HP295 and HP345 steel plates are both manufactured under the GB/T 6653 standard and are widely used for welded gas cylinders and pressure vessels.
HP345 steel plates
While they share similar processing characteristics and application fields, their key differences lie in strength level, pressure resistance, and application scope.
For projects requiring higher safety standards and load-bearing capacity, HP345 steel plate is generally the preferred option.
Overview of HP395 And HP345
| Property | HP295 Steel Plate | HP345 Steel Plate |
|---|---|---|
| Yield Strength | ≥295 MPa | ≥345 MPa |
| Tensile Strength | 440–560 MPa | 510–620 MPa |
| Strength Level | Medium | Medium–High |
| Pressure Resistance | Moderate | Higher |
| Application Range | Low-pressure cylinders | Medium & high-pressure cylinders |
| Cost | Lower | Slightly higher |
The most significant difference is the higher yield strength of HP345, which provides better resistance to deformation and improved safety under pressure.
Mechanical Performance of HP395 And HP345
HP295 steel plate is suitable for general-purpose gas cylinders operating under relatively lower pressure. It offers stable performance and cost efficiency.
In contrast, HP345 steel plate provides higher yield and tensile strength, allowing it to withstand greater internal pressure and mechanical stress. This makes it more suitable for applications where structural reliability and safety are critical.
| Property | HP295 | HP345 |
|---|---|---|
| Yield Strength | ≥295 MPa | ≥345 MPa |
| Tensile Strength | 440–560 MPa | 510–620 MPa |
| Elongation | ≥20% | ≥17–21% |
Application Differences of HP395 And HP345
| Application Type | HP295 | HP345 |
|---|---|---|
| Household LPG Cylinders | Suitable | Suitable |
| Industrial Gas Cylinders | Limited | Widely used |
| High-Pressure Gas Storage | Not recommended | Recommended |
| Vehicle Gas Tanks | Not suitable | Suitable |
| Pressure Vessels | Basic applications | Medium to high-pressure use |
HP295 is mainly used for standard or low-pressure cylinders, while HP345 is better suited for industrial and high-pressure environments.
Processing and Weldability of HP395 And HP345
Both HP295 and HP345 steel plates offer good fabrication performance, including welding and forming.
| Feature | HP295 | HP345 |
|---|---|---|
| Weldability | Good | Good |
| Formability | Excellent | Excellent |
| Processing Difficulty | Low | Low |
Despite its higher strength, HP345 maintains excellent weldability and formability, making it suitable for efficient large-scale production.
What is cost Between the HP395 And HP345
HP295 steel plate has a lower initial cost and is suitable for projects with limited budget or lower performance requirements.
HP345 steel plate, although slightly more expensive, provides greater durability, higher safety margins, and longer service life, making it more cost-effective in demanding applications.
HP345 steel plate
Both HP295 and HP345 steel plates are important materials for gas cylinder manufacturing. However, due to its higher strength and broader application range, HP345 steel plate is the more advanced and reliable choice, especially for medium and high-pressure gas storage systems.
For manufacturers aiming to improve product safety, performance, and long-term reliability, HP345 steel plate is the recommended solution.
If you are looking for a stable and high-quality supply of HP345 steel plate, provide your requirements such as thickness, width, quantity, and delivery destination. A complete quotation and technical support can be arranged accordingly.
Contact now to get HP345 Gas Cylinder Steel Plate Quote
Does HP345 gas cylinder steel support third-party inspection?
Absolutely. GNEE supplies HP345 gas cylinder steel with full traceability and supports inspections from globally recognized agencies to meet project and tender requirements.
What is the difference between HP345 gas cylinder steel and HP295?
Compared to HP295, HP345 gas cylinder steel offers higher strength and better pressure resistance, making it more suitable for demanding applications and reducing material thickness requirements.
How does GNEE ensure the quality of HP345 gas cylinder steel?
GNEE implements strict quality control from raw materials to final inspection, including ultrasonic testing and mechanical property verification for HP345 gas cylinder steel.
Is HP345 gas cylinder steel suitable for export projects?
Yes, HP345 gas cylinder steel from GNEE is widely exported and meets international project requirements in regions such as the Middle East, Southeast Asia, and South America.
What should be considered when selecting HP345 steel?
When choosing HP345 steel, consider cylinder pressure rating, wall thickness, welding method, and environmental exposure. While HP345 provides superior strength, proper fabrication, inspection, and handling are crucial to fully leverage its mechanical and safety advantages.
What should be considered when selecting HP345 steel?
When choosing HP345 steel, consider cylinder pressure rating, wall thickness, welding method, and environmental exposure. While HP345 provides superior strength, proper fabrication, inspection, and handling are crucial to fully leverage its mechanical and safety advantages.
What are the benefits of using HP345 steel for gas cylinders?
Using HP345 steel ensures enhanced safety, long-term durability, and compliance with GB/T 6653 standards. Its high strength allows for thinner walls while maintaining pressure resistance, which reduces material cost and weight without compromising safety. It also provides consistent performance in industrial and outdoor environments.
What is HP345 steel plate?
HP345 steel plate is a high-performance steel specifically designed for manufacturing welded pressure vessels, including LPG and industrial gas cylinders. It complies with the GB/T 6653 standard and offers a balanced combination of strength, ductility, and weldability, making it ideal for safe and durable cylinder production.