Products Description
Understanding the Two Grades
Both P275N and P275NH steel plates belong to the EN 10028-3 pressure vessel steel family and share the same minimum yield strength. However, they are designed for different operating conditions, which directly affects material selection.
If you're satisfied with our 30 mm steel plate p275n, p275nh, p275nl1, p275nl2, welcome to place orders with us. As one of the best Boiler Pressure Vessel Steel Plate manufacturers and suppliers in China, we have bulk hot sale products in stock at your choice. For detailed chemical composition and free sample, contact our factory now. Competitive price and good service are offered.
EN 10028-3 N is the room temperature quality, NH is for the elevated temperature quality, NL1 is for the low temperature quality and NL2 is for the special low temperature quality.
These steel grades are characterized by a minimum yield strength of 235 - 355 MPa and by good weldability. These grades are used above all for manufacturing boilers, pressure vessels and pipes transporting hot liquids. The user of these steel grades must make sure that his calculation, design and processing methods are appropriate for the material. The grades of this series offer good cold and hot-forming properties.
Key Difference: Temperature Service Range
The most important distinction lies in temperature resistance:
| Feature | P275N | P275NH |
|---|---|---|
| Delivery Condition | Normalized | Normalized |
| Intended Service | Normal temperature | Elevated temperature |
| Thermal Stability | Standard | Enhanced |
P275NH is specifically developed for pressure vessels exposed to higher operating temperatures, such as boilers and thermal equipment.
Mechanical Properties Comparison
Despite having similar strength levels, P275NH undergoes additional quality control to ensure performance under heat exposure.
For projects operating at standard temperatures, P275N remains sufficient and more cost-effective.
Application-Based Selection
- Choose P275N steel plate if:
Operating temperature is within normal range
Cost efficiency is important
Application involves standard pressure vessels
- Choose P275NH steel plate if:
Equipment operates at elevated temperatures
Long-term thermal stability is critical
P275N and P275NH are both reliable pressure vessel steels, but they serve different purposes. Understanding operating temperature requirements is essential when choosing between them.
GNEE STEEL offers both P275N and P275NH steel plates, supporting customers with technical guidance and flexible supply options.
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