Stress and pressure
The SI unit of stress and pressure is the N/m2 or the Pascal (Pa), but from a materials point of view it is very small. The levels of stress large enough to distort or deform materials are measured in megaPascals (MPa). The table list the conversion factors relating MPa to measures of stress used in the older cgs and metric systems (dyne/cm2, kgf/mm2) by the Imperial system (lb/in2, ton/in2) and by atmospheric science (bar).
Conversion of units – stress and pressure |
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To ^ |
MPa |
dyn/cm2 |
lb/in2 |
kgf/mm2 |
bar |
long ton/in2 |
From j |
Multiply by |
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MPa |
1 |
107 |
1.45 X 102 |
0.102 |
10 |
6.48 X 10~2 |
dyn/cm2 |
10-7 |
1 |
1.45 X 10-5 |
1.02 X 10-8 |
10-6 |
6.48 X 10-9 |
lb/in2 |
6.89 X 10-3 |
6.89 X 104 |
1 |
7.03 X 1Q-4 |
6.89 X 10-2 |
4.46 X 10“4 |
kgf/mm2 |
9... |