Elongation: P355NH exhibits a minimum elongation of 22%, which means that it can undergo significant plastic deformation before failure.

[ad_1] The mechanical properties of P355NH and P355GH, two grades of pressure vessel steel, are as follows:

P355NH Mechanical Properties:
– Yield strength (minimum): 355 MPa
– Tensile strength: 490 to 630 MPa
– Elongation (minimum): 22%
– Impact energy (minimum) at -20°C: 27 Joules

P355GH Mechanical Properties:
– Yield strength (minimum): 355 MPa
– Tensile strength: 510 to 650 MPa
– Elongation (minimum): 22%
– Impact energy (minimum) at 0°C: 27 Joules

These properties indicate the strength, ductility, and toughness of the materials, which are important considerations in designing and operating pressure vessels.
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