Special Steel 42CrMo/1.7225 Working Mould Steel

Special Steel 42CrMo/1.7225 Working Mould Steel

Ref Price:: $300.00 - 500.00 / m.t.

Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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The details of our Steel

1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard

2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate

3. Heat treatment:

Normalized / Annealed / Quenched+Tempered

4. Quality assurance:

All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

Product information

Chemical Composition(%)

C	Si	Mn	Cr	Mo	Ni	P	S
0.38-0.45	0.17-0.37	0.50-0.80	0.90-1.20	0.15-0.25	≤0.030	≤0.030	≤0.030

Standard

GB	AISI	DIN	JIS	ISO
42CrMo	4140	42CrMo4	SCM440	42CrMo4

Available Size

Rolled round bar	φ20-120mm × L
Forged round bar	φ130-195mm × L

Heat Treatment

Item	Temperature℃	Hardness
quenching	840-880	HRC32-34
tempering	580	HRC32-34
quenching	900	HRC54-60
tempering	150-180	HRC54-60

Applications: The steel is suitable for manufacturing requires a certain strength and toughness of large and medium-sized plastic mold

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Special Steel 42CrMo/1.7225 Working Mould Steel

Q:What are the main characteristics of high-speed steel forgings?: The main characteristics of high-speed steel forgings include high hardness, excellent wear resistance, good toughness, and the ability to retain their hardness and strength at elevated temperatures. They also exhibit good machinability, high dimensional stability, and resistance to deformation under heavy loads.

Q:How does special steel contribute to the energy sector?: Special steel plays a critical role in the energy sector, contributing significantly to its efficiency, reliability, and safety. Firstly, special steel is used in the construction of pipelines and storage tanks, which are crucial components of the oil and gas industry. These pipelines need to withstand high pressures, extreme temperatures, and corrosive environments, and special steel provides the necessary strength and resistance to ensure their integrity and prevent leakage. In addition, special steel is utilized in the manufacturing of turbine blades and other components in power generation plants. These plants require materials that can withstand the high temperatures and pressures generated by the combustion of fossil fuels or the use of nuclear energy. Special steel's heat-resistant properties make it ideal for these applications, improving the overall efficiency and longevity of power plants. Furthermore, special steel is used in the production of wind turbines, which are rapidly becoming an essential source of renewable energy. The blades, tower structures, and gearboxes of wind turbines are subjected to significant stress and strain, and special steel provides the necessary strength and durability to withstand these conditions. By using special steel, wind turbines can operate reliably and efficiently, contributing to the growth of clean energy. Moreover, the energy sector relies on special steel for its infrastructure, such as transmission towers and substations. These structures need to support heavy loads and withstand extreme weather conditions while maintaining electrical conductivity. Special steel's high strength and corrosion resistance make it a suitable material for these applications, ensuring the reliable transmission and distribution of electricity. Overall, special steel plays a crucial role in the energy sector by providing the necessary strength, durability, and resistance to extreme conditions. Its use in pipelines, power generation plants, wind turbines, and infrastructure improves the efficiency, reliability, and safety of the energy sector, facilitating the production and distribution of both conventional and renewable energy sources.

Q:What is the purpose of annealing in special steel production?: The aim of annealing in the production of special steel is to enhance the mechanical characteristics and overall quality of the steel. Annealing involves subjecting the steel to a particular temperature and gradually cooling it, typically in a controlled setting. This procedure aids in relieving any internal stresses or strains that might have developed during previous manufacturing processes like rolling or forging. During the annealing process, the microstructure of the steel goes through changes, resulting in a more refined and uniform material. The process allows for the redistribution of atoms, thereby eliminating defects, improving grain structure, and enhancing the steel's toughness, ductility, and machinability. Furthermore, annealing helps in reducing the hardness of the steel, rendering it easier to work with and shape. It also enhances the steel's resistance to cracking and increases its ability to withstand corrosion and other environmental factors. In certain special steel alloys, annealing can also be employed to achieve desired physical properties such as increased hardness or improved magnetic characteristics. Ultimately, the objective of annealing in the production of special steel is to optimize the steel's properties and ensure it meets the specific requirements of its intended application, be it in industries such as automotive, aerospace, or manufacturing.

Q:How is special steel used in the production of pressure vessels?: Special steel is used in the production of pressure vessels due to its high strength, durability, and resistance to corrosion. It ensures the vessel can withstand high internal pressure and harsh operating conditions, ensuring safety and reliability.

Q:What are the different cryogenic grades of special steel?: Specifically designed for use in extremely low temperature environments, there are several cryogenic grades of special steel available. These grades have been developed to retain their mechanical properties and prevent brittleness at cryogenic temperatures, making them ideal for applications such as LNG storage tanks, aerospace equipment, and low-temperature chemical processes. Among the commonly used cryogenic grades is the 300 series stainless steel, particularly types 304 and 316. These stainless steels contain nickel, which enhances their cryogenic toughness and ability to withstand thermal stress. Consequently, they are frequently employed in the construction of cryogenic storage vessels and piping systems. Another popular cryogenic grade is the 9% nickel steel, which is alloyed with approximately 9% nickel. This alloy provides excellent low-temperature toughness and ductility. As a result, it is often chosen for constructing LNG storage tanks, capable of withstanding the extremely cold temperatures required for the storage and transportation of liquefied natural gas. In addition, there are special low-temperature carbon steels, such as ASTM A350 LF2 and ASTM A333 Grade 6, which are engineered to maintain their toughness and impact resistance at cryogenic temperatures. These steels find extensive use in low-temperature applications, including cryogenic piping systems and equipment for the oil and gas industry. In conclusion, the various cryogenic grades of special steel encompass stainless steels (such as the 300 series stainless steel), 9% nickel steel, and low-temperature carbon steels (like ASTM A350 LF2 and ASTM A333 Grade 6). Each grade has been specifically designed to endure the challenges presented by extremely low temperatures while retaining their mechanical properties and resistance to brittleness.

