Special Steel Alloy Steel Round Bar 41Cr4

Special Steel Alloy Steel Round Bar 41Cr4 System 1

Special Steel Alloy Steel Round Bar 41Cr4

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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 Comparison:

GB	AISI	JIS	DIN
40Cr	AISI/SAE5140	SCr440	41Cr4

2 Chemical Composition:

C	Si	Mn	P	S	Cr	Ni	Cu
0.38-0.43	0.15-0.35	0.60-0.90	≤0.03	≤0.03	0.3-0.16	≤0.25	≤0.03

3 Brief Introduction:

Dimension	13-350mm
Length	2-13m or as per your request
Delivery condition	Hot rolled
Heat Treatment	Normalizing, Annealing, Quenching
Packing	Standard seaworthy packing or according to your requirements

4 Mechanical Property:

Yield Strength (MPa)	≥785
Tensile Strength (MPa)	≥980
Elongation (%)	≥9
Hardness (HB)	≤207
Reduction in Area (%)	≥45
AKV (J)	≥47

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Special Steel Alloy Steel Round Bar 41Cr4

Workshop Show

Special Steel Alloy Steel Round Bar 41Cr4

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:How does special steel perform in terms of chemical resistance?: Special steel typically performs very well in terms of chemical resistance. Its composition and properties make it highly resistant to corrosion and oxidation, allowing it to withstand exposure to various chemicals without significant degradation. Additionally, special steel can be specially alloyed or treated to enhance its chemical resistance even further, making it an excellent choice for applications in industries such as oil and gas, chemical processing, and marine environments.

Q:What are the different methods of preventing stress corrosion cracking in special steel?: To prevent stress corrosion cracking in special steel, various approaches can be implemented: 1. Optimal steel alloy selection is pivotal, as it enhances resistance to stress corrosion cracking. Alloys like stainless steel, duplex stainless steel, and nickel-based alloys are renowned for their effectiveness against this type of corrosion. 2. Implementing surface treatments such as passivation or electroplating forms a protective layer on the steel surface. This serves to prevent the penetration of corrosive substances and diminishes the likelihood of stress corrosion cracking. 3. Employing stress relieving through heat treatment methods aids in reducing residual stresses within the steel, which can contribute to stress corrosion cracking. This procedure involves heating the steel to a specific temperature and gradually cooling it, effectively minimizing residual stresses. 4. The use of corrosion inhibitors aids in safeguarding the steel from corrosive environments. These inhibitors can be introduced into the system or applied as a coating on the steel surface, creating a barrier that prevents corrosive substances from reaching the steel. 5. Environmental control plays a crucial role in stress corrosion cracking prevention. Monitoring and regulating factors such as temperature, humidity, and the presence of corrosive substances are essential in minimizing the risk. 6. Incorporating cathodic protection techniques can effectively prevent stress corrosion cracking. This involves applying sacrificial or impressed current to the steel, acting as a cathode and shielding the steel from corrosion. 7. Proper design considerations are paramount in preventing stress corrosion cracking. Factors such as avoiding sharp edges, minimizing stress concentrations, and ensuring adequate drainage to prevent the accumulation of corrosive substances significantly reduce the risk. By employing a combination of these methods, stress corrosion cracking in special steel can be effectively prevented, ensuring the longevity and integrity of the structure.

Q:What are the different aerospace grades of special steel?: Some of the different aerospace grades of special steel include 15-5PH, 17-4PH, 300M, 4130, 4340, 440C, and H11. These grades are specifically designed to meet the high-performance requirements of the aerospace industry, providing excellent strength, corrosion resistance, and heat resistance properties.

Q:How are tungsten alloys used in the defense industry?: Tungsten alloys are commonly used in the defense industry due to their exceptional properties such as high density, strength, and resistance to heat and corrosion. These alloys are used in various applications including armor piercing ammunition, kinetic energy penetrators, and armor plating for military vehicles and aircraft. Their ability to withstand extreme conditions and penetrate hardened targets make tungsten alloys vital for enhancing the effectiveness and protection capabilities of defense systems.

