1 psi~7000 Pa 1 ksi~7Mpa
2. Elastic Moduli
Steel~30*106 psi or 200 Gpa
Aluminum~ 10*106 psi or 70Gpa
Plastic~100,000 to 700,000 psi or 1 to 5 Gpa
3. possion ratio
0.3 for most materials
4. Yield Strength
Steel~ 36 ksi to 250 ksi or higher; 200 Mpa to 1700 Mpa or higher.
Aluminum alloys are similar to steel at low end, but do not get nearly so high (not above 100 ksi or 700 Mpa)
Plastics: 3ksi to 15 ksi; 20Mpa to 100 Mpa
