4140 Alloy Steel, 1.7225 Steel Material, SCM440 Steel 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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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
4140 Alloy Steel, 1.7225 Steel Material, SCM440 Steel Bar
Product information:
1. Dia:12mm-300mm
2. Standard Performed: ASTM A29/A29M-04
Equal Standard:
America Standard: AISI4140
International Standard: 42CrMo4
Japan Standard: SCM440
Germany Standard: 42CrMo4
4.Grade:ASTM A29 4140 42CrMo SCM440
Hardness:217HB
Tensile strength:1080(110)MPA
Yield strength: 930(95)MPA
elogation:12% Reduction of area:45% AKV(impact value):63J
Product show：
Workshop show：
Our service:
-High manufacturing accuracy
-High strength
-Small inertia resistance
-Strong heat dissipation ability
-Good visual effect
-Reasonable price
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer's trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.
If you need the sample, please feel free to let me know. Any question, we will contact you ASAP!
- Q: What are the applications of special steel in the defense sector?
- Special steel, also known as high-strength or high-performance steel, finds numerous applications in the defense sector due to its unique properties and capabilities. The applications of special steel in the defense sector can be classified into various categories: 1. Armor and ballistic protection: Special steel is extensively used in the manufacturing of armored vehicles, tanks, and personnel carriers. Its high strength and hardness make it an ideal material for providing protection against ballistic threats, including bullets, fragments, and explosives. Special steel plates are used to reinforce the structure and provide resistance to penetration. 2. Ammunition and weapon components: Special steel is utilized in the production of various weapon components, including barrels, bolts, and receivers. Its exceptional strength, durability, and resistance to wear and corrosion make it suitable for manufacturing firearms and ammunition. Special steel alloys can withstand high temperatures and pressure generated during firing, ensuring reliable performance and longevity of weapons. 3. Aircraft and aerospace components: Special steel is used in the construction of aircraft and aerospace components, such as landing gears, engine components, and structural parts. Its high strength-to-weight ratio allows for the production of lightweight yet robust components, enhancing the overall performance and safety of military aircraft. Special steel alloys also exhibit excellent resistance to fatigue and high-temperature environments, making them suitable for demanding aerospace applications. 4. Naval applications: Special steel plays a crucial role in the defense sector's naval applications, including the construction of warships, submarines, and naval vessels. Its corrosion resistance, high strength, and toughness make it an ideal material for shipbuilding, ensuring the longevity and structural integrity of naval platforms. Special steel is also used in propeller shafts, hulls, and other critical components that require exceptional strength and resistance to harsh marine environments. 5. Missiles and rocketry: Special steel is utilized in the construction of missiles, rockets, and their propulsion systems. Its high-temperature resistance, strength, and ability to withstand extreme forces make it suitable for manufacturing critical components, such as rocket nozzles and motor casings. Special steel alloys can withstand the intense heat and pressure generated during rocket propulsion, ensuring reliable and efficient performance. Overall, the applications of special steel in the defense sector are vast and diverse. Its unique properties and capabilities contribute significantly to the development of robust, reliable, and high-performance defense systems, ensuring the safety and security of military personnel and assets.
- Q: What are the different surface finishing techniques for special steel parts?
