Special Steel SAE4140 Alloy Steel Round Bar

Special Steel SAE4140 Alloy Steel Round Bar System 1

Special Steel SAE4140 Alloy Steel Round Bar

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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,SCM440

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 42CrMo4	SCM440

GB-China

AISI-America

DIN-GERMANY

JIS-Japan

42CrMo

4140

1.7225

42CrMo4

SCM440

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Special Steel SAE4140 Alloy Steel Round Bar

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 requirements for special steel used in renewable energy equipment manufacturing?: The requirements for special steel used in renewable energy equipment manufacturing include high strength and durability, corrosion resistance, and the ability to withstand extreme temperatures and environmental conditions. Additionally, the steel should possess good weldability and formability to facilitate the manufacturing process. It is also important for the steel to have low carbon content to reduce its environmental impact and improve sustainability.

Q: What is the impact of grain size on the mechanical properties of special steel?: The impact of grain size on the mechanical properties of special steel is significant. Generally, a finer grain size enhances the strength, hardness, and toughness of the steel, while a coarser grain size can result in reduced mechanical properties. This is because a finer grain size provides more grain boundaries, which act as barriers to dislocation movement and contribute to strengthening the material. Additionally, finer grains promote better uniformity in the distribution of stress and strain, leading to improved mechanical performance. Therefore, controlling and optimizing the grain size is crucial in achieving the desired mechanical properties of special steel.

Q: What are the different applications of tool special steel?: Tool special steel is a versatile material that finds applications in various industries due to its unique properties. Some of the different applications of tool special steel include: 1. Cutting Tools: Tool special steel is widely used in the manufacturing of cutting tools such as drills, saw blades, milling cutters, and lathe tools. Its high hardness, wear resistance, and toughness make it ideal for these applications, ensuring long tool life and excellent cutting performance. 2. Dies and Molds: Tool special steel is also extensively used in the production of dies and molds for metalworking and plastic injection molding processes. Its ability to withstand high temperatures, resist wear and deformation, and maintain dimensional stability make it suitable for these demanding applications. 3. Automotive Industry: Tool special steel is employed in the automotive industry for various components such as crankshafts, gears, camshafts, and engine valves. Its excellent strength, fatigue resistance, and heat resistance qualities contribute to the overall durability and performance of automotive parts. 4. Aerospace Industry: Tool special steel is utilized in the aerospace industry for applications such as turbine blades, aircraft engine components, landing gears, and structural parts. Its high strength, corrosion resistance, and ability to withstand extreme temperatures and pressure make it an ideal choice for these critical applications. 5. Construction and Mining: Tool special steel is used in the construction and mining sectors for equipment such as excavator buckets, rock drills, bulldozer blades, and drilling bits. Its high hardness, toughness, and resistance to abrasion enable these tools to withstand the harsh conditions encountered in these industries. 6. Tooling Industry: As the name suggests, tool special steel is extensively used in the tooling industry for the manufacture of various types of tools and equipment. Whether it is hand tools, power tools, or precision instruments, tool special steel is employed due to its exceptional strength, hardness, and resistance to wear and deformation. 7. Medical Industry: Tool special steel is also utilized in the medical field for the production of surgical instruments, orthopedic implants, and dental tools. Its biocompatibility, corrosion resistance, and ability to be sterilized make it suitable for these critical applications. These are just a few examples of the numerous applications of tool special steel. Its unique properties make it a valuable material in various industries where durability, strength, and precision are essential requirements.

