SCM440 42CrMo4 Alloy Structural Steel Round 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
You Might Also Like
Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
SCM440 42CrMo4 Alloy Structural Steel Round Bar
Product Information:
Diameter:10mm-700mm
Length:3000mm-12000mm Straightness: 3mm/M max
Process:EAF + LF + VD + Forged + Heat Treatment (optional)
Delivery condition:Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)
Delivery Time:30-45 days
MOQ:30at treatment:
Normalized / Annealed / Quenched / tempered
Technical Data:According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing
Test:Ultrasonic test according to SEP 1921-84 G3 C/c
Marking:Grade, heat NO. length will be stamped one each bar with required color
Payment:30% advance by T\T, the balance against B/L
Application:Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.
Product Overviews:
| Product Name | Typical Grades | Diameter(mm) | Standard adopted |
| Carbon Steel | 20 (1020/S20C/C22) | Ø16-Ø300 | GB/SAE/JIS/DIN |
| 40 (1040/S40C/C40) | |||
| 45 (1045/S45C/C45) | |||
| Bearing Steel | GCr9 (51100/SUJ1) | Ø12-Ø250 | |
| GCr15 (52100/SUJ2/100Gr6) | |||
| GCr9SiMn (A485-Gr.1/SUJ3) | |||
| Cr-Mo Steel | 20Cr (5120/SCr420H/20Cr4) | Ø12-Ø250 | |
| 40Cr (5140/SCr440/41Cr4) | |||
| 42CrMo(4140/SCM440/42CrMo4) | |||
| Gear Steel | 20CrNiMo | Ø16-Ø600 | |
| 20CrMn(5115/SMnC420/20MnCr5) | |||
| 20CrNiMo(8620/SNCM220/20CrMiMo2) |
Product Show:
Our Advantages:
· Industry experience over 20 years.
· Shipment of goods -More than 70 countries worldwide.
· The most convenient transport and prompt delivery.
· Competitive price with best service.
· High technical production line with top quality products.
· High reputation based on best quality products.
With our experienced, enthusiastic and dynamic staffs, we assure to bring you the products with best quality, reasonable prices and good after-sales services under the motto: Friends First, Business After.
Communication, Experience, Expertise and Best efforts are our Promises to you.
- Q: How does special steel perform in terms of corrosion resistance in acidic environments?
- Special steel, which is also referred to as stainless steel, is highly esteemed for its exceptional resistance to corrosion in various environments, including those with acidic conditions. It is composed of a minimum of 10.5% chromium, which generates a protective layer called a passive film on the surface of the steel. This passive film acts as a barrier, preventing direct contact between the steel and the corrosive elements found in acidic environments. The chromium content in special steel enables it to react with oxygen in the atmosphere, resulting in the formation of a thin and transparent oxide layer. This oxide layer is extremely stable and capable of self-repair, which contributes to stainless steel's high resistance to corrosion caused by acids. Moreover, the presence of other alloying elements like nickel and molybdenum further enhances its ability to withstand acidic corrosion. Special steel displays excellent resistance to both general corrosion and localized corrosion, such as pitting and crevice corrosion, in acidic environments. It can endure a wide range of acid concentrations and temperatures, making it suitable for various applications in industries such as chemical processing, pharmaceuticals, and marine environments where exposure to acidic solutions is prevalent. It is worth noting that the performance of special steel in acidic environments may vary depending on the specific grade and composition of the steel. Different grades of stainless steel possess varying levels of alloying elements, which can affect their corrosion resistance properties. Therefore, it is crucial to select the appropriate grade of special steel that matches the particular acidic environment in order to ensure optimal performance and longevity.
- Q: How is spring steel used in the automotive industry?
- Spring steel is used in the automotive industry primarily for manufacturing suspension systems, including coil and leaf springs. It offers excellent elasticity, durability, and resistance to deformation, allowing it to absorb shocks and provide a smoother ride. Additionally, spring steel is also utilized in various automotive components such as clamps, brackets, and fasteners due to its high strength and corrosion resistance properties.
