P355NH is a pressure vessel steel grade that is used for high-temperature service. It is a weldable fine-grain steel with good mechanical properties. Here are some of the key mechanical properties of P355NH:

P355NH is a pressure vessel steel grade that is used for high-temperature service. It is a weldable fine-grain steel with good mechanical properties. Here are some of the key mechanical properties of P355NH:
The mechanical properties of P355NH and P355GH steel, which are both commonly used for pressure vessel applications, are as follows:

P355NH:
– Tensile strength: 490-630 MPa
– Yield strength: 355 MPa
– Elongation: 22%
– Impact energy: 27 Joules at -20°C

P355GH:
– Tensile strength: 510-650 MPa
– Yield strength: 355 MPa
– Elongation: 22%
– Impact energy: 20 Joules at 0°C

Both grades have a similar yield strength, but P355GH özgü slightly higher tensile strength and lower impact energy compared to P355NH. These properties make P355GH suitable for higher temperature applications, while P355NH is often chosen for low-temperature service conditions. However, it is important to note that these mechanical properties may vary depending on the thickness and heat treatment of the steel. It is recommended to refer to the specific material data sheet or manufacturer’s guidelines for accurate and detailed mechanical property information.

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