Q: How does special steel contribute to the toughness of products?: Special steel contributes to the toughness of products in several ways. Firstly, special steel is known for its high strength and durability. It is manufactured using specific alloying elements and heat treatment processes, which enhance its mechanical properties and make it more resistant to wear and tear. This increased strength allows products made from special steel to withstand heavy loads, impacts, and harsh environments, making them tougher and less prone to breakage. Additionally, special steel has excellent corrosion resistance properties. This is achieved through the addition of specific alloying elements such as chromium and nickel, which form a protective layer on the surface of the steel, preventing rust and corrosion. The resistance to corrosion adds to the toughness of the products, as they can be used in corrosive environments without degradation or loss of performance. Special steel also offers improved heat resistance. It can withstand high temperatures without losing its structural integrity or mechanical properties. This is particularly important in industries such as aerospace, automotive, and energy, where components are exposed to extreme temperatures. The ability of special steel to maintain its toughness under high heat conditions adds to the overall reliability and longevity of the products. Furthermore, special steel can be customized to meet specific requirements. Manufacturers can tailor the composition and properties of the steel to suit the intended application. For example, different types of special steel alloys are used in the production of cutting tools, bearings, and structural components. By selecting the appropriate grade of special steel, manufacturers can optimize the toughness of their products, ensuring they can withstand the intended use and perform reliably. In conclusion, special steel contributes to the toughness of products through its high strength, corrosion resistance, heat resistance, and customizability. The unique properties of special steel make it an ideal material choice for a wide range of applications, where toughness and durability are crucial factors.

Q: What are the safety measures taken during the production of special steel?: During the production of special steel, several safety measures are taken to ensure the wellbeing of workers and to minimize potential hazards. These safety measures include: 1. Personal Protective Equipment (PPE): All workers involved in the production of special steel are required to wear appropriate PPE, such as safety helmets, goggles, gloves, and protective clothing. This helps protect them from potential injuries, burns, or exposure to hazardous materials. 2. Training and Education: Workers undergo thorough training and education on safe working practices and procedures. They learn about the potential hazards associated with the production of special steel and are trained on how to handle equipment and materials safely. 3. Risk Assessments: Regular risk assessments are conducted to identify potential hazards and assess the level of risk associated with each task. This allows for the implementation of control measures to mitigate risks and prevent accidents. 4. Machinery and Equipment Safety: All machinery and equipment used in the production process are properly maintained and regularly inspected to ensure they are in good working condition. Safety features, such as emergency stop buttons and guards, are in place to prevent accidents and injuries. 5. Ventilation and Exhaust Systems: Special steel production often involves high temperatures and the use of chemicals that may release harmful fumes or gases. Proper ventilation and exhaust systems are installed to remove these pollutants from the work environment, ensuring a safe and healthy atmosphere for workers. 6. Fire Prevention: Fire prevention measures, such as the installation of fire alarms, extinguishers, and sprinkler systems, are implemented to minimize the risk of fire accidents. Workers are also trained on fire safety protocols and evacuation procedures. 7. Emergency Response Plans: Comprehensive emergency response plans are developed and communicated to all workers. These plans outline procedures to be followed in case of accidents, fires, or other emergencies, ensuring a prompt and organized response. 8. Regular Safety Inspections: Regular inspections are conducted by safety professionals to identify any potential safety hazards or non-compliance with safety protocols. Any issues or deficiencies are promptly addressed to maintain a safe working environment. By implementing these safety measures, the production of special steel can be carried out in a controlled and safe manner, protecting the workers and minimizing the risk of accidents or injuries.

Q: What are the different heat treatment processes used in special steel production?: Some of the different heat treatment processes used in special steel production include annealing, quenching, tempering, and normalizing. Annealing is a process of heating and slowly cooling the steel to relieve internal stresses and enhance its ductility. Quenching involves rapidly cooling the steel to increase its hardness and strength. Tempering is done after quenching to reduce brittleness and improve toughness. Normalizing is a heat treatment process that involves heating the steel to a specific temperature and then cooling it in still air to achieve a uniform structure. These processes are essential for achieving the desired mechanical properties and performance of special steel.

