AISI 4140 ASTM 42CrMo4 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
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Item specifice
Type:
Alloy Steel
Shape:
Steel Round Bar
AISI 4140 ASTM 42CrMo4 Steel Round Bar
Product Information:
Material: AISI 4140 hot rolled alloy steel bar
Diameter: 10mm-300mm
Length: 3000mm-12000mm Straightness: 3mm/M max
Process: EAF + LF + VD +rolled + Heat Treatment (optional)
Delivery condition: Hot rolled + rough machined (black surface after Q/T) + turned (optional)
Delivery Time: 30-45 days
MOQ: 25 tons
Heat 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
Application: Statically and dynamically stressed components for vehicles, engines and machines, 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:What are the different heat treatment methods for special steel?
- There are several heat treatment methods for special steel, including annealing, normalizing, quenching, tempering, and case hardening. Annealing involves heating the steel and then slowly cooling it to relieve internal stresses and improve its ductility. Normalizing is a similar process but involves cooling the steel in still air to achieve a more uniform structure. Quenching is a rapid cooling process that results in a hardened steel with increased strength and hardness. Tempering involves reheating the hardened steel to a specific temperature to reduce its brittleness and improve toughness. Finally, case hardening is a process where only the surface of the steel is hardened, while the core remains relatively soft, resulting in a tough and wear-resistant material.
- Q:Can special steel be used in aerospace turbine components?
- Yes, special steel can be used in aerospace turbine components. Special steel alloys, such as nickel-based superalloys, are commonly used in the manufacturing of turbine blades and other critical components in aerospace engines. These alloys possess high strength, excellent corrosion resistance, and can withstand extreme temperatures and stress conditions, making them suitable for the demanding environment of aerospace turbines.
- Q:How does special steel contribute to the dimensional stability of products?
- Special steel contributes to the dimensional stability of products through its unique properties and characteristics. One of the key factors is its high level of hardness, which allows it to resist deformation or changes in shape and size under varying temperature and load conditions. This hardness ensures that the product maintains its intended dimensions and shape, even when subjected to external forces or thermal fluctuations. Moreover, special steel often possesses excellent thermal conductivity, enabling it to efficiently distribute and dissipate heat. This property helps prevent localized heating or cooling, which can cause dimensional changes in materials. By maintaining consistent temperatures across the product, special steel minimizes the risk of warping, expansion, or contraction, thereby ensuring dimensional stability. Another aspect that contributes to dimensional stability is the low coefficient of thermal expansion of special steel. This coefficient measures the amount of expansion or contraction a material undergoes in response to temperature changes. Special steel's low coefficient means it experiences minimal dimensional changes when exposed to temperature variations. This characteristic is particularly crucial in applications where precise tolerances and tight dimensional control are required, such as in aerospace or automotive industries. Furthermore, special steel often possesses enhanced corrosion resistance, which helps prevent rusting or degradation of the material over time. Corrosion can lead to changes in the shape and dimensions of products, compromising their dimensional stability. By using special steel, manufacturers can ensure that their products maintain their original dimensions and structural integrity, even in harsh or corrosive environments. Overall, the unique properties of special steel, such as high hardness, excellent thermal conductivity, low coefficient of thermal expansion, and corrosion resistance, all contribute to the dimensional stability of products. By incorporating special steel into the manufacturing process, companies can produce high-quality products that maintain their precise dimensions and shape, ensuring reliability and longevity for end-users.
- Q:What are the different methods for improving the corrosion resistance of stainless special steel?
- There are several methods for improving the corrosion resistance of stainless special steel. Some of the common methods include alloying the steel with elements such as chromium, nickel, and molybdenum, which enhance its resistance to corrosion. Another method is passivation, which involves treating the steel with an acid solution to remove any surface contaminants and create a protective oxide layer. Coating the steel with materials like paint, powder coating, or electroplating can also improve its corrosion resistance. Additionally, proper cleaning and maintenance practices, such as regular removal of dirt and debris, can help prevent corrosion and maintain the steel's resistance over time.
- Q:What are the different types of welding techniques used for special steel?
