Special Steel SAE4140 Alloy Steel Bar 42CrMo4

Special Steel SAE4140 Alloy Steel Bar 42CrMo4 System 1

Special Steel SAE4140 Alloy Steel Bar 42CrMo4

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Product Information

1. Grade: 4140 , SAE4140, 42CrMo4, 1.7225

2. Specification: Dia: 16~800mm Length:2000-13000mm or as required

3. Process: EAF+LF+VD

4. Technique:Forged

5.Treatment:hot rolled,cold drawn

6.Mechanical performance:

Strength of extension	1080MPA
Yield point	930MPA
Elongation	12%
Contractibility rate	45%
Impacting energy	63J

7. Chemical composition(for reference only)

Grade	C	Si	Mn	P≤	S≤	Cr	Mo
SAE4140	0.38/0.43	0.15/0.35	0.75/1.00	0.035	0.035	0.80/1.10	0.15/0.25

8. Compared grades of 4140 steel

GB-China	AISI-America	DIN-GERMANY	JIS-Japan
42CrMo	4140	1.7225	SCM440

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Special Steel SAE4140 Alloy Steel Bar 42CrMo4

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Special Steel SAE4140 Alloy Steel Bar 42CrMo4

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q: What are the different methods of surface texturing for special steel?: There are several different methods of surface texturing for special steel, each with its own unique advantages and applications. Some of the most common methods include: 1. Shot blasting: This process involves propelling small metal or ceramic particles at high speeds onto the surface of the steel. It removes any impurities or contaminants on the surface, creating a textured finish that improves adhesion for coatings and paints. 2. Acid etching: This method involves immersing the steel in an acidic solution, which selectively removes a thin layer of the surface to create a textured pattern. Acid etching can be used to achieve intricate designs or patterns on the steel surface. 3. Mechanical grinding: This technique involves using abrasive tools to physically grind and remove material from the surface of the steel. It can be used to create a range of textures, from smooth to rough, depending on the grit size of the grinding tool. 4. Laser texturing: This advanced method uses laser technology to create precise and intricate patterns on the surface of the steel. Laser texturing offers high precision and repeatability and can be used to achieve complex designs that are difficult to achieve with other methods. 5. Electrochemical etching: This process involves using an electric current to selectively dissolve the surface of the steel, creating a textured pattern. It can be used to achieve consistent and controlled textures on the steel surface. Each method of surface texturing has its own advantages and limitations, and the choice of method depends on the desired texture, the specific properties of the special steel, and the intended application.

Q: Can special steel be used for making cutting tools?: Indeed, cutting tools can be crafted from special steel. Specifically engineered and produced, special steel alloys like tool steel possess exceptional attributes such as wear resistance, hardness, toughness, and stability at high temperatures. Consequently, they are exceptionally suited for the production of cutting tools. These tools encompass a wide range of instruments, including saw blades, drills, milling cutters, knives, and other sharp-edged implements utilized across various industries such as manufacturing, construction, metalworking, woodworking, and more. The distinctive properties of special steel enable cutting tools to maintain their sharpness, withstand substantial cutting forces, and operate with utmost effectiveness and efficiency over extended durations.

Q: What are the factors that determine the cost of special steel?: There are several factors that determine the cost of special steel. These include the raw material costs, manufacturing processes and techniques involved, the complexity of the steel composition, the market demand and supply, and any additional treatments or finishes required. Other factors such as transportation costs, import/export taxes, and industry regulations may also influence the overall cost.

Q: How is special steel used in the manufacturing of cutting tools?: Special steel is used in the manufacturing of cutting tools due to its exceptional properties such as high hardness, wear resistance, and toughness. This type of steel allows for the production of durable and efficient cutting tools that can withstand the high forces and temperatures involved in cutting operations. Additionally, special steel can be heat-treated to further enhance its properties, making it ideal for creating sharp and long-lasting cutting edges.

Q: Can special steel be used for musical instruments?: Yes, special steel can be used for musical instruments. In fact, many high-quality instruments such as saxophones, trumpets, and guitars are made using different types of steel. Special steel alloys like stainless steel or nickel silver offer unique tonal qualities and durability, making them suitable for producing musical instruments with excellent sound projection and longevity.

Q: How does aluminum contribute to the properties of special steel?: Aluminum contributes to the properties of special steel by improving its strength, corrosion resistance, and heat resistance. It forms a thin layer of aluminum oxide on the surface, which acts as a protective barrier against rust and other environmental factors. Additionally, aluminum helps in refining the grain structure of the steel, making it stronger and more durable. It also enhances the steel's ability to withstand high temperatures, making it suitable for various applications in industries like aerospace, automotive, and construction.

