DIN1.7225 Alloy Structural Steel Rod 4140 Special Steel

DIN1.7225 Alloy Structural Steel Rod 4140 Special Steel

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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(%) of 4140 round steel	C	Si	Mn	P	S	Cr	Mo
	0.38-0.45	≤0.40	0.60-0.90	≤0.035	≤0.035	0.90-1.20	0.15-0.30
Specification of 4140 round steel	Hot Rolled: Dia.(mm)L(mm)=14-2002000-6000
	Forged: Dia.(mm)L(mm)=210-8002000-6000
Application of 4140 round steel	(1) Commonly used for manufacturing 35CrMo higher than the required strength, large parts of the important sectional dimensions, such as axis, gear, connecting rod, transmission gears, the supercharger gear, engine cylinder, spring, spring clamps, 12-2000mm oil pipe fittings, fishing tools and instead of containing nickel steel high. (2) For main shaft of steamer,boly for 400 °C. Hummar shank.
Characteristic of 4140 round steel	(1) Chromium molybdenum high tensile steel with yield strength of 550N/mm2. (2) Chromium renders steel oil hardenable and increase hardenability. (3) Weldability suffers with increasing chromium content. (4) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum. (5) Molybdenum significantly reduces temper brittleness.
Heat Treatment of 4140 round steel	Forging:1100~900°C Normalization:860~880°C Subcritical Annealing:680~720°C Isothermal Annealing:830~900 670x3h°C Hardening:830~860 oil Tempering:550~650°C
Mechanical Properties of 4140 round steel	Tensile str. (N/mm2):1080 Yield point (N/mm2):930 Elongation (%):12 Contraction (%):45 Impack work (J/cm2):63 Hardness (HB):217
Delivery Condition of 4140 round steel	hot rolled, black surface, annealed
Payment Term of 4140 round steel	L/C at sight,T/T,30% in advance,70% before the shipment

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DIN1.7225 Alloy Structural Steel Rod 4140 Special Steel

Q:Can special steel be used in high-pressure applications?: Indeed, high-pressure applications can utilize special steel. These steels, also referred to as alloy steels, are intentionally designed to possess improved mechanical properties, including high strength, ductility, and resistance to corrosion. These characteristics make them suitable for enduring high-pressure settings. Industries such as oil and gas, aerospace, automotive, and power generation often employ special steels due to their high-pressure applications. In the oil and gas sector, for instance, special steels are utilized in the production of high-pressure pipelines, valves, and pressure vessels that can withstand the intense pressure conditions during processes like oil drilling, transportation, and refining. The exceptional strength of special steel enables it to withstand the internal pressure exerted by fluids or gases without any deformation or failure. Additionally, its corrosion resistance ensures that the steel remains intact and undamaged even in the demanding operating conditions frequently encountered in high-pressure applications. Furthermore, special steels can be customized to meet specific requirements by adjusting their chemical composition and heat treatment processes. This customization allows the steel to exhibit even greater strength, toughness, and fatigue resistance, thereby making it an ideal choice for applications in high-pressure environments. To summarize, special steel can be utilized in high-pressure applications owing to its enhanced mechanical properties and resistance to corrosion. Its ability to endure extreme pressures makes it a dependable option for numerous industries that encounter high-pressure conditions.

Q:What are the properties of electrical steel?: Electrical steel, also known as silicon steel, possesses specific properties that make it ideal for use in electrical equipment. It exhibits low core loss, high permeability, and high magnetic saturation, enabling efficient energy conversion and minimizing power losses. Additionally, electrical steel has a high resistivity, reducing eddy currents and further improving its performance in transformers, motors, and generators.

Q:What are the main applications of special steel in the packaging machinery?: Special steel is widely used in packaging machinery due to its outstanding properties such as high strength, corrosion resistance, and durability. It is primarily utilized in the construction of machine components like blades, dies, and molds, ensuring efficient and precise cutting, shaping, and forming of packaging materials. Additionally, special steel's ability to withstand high temperatures and extreme pressures make it suitable for applications requiring heat sealing or sterilization of packaging. Overall, special steel plays a crucial role in enhancing the performance, reliability, and longevity of packaging machinery.

Q:How does special steel perform in high-stress applications?: Special steel performs exceptionally well in high-stress applications. Its unique composition and properties, such as high strength, toughness, and resistance to wear and corrosion, enable it to withstand extreme conditions and heavy loads without compromising its structural integrity. This makes special steel an ideal choice for demanding industries like aerospace, automotive, and construction, where durability and reliability are crucial.

