1000 pounds per square inch (ksi) = 6894.76 kPa, so 1 ton (2000 pounds) per square inch = 13789.52 kPa,
and 20 tons per square inch = 275790.4 kPa = 275.7904 MPa[megaPascal].
I used ConvertWorld to help with the conversions. See related link.
20 tons per square inch = 275.790 megapascals
20 tons/in2 = 40000 pounds/in2 (psi)
Multiply psi by 0.006894759087 to convert from psi to MPa
40000 psi * 0.006894759087 MPa/psi = 275.790 (Googled the conversion rate)
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Mega Pascal - measurement of pressure
The prefix "mega" means 106. So 1 megapascal = 1,000,000 pacals or 1 pascal = 0.000001 megapascals.
1 MPa = 1000000 N/m2 and 1 N = 1 kg*m/s2
the mega square, the hexagon, the mega mega triangle, the octagon minus 2 sides, the dexagon minus a few sides. All you have to do is be creative
1 gram = 0.001 kilograms 1 megagram = 1,000,000 grams = 1,000,000*0.001 = 1000 kilograms