Example Values
The following table shows some typical values of fracture toughness for various materials:
| Material type | Material | KIc (MPa · m1/2) |
|---|---|---|
| Metal | Aluminum alloy (7075) | 24 |
| Steel alloy (4340) | 50 | |
| Titanium alloy | 44–66 | |
| Aluminum | 14–28 | |
| Ceramic | Aluminium oxide | 3–5 |
| Silicon carbide | 3–5 | |
| Soda-lime glass | 0.7–0.8 | |
| Concrete | 0.2–1.4 | |
| Polymer | Polymethyl methacrylate | 0.7–1.6 |
| Polystyrene | 0.7–1.1 | |
| Composite | Mullite-fibre composite | 1.8–3.3 |
| Silica aerogels | 0.0008–0.0048 |
Read more about this topic: Fracture Toughness
Famous quotes containing the word values:
“When the shingles hissed
in the rain incendiary,
other values were revealed to us,”
—Hilda Doolittle (1886–1961)
“What we often take to be family values—the work ethic, honesty, clean living, marital fidelity, and individual responsibility—are in fact social, religious, or cultural values. To be sure, these values are transmitted by parents to their children and are familial in that sense. They do not, however, originate within the family. It is the value of close relationships with other family members, and the importance of these bonds relative to other needs.”
—David Elkind (20th century)