Measuring element made of steel with hardened edge zone

A steel measuring element, having a material edge zone, that deforms when subjected to alternating bending actions induced by alternating pressure loads, wherein the steel measuring element is made of a non-precipitation-hardenable austenitic chromium-nickel steel, the material edge zone is provided with increased strength, the hardness of the material edge zone has a Vickers hardness of at least 500 or 1.5 to 2 times the initial hardness of the basic material, the material edge zone has a thickness of 2 to 50 micrometers, and the material edge zone is only formed on the side of the steel measuring element that is subjected to elevated pressure in the operating state.

A pressure measurement system comprising a pressure port that leads out of a housing and a measuring element that drives an indicator in front of a scale and an elastic tube which is connected in a pressure-tight manner to the pressure port and coupled with the measuring element, wherein the elastic tube deforms when subjected to alternating bending actions induced by alternating pressure loads, the elastic tube is made of an austenitic chromium-nickel steel with a carbon content of up to 0.03% and less than 2% manganese and up to 0.11% nitrogen, the elastic tube has an edge layer of increased strength, the edge layer is introduced into the inside and outside of the tube, the hardness of the edge layer on the tube between the outer edge region is 500 to 1200 Vickers hardness, and the edge layer is introduced into the inside and outside of the tube and has a thickness of at least 5 to 10 μm.