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 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 properties of high-temperature tool steel?
- High-temperature tool steel possesses a combination of properties that make it suitable for use in high-temperature applications. It has excellent hardness, toughness, and wear resistance, enabling it to withstand extreme temperatures without losing its shape or strength. Additionally, it exhibits good thermal conductivity and dimensional stability, ensuring that it maintains its form and performance even under high heat and thermal cycling.
- Q: How does special steel perform in high-pressure and high-temperature environments?
- Special steel performs exceptionally well in high-pressure and high-temperature environments due to its unique composition and properties. It exhibits excellent strength, toughness, and resistance to corrosion, making it ideal for withstanding extreme conditions. Additionally, special steel can maintain its mechanical properties, structural integrity, and dimensional stability even under intense heat and pressure, ensuring reliable performance and longevity in such environments.
- Q: What are the common challenges in heat treating titanium alloys?
- Heat treating titanium alloys can present several common challenges. One of the main challenges is the high reactivity of titanium with oxygen, nitrogen, and hydrogen at elevated temperatures. This reactivity can lead to surface contamination and the formation of undesirable oxides, nitrides, or hydrides, which can affect the mechanical properties of the alloy. Another challenge is the formation of alpha-case, a thick layer of alpha-phase titanium on the surface of the alloy during heat treatment. Alpha-case is brittle and can significantly reduce the fatigue strength and ductility of the material. Therefore, minimizing or eliminating the formation of alpha-case is crucial in heat treating titanium alloys. Furthermore, titanium alloys have a narrow temperature range for effective heat treatment. If the temperature is too low, it may not achieve the desired microstructure and mechanical properties. On the other hand, if the temperature is too high, it can lead to grain growth, which can reduce the strength and toughness of the alloy. Additionally, the heat treatment of titanium alloys often requires precise control of the heating and cooling rates to achieve the desired microstructure and properties. Rapid or uneven cooling can result in non-uniform microstructures, residual stresses, or distortion of the part. Finally, the cost of heat treating titanium alloys can be a challenge. Titanium alloys have a high affinity for oxygen, which necessitates the use of specialized equipment, such as vacuum furnaces or controlled atmosphere furnaces, to maintain a low oxygen environment. These specialized heat treatment processes can be expensive and require careful handling and maintenance to ensure the desired results. In conclusion, the common challenges in heat treating titanium alloys include managing reactivity with oxygen, nitrogen, and hydrogen, minimizing alpha-case formation, achieving the correct temperature range, controlling heating and cooling rates, and dealing with the cost of specialized equipment and processes. Overcoming these challenges is essential to obtain high-quality titanium alloy components with desired properties.
- Q: What are the properties of wear-resistant stainless steel?
- Wear-resistant stainless steel has several properties that make it highly effective in resisting wear and tear. Firstly, it has a high hardness level, which allows it to withstand abrasive forces and maintain its shape under heavy loads. Additionally, it exhibits excellent corrosion resistance, preventing rust or degradation even in harsh environments. This type of stainless steel also possesses good impact resistance, meaning it can withstand sudden impacts without cracking or breaking. Furthermore, wear-resistant stainless steel typically has a low coefficient of friction, reducing frictional forces and minimizing wear when in contact with other materials. Overall, these properties make wear-resistant stainless steel a durable and reliable choice for applications where wear and tear are major concerns.
- Q: How is bearing steel used in the manufacturing of bearings?
- Bearing steel is specifically designed for the manufacturing of bearings due to its high hardness, wear resistance, and excellent rolling contact fatigue strength. This type of steel is used to produce the inner and outer rings, as well as the rolling elements of bearings. It undergoes a specialized heat treatment process to enhance its mechanical properties and ensure proper microstructure. The use of bearing steel in manufacturing ensures the durability and longevity of bearings, allowing them to withstand heavy loads, high temperatures, and corrosive environments.
- Q: How does special steel perform in pharmaceutical applications?
