P235GH and P265GH are two non-alloy steel grades with specified elevated temperature properties that are commonly used in high-temperature applications such as boilers, pressure vessels, and heat exchangers. Here are some of the differences between P235GH and P265GH:
1. Chemical composition: P235GH and P265GH have different chemical compositions, with P265GH containing higher amounts of carbon and manganese than P235GH. This provides greater strength and toughness to P265GH.
2. Minimum yield strength: The minimum yield strength of P235GH is 235 MPa, while the minimum yield strength of P265GH is 265 MPa. This means that P265GH has a higher yield strength than P235GH.
3. Application: P235GH is commonly used in low-pressure applications, while P265GH is used in high-pressure applications. P265GH is also suitable for higher temperature applications.
4. Availability: P235GH is more widely available than P265GH, which may impact its suitability for certain applications in certain regions.
Overall, the choice of whether to use P 235GHor P265GH depends on the specific requirements of the application, including the pressure, temperature, and other operating conditions. While both grades have similar properties, P265GH is generally chosen for its higher strength and suitability for higher pressure and temperature applications, while P235GH is chosen for its availability and suitability for lower pressure applications.
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