P355NH is a pressure vessel steel grade that is commonly used in the fabrication of boilers and pressure vessels. Its mechanical properties include:

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The mechanical properties of P355NH and P355GH vary slightly, but they are both designed to be used in high temperature and high pressure applications.

The typical mechanical properties for P355NH are as follows:
– Tensile strength: 490-630 MPa
– Yield strength: 355 MPa
– Elongation: 22%
– Impact energy: 27 J at -20°C

The mechanical properties for P355GH are similar to P355NH, with some variations:
– Tensile strength: 510-650 MPa
– Yield strength: 355 MPa
– Elongation: 20%
– Impact energy: 45 J at 0°C

These mechanical properties indicate the strength and toughness of the steel, as well as its ability to withstand high temperatures and pressure.
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