Thermal and Mechanical Properties of Kapton (Polyimide)

Density= 1.42 g/cc

T (K)

Thermal Expansion

Heat Capacity

Thermal Conductivity

Tensile Strength

Yield Strength

Young's Modulus

(%)

(J/gK)

(W/cmK)

(Psi)

373

0.160

0.827

2.04E-03

1.40E+04

5.55E+05

360

0.130

0.815

2.02E-03

1.65E+04

5.90E+05

340

0.090

0.795

1.99E-03

1.95E+04

6.40E+05

320

0.050

0.775

1.95E-03

2.25E+04

6.80E+05

300

0.007

0.755

1.92E-03

2.58E+04

7.25E+05

293

0.000

0.747

1.91E-03

2.66E+04

7.40E+05

273

-0.040

0.725

1.87E-03

2.91E+04

7.70E+05

260

-0.070

0.709

1.85E-03

3.10E+04

7.90E+05

240

-0.110

0.684

1.82E-03

3.33E+04

8.20E+05

220

-0.150

0.657

1.79E-03

3.55E+04

8.45E+05

200

-0.190

0.627

1.75E-03

3.75E+04

8.70E+05

180

0.594

1.71E-03

3.95E+04

8.85E+05

160

0.557

1.66E-03

4.10E+04

9.00E+05

140

0.516

1.60E-03

4.25E+04

9.08E+05

120

0.468

1.52E-03

4.40E+04

9.15E+05

100

0.414

1.42E-03

4.50E+04

9.15E+05

0.349

1.28E-03

4.63E+04

9.14E+05

0.270

1.09E-03

4.70E+04

9.10E+05

0.173

8.32E-04

4.75E+04

9.00E+05

0.058

4.78E-04

4.80E+04

8.85E+05

0.012

2.35E-04

4.82E+04

8.78E+05

4.2

0.001

1.07E-04

4.83E+04

8.70E+05

T(K) = Temperature in Kelvin, T(C) = Temperature in Celsius

T (C) = T (K) - 273

Thermal Expansion (%) = 100 x [L(T) - L(293)] / L(293)

Heat Capacity [=] 1 J/gK = 0.23864 BTU/lbm/F

Thermal Conductivity [=] 1 W/cmK = 57.77 BTU/hr/ft/F

Tensile and Yield Strengths- lower bound values given

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