Downloaded from FEDERAL SPECIFICATION SHEET WIRE, MAGNET, ELECTRICAL, CLASS 220, TYPE M, POLYIMIDE-COATED, ROUND

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1 1 E!w!3wd 1..T /15B June 1, 1988 SUPERSEDING J-w-1177/15A September 27, 1976 FEDERAL SPECIFICATION SHEET WIRE, MAGNET, ELECTRICAL, CLASS 22, TYPE M, POLYIMIDE-COATED, ROUND This specification is approved by the Commissioner, Federal Supply Service, General Services Administration, for the use of all Federal agencies. The requirements for acquiring the wire described herein shall consist of this specification and the latest issue of J-W Classification: Insulating materials: NEMA/ANS1 equivalent: General requirements: Requirements: Class 22; type M (single), type M2 (heavy), type M3 (triple), type M4 (quadruple); round. The film shall be based on polyimide resin. M, M2, and M3 test requirements, except for thermal endurance and certain wire sizes required for stock standardization, are equivalent to MU-16 of NEMA MN 1. M4 is not specified in NEMA MW 1. See J-W-1177 for general requirements, quality assurance provisions, and packaging. Teat procedure, Wire sizes, Characteristics see J-W-1177 AwG Dimensions Adherence and flexibility Elongation Heat shock Requirements See tablea I and II. No cracks visible in the coating. Not les~ than the value in table III. No cracks visible in the coating after conditioning as shown in table IV. AMSC NIA FSC 6145 DISTRIBUTION S TATEMSNTA Approved for public releaae; distribution unlimited o lof8

2 Requirements: (Continued) Characteristics Test procedure, see J-W-1177 Wire sizes, AWG Requirements Scrape resistance Springback Dielectric strength Continuity Completeness of cure Thermoplastic flow Volubility Dielectric strength at temperature Thermal endurance L , 36 18, 36 18, Lowest grams-to-fail load for any of the three teats and the average of the three tests shall be not less than the valuea in table V. Not greater than the value in table VI. Not less than the value in table VII. The number of discontinuities shall be not greater than the number listed in table VIII. Dissipation factor shall be not greater than.6 percent. Median shall be not less than 4 C with heavy film coated wire. Heavy film coated wire shall not soften sufficiently to expose bare conductor when immersed in xylene or 5/5 parts by volume xylene/ethyl CellOsOlve. Heavy film coated wire shall ave~age not less than 4275 volts for 18 AWG or 19 volts for 36 AWG. 22 C minimum with heavy film coated wire. 2 volts/udl minimum after 168 hours at 275 C. 24 C minimum as ahown in table IV. 2

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5 TABLE II. Characteristics of wire, sizes 45 to 5 AWG. I 1 I Type M, single Type M2, heavy Theoretical_L/ Minimum Minimum nominal Conductor resistance at increase Maximum increase bare wire 2 C ohms per foot in overall in AWG diameter, diameter, diameter, diameter, size inch Minimum Nominal Maximum inch inch inch Maximum overall diameter, inch / Theoretical nominal bare wire diameters are in accordance with NBS Handbook 1. Conductor diameter tolerances are shown as resistance values and shall be determined by measuring the resistance of the wire in accordance with ASTM B 193, where applicable. A specimen at least 5 feet long shall be used. TABLE III. Elongation of finiehed wire. o Minimum Minimum Minimum Minimum Minimum AwG elongation, AWG elongation, AWG elongation, AWG elongation, AWG elongation, size percent size percent size percent size percent size percent i TABLE IV. Heat shock. AwG size I Minimum I I Minimum elongation, Mandrel temperature, percent diameter c I None 24o x 24o x ~fzo 3x 24 Or to the breaking point, whichever is less. s

6 t. Type M TABLE V. Scrape resistance. Type M4 Average Minimum AWG grams- gramssize to-fail to-fail Minimum gr.9ma- to-fail Average gramsto-fail TABLE VI. Springback of finished wire. Maximum springback, degreea Maximum t de[ ingback, es EAwG Types M size and M B Types M3 and M AwG size Typea M and M Types M3 and M

7 . AwG size Type M TABLE VII. Minimum breakdown voltages. 1/ volts Type M2 Type M3 AWG size Type M volts Type M2 J-W-1177/15B Type M ills B BOOO 7BO B B BOO l/ All sizes of type M4 shall be not less than 2 voltsfmil. TABLE VIII. Continuity. Maximum number of discontinuities AWG size Type M Type M2 Type M3 Type Mh

8 Part number: Magnet wire covered by by the following part Ml177/15-2C29 this specification numbering pystem. shall be defined Example:. I Ml177/15- c 29 -rt T T Fed eral Two digit Single letter Three character specification type code conductor code size code identifier The following codes shall apply: Type Type code Conductor Conductor code M 1 Copper c M2 2 Aluminum A M3 3 Nickel-cc.atedcopper N M4 4 Silver-coated copper s The size code shall be the bare WIre dimension. size shall be used. AWG WIre Intended use: Type M magnet wire is intended for use in 22 C applications si~lar to those for which type T is used. Type M magnet wire has been standardized for the repair of shipboard power equipment. Revision letters of the changes. are not used to denote changea due to the extensiveness MILITARY INTERESTS: Custodians: Army - CR Navy - SH Air Force - 85 Review activities: Army - AR, ER, MI DLA - Is User activities: Army - MS Navy - AS, CG, MC, CIVIL AGENCY COORDINATING ACTIVITIES : GSA - FSS, PBO, PCD INTERIOR - BLi+ HHS - FDA DCGOVT - DCG NASA - JFK COMMSRCE - NBS TRANSPORTATION - APM, F&i Preparing activity: Navy - SH s (Project ) *U..% GOVE,NMW.T mm.. omctx In9 -*lm 8