- There are various types of welding techniques used for special steel, depending on the specific requirements and properties of the steel being used. Some of the common welding techniques for special steel include: 1. Shielded Metal Arc Welding (SMAW): Also known as stick welding, SMAW uses a consumable electrode coated in flux to create an electric arc between the electrode and the base metal. This technique is commonly used for thicker sections of special steel due to its high heat input and deep penetration. 2. Gas Metal Arc Welding (GMAW): Also known as MIG welding, GMAW uses a continuously fed wire electrode and a shielding gas to protect the weld from atmospheric contamination. This technique is versatile and widely used for special steel due to its ability to produce high-quality welds with good control. 3. Gas Tungsten Arc Welding (GTAW): Also known as TIG welding, GTAW uses a non-consumable tungsten electrode and a shielding gas to create an electric arc. This technique is often used for special steel alloys that require precise control over the welding process and where the weld quality and appearance are critical. 4. Flux-Cored Arc Welding (FCAW): Similar to GMAW, FCAW uses a continuously fed tubular electrode filled with flux. This technique is commonly used for special steel applications that require high deposition rates and deep penetration, such as in heavy fabrication or structural welding. 5. Submerged Arc Welding (SAW): SAW involves the formation of an arc between a continuously fed bare electrode and the workpiece, while a layer of granular flux covers the arc. This technique is typically used for heavy-duty applications and thick materials, providing high deposition rates and excellent weld quality. 6. Laser Beam Welding (LBW): LBW uses a highly focused laser beam to melt and join the special steel parts. This technique offers precise control, high welding speeds, and minimal distortion, making it suitable for specialized applications that demand high precision and minimal heat-affected zones. It is important to note that the selection of the appropriate welding technique for special steel depends on factors such as material composition, thickness, joint configuration, and desired weld properties. Proper knowledge and expertise are required to determine the best welding technique for a specific application to ensure optimal results in terms of weld quality, strength, and durability.
- Q:What are the environmental impacts of special steel production?
- The environmental impacts of special steel production include emissions of greenhouse gases, such as carbon dioxide, during the manufacturing process. Additionally, the extraction and processing of raw materials for special steel production can contribute to habitat destruction, deforestation, and water pollution. Special steel production also consumes significant amounts of energy, contributing to fossil fuel depletion and air pollution.
- Q:Can special steel be used in the construction equipment manufacturing industry?
- Yes, special steel can be used in the construction equipment manufacturing industry. Special steel is known for its high strength, durability, and resistance to wear and corrosion, making it an ideal material for producing heavy-duty construction equipment such as excavators, bulldozers, cranes, and loaders. Additionally, special steel can be customized to meet specific requirements, ensuring the construction equipment meets the necessary performance and safety standards.
- Q:How does special steel perform in extreme pressure conditions?
- Special steel is specifically designed to perform exceptionally well in extreme pressure conditions. Due to its unique composition and manufacturing process, special steel exhibits high strength, durability, and resistance to deformation, making it ideal for applications where extreme pressures are involved. When subjected to extreme pressure conditions, special steel is able to maintain its structural integrity without undergoing significant deformations. This is due to its high tensile strength, which enables it to withstand tremendous forces without breaking or bending. Additionally, the special steel's hardness and toughness allow it to resist wear and damage caused by the intense pressure. Furthermore, special steel possesses excellent heat resistance, which is crucial in extreme pressure conditions where elevated temperatures are often present. The steel's ability to withstand high temperatures without losing its mechanical properties ensures its reliability and effectiveness even under the most demanding circumstances. Moreover, special steel has excellent corrosion resistance properties, making it suitable for use in extreme pressure conditions where exposure to corrosive substances is a concern. The steel's resistance to oxidation and other chemical reactions prevents it from deteriorating or weakening, ensuring its long-term performance and reliability. Overall, special steel performs exceptionally well in extreme pressure conditions due to its high strength, durability, resistance to deformation, heat resistance, and corrosion resistance. These properties make it a reliable and efficient choice for various industries and applications that operate under extreme pressure environments, such as oil and gas exploration, aerospace, automotive, and heavy machinery manufacturing.
- Q:How does surface treatment enhance the performance of special steel?
- Surface treatment enhances the performance of special steel by improving its resistance to corrosion, wear, and fatigue. This treatment creates a protective layer on the surface of the steel, which acts as a barrier against environmental factors such as moisture, chemicals, and abrasive substances. It also enhances the steel's hardness, smoothness, and adhesion, leading to improved durability, strength, and longevity. Additionally, surface treatment can provide aesthetic benefits, such as improved appearance and color options, further enhancing the overall performance of special steel.
- Q:How does special steel ensure dimensional stability?
- Special steel ensures dimensional stability through a combination of factors such as controlled composition, precise heat treatment, and careful manufacturing processes. The specific composition of special steel is designed to have a lower coefficient of thermal expansion, which means it expands and contracts less with changes in temperature compared to regular steel. This ensures that the dimensions of the steel remain stable even under varying temperature conditions. Additionally, the heat treatment process further enhances the dimensional stability by refining the microstructure and reducing internal stresses. The careful manufacturing processes, including precise machining and quality control, also contribute to maintaining dimensional stability in special steel products.
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AISI 4140 ASTM 42CrMo4 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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