P355GH steel Widely used throughout the petrochemical industry,
P355GH is a pressure vessel steel grade as specified under the Euro Norm standard (EN10028) which has superseded British Standard and DIN standard equivalents.
P355GH is used worldwide by fabricators of welded pressure vessels, industrial boilers and heat exchangers and is engineered to work well in elevated temperature service.
EN 10028 P355GH stele Chemical Composition
| Element | % by mass | Element | % by mass |
| Carbon (C) | 0.10 to 0.22 | Silicon (Si) | ≤0.60 |
| Manganese (Mn) | 1.10 to 1.70 | Phosphorous (P) (max) | 0.025 |
| Sulphur (S) (max) | 0.015 | Aluminium (Al) | ≤0.020 |
| Nitrogen (N) | ≤0.012 | Chromium (Cr) | ≤0.30 |
| Copper (Cu) | ≤0.30 | Molybdenum (Mo) | ≤0.08 |
| Niobium (Nb) | ≤0.020 | Nickel (Ni) | ≤0.30 |
| Titanium (Ti) (max) | 0.03 | Vanadium (Vi) | ≤0.02 |
EN 10028 P355GH Mechanical Properties
| Grade | Type | Thickness (mm) |
Yield Strength MPa (min) |
Tensile Strength MPa |
Elongation % (min) |
Impact Energy (KV J) (min) |
||
| -20° | 0° | +20° | ||||||
| P355GH | Normalized | ≤ 16 16> to ≤40 40> to ≤60 60> to ≤100 100> to ≤150 150> to ≤250 |
355 345 335 315 295 280 |
510 to 650 510 to 650 460 to 580 490 to 630 480 to 630 470 to 630 |
20 20 20 20 20 20 |
27 27 27 27 27 27 |
34 34 34 34 34 34 |
40 40 40 40 40 40 |
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