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MIL-W-81044/12 Wire

Product #: W980-28

Specifications

Gauge 28
Insulation O.D. 0.028 to 0.032 in
0.71 to 0.81 mm
Operating Voltage 600 V
Temperature Rating 150 ºC
Conductor Tin Coated Copper
Primary Insulation Crosslinked Polyalkene
Jacket Material Crosslinked Polyvinylidene Fluoride
Stranding (Number of Strands X AWG gage of Strands) 7 x 36
Min. Diameter of Stranded Conductor 0.014 in
Max. Diameter of Stranded Conductor 0.016 in
Weight 0.19 lb

Finished Wire

Max. Resistance at 20ºC (68ºF) per 1000 ft. 68.60 ohms
Diameter 0.030 ± 0.002 in
Nom. Weight 0.91 lb/1000 ft.
Max. Weight 0.96 lb/1000 ft.

Abrasion Resistance

Min. Resistance (inches of Tape) (Initial and After Immersion) 20
Weight Support Bracket A
Tension Load 1.00 lb

Mandrel Diameter (±3%)

Mandrel Diameter (±3%) - Life Cycle Test and Accelerated Aging Test 0.375 in
Mandrel Diameter (±3%) - Cold Bend Test 0.375 in
Mandrel Diameter (±3%) - Wrap Test 0.188 in

Test Load (±3%)

Test Load (±3%) - Life Cycle Test and Accelerated Aging Test 0.25 lb
Test Load (±3%) - Cold Bend Test 0.50 lb

Wire Ratings and Additional Requirements

Max. Conductor Temperature Range 150 ºC
302 ºF
Accelerated Aging Oven Temperature, 300 ±2ºC (572 ±3.6ºF) for 6 hours; for Identification Legibility, 225 ±2ºC (437 ±3.6ºF) for 6 hours
Blocking 225 ±2 ºC
437 ±3.6 ºF
Color In Accordance with MIL-STD-104, Class 1; White Preferred
Flammability 30 Seconds (Max); 3.0 inches (Max); No flaming of tissue paper
Humidity Resistance 500 megohms for 1000 ft, min insulation resistance after humidity exposure
Identification of Product Not required on sizes 28 or 30
Identification, Striping, or Banding Durability 125 cycles (250 strokes) (Min), 500 grams weight
Impulse Dielectric Test Finished Wire: 8.0 kilovolts (Peak), 100% Test
Primary Insulation (When Test is used in Lieu of Spark Test): 6.0 kilovolts (Peak), 100% Test
Min. Insulation Resistance for 1000 ft. 5000 Megohms
Life Cycle (Oven Temperature) 200 ±2 ºC
392 ±3.6 ºF
Physical Properties of Primary Insulation Tensile strength, 2500 psi (Min) Elongation, 150% (Min)
Polyimide Cure Test Not Applicable
Propellant Resistance Test Required
Shrinkage 0.125 inch Max. @ 300º ±2ºC (572º ±3.6ºF)
Smoke 200 ± 2 ºC
392 ± 3.6 ºF
Spark Test of Primary Insulation 1500 volts (rms), 60Hz, 100% Test
Surface Resistance 500 megohms-inches (min), initial and final readings
Thermal Shock (Oven Temperature) 150 ±2 ºC
302 ±3.6 ºF
Wet Dielectric Test 2500 V RMS
Max. Wicking 2.25 in
Wrap Test Mandrel wrap test required

International Standardization

Note Certain provisions of table I of this specification sheet are the subject of International Standardization agreement (ASCC AIR STD 12/5 and STANAG 3317). When amendment, revision, or cancellation of this specification sheet is proposed which affects or violates the International agreement concerned, the preparing activity will take appropriate reconciliation action through International Standardization channels including departmental Standardization offices, if required.