Kapton Polyimide Techical Data

Kapton Type HN

Kapton® Type HN is a tough, aromatic polyimide film, exhibiting an excellent balance of physical, chemical, and electrical properties over a wide temperature range, particularly at unusually high temperatures. Chemically, its polyimide polymer makeup is the result of a polycondensation reaction between pyromellitic dianhydride and 4,4.diaminodiphenyl ether. Kapton® HN is available in the following gauges: 30 (7.5 µm), 50 (12.7 µm), 100 (25.4 µm), 200 (50.8 µm), 300 (76.2 µm), and 500 (127 µm). Other gauges, such as 75 (19.1 µm) and 400 (102 µm), are available by special request.

Table 2 Mechanical Properties of Kapton®
Type HN Polyimide Film

Property	Property Value--Film Thickness, mil (µm)						Method
Property	0.30 (7.6)	0.50 (12.7)*	1.00 (25.4)*	2.00 (50.8)*	3.00 (76.2)*	5.00 (127)*	Method
Tensile Strength, psi (MPa) at 23°C (73°F). Machine Direction (MD) and Transverse Direction (TD), min.	16,000 (110)	20,000 (138)	24,000 (165)	24,000 (165)	24,000 (165)	24,000 (165)	ASTM D-882-91, Method A, using an Instron Tensile Tester (specimen size: 1/2" x 6" [12.7 mm x 152 mm]; jaw separation: 4" [102 mm]; jaw speed: 2"/min [51 mm/min]). Calculate the average of five specimens based on original measured thickness.
Elongation, %, MD and TD, min.	25	35	40	45	50	50	Same as above.
Shrinkage, %, MD and TD at 400°C (752°F), max.	4.0	4.0	2.5	2.5	2.5	2.5	MIL-P-46112B. The percent shrinkage is obtained for either the MD or TD using the average of three measurements in either direction before and after conditioning. Prior to measurement, the 8 1/2" x 11" (216 mm x 279 mm) specimen is conditioned by freely suspending it for 2 hr** in an oven controlled to 400°C (752°F).
Moisture Absorption, %, max.	4.0	4.0	4.0	4.0	4.0	4.0	ASTM D-570-92, using 24-hr immersion at 23°C (73° Average of three specimens.

* Also applies to Type VN, except shrinkage, which is shown in Table 5.
** 1 hr for 30 and 50 gauge film

Table 3 Electrical Properties of Kapton®
Type HN Polyimide Film

Property	Property Value--Film Thickness, mil (µm)						Method
Property	0.30 (7.6)	0.50 (12.7)*	1.00 (25.4)*	2.00 (50.8)*	3.00 (76.2)*	5.00 (127)*	Method
Dielectric Strength, AC V/mil (kV/mm), min.	3,000 (118)	3,000 (118)	6,000 (236)	5,000 (197)	4,500 (177)	3,000 (118)	ASTM D-149-94. (Average of ten specimens.) Flat sheets in air placed between 1/4" (6 mm) diameter brass electrodes with 1/32" (0.8 mm) edge radius subjected to 60 cycles AC voltage at 500 V/sec rate of rise to the breakdown voltage.
Volume Resistivity, ohm-cm at 200°C (392°F), min.	10¹²	10¹²	10¹²	10¹²	10¹²	10¹²	ASTM D-257-93
Dielectric Constant at 1 kHz, max.	4.0	4.0	3.9	3.9	3.9	3.9	ASTM D-150-94. Use conducting silver paint electrodes, two-terminal system of measurement at standard conditions. Results are based on an average of five tests using measured thickness of specimens.
Dissipation Factor at 1 kHz, max.	0.0070	0.0050	0.0036	0.0036	0.0036	0.0036	Same as above.

Table 6 Kapton® Polyimide Film Specifications and Tolerances

Film Type	Thickness Nominal mil (µm)*	Thickness Tolerance		Width Range		Unit Weight		Area Factor
Film Type	Thickness Nominal mil (µm)*	Min. mil (µm)	Max. mil (µm)	Min. in (mm)	Max. in (mm)	Min. g/m²	Max. g/m²	ft²/lb	(m²/kg)
30HN	0.30 (7.6)	0.24 (6.1)	0.36 (9.1)	3/16 (4.8)	52 (1320)	7.6	14.0	453	92.8
50HN	0.50 (12.7)	0.35 (8.9)	0.65 (16.5)	3/16 (4.8)	52 (1320)	14.0	26.0	272	55.7
100HN	1.00 (25.4)	0.85 (21.6)	1.15 (29.2)	3/16 (4.8)	52 (1320)	32.7	39.7	136	27.9
200HN	2.00 (50.8)	1.75 (44.5)	2.25 (57.2)	3/16 (4.8)	52 (1320)	66.9	77.9	68	13.9
300HN	3.00 (76.2)	2.72 (69.1)	3.28 (83.3)	3/16 (4.8)	52 (1320)	101.9	115.4	45	9.2
500HN	5.00 (127)	4.65 (118)	5.35 (136)	3/16 (4.8)	52 (1320)	169.5	192.5	27	5.5

Kapton Type HN

Table 2 Mechanical Properties of Kapton® Type HN Polyimide Film

Table 3 Electrical Properties of Kapton® Type HN Polyimide Film

Table 6 Kapton® Polyimide Film Specifications and Tolerances

Table 2 Mechanical Properties of Kapton®
Type HN Polyimide Film

Table 3 Electrical Properties of Kapton®
Type HN Polyimide Film