PURE TUNGSTEN

Compaction Pressure (MP_a)

% Porosity

Pore volume fraction, φ

1 − φ

initial pore vol. fraction of vibrated powder, φ₀

$\frac{\phi }{{\phi }_0}={\phi }_R$

σ_p (Montes Theory) (% IACS)

σ_p = σ_ef

Maxwell-Garnett (% IACS)

σ_p = σ_ef Bruggeman (% IACS)

100

49.5

0.495

0.505

0.854

0.580

10.78

12.50

7.95

150

45.0

0.450

0.550

0.854

0.527

12.57

13.86

10.03

200

41.0

0.410

0.590

0.854

0.480

14.12

15.11

11.88

250

37.5

0.375

0.625

0.854

0.439

15.55

16.24

13.50

300

32.0

0.320

0.680

0.854

0.375

17.74

18.10

16.04

PURE MOLYBDENUM

100

42.0

0.420

0.580

0.70

0.600

8.51

14.80

11.42

150

37.0

0.370

0.630

0.70

0.529

10.87

16.41

13.73

200

34.0

0.340

0.660

0.70

0.486

12.34

17.41

15.12

250

28.0

0.280

0.720

0.70

0.400

15.43

19.49

17.90

300

25.0

0.250

0.750

0.70

0.357

17.00

20.57

19.29