- Due to its unique properties and characteristics, special steel is highly sought after in pharmaceutical applications. Its exceptional corrosion resistance is especially important in pharmaceutical environments where chemical substances and aggressive cleaning agents are commonly used. This corrosion resistance ensures the steel remains durable and maintains its integrity over time. Furthermore, special steel is renowned for its strength and durability, making it suitable for applications that involve heavy loads or frequent use. This strength allows the steel to withstand the demanding requirements of pharmaceutical processes, such as mixing, grinding, and sterilization, without compromising its structural integrity. Another significant advantage of special steel in pharmaceutical applications is its hygienic properties. It is highly resistant to bacterial growth and easy to clean, making it perfect for environments where cleanliness and sterility are of utmost importance. The smooth surface of special steel prevents the accumulation of dirt, bacteria, and other contaminants, reducing the risk of contamination and ensuring the safety and quality of pharmaceutical products. Moreover, special steel offers excellent temperature resistance, enabling it to endure extreme temperatures and thermal cycling commonly encountered in pharmaceutical processes. This thermal stability guarantees that the steel retains its mechanical properties and dimensional stability, even under fluctuating temperature conditions. Overall, special steel's corrosion resistance, high strength, hygienic properties, and temperature resistance make it a trustworthy and versatile material for pharmaceutical applications. Its exceptional performance in these challenging environments contributes to the production of safe and high-quality pharmaceutical products.
- Q: What are the different methods for controlling the grain size in special steel?
- There are several methods for controlling the grain size in special steel. 1. Heat treatment: One common method is heat treatment, which involves subjecting the steel to specific temperatures and cooling rates. This process can be used to refine the grain size by controlling the rate of nucleation and growth of new grains. For example, slow cooling can promote the formation of larger grains, while rapid cooling can result in smaller grain sizes. 2. Alloying elements: Adding certain alloying elements to the steel can also influence the grain size. For instance, elements like vanadium, niobium, and titanium can form carbides, which act as nucleation sites, leading to finer grain sizes. On the other hand, elements like aluminum and silicon can promote the formation of larger grains. 3. Mechanical deformation: Applying mechanical deformation to the steel, such as through rolling or forging, can also affect the grain size. These processes cause grain refinement by breaking up larger grains into smaller ones. Additionally, severe plastic deformation techniques like equal-channel angular pressing can produce ultrafine grains in special steel. 4. Grain growth inhibitors: Certain elements can act as grain growth inhibitors, preventing the coarsening of grain size during heat treatment. Examples of such elements include boron and zirconium. By controlling the concentration of these inhibitors, it is possible to inhibit grain growth and maintain a desired grain size. 5. Controlled cooling: Controlling the cooling rate during solidification and heat treatment is another method for controlling grain size. By carefully controlling the cooling rate, it is possible to achieve a specific grain size or a desired distribution of grain sizes. It is important to note that the choice of method for controlling grain size in special steel depends on the specific application and desired properties of the steel. Different methods may be employed in combination to achieve the desired grain size and optimize the performance of the steel for its intended use.
- Q: What are the different methods for improving the corrosion resistance of special steel?
- There are multiple techniques available to enhance the corrosion resistance of special steel. 1. Alloying: Adding alloying elements, like chromium, nickel, and molybdenum, to the steel composition is a widely used method. These elements create a protective layer on the steel surface, preventing corrosion. For instance, stainless steel contains a substantial amount of chromium, which forms a passive film that shields the steel from corrosive surroundings. 2. Surface treatments: Diverse surface treatments can be applied to special steel to augment its corrosion resistance. These treatments include electroplating, hot-dip galvanizing, and chemical passivation. Electroplating involves coating the steel with a layer of zinc or nickel, serving as a sacrificial anode that safeguards the steel from corrosion. Hot-dip galvanizing entails immersing the steel in molten zinc to form a durable and corrosion-resistant layer. Chemical passivation involves treating the steel with a solution that eliminates surface impurities and forms a protective oxide layer. 3. Protective coatings: The application of protective coatings can considerably enhance the corrosion resistance of special steel. Coatings like paint, epoxy, or polyurethane act as barriers, preventing moisture and corrosive substances from contacting the steel surface. These coatings can be applied through spray, dip, or powder coating methods. 4. Heat treatment: Modifying the microstructure of special steel through heat treatment improves its corrosion resistance. Processes like annealing, quenching, and tempering can alter the steel's properties, making it more resistant to corrosion. Heat treatment can also alleviate internal stresses that contribute to corrosion. 5. Environmental control: Controlling the environment in which the special steel is utilized can also aid in improving its corrosion resistance. This includes maintaining appropriate humidity levels, controlling pH, avoiding exposure to corrosive chemicals, and implementing effective ventilation systems. By minimizing the exposure of special steel to corrosive elements, its corrosion resistance can be enhanced. In conclusion, a combination of these methods can be employed to enhance the corrosion resistance of special steel, ensuring its durability and performance in corrosive environments.
- Q: What are the properties of high-temperature stainless steel?
- High-temperature stainless steel possesses excellent heat resistance, corrosion resistance, and mechanical strength even at elevated temperatures. It retains its structural integrity and is capable of withstanding extreme thermal conditions, making it suitable for various high-temperature applications such as in aerospace, power generation, and chemical industries.
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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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