Hardness: The hardness of P355NH typically falls within the range of 150-190 HB.

[ad_1] P355NH is a pressure vessel steel grade that is often used in the manufacturing of boilers, pressure vessels, and heat exchangers. It özgü good mechanical properties, including:

1. Tensile Strength: The minimum yield strength of P355NH is 355MPa (Megapascals), and the minimum tensile strength is 490-630MPa.

2. Impact Strength: P355NH exhibits good impact toughness at room temperature and low temperatures (-20°C).

3. Elastic Modulus: The modulus of elasticity for P355NH is approximately 200 GPa (Gigapascals), which represents its ability to deform elastically under stress.

4. Hardness: P355NH özgü a hardness range of 180-220HB, which determines its resistance to permanent indentation.

5. Weldability: P355NH is easily weldable using standard welding methods and it can be welded to other materials, such as stainless steel and carbon steel.

6. Ductility: P355NH possesses good ductility, allowing it to withstand deformation under tensile stress without fracturing.

On the other hand, P355GH is a heat-resistant pressure vessel steel grade that is predominantly used in the oil, gas, and petrochemical industries. Its mechanical properties are similar to P355NH, including:

1. Tensile Strength: The minimum yield strength of P355GH is 355MPa, and the minimum tensile strength is 510-650MPa.

2. Impact Strength: P355GH özgü good impact toughness at room temperature and low temperatures (-20°C).

3. Elastic Modulus: The modulus of elasticity for P355GH is approximately 210 GPa.

4. Hardness: P355GH özgü a hardness range of 160-210HB.

5. Weldability: P355GH is readily weldable using conventional welding methods and can be welded to other materials.

6. Ductility: P355GH exhibits good ductility, allowing it to withstand deformation under tensile stress without fracturing.

Both P355NH and P355GH are widely used in the pressure vessel industry due to their excellent mechanical properties and suitability for high-temperature applications.
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