Q: How is duplex stainless steel used in the oil and gas industry?: Duplex stainless steel is widely used in the oil and gas industry due to its exceptional corrosion resistance, high strength, and good weldability. It is commonly used in various applications including offshore platforms, subsea pipelines, oil and gas refineries, and chemical processing plants. The duplex stainless steel's ability to withstand harsh environments, resist corrosion from corrosive fluids, and perform under high pressure and temperature conditions makes it a preferred material for critical components and equipment in the oil and gas sector.

Q: What are the different surface treatments for special steel?: There are several different surface treatments available for special steel, each serving a specific purpose and offering unique advantages. Some of the most common surface treatments for special steel include: 1. Galvanizing: This process involves coating the steel with a layer of zinc, which provides excellent corrosion resistance. Galvanizing is a popular choice for outdoor applications where the steel is exposed to moisture and harsh environmental conditions. 2. Powder coating: Powder coating involves applying a dry powder to the steel surface, which is then heated and cured to form a durable and protective coating. This treatment offers excellent resistance against corrosion, chemicals, and UV rays, making it ideal for various applications, including automotive parts, appliances, and outdoor furniture. 3. Nitriding: Nitriding is a surface hardening treatment that involves diffusing nitrogen into the steel surface. This process significantly increases the surface hardness, wear resistance, and fatigue strength of the steel. Nitriding is commonly used for high-performance components, such as gears, crankshafts, and injection molding screws. 4. Electroplating: Electroplating involves depositing a layer of metal, such as chromium, nickel, or gold, onto the steel surface through an electrochemical process. This treatment enhances the steel's appearance, provides corrosion resistance, and improves wear resistance. Electroplating is often used for decorative purposes or to enhance the performance of components in various industries. 5. Passivation: Passivation is a chemical treatment that removes iron contaminants from the steel surface, creating a passive oxide layer. This layer acts as a barrier against corrosion, improving the steel's resistance to rust and other forms of degradation. Passivation is commonly used for stainless steel components in industries such as food processing, pharmaceuticals, and medical devices. 6. Carbonitriding: Carbonitriding is a surface treatment that involves introducing carbon and nitrogen into the steel surface at high temperatures. This process forms a hardened case, improving wear resistance and fatigue strength. Carbonitriding is often used for high-stress components, such as gears, crankshafts, and camshafts. These are just a few examples of the different surface treatments available for special steel. The choice of treatment depends on various factors, including the desired properties, application requirements, and budget constraints. It is essential to consult with experts or manufacturers to determine the most suitable surface treatment for specific steel applications.

Q: What are the main advantages of using special steel in the automotive racing industry?: The main advantages of using special steel in the automotive racing industry are its high strength-to-weight ratio, exceptional durability, and excellent thermal conductivity. Special steel allows for the construction of lighter and stronger components, enhancing the overall performance and speed of racing vehicles. It also ensures greater safety for drivers by providing increased resistance to impact and fatigue. Furthermore, the superior thermal conductivity of special steel aids in dissipating heat generated during intense racing conditions, preventing overheating and maintaining optimal engine performance.

Q: How does special steel contribute to the aerospace noise reduction?: Special steel contributes to aerospace noise reduction in several ways. Firstly, special steel alloys can be used to manufacture components such as aircraft engine parts and exhaust systems that are specifically designed to minimize noise generation. These alloys possess properties like high strength and heat resistance, enabling them to withstand the extreme conditions inside an aircraft engine while reducing noise emissions. Additionally, special steel can be utilized in the construction of aircraft structures and panels. By incorporating specific types of steel with sound-dampening properties, the transmission of noise through the fuselage can be minimized. This helps to reduce the noise experienced by passengers and crew, leading to a quieter and more comfortable flight experience. Furthermore, special steel can be employed in the manufacturing of vibration-damping components within aircraft systems. Vibrations generated by various mechanical systems can contribute to overall noise levels. By utilizing steel alloys with excellent damping properties, these vibrations can be absorbed and minimized, thereby reducing noise levels. In summary, special steel plays a crucial role in aerospace noise reduction by enabling the manufacturing of noise-reducing components, providing sound-dampening properties to aircraft structures, and minimizing vibrations that contribute to overall noise levels.

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