DIN 17155 is a standard for pressure vessel steel plates. These steel plates and strips exhibit properties at higher temperatures, locally up to 600°C, under time load conditions.
The chemical composition of the DIN 17155 standard mainly includes carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), chromium (Cr), molybdenum (Mo), nickel (Ni), copper ( Cu) and other elements. The content of these elements varies depending on the specific steel plate type and application. Generally speaking, the carbon content has an important impact on the strength and hardness of the steel plate. Silicon can improve the strength and corrosion resistance of the steel plate. Manganese can enhance the strength and toughness of the steel plate. Phosphorus and sulfur have adverse effects on the performance of the steel plate. Therefore Its content needs to be controlled. The addition of alloying elements such as chromium, molybdenum, nickel and copper can further improve the corrosion resistance and high temperature performance of steel plates.
Specifically, the DIN 17155 standard stipulates the chemical composition range that different grades of steel plates should meet to ensure that the steel plates have the required mechanical properties and process properties. For example, some grades may require lower carbon content to improve weldability, while others may require the addition of specific alloying elements to improve corrosion resistance or high-temperature strength.
DIN 17155 standard steel plates are usually delivered in normalized form and are produced using the oxygen top-blown converter method. Normalizing is a heat treatment process that adjusts the structure and properties of steel by heating the steel to its austenite region and cooling it in air. This production method can ensure that the steel plate has the required mechanical properties and process properties to meet the requirements for use in high-temperature working environments.
The characteristics of the DIN 17155 standard are mainly reflected in the following aspects:
1. High-quality chemical composition design: DIN 17155 standard has strict requirements for the chemical composition of steel plates, by accurately controlling the content of carbon, silicon, manganese, phosphorus, sulfur and other elements, and adding appropriate amounts of chromium, molybdenum, nickel, copper and other alloys. elements to ensure that the steel plate has excellent mechanical properties and corrosion resistance.
2. Strict production process control: It is produced using the oxygen top-blown converter method. Through normalizing and other heat treatment processes, the steel plate structure is uniform and dense, with good strength and toughness. At the same time, the production process parameters are strictly controlled to ensure the stability and reliability of steel plate quality.
3. Wide range of applications: DIN 17155 standard steel plates are suitable for manufacturing steam boiler equipment, pressure vessels, large pressure pipes and similar components, especially suitable for environments working at higher temperatures. Therefore, it is widely used in petroleum, chemical, natural gas, electric power and other industries.
4. Good weldability and processability: DIN 17155 standard steel plate has good weldability and processability, and can meet the manufacturing needs of various complex components. At the same time, its excellent low-temperature impact toughness also enables it to maintain good performance in cold environments.
5. High safety and reliability: Since the DIN 17155 standard has strict requirements for the production and quality of steel plates, the steel plates produced using this standard have high safety and reliability, ensuring that the equipment will operate for a long time. Maintain stable performance.
The DIN 17155 standard has a wide range of applications, mainly used in the manufacture of boilers, medium and high temperature heat-resistant pressure vessels, heat exchangers, spherical tanks,