Q:Can special steel be used in the production of gears?: Yes, special steel can be used in the production of gears. Special steel, such as alloy steel or tool steel, is often preferred in gear manufacturing due to its high strength, wear resistance, and ability to withstand heavy loads and high temperatures. This steel type ensures gears have the necessary durability and performance required for various applications.

Q:What are the different methods for improving the heat resistance of special steel?: There are several methods for improving the heat resistance of special steel. These methods include: 1. Alloying: One of the most common methods is to alloy the steel with certain elements that enhance its heat resistance. For example, the addition of chromium, nickel, or molybdenum can significantly improve the steel's ability to withstand high temperatures. 2. Heat treatment: Heat treatment processes such as annealing, quenching, and tempering can be employed to enhance the heat resistance of special steel. These processes help in refining the microstructure of the steel and improving its mechanical properties, including heat resistance. 3. Surface modification: Applying specialized coatings or surface treatments can also improve the heat resistance of special steel. For instance, processes like nitriding, carburizing, or ceramic coating can create a protective layer on the surface of the steel, preventing oxidation and improving its ability to withstand high temperatures. 4. Grain refinement: Controlling the grain size of the steel through processes like grain refinement or recrystallization can enhance its heat resistance. Smaller grain sizes reduce the diffusion of atoms within the material, making it more resistant to high temperatures. 5. Precipitation hardening: Precipitation hardening is a technique where small particles are formed within the steel matrix, strengthening the material and improving its resistance to heat. This method involves a specific heat treatment process that enables the formation of these particles. 6. Controlled cooling: Optimizing the cooling process after heat treatment can also improve the heat resistance of special steel. By controlling the cooling rate, the formation of undesirable phases or microstructural defects can be minimized, ensuring better heat resistance. 7. Material selection: Choosing the right type of special steel with inherently high heat resistance properties is another method for improving heat resistance. For example, stainless steel, tool steel, or superalloys are known for their excellent heat resistance and are often selected for applications where high temperatures are involved. It is worth noting that the selection of the appropriate method or combination of methods for improving heat resistance depends on the specific requirements and constraints of the application.

Q:What is the significance of alloying elements in special steel?: Alloying elements play a crucial role in special steel as they enhance the mechanical properties, corrosion resistance, and overall performance of the steel. These elements are added in specific proportions to alter the microstructure and create desired properties such as increased strength, hardness, toughness, and heat resistance. Additionally, alloying elements can improve the steel's ability to withstand extreme conditions, such as high temperatures or corrosive environments. Overall, the presence of alloying elements in special steel allows for the production of tailor-made materials that meet specific application requirements in industries such as automotive, aerospace, and construction.

Q:How does special steel perform in low-temperature environments?: Special steel, otherwise known as low-temperature steel, has been specifically designed to excel in environments with low temperatures. One of the main advantages of special steel is its exceptional ability to maintain its strength and toughness, even in extremely cold conditions. This is particularly crucial in industries like oil and gas, where equipment and structures are constantly exposed to extreme cold. When regular steel is subjected to low temperatures, it tends to become brittle and lose its mechanical properties, making it susceptible to cracking and failure. However, special steel is formulated with specific alloying elements such as nickel, chromium, and molybdenum, which enhance its performance in low-temperature scenarios. These alloying elements work to prevent the formation of brittle phases, allowing the steel to retain its toughness and ductility, even at sub-zero temperatures. Special steel finds extensive usage in cryogenic applications, where temperatures can plummet as low as -196 degrees Celsius (-320 degrees Fahrenheit). It is commonly employed in the construction of cryogenic storage tanks, liquefied natural gas (LNG) carriers, and other components that come into contact with extremely cold fluids or gases. In low-temperature environments, special steel not only maintains its mechanical properties but also exhibits remarkable resistance against corrosion. This is particularly crucial since low temperatures can exacerbate corrosion issues in many materials. The high nickel content present in special steel contributes to its corrosion resistance by forming a protective oxide layer that prevents the steel from corroding, even in harsh conditions. Overall, special steel has been purposefully engineered to withstand the challenges presented by low-temperature environments. Its ability to preserve strength, toughness, and corrosion resistance makes it an ideal choice for various industries that operate in extreme cold conditions.

Q:Can special steel be used in the chemical processing equipment manufacturing industry?: Yes, special steel can be used in the chemical processing equipment manufacturing industry. Special steel is often preferred in this industry due to its high corrosion resistance, ability to withstand high temperatures, and excellent mechanical properties, making it suitable for handling various corrosive chemicals and harsh operating conditions.

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