Heat-resistant steel, also referred to as hot-resistant steel and creep-resistant steel, is used for equipment in which the material is loaded for a long time at higher temperatures.
This can be the case in boilers, furnaces, pressure vessels and other installations, including those used in the petrochemical industry. It is a property of steel that it will slowly but permanently deform under prolonged load at high temperatures (in excess of around 350 °C). This phenomenon is called 'crawling'. In addition, the oxidation rate at higher temperatures can increase to an unacceptable degree. Alloyed, heat-resistant steels are available which can cope with both these phenomena.
One example of heat-resistant steel is P265GH.
This type of steel is used in the manufacture of devices that must be able to withstand a high thermal load, such as boilers, pressure vessels and heat exchangers.
P stands for Pressure,
265 is the indication of the minimum yield or yield strength in N/mm² (MPa) in the smallest thickness range.
GH is the designation that refers to the properties of the material at higher temperatures. P265GH is kept in stock at Avezaat Staal in thicknesses from 4 to 150 mm. All cut products can be delivered with 3.1 and 3.2 Certificate in accordance with NEN-EN 10204.