P355N Boiler Pressure Steel Sheet
P355N steel boiler plate is a low-carbon steel with a carbon content of less than 20%. P355N Boiler Plate Steel has good toughness and process performance. The maximum tensile strength of P355N pressure vessel plate is 650Mpa, and the elongation is greater than 20%.
P355N pressure vessel steel plate is used in the petroleum, chemical, power plant, boiler and other industries, and is used to produce reactors, heat exchangers, separators, spherical tanks, oil and gas cylinders, liquefied petroleum gas tanks, nuclear reactor pressure vessels, boiler drums, liquefied petroleum gas cylinders, etc.
P355N pressure vessel plate material chemical composition
| Element | Max % | Element | max % |
| C | 0.20 | Cu | 0.30 |
| Si | 0.50 | Mo | 0.08 |
| Mn | 0.90-1.70 | N | 0.02 |
| P | 0.03 | Nb | 0.05 |
| S | 0.03 | Ni | 0.50 |
| AL | 0.020 | Ti | 0.03 |
| Cr | 0.30 | V | 0.10 |
| Nb+Ti+V | 0.12 |
P355N vessel steel plate mechanical property
| Property | Temperature | Value | Comment |
|---|---|---|---|
|
Charpy impact energy |
-20 °C |
30 J |
min. | for thickness 6-16 mm | Transverse |
|
-20 °C |
45 J |
min. | for thickness 6-16 mm |
|
|
0 °C |
40 J |
min. | for thickness 6-16 mm | Transverse |
|
|
0 °C |
65 J |
min. | for thickness 6-16 mm |
|
|
20 °C |
50 J |
min. | for thickness 6-16 mm | Transverse |
|
|
20 °C |
75 J |
min. | for thickness 6-16 mm |
|
|
Elongation |
18 % |
min. | for thickness 1.7-3 mm | Transverse, A80 |
|
|
22 % |
min. A5.65√So | for thickness 3-16 mm | Transverse |
||
|
Tensile strength |
490 - 630 MPa |
for thickness 1.7-16 mm | Transverse |
|
|
Yield strength |
355 MPa |
min. | for thickness 1.7-16 mm | Transverse |
P355N boiler steel plateimpact test
| Type | Usual Dekivery Condition |
Norminal Thickness (mm) |
Impact Energy KV min[J] at temperature [°C] | |||||||||
| Longitudinal | Longitudinal | |||||||||||
| -50 | -40 | -20 | 0 | +20 | -50 | -40 | -20 | 0 | +20 | |||
| P355N | N | 5-150 | - | - | 40 | 47 | 55 | - | - | 20 | 27 | 31 |
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