42CrMo4 Alloy Structure 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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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
42CrMo4 Alloy Structure Steel Round Bar
Product Information:
Heat treatment
Soft Annealing: Heat to 780-810°C, cool slowly. This will produce a maximum Brinell hardness of 240.
Stress Relieving: Stress relieving to remove machining stresses should be carried out by heating to 650°C, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening: Harden from a temperature of 1080-1160°C followed by air, oil or warm bath quenching. Hardness after quenching is 47-53 HRC.
Tempering :Tempering temperature: See the table bellow.
Tempering Temperature (oC) vs. Hardness (HRC)
Specification :
Size:round
Dia:18mm~220mm
Width:60mm-600mm
Heat treatment:Normalized ; Annealed ; Quenched ; tempered
Surface Condition:Black surface ; Grinded ; Machined
Delivery Condition:hot rolled ; cold drawn ; forged
Payment Terms:T/T;L/C
Trade Terms:FOB;CIF
Application:cold work die steel;hot work die steel;plastic die steel
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) |
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- Q: What are the different welding techniques used for special steel?
- There are several welding techniques used for special steel, including Tungsten Inert Gas (TIG) welding, Metal Inert Gas (MIG) welding, Shielded Metal Arc Welding (SMAW), and Flux-Cored Arc Welding (FCAW). Each technique has its own advantages and disadvantages, and the choice of technique depends on factors such as the type of special steel, the thickness of the material, and the desired outcome of the welding process. TIG welding is commonly used for high-quality welds on thin materials, while MIG welding is suitable for thicker materials and higher production rates. SMAW is a versatile technique, suitable for various steel types and thicknesses, and FCAW is often used for outdoor applications and on thick materials.
- Q: What are the main characteristics of electrical steel forgings?
- The main characteristics of electrical steel forgings include high magnetic permeability, low core loss, and high electrical resistivity. These properties make electrical steel forgings ideal for applications in electrical transformers, motors, and generators, where efficient magnetic performance and minimal energy loss are crucial. Additionally, electrical steel forgings are known for their excellent mechanical strength, thermal stability, and resistance to corrosion, making them durable and reliable in demanding environments.
- Q: What are the applications of special steel?
- Special steel has a wide range of applications across various industries such as automotive, aerospace, construction, and manufacturing. It is used in the production of high-performance components and structures that require exceptional strength, durability, and resistance to heat, corrosion, and wear. Special steel finds applications in engine parts, aircraft components, cutting tools, molds, and high-rise buildings, among others.
- Q: How does special steel contribute to improving product aesthetics?
- Special steel contributes to improving product aesthetics through its unique properties and characteristics. It can be shaped, molded, and finished in various ways, allowing manufacturers to create intricate and visually appealing designs. Special steel also offers a wide range of colors, textures, and surface finishes, enabling products to have a visually pleasing appearance. Additionally, its high strength and durability ensure that the product maintains its aesthetics over time, providing a long-lasting and visually satisfying experience for consumers.
- Q: How does special steel contribute to energy efficiency?
- Special steel contributes to energy efficiency in several ways. Firstly, special steel alloys are often used in the manufacturing of energy-efficient appliances, such as refrigerators and air conditioners. These steel alloys have enhanced heat transfer properties, allowing for more efficient cooling and heating processes, thereby reducing energy consumption. Secondly, special steel is commonly used in the construction of energy-efficient buildings and infrastructure. Its high strength and durability enable the creation of lightweight and sustainable structures, which require less energy for heating, cooling, and maintenance. Moreover, special steel plays a crucial role in renewable energy technology. It is used in the production of wind turbines, solar panels, and hydroelectric power plants, enhancing their efficiency and overall performance. The unique properties of special steel, such as corrosion resistance and high tensile strength, make it ideal for withstanding harsh environmental conditions and maximizing energy generation. In summary, special steel contributes to energy efficiency by enabling the development of energy-efficient appliances, constructing sustainable buildings, and optimizing renewable energy technologies. Its utilization in various industries helps reduce energy consumption and promote a more sustainable future.
- Q: How is mold steel used in injection molding?
- Mold steel is used in injection molding to create the molds or tooling that are used to produce plastic parts. The steel is used to form the cavity or core of the mold, which determines the shape of the final product. Mold steel is chosen for its high strength, durability, and heat resistance to withstand the high pressures and temperatures involved in the injection molding process.
- Q: How does copper influence the characteristics of special steel?
