SA387GR91CL2 and P91 are different nomenclature for the same material.
SA387GR91Cl2 is a material grade of alloy steel, which is a material defined in ASME (American Society of Mechanical Engineers) specifications, and is commonly used in high-temperature and high-pressure applications. It is one of the material specifications in the ASME P (Pressure Vessel) code.
P91 is a common alias for SA387GR91Cl2. This alias is mainly derived from the ASTM (American Society for Testing and Materials) standard, which specifies the requirements for the chemical composition and mechanical properties of alloy steels. The code P91 refers to the ninth component of P steel, where the "P" represents the name of the alloy steel, and the "91" represents the alloying elements and alloy proportions contained in the alloy steel.
Why would itWugang Xinze SteelIs there such a different way of naming it?This is because of the differenceLi Tangcountries, organizations, or standard machinesWhen naming and numbering materials, the structure is adoptedDifferent systems and regulations. In different standards and specifications, the same material may have different names. For example, in ASME specifications, steel materials usually start with SA, while in ASTM standards, steel materials usually start with the letter P.
SA387GR91Cl2 (or P91) is a high-quality superalloy steel with high strength, excellent heat resistance and oxidation resistance. It is commonly used in the manufacture of pipes, vessels, furnaces and other equipment at high temperature and high pressure, and is widely used in petrochemical, electric power, nuclear energy and other industries. Due to its excellent properties, SA387GR91CL2 (or P91) is widely used in engineering and is considered an important material.
To sum up, SA387GR91CL2 and P91 are different nomenclature for the same material, which come from different standards and specifications. Whether this material is called SA387GR91Cl2 or P91, it represents the same alloy steel material.
SA387GR91Cl2 (or P91) is an alloy steel used under high temperature and high pressure with excellent properties and characteristics. I will continue to explain why SA387GR91CL2 is also called P91.
1.Material chemical composition: The chemical composition of SA387GR91Cl2 and P91 is the same. According to ASTM standards, the chemical composition requirements for P91 alloy steels include: carbon (c) maximum of 008%, chromium (Cr) is about 8-9%, and molybdenum (Mo) is about 085-1.05%, manganese (MN) is about 030-0.60%, silicon (Si) is about 020-0.50%, phosphorus (p) maximum is 0020%, sulfur (s) maximum of 0010%, nickel (Ni) is about 040-0.70%, copper (Cu) is about 030-0.60%, aluminum (Al) is about 002%, nitrogen (n) maximum is 003%, titanium (Ti) maximum is 001%, vanadium (v) is about 018-0.25%, iron oxide (Fe) is the margin. Therefore, whether it is SA387GR91Cl2 or P91, its chemical composition is the same.
2.Material properties: SA387GR91Cl2 and P91 have similar mechanical properties and high-temperature properties. They all have high tensile strength, yield strength, and resistance to thermal creep. In the environment of high temperature and high pressure, SA387GR91Cl2 and P91 can maintain high material strength and stability, and have good creep resistance and oxidation resistance.
3.Material application: Due to its excellent properties, SA387GR91Cl2 (or P91) is widely used in many fields. It is mainly used in the manufacture of high-temperature and high-pressure vessels, pipes, and stoves, such as furnace components for power plants, reactors in the petrochemical industry, turbines for gas turbines, etc. The SA387GR91CL2 (or P91) is suitable for operating temperatures up to 595°C (1100°F) and is able to withstand pressure and stress at high temperatures.
To sum up, SA387GR91CL2 and P91 are the same alloy steel materials, which are called different names in different standards and specifications. Whether it is SA387GR91Cl2 or P91, they are similar in terms of chemical composition, properties and applications, and they are both high-quality alloy steel materials used in high-temperature and high-pressure environments.