Q:How is special steel used in the chemical industry?: Special steel is used in the chemical industry primarily for its corrosion resistance, high temperature stability, and durability. It is widely utilized in the construction of chemical processing equipment, such as reactors, tanks, and pipelines, to withstand harsh and corrosive environments. Additionally, special steel alloys are employed in the production of catalysts, which are essential for various chemical reactions. Overall, special steel plays a crucial role in ensuring the safety, efficiency, and longevity of chemical processes within the industry.

Q:How is special steel used in the packaging supply chain?: Special steel is used in the packaging supply chain for various purposes. It is used to manufacture durable and strong packaging equipment such as steel drums, containers, and pallets. These steel products ensure the safe transportation and storage of goods, especially heavy or hazardous materials. Additionally, special steel is used in the production of cutting tools, blades, and molds that are essential for packaging processes. Overall, special steel plays a crucial role in ensuring the efficiency, reliability, and safety of the packaging supply chain.

Q:How does special steel contribute to the efficiency of industrial equipment?: Special steel contributes to the efficiency of industrial equipment by offering superior strength, durability, and resistance to wear and tear. Its unique properties enable the production of lighter and more compact equipment, resulting in reduced energy consumption, increased productivity, and improved overall performance. Additionally, special steel's high corrosion resistance helps to prolong the lifespan of industrial equipment, reducing maintenance costs and enhancing operational efficiency.

Q:What are the specific requirements for special steel used in the chemical reactor industry?: The specific requirements for special steel used in the chemical reactor industry can vary depending on the specific application and the type of chemicals being processed. However, there are some general requirements that are typically expected for this type of steel. Firstly, the steel used in chemical reactors must have excellent corrosion resistance. Chemical reactors often handle highly corrosive substances, such as acids, alkalis, and other reactive chemicals. Therefore, the steel must be resistant to the corrosive effects of these substances to ensure the integrity and durability of the reactor. Secondly, the steel should have high temperature resistance. Chemical reactions often require high temperatures to facilitate the desired chemical transformations. The steel used in these reactors must be able to withstand these elevated temperatures without losing its structural integrity or undergoing any significant deformation. Furthermore, the steel should have good mechanical properties, including high strength and toughness. The reactor may experience high pressure and mechanical stress during operation, so the steel must be able to withstand these conditions without failure. Additionally, the steel used in chemical reactors should have good weldability and formability. This allows for ease of fabrication and construction of the reactor, ensuring a reliable and efficient manufacturing process. Moreover, the steel should have low levels of impurities, such as sulfur and phosphorus. These impurities can adversely affect the performance of the steel in terms of corrosion resistance and mechanical properties. Therefore, the steel must meet strict quality standards to ensure it is suitable for use in the chemical reactor industry. In summary, the specific requirements for special steel used in the chemical reactor industry include excellent corrosion resistance, high temperature resistance, good mechanical properties, weldability, formability, and low levels of impurities. Meeting these requirements is crucial to ensure the safety, reliability, and efficiency of chemical reactors in various industrial processes.

Q:What are the main applications of special steel in the mining transportation?: Special steel is widely used in mining transportation for various applications. One of the main applications is in the manufacturing of mining equipment such as drill bits, cutting tools, and conveyor belts. Special steel's superior strength, hardness, and resistance to wear and corrosion make it ideal for these components, ensuring their durability and longevity in harsh mining environments. Additionally, special steel is also used in the construction of mine shafts, tunnels, and bridges, where its high tensile strength and resistance to extreme temperatures are crucial. Overall, special steel plays a vital role in enhancing the performance, safety, and efficiency of mining transportation systems.

Q:How does special steel contribute to improving product quality?: Special steel contributes to improving product quality in several ways. Firstly, it offers superior strength and durability compared to regular steel, making it ideal for applications that require high performance and reliability. This ensures that products made with special steel will have a longer lifespan and reduced chances of failure, thereby enhancing overall quality. Additionally, special steel can be tailored to have specific properties like corrosion resistance, heat resistance, or magnetic properties, which are crucial in various industries such as automotive, aerospace, and medical. By using special steel, manufacturers can produce products that meet specific performance requirements, resulting in improved quality and customer satisfaction.

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