P355M Boiler Pressure Vessel Steel
P355M boiler steel plate complies with EN10028-5 standard. P355M vessel steel plate is a weldable fine grain steel, usually delivered in thermomechanical rolled condition, with a minimum yield strength of 355 MPa.
P355M boiler plate has good weldability and excellent notch toughness, and is widely used by industrial boiler and pressure vessel manufacturers who provide manufacturing support for oil, gas, petrochemical industries, etc.
P355M steel boiler plate chemical composition
| Element | Min | Max |
|---|---|---|
| (CEV) | - | 0.4000 |
| (CEV) | - | 0.3900 |
| (CEV) | - | 0.3900 |
| (Cr+Cu+Mo) | - | 0.6000 |
| Vanadium (V) | - | 0.1000 |
| Titanium (Ti) | - | 0.0500 |
| Nickel (Ni) | - | 0.5000 |
| Niobium (Nb) | - | 0.0500 |
| Molybdenum (Mo) | - | 0.2000 |
| Nitrogen (N) | - | 0.0150 |
| Aluminum (Al) | 0.0200 | - |
| Sulfur (S) | - | 0.0100 |
| PhOsphorus (P) | - | 0.0250 |
| Manganese (Mn) | - | 1.6000 |
| Silicon (Si) | - | 0.5000 |
| Carbon (C) | - | 0.1400 |
P355M pressure vessel plate mechanical property
| Property | Temperature | Value | Condition | Related Standards | Shape | Comment |
|---|---|---|---|---|---|---|
|
Elastic modulus |
190 - 210 GPa |
Typical for Steel |
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|
Elongation |
17.3 % |
Predicted Value, A200 |
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|
18.4 % |
Predicted Value, A80 |
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|
20.4 % |
Predicted Value, A80 Transverse |
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|
21.1 % |
Predicted Value, A5 |
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|
21.4 % |
Predicted Value, Transverse |
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|
22.5 % |
Predicted Value, A50 |
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|
20 °C |
22 % |
thermomechanically rolled |
EN 10028-5 |
Flat |
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|
Tensile strength |
20 °C |
450 - 610 MPa |
thermomechanically rolled |
EN 10028-5 |
Flat |
|
|
Yield strength |
254.6 MPa |
Predicted Value, RP1 |
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|
318.5 MPa |
Predicted Value, RP1 Transverse |
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|
359.6 MPa |
Predicted Value, RP02 |
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|
393.3 MPa |
Predicted Value, Transverse |
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|
454.5 MPa |
Predicted Value, RP02 Transverse |
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|
468.2 MPa |
Predicted Value, RP05 |
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|
493.5 MPa |
Predicted Value, RP002 |
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|
20 °C |
345 MPa |
thermomechanically rolled |
EN 10028-5 |
Flat |
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|
20 °C |
355 MPa |
thermomechanically rolled |
EN 10028-5 |
Flat |
P355M PVQ steel plate thermal properties
| Temperature (°C) | 32 | 454 | 368 |
| Modulus of elasticity (GPa) | - | 139 | - |
| Mean coefficient of thermal expaion ×10-6/(°C) | - | - | 23 |
| Thermal conductivity (W/m·°C) | - | 13.3 | 12.2 |
| Specific thermal capacity (J/kg·°C) | - | 241 | - |
| Specific electrical resistivity (Ω mm²/m) | 0.44 | - | - |
| Deity (kg/dm³) | - | - | 111 |
| Poisson's coefficient, ν | - | - | 334 |
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