- Q: What is the significance of special steel in the medical field?
- Special steel, also known as medical grade steel, plays a crucial role in the medical field due to its unique properties and significance. It is specifically designed and manufactured to meet the stringent requirements of the healthcare industry. The significance of special steel in the medical field can be understood through the following points: 1. Biocompatibility: Special steel is biocompatible, meaning it is non-toxic and does not provoke an adverse reaction when in contact with the human body. This makes it an ideal material for medical devices such as surgical instruments, implants, and orthopedic tools. 2. Corrosion resistance: Special steel is highly resistant to corrosion and rust, ensuring the longevity and durability of medical instruments. Instruments used in surgical procedures need to be repeatedly sterilized, and the corrosive nature of sterilization agents can degrade ordinary steel. Special steel, with its superior corrosion resistance, can withstand these harsh conditions, reducing the risk of contamination and maintaining the integrity of medical equipment. 3. Mechanical properties: Special steel possesses excellent mechanical properties, such as high strength, toughness, and ductility. These characteristics are essential for medical devices, as they need to withstand the stresses and strains of surgical procedures, maintain their shape, and provide reliable performance. 4. Sterilization compatibility: Special steel can withstand various sterilization methods, including steam sterilization, ethylene oxide sterilization, and gamma radiation. This ensures that medical instruments made from special steel can be effectively sterilized, preventing the transmission of infections and reducing the risk of contamination during surgeries. 5. Precision manufacturing: Special steel can be fabricated into intricate shapes and sizes, allowing the production of precise medical instruments. Its superior machinability enables the creation of fine and sharp edges, crucial for surgical tools used in delicate procedures. 6. Antibacterial properties: Some special steels, such as stainless steel, possess inherent antibacterial properties. This characteristic is particularly important in the medical field, where the prevention of infections is paramount. Instruments made from antibacterial special steel can inhibit the growth of bacteria, minimizing the risk of post-operative complications. In summary, the significance of special steel in the medical field lies in its biocompatibility, corrosion resistance, mechanical properties, sterilization compatibility, precision manufacturing, and potential antibacterial properties. These qualities make special steel an indispensable material for manufacturing medical devices, ensuring their reliability, durability, and safety for both healthcare professionals and patients.
- Q: How is stainless steel used in the production of kitchen utensils?
- Stainless steel is commonly used in the production of kitchen utensils due to its durability, corrosion resistance, and aesthetic appeal. It is used to make various utensils such as knives, forks, spoons, pots, pans, and cooking tools. The stainless steel material ensures that these utensils can withstand frequent use, resist rust and staining, and are easy to clean, making them ideal for use in the kitchen.
- Q: How does quenching and tempering affect the hardness of special steel?
- Quenching and tempering significantly impact the hardness of special steel. Quenching involves rapidly cooling the steel from a high temperature, which results in a hard and brittle structure. On the other hand, tempering involves reheating the quenched steel to a specific temperature and then cooling it slowly, which reduces the brittleness and increases the toughness of the steel while maintaining a desired level of hardness. Overall, this heat treatment process modifies the microstructure of the steel, leading to a controlled increase in hardness while improving its mechanical properties.
- Q: How does special steel perform in automotive applications?
- Special steel is often used in automotive applications due to its exceptional performance characteristics. It offers superior strength, durability, and resistance to wear and corrosion, making it an ideal choice for various automotive components. In terms of strength, special steel has a higher tensile strength compared to regular steel, allowing it to withstand heavy loads and impacts. This strength is crucial in automotive applications where components need to endure extreme forces and maintain structural integrity. Special steel also exhibits excellent fatigue resistance, ensuring longevity and reliability in demanding conditions. Moreover, special steel's exceptional durability enables it to withstand harsh environments, such as extreme temperatures, chemicals, and moisture. This durability helps automotive components to maintain their functionality and performance over an extended period. Another significant advantage of special steel in automotive applications is its resistance to wear and corrosion. Automotive components are constantly exposed to friction, abrasion, and corrosive substances. Special steel's high wear resistance allows these components to endure prolonged use without significant degradation. Furthermore, its corrosion resistance protects against rust and other forms of deterioration, preventing premature component failure. Additionally, special steel can be easily shaped and formed into complex designs, enabling automotive manufacturers to create intricate components with precise specifications. This versatility and formability of special steel make it an excellent choice for various automotive applications, including engine parts, suspension systems, chassis components, and exhaust systems. Overall, special steel's exceptional strength, durability, resistance to wear and corrosion, and versatility make it a highly desirable material for automotive applications. Its performance characteristics contribute to improved safety, reliability, and efficiency in vehicles, making special steel an integral part of the automotive industry.
