Brief introduction of P355GH nuclear power steel

P355GH nuclear power steel plate, European standard pressure vessel plate, belongs to low alloy high strength steel. P355GH steel has good plasticity, toughness, cold bending performance and welding performance. It is used in the manufacture of nuclear island steel containment, pressure vessels, equipment components, etc.

P355GH executive standard: EN10028.
P355GH heat treatment delivery status: normalizing (normalizing temperature 890℃-950℃) or normalizing rolling instead of normalizing.

P355GH nuclear power steel flaw detection standard, acceptance level:
Class I: CLR%≤5, CTR%≤1.5, CSR%≤0.5
Grade II: CLR%≤10, CTR%≤3, CSR%≤1
Grade III: CLR%≤15, CTR%≤5, CSR%≤2
CLR% Crack Length Ratio, CTR% Crack Thickness Ratio, CSR% Crack Sensitivity Ratio.

P355GH steel smelting analysis, chemical composition elements:
C: 0.10-0.22, Si: ≤0.60, Mn: 1.10-1.70, P: ≤0.025, S: ≤0.010, Al: ≥ 0.020, N: ≤0.012, Cr: ≤0.30, Cu: ≤0.30, Mo: ≤0.08, Nb: ≤0.040, Ni: ≤0.30, Ti: ≤0.03, V: ≤0.02. Composition Note: Cr+Cu+Mo+Ni≤0.7.

P355GH pressure vessel steel high temperature stretching:

P355GH nuclear power steel mechanical properties:
P355GH Thickness (mm): 8-16, Yield Strength (MPa): 355, Tensile Strength (MPa): 510-650, Elongation: 20, Minimum Impact Energy (J): -20℃: 20, 0℃: 34, 20℃: 40.

P355GH Thickness (mm): 16-40, Yield Strength (MPa): 345, Tensile Strength (MPa): 510-650, Elongation: 20, Minimum Impact Energy (J): -20℃: 20, 0℃: 34, 20℃: 40.

P355GH Thickness (mm): 40-60, Yield Strength (MPa): 335, Tensile Strength (MPa): 510-650, Elongation: 20, Minimum Impact Energy (J): -20℃: 20, 0℃: 34, 20℃: 40.

P355GH Thickness (mm): 60-100, Yield Strength (MPa): 315, Tensile Strength (MPa): 490-630, Elongation: 20, Minimum Impact Energy (J): -20℃: 20, 0℃: 34, 20℃: 40.

P355GH Thickness (mm): 100-150, Yield Strength (MPa): 296, Tensile Strength (MPa): 480-630, Elongation: 20, Minimum Impact Energy (J): -20℃: 20, 0℃: 34, 20℃: 40.

P355GH Thickness (mm): 150-250, Yield Strength (MPa): 280, Tensile Strength (MPa): 470-630, Elongation: 20, Minimum Impact Energy (J): -20℃: 20, 0℃: 34, 20℃: 40.

The main purpose of P355GH steel:
P355GH steel is a high-voltage nuclear power steel, which is widely used in the manufacture of boilers, headers, steam-water separators, high-pressure heaters, deaerators, evaporators, voltage stabilizers and other conventional islands and the manufacture of key electrical equipment.