Q: What are the different renewable energy grades of special steel?: There are several grades of special steel that are commonly used in the renewable energy industry. These grades are specifically designed to withstand the harsh conditions and requirements of renewable energy applications. One of the most common grades of special steel used in renewable energy is stainless steel. Stainless steel is known for its corrosion resistance properties, which make it ideal for offshore wind turbines or solar panel frames that are exposed to moisture and saltwater. It is also used in geothermal power plants, where high temperatures and corrosive environments are present. Another grade of special steel used in renewable energy is high-strength low-alloy (HSLA) steel. HSLA steel has a higher strength-to-weight ratio, making it suitable for applications that require lightweight structures with high strength, such as wind turbine towers or support structures for solar panels. Furthermore, there is advanced high-strength steel (AHSS) that is commonly used in the automotive industry but can also be utilized in renewable energy applications. AHSS offers excellent strength, durability, and impact resistance, making it suitable for components like blades or gears in wind turbines. Additionally, there is a grade of steel called weathering steel, which is often used in renewable energy applications that are exposed to outdoor elements. Weathering steel forms a protective layer of rust, which prevents further corrosion and eliminates the need for additional coatings. It is commonly used in solar panel support structures, transmission towers, or other outdoor equipment. Overall, the selection of the appropriate grade of special steel for a specific renewable energy application depends on factors such as the type of renewable energy source, the environment in which it will be installed, and the specific requirements of the project.

Q: Can special steel be used in the plastic manufacturing industry?: Yes, special steel can be used in the plastic manufacturing industry. Special steel is often used for making molds and dies, which are critical components in the plastic manufacturing process. These molds and dies need to be strong, durable, and able to withstand high temperatures and pressures. Special steel, such as tool steel or stainless steel, can provide the necessary properties to ensure the quality and longevity of plastic manufacturing equipment.

Q: What are the specific requirements for special steel used in the nuclear industry?: Special steel used in the nuclear industry must meet specific requirements to ensure safety, durability, and reliability. These requirements include: 1. Radiation Resistance: Special steel used in the nuclear industry must possess high radiation resistance to withstand the intense radiation levels present in nuclear reactors. This means that the steel should have low neutron absorption and minimal degradation under irradiation. 2. High Strength and Toughness: Nuclear reactors operate under extreme conditions, including high temperatures and pressure. Special steel used in the nuclear industry must have excellent strength and toughness to withstand these conditions and prevent structural failure. 3. Corrosion Resistance: The steel used in nuclear applications must be highly resistant to corrosion, as exposure to corrosive environments can compromise the integrity of the reactor components. This involves the steel having low susceptibility to stress corrosion cracking, intergranular corrosion, and pitting corrosion. 4. Low Impurity Content: Special steel used in the nuclear industry must have a low impurity content to minimize the potential for radioactive contamination. Any impurities present in the steel can become activated and release radioactive particles, posing a significant safety hazard. 5. Thermal Stability: The steel must have excellent thermal stability to maintain its mechanical properties even under high-temperature conditions. This ensures that the steel remains reliable and performs as expected during prolonged exposure to elevated temperatures. 6. Non-Magnetic Properties: Some components in nuclear reactors require non-magnetic materials to prevent interference with sensitive instruments and equipment. Special steel used in these applications must possess non-magnetic properties to meet this requirement. 7. Regulatory Compliance: Special steel used in the nuclear industry must meet specific regulatory standards and certifications to ensure its suitability for use in nuclear facilities. These standards may vary depending on the country or region, but they typically encompass rigorous quality control, testing, and inspection procedures. Meeting these specific requirements for special steel used in the nuclear industry is crucial for maintaining the safety and integrity of nuclear reactors. Compliance with these standards ensures that the steel can withstand the harsh conditions and the potential hazards associated with nuclear power generation.

Q: How does special steel contribute to the aerospace turbine industry?: Special steel plays a crucial role in the aerospace turbine industry as it offers exceptional strength, corrosion resistance, and high-temperature stability required for the demanding operating conditions of turbine components. It enables the production of turbine blades, discs, and other critical parts that can withstand extreme temperatures and stresses, ensuring optimal performance and safety in aircraft engines. Additionally, special steel's excellent fatigue resistance and ability to retain mechanical properties at elevated temperatures contribute to enhanced fuel efficiency and durability, ultimately advancing the overall efficiency and reliability of aerospace turbines.

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