- Q: How is die steel used in metal stamping processes?
- Die steel is used in metal stamping processes as it is a strong and durable material that can withstand the high pressures and forces involved in shaping and forming metal. It is used to create dies, which are specialized tools that are used to shape and cut metal into specific designs or forms. The die steel acts as a mold or template, allowing the metal to be stamped, bent, or cut into the desired shape with precision and accuracy.
- Q: How does special steel contribute to the manufacturing of precision instruments?
- Special steel plays a crucial role in the manufacturing of precision instruments by providing exceptional strength, durability, and resistance to corrosion. Its unique properties allow for the production of intricate parts and components that require high precision and accuracy. Additionally, special steel offers excellent heat resistance and stability, ensuring consistent performance and reliability of precision instruments in various demanding environments and applications.
- Q: What is the purpose of cold drawing in special steel production?
- Cold drawing is utilized in special steel production with the aim of enhancing the mechanical properties and dimensional accuracy of the steel. This technique involves pulling the steel through a die at room temperature, which leads to a reduction in the cross-sectional area and an increase in the length of the steel. By undergoing this process, the microstructure of the steel is refined, resulting in improved strength, hardness, and toughness. Furthermore, cold drawing has the ability to improve the surface finish and straightness of the steel, ensuring precise dimensions and making it suitable for a wide range of applications that require high-quality steel. In summary, cold drawing plays a vital role in improving the performance and quality of special steel, making it more dependable and efficient in various industrial sectors.
- Q: What are the different methods for improving the heat resistance of special steel?
- There are several methods for improving the heat resistance of special steel. These methods include: 1. Alloying: One of the most common methods is to alloy the steel with certain elements that enhance its heat resistance. For example, the addition of chromium, nickel, or molybdenum can significantly improve the steel's ability to withstand high temperatures. 2. Heat treatment: Heat treatment processes such as annealing, quenching, and tempering can be employed to enhance the heat resistance of special steel. These processes help in refining the microstructure of the steel and improving its mechanical properties, including heat resistance. 3. Surface modification: Applying specialized coatings or surface treatments can also improve the heat resistance of special steel. For instance, processes like nitriding, carburizing, or ceramic coating can create a protective layer on the surface of the steel, preventing oxidation and improving its ability to withstand high temperatures. 4. Grain refinement: Controlling the grain size of the steel through processes like grain refinement or recrystallization can enhance its heat resistance. Smaller grain sizes reduce the diffusion of atoms within the material, making it more resistant to high temperatures. 5. Precipitation hardening: Precipitation hardening is a technique where small particles are formed within the steel matrix, strengthening the material and improving its resistance to heat. This method involves a specific heat treatment process that enables the formation of these particles. 6. Controlled cooling: Optimizing the cooling process after heat treatment can also improve the heat resistance of special steel. By controlling the cooling rate, the formation of undesirable phases or microstructural defects can be minimized, ensuring better heat resistance. 7. Material selection: Choosing the right type of special steel with inherently high heat resistance properties is another method for improving heat resistance. For example, stainless steel, tool steel, or superalloys are known for their excellent heat resistance and are often selected for applications where high temperatures are involved. It is worth noting that the selection of the appropriate method or combination of methods for improving heat resistance depends on the specific requirements and constraints of the application.
Send your message to us
SCM440 42CrMo4 Alloy Structural Steel Round 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
Similar products
Hot products
Hot Searches
Related keywords