- Copper can greatly influence the characteristics of special steel by improving its strength, corrosion resistance, and electrical conductivity. The addition of copper to steel enhances its overall mechanical properties, making it more durable and resistant to wear and tear. Additionally, copper helps in preventing rust and oxidation, thus increasing the steel's resistance to corrosion. Moreover, copper enhances the electrical conductivity of steel, enabling it to be effectively used in electrical applications.
- Q: What are the requirements for special steel used in aircraft manufacturing?
- The requirements for special steel used in aircraft manufacturing are quite stringent due to the critical nature of the components and the demanding operating conditions in which they are subjected. Here are some key requirements: 1. High strength: Special steel used in aircraft manufacturing must possess exceptional strength to withstand the extreme forces and loads experienced during flight. This ensures the structural integrity and safety of the aircraft. 2. Lightweight: While strength is crucial, special steel for aircraft must also be lightweight to minimize the overall weight of the aircraft. This helps enhance fuel efficiency and allows for increased payload capacity. 3. Corrosion resistance: The steel must exhibit excellent resistance to corrosion, as aircraft are often exposed to harsh environments, including high humidity, saltwater, and various chemicals. Corrosion resistance helps maintain the structural integrity and prolong the lifespan of the aircraft. 4. Fatigue resistance: Special steel must have high fatigue resistance to withstand repetitive loading and unloading cycles that occur during flight. This ensures that the components do not fail prematurely due to cyclic stress. 5. Heat resistance: The steel should be able to withstand high temperatures generated by the engines, as well as the heat generated during high-speed flight. Heat resistance prevents deformation, melting, or loss of strength under extreme thermal conditions. 6. Weldability: Special steel used in aircraft manufacturing should possess good weldability, allowing for efficient and reliable joining of components during the manufacturing process. This ensures strong and secure connections between various parts of the aircraft. 7. Non-magnetic properties: In certain applications, such as electronic systems, it is essential for the steel to be non-magnetic to prevent interference with sensitive equipment. 8. Traceability and certification: The steel must have proper traceability and certification to meet industry standards and regulatory requirements. This includes documentation of the steel's composition, manufacturing process, and testing procedures to ensure consistent quality and performance. Meeting these requirements is essential to ensure the safety, reliability, and efficiency of aircraft. Special steel used in aircraft manufacturing undergoes rigorous testing, quality control, and certification processes to ensure it meets these stringent requirements before being used in the construction of aircraft components.
- Q: How does the hardness of special steel affect its performance?
- The hardness of special steel plays a crucial role in determining its performance. The hardness of steel refers to its ability to resist indentation, scratching, or deformation during use. This property is directly related to the steel's microstructure and the amount of carbon present in it. When special steel is hardened, it undergoes a process called heat treatment, typically involving rapid cooling or quenching after being heated to high temperatures. This process alters the steel's microstructure, resulting in a harder material. The increased hardness provides several benefits to the performance of special steel. Firstly, a higher hardness level enhances the wear resistance of special steel. This is particularly important in applications where the steel is subjected to abrasive or erosive forces, such as cutting tools or machinery components. A harder steel can withstand these forces without significant wear or damage, resulting in improved longevity and reliability. Secondly, the hardness of special steel affects its strength and toughness. A harder steel generally exhibits higher strength, meaning it can withstand greater forces without permanent deformation or failure. This property is advantageous in applications where the steel is subjected to heavy loads or impacts. Additionally, a certain level of toughness is necessary to prevent brittle fractures. While high hardness can make a steel more brittle, careful heat treatment can balance the hardness and toughness, ensuring the steel remains strong and resistant to fracture. Furthermore, the hardness of special steel also affects its machinability. Hardened steel can be more challenging to machine due to its increased resistance to cutting tools. However, it offers greater dimensional stability and precision during machining operations, leading to more accurate and consistent results. In summary, the hardness of special steel significantly impacts its performance. A higher hardness level provides improved wear resistance, strength, and toughness, making it suitable for demanding applications. However, the balance between hardness and toughness needs to be carefully considered to avoid brittleness. Therefore, understanding and controlling the hardness of special steel is essential to optimize its performance in various industries.
- Q: How does special steel perform in terms of thermal expansion?
- Special steel typically has a lower coefficient of thermal expansion compared to other types of steel. This means that it expands and contracts less when subjected to temperature changes, resulting in better dimensional stability and reduced risk of warping or cracking.
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42CrMo4 Alloy Structure 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
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