE International All rights reserved. No part of this p
3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497
4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AS5942 AEROSPACE STANDARD AS5942 Issued 2004-05 Reaffirmed 2014-12 Marking of Ele
5、ctrical Insulating Materials RATIONALE AS5942 has been reaffirmed to comply with the SAE five-year review policy. FOREWORD This document provides an industry standard for the marking of identification sleeves, wrap-around labels and “tie-on” tags for aerospace vehicle wiring. The performance and tes
6、t requirements specified in this document provide an acceptable level of legibility and durability that are intended to meet the requirements for wiring systems. The markings specified herein can be applied to sleeves, labels or tags that identify individual wires, cables and wiring harness assembli
7、es. The performance and test requirements for installer-provided identification markings applied directly to wire and cable insulation are specified in AS4373 Method 711. 1. SCOPE: 1.1 This specification establishes the performance requirements for the identification of wire and cable by indirect ma
8、rkings that have been applied to electrical insulating materials including heat shrink sleeving, wrap around labels and “tie-on” tags as well as any other types of materials used for indirect marking. This specification covers the processes used to mark these materials, including impact ink marking,
9、 thermal transfer, hot stamp, and lasers, etc. This specification does not cover the direct marking on insulated electrical wires and cables. 2. APPLICABLE DOCUMENTS: 2.1 Government Documents: 2.1.1 Specifications, Standards and Handbooks: Unless otherwise specified, the following Specifications, st
10、andards and handbooks, of the issue listed in that issue of the Department of Defense Index of Specification and Standards (DODISS) specified in the solicitation form a part of this specification to the extent specified herein. FEDERAL SPECIFICATIONS A-A-132 Erasers, Commercial Item Description MILI
11、TARY STANDARDS MIL-STD-104 Limits for Electrical Insulation Color MIL-STD-202 Test Methods for Electronic and Electrical Component Parts (Copies of federal and military standards and handbooks are available from the Standardization Documents Order Desk, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA
12、 191111-5094.) 2.2 Non-Government Publications: The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise s
13、pecified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation. SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) AS4373 Test Methods for Insulated Electric Wire AS50881 Wiring, Aerospace Vehicle AMS-DTL-23053/5 Insulation Sleeving, Electrical, Heat Shrinkab
14、le, Polyolefin, Flexible, Cross-linked AMS-DTL-23053/8 Insulation Sleeving, Electrical, Heat Shrinkable, Polyvinylidene Fluoride, Semi-Rigid, Cross-linked J314 Felts-Wool and Part Wool (Application for copies should be addressed to SAE, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) SAE INTERNA
15、TIONAL AS5942 2 OF 72.3 Order of Precedence: In the event of conflict between the text of this document and the references cited herein (except for related associated detail specifications, specification sheets, or military standards), the text of this document takes precedence. Nothing in this docu
16、ment, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS: 3.1 Pre-production Approval: When specified by the procuring activity, the marking shall pass the pre-production inspection. 3.2 Identification Code and Spacing Between Markings:
17、 The identification code to be marked on the insulating material and the amount of spacing between markings shall be as specified by the procuring activity (see 6.1). 3.2.1 Color: The marking color shall be as specified by the procuring activity (see 6.1). Colors shall conform to Class 1 of MIL-STD-
18、104. 3.2.2 Printing Type: The printing type for sleeving shall be as specified by the procuring activity in accordance with the requirements of Table 1. Printing type for “tie-on” tags and wrap-around labels shall meet Workmanship requirement as specified in 3.5. TABLE 1 - Printing Type for Sleeving
19、 1/ Insulation Diameter 2/ Nominal Height of Type Face Reading Direction .052 to .068 .069 to .096 .097 to .166 .167 to .624 .625 to 1.000 over 1.00 .050 1/16 5/64 7/64 1/8 3/16 Horizontal Horizontal Horizontal Horizontal Horizontal Horizontal 1/ Dimensions in inches. 2/ For heat shrinkable sleeving
20、, the height of the type face shall be governed by the “as supplied“ insulation diameter. SAE INTERNATIONAL AS5942 3 OF 73.3 Marking Durability: After completion of all non-destructive tests specified in the basic specification, standard, or drawing covering the insulation material, the marking shal
21、l conform to the Adherence requirement of 3.4.1. 3.4 Properties of the Marking: 3.4.1 Adherence: After rubbing with an eraser or wool felt pad as specified in 4.1, the marking shall conform to the Workmanship requirements of 3.5. 3.4.2 Fluid Resistance: Testing shall be in accordance with Test Metho
22、d 215 of MIL-STD-202 using fluids required by the procuring activity. After testing, the marking shall conform to the Workmanship requirements of 3.5. 3.5 Workmanship: When examined visually at a reading distance of 14 inches, each character of the marking shall be uniform, clear, and easily identif
23、ied as an accurate duplication of the printing type and no evidence of damage to the insulating material shall be visible. See AS4373 method 711. 3.6 Temperature Cycling: (When required by the Procuring Activity) After testing in accordance with the requirements of 4.2, the marking shall conform to
24、the Workmanship requirements of 3.5. 3.7 Heat Aging: (When required by the Procuring Activity) After testing in accordance with the requirements of 4.3, the marking shall conform to the Workmanship requirements of 3.5. 3.8 Heat Shock: (When required by the Procuring Activity) After testing in accord
