p265gh vs p295gh
Chemical Composition Comparison
| Element | P265GH (EN 10028-2) | P295GH (EN 10028-2) | Difference Explanation |
|---|---|---|---|
| Carbon (C) | ≤ 0.20% | ≤ 0.20% | Carbon maximum is the same, but P295GH may use other alloy adjustments to enhance strength. |
| Silicon (Si) | ≤ 0.40% | ≤ 0.50% | P295GH allows slightly higher silicon content, potentially for improved high-temperature properties. |
| Manganese (Mn) | 0.80–1.40% | 1.00–1.60% | P295GH has higher manganese content to increase strength and hardness. |
| Phosphorus (P) | ≤ 0.025% | ≤ 0.025% | Phosphorus control is the same, ensuring low impurity levels. |
| Sulfur (S) | ≤ 0.015% | ≤ 0.015% | Sulfur control is the same, reducing hot brittleness. |
| Other alloying elements | May contain trace amounts of Nb, V, Ti | May contain more strengthening elements such as Mo, Cr | P295GH may use microalloying or additional alloying elements to enhance high-temperature performance. |
Mechanical Properties Comparison
| Property | P265GH | P295GH | Difference Explanation |
|---|---|---|---|
| Yield Strength (ReH) | ≥ 265 MPa | ≥ 295 MPa | P295GH has higher yield strength, suitable for higher-pressure environments. |
| Tensile Strength (Rm) | 410–530 MPa | 440–570 MPa | P295GH has a higher tensile strength range, making it structurally stronger. |
| Elongation after fracture (A) | ≥ 22% | ≥ 20% | P265GH has slightly better ductility, while P295GH focuses on strength. |
| Impact Energy (KV, Ku) | ≥ 27 J (at 0°C or 20°C) | ≥ 27 J (at 0°C or 20°C) | Impact toughness requirements are similar, but P295GH may maintain performance under higher pressure. |
Physical (Mechanical-Related) Properties and Application Comparison
| Property/Application | P265GH | P295GH | Difference Explanation |
|---|---|---|---|
| Heat Treatment Condition | Usually normalized (N) or normalized rolled | Usually normalized (N) or quenched and tempered | P295GH may require stricter heat treatment to achieve higher strength. |
| High-Temperature Performance | Suitable for low to medium-temperature pressure vessels | Suitable for higher-temperature and higher-pressure environments | P295GH maintains strength better at elevated temperatures. |
| Typical Applications | Boilers, medium-pressure vessels, pipelines | High-pressure boilers, petrochemical equipment, thick-walled vessels | P295GH is used in scenarios requiring higher mechanical loads. |
| Weldability | Good, with controlled heat input | Good, but requires stricter welding procedures | Due to higher strength, P295GH needs attention to preheating and post-weld heat treatment. |
| Standard Reference | EN 10028-2 | EN 10028-2 | Both belong to the European pressure vessel steel standard, but P295GH is a higher grade. |
P265GH P295GH Boiler Tube factory
