Introduction
Today, Japanese boilers and pressure vessels use CrMo steel plates to build components, products, and structures that hold various types of liquids and gases. This type of steel plate is known for its corrosion and oxidation resistance, high strength, and good weldability. It is also resistant to most acids, alkalis, and salt solutions and shows excellent fire- and impact-resistance. As such, CrMo steel plate is a popular material choice for Japanese boiler and pressure vessel manufacturing.
CrMo Steel
CrMo steel is a certain type of low-alloy steel known for its higher strength and toughness. It was first developed in the 1940s and has seen several changes in composition and applications since then. CrMo steel contains chromium and molybdenum as its main alloying elements. Because of this, it is often referred to as an “alloy steel”.
The chromium in the alloy provides several important properties. It increases the hardenability of the steel, allowing it to be used in the applications of boiler and pressure vessels. It also helps to keep the steel from corroding, as it forms an adherent, protective layer on the surface of the steel when heated. The molybdenum gives the steel higher strength and toughness and makes it more resistant to heat.
Applications
CrMo steel plate is commonly used in the construction of Japanese boilers and pressure vessels due to its good weldability and wide range of applications. It is suitable for both large-scale and small-scale boiler and pressure vessels, as it can withstand high temperatures and pressures. Additionally, CrMo steel can be used to build components, such as pipes, fittings, and valves, that are exposed to harsh weather conditions.
CrMo steel is also used in other applications where strength and resistance to corrosion, oxidation, and heat are important. It is often used in the automotive and shipbuilding industries for its good properties, as well as for tools and machines used in construction and engineering. CrMo steel can also be used as a reinforcement steel for concrete structures.
Specifications
When looking to buy CrMo steel plate for Japanese boilers or pressure vessels, it is important to understand the Japanese standard specifications. Japan’s industrial standards, such as JIS G 3103 and JIS G 3106, detail the requirements for CrMo steel plate and its related products.
These standards dictate the type, form, size, and shape of steel plates, as well as their mechanical properties and corrosion-resistance performance. They also detail the required tests, including tensile strength, impact resistance, and hydrostatic pressure testing. All of these tests are used to ensure that the steel plate meets the necessary safety and quality standards.
Conclusion
CrMo steel plates are commonly used in the construction of Japanese boilers and pressure vessels. This type of steel has good weldability, high strength, and good resistance to corrosion and oxidation. It also has excellent fire- and impact-resistance. Additionally, there are Japanese standards that dictate the composition, size, shape, and mechanical strength of CrMo steel plate. When selecting CrMo steel plate for Japanese boilers or pressure vessels, it is important to ensure that it meets these standards.