- Special steel parts can undergo various surface finishing techniques to enhance their appearance, protect against corrosion, and improve overall performance. Some commonly utilized methods include: 1. Achieving a smooth and glossy surface on the steel part through polishing, using abrasives. This technique not only enhances aesthetics but also enhances resistance against corrosion. 2. Plating involves depositing a layer of metal onto the steel part's surface, with options such as chrome, nickel, and zinc. This technique provides additional protection against corrosion, improves wear resistance, and can offer desired color or finish. 3. Powder coating entails electrostatically applying a dry powder to the steel part's surface, followed by heat curing. The melted powder forms a durable and visually appealing coating that provides excellent resistance against corrosion, impact, and chemicals. 4. Anodizing, primarily used for aluminum but applicable to certain special steel parts, creates a controlled oxide layer on the surface. This enhances corrosion resistance, improves appearance, and can even provide insulation. 5. Employing a chemical process known as passivation removes free iron and contaminants from the steel part's surface. This process helps prevent corrosion and enhances resistance against staining or discoloration. 6. Heat treatment involves altering the physical and mechanical properties of the steel part by subjecting it to heating and cooling. This process improves hardness, strength, toughness, and provides desired surface finishes. 7. Through electropolishing, an electrochemical process, a thin layer of metal is removed from the steel part's surface. This technique eliminates surface imperfections, smoothens the part, and enhances corrosion resistance. Choosing the appropriate surface finishing technique is crucial, taking into consideration the specific requirements of the special steel part, including its function, desired appearance, and the environmental conditions it will encounter.
- Q: What are the safety measures taken during the production of special steel?
- To ensure the safety and wellbeing of workers and reduce potential hazards, various safety measures are taken during the production of special steel. These measures encompass the following: 1. Personal Protective Equipment (PPE): All workers involved in special steel production must wear appropriate PPE, including safety helmets, goggles, gloves, and protective clothing. This safeguards them from injuries, burns, and exposure to hazardous substances. 2. Training and Education: Workers undergo comprehensive training and education on safe work practices and procedures. They gain knowledge about the potential hazards associated with special steel production and receive training on the proper handling of equipment and materials. 3. Risk Assessments: Regular risk assessments are conducted to identify potential hazards and evaluate the level of risk associated with each task. This facilitates 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 meticulously maintained and regularly inspected to ensure optimal working conditions. Safety features, such as emergency stop buttons and guards, are installed to prevent accidents and injuries. 5. Ventilation and Exhaust Systems: Given the high temperatures and use of chemicals in special steel production, ventilation and exhaust systems are installed to eliminate harmful fumes and gases from the work environment. This ensures a safe and healthy atmosphere for workers. 6. Fire Prevention: To minimize the risk of fire accidents, fire prevention measures are implemented, including the installation of fire alarms, extinguishers, and sprinkler systems. 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 the steps to be taken in the event of accidents, fires, or other emergencies, ensuring a swift and organized response. 8. Regular Safety Inspections: Safety professionals conduct regular inspections 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, special steel production can be carried out in a controlled and safe manner, safeguarding workers and minimizing the risk of accidents or injuries.
- Q: What are the main applications of special steel in the food processing machinery?
- Special steel is commonly used in various applications in food processing machinery due to its unique properties. One of the main applications is in the production of cutting blades and knives, where special steel's high hardness and excellent wear resistance ensure efficient and precise cutting of food products. Additionally, special steel is utilized in the manufacture of components like shafts, gears, and bearings, thanks to its exceptional strength, corrosion resistance, and ability to withstand extreme temperatures. These properties make special steel ideal for ensuring the durability, hygiene, and safety of food processing machinery, ultimately contributing to the efficient production of high-quality food products.
- Q: How is special steel used in the chemical industry?
- Special steel is widely used in the chemical industry due to its excellent corrosion resistance properties. It is used to manufacture various equipment and components like storage tanks, pipes, valves, and reactors that come in contact with corrosive chemicals. Additionally, special steel's high strength and temperature resistance make it suitable for applications requiring robust and durable materials in chemical processing plants.
- Q: How does special steel contribute to the defense machinery industry?
- Special steel contributes to the defense machinery industry by providing superior strength, durability, and resistance to corrosion. This type of steel is specifically designed to meet the demanding requirements of military applications, ensuring that defense machinery can withstand harsh environments, extreme temperatures, and heavy use. By utilizing special steel, the defense industry can produce high-performance weapons, vehicles, and equipment that are essential for national security and defense capabilities.
- Q: How does hot rolling affect the microstructure of special steel?
