HP265 pressure vessel steel plate is a low-carbon structural steel grade specified under the Chinese standard GB/T 6653, which is specially developed for the manufacturing of welded gas cylinders and pressure vessels such as LPG cylinders, propane tanks, and industrial gas containers.
HP265 pressure vessel steel plate
As a widely used material in the gas storage industry, HP265 combines moderate strength, excellent ductility, and superior weldability, making it an ideal choice for safe and efficient cylinder production.
GB HP265 Steel Plate Standard and Classification
HP265 steel plate belongs to the GB (Guobiao) standard system:
Standard: GB/T 6653
Grade: HP265
Category: Gas cylinder steel / Pressure vessel steel
Delivery condition: Hot rolled
This makes HP265 suitable for global applications and export-oriented manufacturing.
GB HP265 Steel Plate Chemical Composition
The chemical composition of HP265 steel plate is strictly controlled to ensure good forming and welding performance.
| Element | Content (%) |
|---|---|
| C (Carbon) | ≤ 0.16 |
| Si (Silicon) | ≤ 0.30 |
| Mn (Manganese) | 0.50 – 1.20 |
| P (Phosphorus) | ≤ 0.025 |
| S (Sulfur) | ≤ 0.015 |
Low carbon and impurity elements significantly reduce the risk of cracking during forming and welding.
GB HP265 Steel Plate Mechanical Properties
HP265 pressure vessel steel plate provides stable mechanical performance required for pressure-bearing equipment.
| Property | Value |
|---|---|
| Yield Strength | ≥ 265 MPa |
| Tensile Strength | 410 – 530 MPa |
| Elongation | ≥ 26% |
GB HP265 Steel Plate Main Applications
HP265 steel plate is primarily used in:
1. Welded LPG Cylinders
The most common application, ensuring safe storage of propane and butane gases.
2. Industrial Gas Cylinders
Used for oxygen, nitrogen, and compressed air storage.
3. Small and Medium Pressure Vessels
Suitable for tanks requiring good weldability and moderate strength.
4. Energy and Chemical Storage Equipment
Applied in environments where pressure resistance and durability are required.
Why GB HP265 Steel Plate is Widely Used
1. Excellent Formability
HP265 supports deep drawing and cold forming, reducing manufacturing defects.
2. Good Weldability
Low P and S content ensures high-quality weld seams and reduces leakage risk.
3. Cost-Effective Performance
Compared with higher grades like HP295, HP265 provides sufficient performance at a lower cost.
4. Stable Quality and Safety Compliance
Fully compliant with GB/T 6653, ensuring reliability in pressure vessel applications.
GB HP265 Steel Plate Supply Range
| Thickness | Width | Length | Delivery |
|---|---|---|---|
| 2.0 – 12 mm | 1000 – 2500 mm | 2000 – 12000 mm | Hot Rolled |
Custom specifications are available based on project requirements.
GB HP265 pressure vessel steel plate is a proven and reliable material for gas cylinders and pressure vessels. With its balanced mechanical properties, excellent processing performance, and cost advantages, it is widely trusted by manufacturers worldwide.
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What is HP265 steel plate used for?
HP265 steel plate is mainly used for manufacturing refillable gas cylinders and pressure vessels, especially in applications involving cyclic pressure such as refrigerant cylinders, air conditioning storage tanks, and automotive air systems, where good fatigue resistance is required.
What is the main advantage of HP265 cylinder steel?
The main advantage of HP265 steel is its excellent fatigue resistance under repeated pressure conditions, combined with good formability and stable chemical composition, making it ideal for long-term reusable gas containers.
What is the difference between HP265 and HP295 steel?
HP265 focuses on fatigue resistance and is suitable for medium-pressure, cyclic-use containers, while HP295 offers higher strength and is mainly used for LPG cylinders that require higher safety margins.
Is HP265 suitable for LPG gas cylinders?
HP265 can be used for LPG cylinders in some cases, but it is generally not recommended, as HP295 is the industry-preferred material due to its higher strength and better safety performance.
What is the typical thickness of HP265 steel plate?
HP265 steel plate is usually supplied in thicknesses ranging from 2.0 mm to 3.0 mm, with tight tolerance control to ensure consistent forming performance and pressure stability.
Is HP265 steel easy to weld?
Yes, HP265 steel has good weldability due to its low carbon content and controlled alloy composition, resulting in low cracking risk and stable weld seam quality.
What is the equivalent grade of HP265 steel?
HP265 is commonly equivalent to EN standard P265NB and ISO BW265, which are widely used in pressure vessel and cylinder manufacturing in international markets.
Can HP265 steel be used for high-pressure applications?
HP265 is suitable for medium-pressure environments, but for high-pressure gas cylinders, higher strength grades like HP325 or HP365 are recommended.
What surface condition is available for HP265 steel?
HP265 steel is typically supplied in hot rolled, pickled and oiled, or slit strip conditions, with pickled surfaces preferred for better forming and welding quality.