| Force | Mass | Length | Time | Stress | Density | Acc of Gravity |
|---|---|---|---|---|---|---|
| Newton | kg | meter | sec | Pa | ρspec*103 (kg/m3) | 9.81 m/s2 |
| Newton | ton | mm | sec | MPa | ρspec*10-9 (tons/mm3) | 9.81*103 mm/s2 |
| kN | kg | mm | msec | GPa | ρspec*10-6 (kg/mm3) | 9.81*10-3 mm/ms2 |
| Newton | gram | mm | msec | MPa | ρspec*10-3 (g/mm3) | 9.81*10-3 mm/ms2 |
| lbf | lbm / 386.1 | in | sec | psi | ρspec/10,687 or 0.00259 * (ρ lbm/in3) | 386.1 in/s2 |
| Material | Modulus | Poisson Ratio | Density | Speed of Sound |
|---|---|---|---|---|
| Al | 71,000 MPa | ν = 0.33 | ρspec = 2.8 | c = 5.0 mm/μs |
| Steel | 200,000 MPa | ν = 0.32 | ρspec = 7.8 | c = 5.1 mm/μs |
| Al | 10.3*106 psi | ν = 0.33 | 0.101 lbm/in3 | c = 0.20 in/μs |
| Steel | 29 * 106 psi | ν = 0.32 | 0.281 lbm/in3 | c = 0.20 in/μs |