Q:What industries commonly use special steel?: Special steel, known as alloy steel as well, finds extensive use in diverse industries owing to its exceptional properties and performance characteristics. Several industries frequently employ special steel, including: 1. Automotive Industry: Special steel is extensively utilized in manufacturing automobile components such as crankshafts, camshafts, gears, and axles. Its exceptional strength, durability, and excellent heat resistance make it suitable for enduring the demanding conditions of the automotive sector. 2. Aerospace Industry: The aerospace industry relies on special steel to manufacture critical components like turbine blades, landing gear, and structural parts. Its ability to withstand high temperatures and maintain structural integrity under extreme conditions is vital for aerospace applications. 3. Oil and Gas Industry: In the oil and gas sector, special steel is crucial for applications like drill bits, valves, pipelines, and offshore platform components. Its corrosion resistance, high strength, and ability to withstand extreme temperatures and pressures make it suitable for these challenging environments. 4. Construction Industry: Special steel serves the construction industry in fabricating structural components, reinforcement bars, and high-rise building frameworks. Its high tensile strength, toughness, and resistance to wear and tear ensure the safety and stability of the structures. 5. Tool and Die Industry: The tool and die sector widely employs special steel in manufacturing cutting tools, molds, dies, and various machine components. Its capability to retain sharpness, resist deformation, and withstand high pressures and temperatures make it indispensable for these applications. 6. Energy Industry: Power generation plants, including nuclear, thermal, and renewable energy facilities, extensively utilize special steel. It is employed in manufacturing turbines, boilers, heat exchangers, and other critical components, thanks to its high temperature and corrosion resistance properties. 7. Medical Industry: In the medical field, special steel plays a crucial role, particularly in surgical instruments and implants. Its biocompatibility, strength, and corrosion resistance make it suitable for applications like joint replacements, dental instruments, and surgical cutting tools. 8. Manufacturing Industry: Various manufacturing processes like machining, forging, and casting widely rely on special steel. It is employed in the production of machine tools, industrial equipment, and heavy machinery components due to its high strength, toughness, and versatility. These examples represent just a fraction of the industries that commonly employ special steel. Its unique properties make it an indispensable material for a wide range of applications where strength, durability, heat resistance, and corrosion resistance are critical factors.

Q:What are the different tool steel alloys?: Tool steel, a type of steel containing carbon and alloy, is specifically designed for producing tools, dies, and cutting applications. There are various tool steel alloys available, each possessing unique properties and characteristics. 1. Carbon Tool Steels: These steels have a higher carbon content, typically ranging from 0.60% to 1.00%. They provide excellent hardness, wear resistance, and toughness, rendering them suitable for cutting and forming tools. 2. High-Speed Tool Steels: These steels are engineered to endure high temperatures while maintaining their hardness and strength at elevated speeds. They usually contain alloying elements like tungsten, molybdenum, and vanadium. 3. Shock-Resistant Tool Steels: These steels are specially formulated to withstand high impact or shock loads without fracturing. They offer exceptional toughness and are frequently utilized for chisels, hammers, and other tools subjected to intense impact forces. 4. Hot-Work Tool Steels: These steels are designed to retain their hardness and strength at high temperatures, making them ideal for applications involving hot forming or forging processes. They exhibit outstanding thermal conductivity and wear resistance. 5. Cold-Work Tool Steels: These steels are specifically designed for applications involving cutting, shearing, and forming at room temperature or lower. They possess high hardness, wear resistance, and toughness, enabling them to withstand the stresses associated with cold-working operations. 6. Mold Steels: Mold steels are primarily used in the production of molds for plastic injection molding, die casting, and extrusion processes. They offer good machinability, high wear resistance, and excellent dimensional stability. 7. Stainless Tool Steels: Stainless tool steels combine the corrosion resistance of stainless steel with the hardness and toughness of tool steel. They are commonly used in applications where both wear resistance and corrosion resistance are required. These examples represent just a fraction of the tool steel alloys available in the market. Each alloy possesses distinct properties and applications, enabling manufacturers to select the most suitable tool steel for their specific requirements.

Q:What are the different methods of surface coating for special steel?: There are several different methods of surface coating that can be used for special steel, depending on the desired outcome and application. Some of the most common methods include: 1. Electroplating: This method involves using an electric current to deposit a thin layer of metal onto the surface of the steel. This can improve the steel's corrosion resistance, wear resistance, and aesthetic appearance. 2. Hot-dip galvanizing: In this method, the steel is immersed in a bath of molten zinc, which forms a protective coating on the surface. Hot-dip galvanizing provides excellent corrosion protection and can be used for both interior and exterior applications. 3. Powder coating: Powder coating involves applying a dry powder to the steel surface, which is then heated and cured to form a durable and attractive coating. Powder coating can provide excellent corrosion resistance, impact resistance, and color customization options. 4. Physical vapor deposition (PVD): PVD is a vacuum coating process that involves depositing thin layers of metal onto the steel surface. This method can improve the steel's hardness, wear resistance, and chemical resistance. It is commonly used for decorative finishes and to enhance the performance of cutting tools. 5. Chemical conversion coating: This method involves treating the steel surface with a chemical solution, which reacts with the surface to form a protective coating. Chemical conversion coatings can provide corrosion resistance and can also be used as a base for painting or other coatings. 6. Thermal spraying: Thermal spraying involves melting or heating a coating material and projecting it onto the steel surface using a spray gun. This method can be used to apply a wide range of coatings, including metals, ceramics, and polymers. Thermal spraying can improve the steel's wear resistance, corrosion resistance, and thermal insulation properties. These are just a few examples of the different methods of surface coating for special steel. The choice of method will depend on factors such as the desired properties, application requirements, and budget. It is important to consult with experts in the field to determine the most suitable coating method for specific steel applications.