25、ance with the requirements of 4.4, the marking shall conform to the Workmanship requirements of 3.5. 4. TEST METHODS: Markings on heat shrinkable sleeving shall be tested only after completion of the unrestricted shrinkage procedure specified in the specification covering the sleeving. SAE INTERNATI
26、ONAL AS5942 4 OF 74.1 Adherence: Six separate marks on one specimen shall be placed on a flat solid surface or a suitable mounting fixture so that the rubbing member will contact the marking. A weight of 2 pounds 0.5 pound shall be applied through the rubbing member to the identification marking. Th
27、e rubbing member shall be a flat surface of a pencil eraser conforming to the regular grade of A-A-132 (use pink color eraser). When required by the procuring activity, the rubbing member may be a wool felt pad, in lieu of the pencil eraser. Felt pads shall be in accordance with SAE F-1 Type 1 Class
28、 16R1, SAE F-3 Type 1 Class 16R3, SAE F-13 Type 1 Class 9R4, SAE F-50 Type 1 Class 16R1X, or SAE F-3 Type 1 Class 16R3X. One rub shall be made by placing the weighted eraser or pad on the sample and rubbing at least a 3/8 inch length of the eraser/pad along the entire length of the marking. The eras
29、er/pad shall be wide enough to completely cover the characters being rubbed. The marking shall be subjected to the number of rubs specified in Table 2. The marking shall then be visually examined at a reading distance of 14 inches for conformance to the Workmanship requirement of 3.5. TABLE 2 - Legi
30、bility at 14 inches After Print Adherence Test Using 2/ 3/ Marking Applied To: Basic Print Adherence After Temperature Cycling: 6 Cycles of 0.5 hour -196 C & 0.5 hour +200 C 1/ After Heat Aging at 175 for 168 hours 1/ After Heat Shock 4 hours 250 C 1/ After Fluid Immersion Per AS4373 Method 711 Iden
31、tification Sleeves Polyolefin 135 C AMS-DTL-23053/5 and AMS-DTL-23053/5 Class 1 Polyvinylidene Fluoride 175 C AMS-DTL-23053/8 20 Rubs 20 Rubs 20 Rubs 20 Rubs 20 Rubs Wrap-Around Labels and Tie-On Identifica- tion Tags 20 Rubs 20 Rubs 20 Rubs 20 Rubs 20 Rubs 1/ Tests to be performed only when require
32、d by the procuring activity. 2/ When required by the procuring activity, additional adherence testing may be required in the form of a greater number of rubs. 3/ Tests described in Table 2 are marking process qualification tests and shall not be applicable to parts intended for installation in aeros
33、pace applications. SAE INTERNATIONAL AS5942 5 OF 74.2 Temperature Cycling: (When required by the Procuring Activity) Three specimens marked in accordance with the manufacturers instructions shall be tested. Marker sleeves shall be recovered over a stranded wire as specified in Table 3. Specimens sha
34、ll be subjected to the number of temperature cycles specified in Table 2. Temperature cycles shall be as follows: 0.5 hour immersed in liquid nitrogen at -196 C followed immediately by 0.5 hour in a +200 C mechanical convection oven with an air velocity of 100 to 200 FPM past the specimens. After th
35、e final cycle, the specimens shall be allowed to stabilize at room temperature. The markings shall then be visually examined at a reading distance of 14 inches for conformance to the Workmanship requirement of 3.5. TABLE 3 - Stranded Wire Size for Heat Aging and Temperature Cycling Test Stranded Wir
36、e Size MarkerSleeveSize AWG Size Stranding3/32 18 19 x 30 1/8 14 19 x 27 3/16 10 37 x 26 1/4 10 7 x 15/30 3/8 6 19 x 7/27 1/2 4 19 x 7/25 4.3 Heat Aging: (When required by the Procuring Activity) Six marker sleeves marked in accordance with the manufacturers instructions shall be recovered over a st
37、randed wire as specified in Table 3 then conditioned for the time and temperature specified in Table 2 in a mechanical convection oven with an air velocity of 100 to 200 FPM past the specimens. After conditioning, the specimens shall be removed from the oven and allowed to stabilize at room temperat
38、ure. The markings shall then be subjected to the Adherence Test of 4.1. 4.4 Heat Shock: (When required by the Procuring Activity) Three marker sleeves shall be marked in accordance with the manufacturers instructions then removed from the carrier. The specimens shall be conditioned for the time and
39、temperature specified in Table 2 in a mechanical convection oven with an air velocity of 100 to 200 FPM past the specimens. After conditioning, the specimens shall be removed from the oven and allowed to stabilize at room temperature. The markings shall then be subjected to the Adherence Test of 4.1
40、. SAE INTERNATIONAL AS5942 6 OF 75. PREPARATION FOR DELIVERY: This section is not applicable to this specification. 6. NOTES: 6.1 Intended Use: Various printing processes can be used to permanently mark the surface of most types of insulation materials (flexible, rigid, braided, heat-shrinkable). Th
41、e markings usually consist of circuit identification codes such as those specified in AS50881. Identification of each connecting wire as to its function or diagram location facilitates manufacture of electrical equipment and subsequent repair and maintenance. Materials that cannot be marked directly
42、, such as unjacketed shielded wire, thermocouple wire, multi-conductor cable, and fiberglass are identified by the use of a marked insulating sleeve. CAUTION: Metallic markers or bands should not be installed on electrical wiring. 6.1.1 Marking Color: A contrasting marking medium should be used to p
43、rovide the best contrast possible with the material being marked. Whenever possible, a black marking medium should be used when marking on light colored materials and a white medium should be used when marking on dark colored materials. PREPARED UNDER THE JURISDICTION OF SAE SUBCOMMITTEE AE-8A, SYSTEMS INSULATION OF COMMITTEE AE-8, AEROSPACE ELECTRICAL/ELECTRONIC DISTRIBUTION SYSTEMS SAE INTERNATIONAL AS5942 7 OF 7