- Hot rolling affects the microstructure of special steel by causing recrystallization and grain growth. The high temperature during the rolling process allows the steel to undergo plastic deformation, leading to the formation of new grains with a finer size. This results in improved mechanical properties such as increased hardness and strength. Additionally, hot rolling can also help in eliminating any residual stresses and improving the overall homogeneity of the steel's microstructure.
- Q: What are the common challenges in heat treatment of special steel?
- The heat treatment of special steel presents several common challenges that need to be carefully addressed in order to achieve desired material properties. One of the key challenges is the need for precise temperature control during the heating and cooling processes. Special steels often have specific heat treatment temperature ranges that need to be strictly followed to achieve the desired microstructure and mechanical properties. Failure to maintain precise temperature control can result in inadequate or inconsistent heat treatment, leading to suboptimal material performance. Another challenge is the potential for distortion or warping of the steel components during the heat treatment process. Special steels often have complex shapes or intricate designs, making them more susceptible to distortion when exposed to high temperatures. This distortion can negatively impact the dimensional accuracy and overall quality of the final product. Hence, careful consideration must be given to the selection of appropriate heating and cooling methods, as well as the use of fixtures or jigs to minimize distortion. Furthermore, special steels may contain alloying elements that can have a significant influence on the heat treatment process. Alloying elements such as chromium, molybdenum, or vanadium can alter the hardenability, tempering response, or transformation behavior of the steel. These elements may introduce additional challenges when determining the optimal heat treatment parameters, as their presence can necessitate adjustments to the heating and cooling rates, soak times, or quenching media. Lastly, achieving uniformity in heat treatment across a batch of special steel components can be a challenge. Variations in size, shape, or composition within a batch can lead to inconsistent heat treatment results. Controlling the heating and cooling rates, ensuring proper circulation of the heat treatment media, and implementing effective process monitoring techniques are essential for achieving consistent and uniform material properties. In conclusion, the common challenges in heat treatment of special steel include precise temperature control, distortion/warping, the influence of alloying elements, and achieving uniformity across a batch. Addressing these challenges requires a thorough understanding of the steel's composition, careful process planning, and the use of appropriate process controls and monitoring techniques.
- Q: How does special steel contribute to the manufacturing of defense equipment?
- Special steel plays a crucial role in the manufacturing of defense equipment due to its unique properties and characteristics. Firstly, special steel is known for its exceptional strength and durability, making it ideal for constructing various components of defense equipment. This high strength allows for the production of lightweight yet robust structures, enabling the development of advanced weaponry and protective gear. Moreover, special steel possesses excellent resistance to corrosion and wear, making it resistant to the harsh conditions faced by defense equipment in various environments. This resistance to corrosion ensures that the equipment remains functional and reliable even in extreme conditions, such as exposure to saltwater or acidic environments. Additionally, special steel offers exceptional heat resistance, which is crucial for defense equipment such as missile casings or jet engine components. Its ability to withstand high temperatures without losing its integrity or mechanical properties allows for the creation of more efficient and powerful defense systems. Furthermore, special steel can be tailored to meet specific requirements, enabling the manufacturing of customized defense equipment. It can be alloyed with various elements to enhance specific characteristics, such as increased hardness, improved magnetic properties, or better resistance to impact. This versatility allows for the production of defense equipment that meets the exact needs of military applications, enhancing their overall performance. In summary, special steel contributes significantly to the manufacturing of defense equipment by providing exceptional strength, resistance to corrosion and wear, heat resistance, and customization options. These properties enable the creation of more advanced, reliable, and efficient defense systems that meet the demanding requirements of modern military operations.
- Q: How does special steel resist corrosion?
- Special steel resists corrosion due to the presence of specific alloying elements, such as chromium or nickel, which form a protective layer on the surface of the steel. This layer acts as a barrier, preventing oxygen and moisture from reaching the underlying steel and thus preventing the formation of rust or corrosion.
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4140 Alloy Steel, 1.7225 Steel Material, SCM440 Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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