Table 3: Average cost of material (2005–2007).

MaterialTensile stress, MPaDensity, g/cm3Cost USD $/kg

Fibers

Glass35002.450.7
Kevlar 49, 2928001.474.5
PBO Zylon AS58001.5415
PBO Zylon HM58001.5615
Boron35002.4554
SIC33953.275
Saffil (5% iO2 + Al2O3)15003.32.5

Matrices

Polyester351.382
Polyvinyl651.53
Aluminum74–5502.712
Titanum238–15004.5118
Borosilicate glass902.230.5
Plastic40–2001.5–32–6

Materials

Steel500–25007.90.7–1
Concrete2.50.05
Cement (2000)2.50.06-0.07
Melted basalt352.930.005