I have a German engineering thesis written in 1963 from Technische Hochschule Hannover.
In the results the author displays stress with the units of kp/cm² and the load as Mp. I am assuming the “p” is for Pfund which I am finding equal to 500 grams.
However, when I convert this to modern units of MPa and Newtons the results are too large to make sense. The results are about twenty times higher than what I expect:
1 kp/cm² ≙ (1 kp/cm²) · (500 g/p) · (9.81 N/kg) · (100 cm/m)² = 49,050,000 N/m² = 49.05 MPa
1 Mp ≙ (1 Mp) · (500 g/p) · (9.81 N/kg) = 4,905 kN
Could kp and Mp mean something else than Kilopfund and Megapfund?