Q:What are the different international trade regulations for special steel?: Special steel, which is produced for specific applications or industries, falls under the purview of various international trade regulations. These regulations have the objectives of ensuring fair trade practices, protecting domestic industries, and promoting safety standards. The World Trade Organization (WTO) agreements are one of the primary international trade regulations for special steel. The WTO, through agreements like the General Agreement on Tariffs and Trade (GATT) and the Agreement on Safeguards, establishes rules for global trade. These agreements address issues such as tariffs, non-tariff barriers, and safeguard measures that may be imposed on imports of special steel. Another significant regulation is the Harmonized System (HS) codes. These codes provide a standardized system of names and numbers to classify traded products. Special steel is assigned specific HS codes, which enable customs authorities to determine the relevant duties and regulations applicable to these products during import or export. Regional trade agreements (RTAs) also play a role in regulating international trade of special steel. RTAs are agreements between countries or regions that aim to reduce trade barriers and promote economic integration. Examples of such agreements include NAFTA, the EU, and the CPTPP. They often include provisions related to tariffs, technical standards, and trade facilitation for special steel. Furthermore, certain countries may have specific regulations concerning the import or export of special steel. These regulations may encompass licensing requirements, quality standards, safety certifications, or restrictions on certain types of steel. Businesses involved in the trade of special steel must be aware of these country-specific regulations to ensure compliance. In conclusion, the regulations governing international trade of special steel encompass a variety of agreements, codes, and country-specific rules. Adhering to these regulations is crucial for companies engaged in global trade to ensure compliance, avoid penalties, and uphold fair trade practices.

Q:How does special steel contribute to sustainability?: There are several ways in which special steel contributes to sustainability. To begin with, special steel possesses a high level of durability and has an extended lifespan. As a result, products created from special steel, such as buildings, bridges, and machinery, enjoy a longer period of service compared to other materials. This reduces the necessity for frequent replacements and repairs, thereby diminishing the consumption of resources and energy needed for manufacturing. In addition, special steel is easily recyclable. When it reaches the end of its life cycle, it can be effortlessly collected and transformed into new steel products without any loss in quality. This diminishes the demand for fresh raw materials and minimizes the environmental impact brought about by mining and extraction processes. Moreover, special steel is renowned for its strength and lightweight characteristics. This enables the design and construction of lighter and more energy-efficient structures and vehicles. For instance, by incorporating special steel into automobiles, the weight of the vehicle can be reduced, leading to lower fuel consumption and greenhouse gas emissions. Furthermore, the production of special steel has become more sustainable over time. Steel manufacturers are embracing advanced technologies and processes to decrease energy consumption, emissions, and waste generation. This encompasses the use of energy-efficient furnaces, the recycling of waste heat, and the implementation of water management strategies. All in all, the utilization of special steel contributes to a more sustainable future by promoting durability, recyclability, energy efficiency, and reduced environmental impact.

Q:What are the different types of corrosion that special steel can encounter?: Special steel can encounter several different types of corrosion, including: 1. Uniform corrosion: This is the most common type of corrosion, where the entire surface of the steel corrodes evenly. It usually occurs when the steel is exposed to an aggressive environment, such as a corrosive chemical or high humidity. 2. Pitting corrosion: Pitting corrosion is characterized by localized corrosion attack in the form of small pits or cavities on the steel surface. It can occur due to the presence of chloride ions or other aggressive substances, and it can be particularly detrimental as it can lead to the formation of cracks. 3. Crevice corrosion: Crevice corrosion occurs in narrow gaps or crevices between steel surfaces, such as junctions, gaskets, or under deposits. It is caused by the restricted access of oxygen and the accumulation of corrosive agents, leading to localized corrosion and potential damage. 4. Galvanic corrosion: Galvanic corrosion occurs when two dissimilar metals are in contact with each other in the presence of an electrolyte. In special steel, this can happen when it is in contact with another metal in a corrosive environment, resulting in accelerated corrosion of the less noble metal. 5. Stress corrosion cracking: This type of corrosion occurs due to the combined action of tensile stress and a corrosive environment. It can cause the steel to crack and fail, even under relatively low stress levels. Special steel is often susceptible to stress corrosion cracking in specific environments, such as high chloride or acidic solutions. 6. Intergranular corrosion: Intergranular corrosion occurs along the grain boundaries of steel, usually due to the segregation of impurities during the steel's manufacturing process. It can weaken the material and lead to premature failure. To prevent or mitigate these types of corrosion, special steel can be treated with various corrosion-resistant coatings, such as paints, metallic coatings, or alloys with high resistance to corrosion. Additionally, proper material selection, design considerations, and regular maintenance can also help minimize the risk of corrosion in special steel applications.

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