AISI 4140 Steel, SAE 4140 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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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
AISI 4140 Steel, SAE 4140 Steel Round Bar
Product Information:
| Size | ||||||||
| Round bar | Diameter(mm) | Length (mm) | ||||||
| 20~800 | 3000~9000 | |||||||
| Plate | Thickness(mm) | Width (mm) | Length (mm) | |||||
| Max:800 | Max:2200 | Max:9000 | ||||||
| The specification can be customized. | ||||||||
| Chemical Compositons | ||||||||
| Grade | C | Si | Mn | P | S | Cr | Mo | Ni |
| 42CrMo | 0.38~0.45 | 0.17~0.37 | 0.50~0.8 | ≤0.035 | ≤0.035 | 0.9~1.2 | 0.15-0.25 | ≤0.3 |
| 4140 | 0.40~0.45 | 0.15~0.35 | 0.75~1.0 | ≤0.035 | ≤0.040 | 0.8~1.1 | 0.15-0.25 | - |
| SCM44 | 0.38~0.43 | 0.15~0.35 | 0.60~0.9 | ≤0.030 | ≤0.030 | 0.9~1.2 | 0.15-0.30 | ≤0.25 |
| 1.7225 | 0.38~0.45 | ≤0.40 | 0.60~0.9 | ≤0.025 | ≤0.035 | 0.9~1.2 | 0.15-0.30 | |
Features of 4140 alloy steel
1, Chromium molybdenum alloy steel
2, Slightly higher carbon content then 4130
3, Greater strength and heat treatment
Typical Applications
1, Applications in the oil and gas sector
2, Connection rods, collets, conveyor pins,
3, Gears, stem assemblies,
4, Pump shafts and tool holders
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: How does special steel contribute to reducing product recalls?
- Special steel contributes to reducing product recalls by offering enhanced strength, durability, and corrosion resistance, thereby ensuring the integrity and reliability of various products. This reduces the likelihood of manufacturing defects, material failures, and premature breakdowns, which are common causes of product recalls. By using special steel in critical components, manufacturers can enhance product performance, safety, and longevity, leading to fewer recalls and improved customer satisfaction.
- Q: What are the main advantages of using special steel in the oil and gas industry?
- The main advantages of using special steel in the oil and gas industry include its high strength, corrosion resistance, and ability to withstand extreme temperatures and pressures. Special steel is specifically designed and manufactured to meet the demanding requirements of the industry, ensuring reliable performance and longevity. It also offers excellent weldability, which is crucial for constructing pipelines and equipment used in oil and gas operations. Additionally, special steel's durability and resistance to fatigue make it ideal for withstanding the harsh conditions and environments encountered in the oil and gas sector.
- Q: What are the different forming techniques for special steel?
- Some of the different forming techniques for special steel include forging, rolling, extrusion, and casting.
- Q: What are the different material selection factors for special steel?
- The different material selection factors for special steel include strength, corrosion resistance, heat resistance, machinability, weldability, and specific application requirements.
- Q: Can special steel be used in the production of bearings?
- Yes, special steel can be used in the production of bearings. Special steel alloys such as stainless steel or high-carbon chromium steel are often used to manufacture bearings due to their superior strength, durability, and corrosion resistance properties. These specialized steels ensure that bearings can withstand heavy loads, high temperatures, and harsh operating conditions, making them suitable for various industries, including automotive, aerospace, and manufacturing.
- Q: What are the different methods of surface pickling for special steel?
- Pickling special steel can be achieved through various methods. These methods comprise acid pickling, electrolytic pickling, mechanical pickling, and passivation. The most commonly employed method for pickling special steel is acid pickling. It entails immersing the steel in an acid solution, typically hydrochloric acid or sulfuric acid, to eliminate any surface impurities. By reacting with the steel's oxide layer, the acid dissolves it, leaving a pristine surface. Electrolytic pickling, on the other hand, involves passing an electric current through the steel submerged in an electrolyte solution. This creates a chemical reaction that removes surface impurities. Electrolytic pickling offers better control and enables a more consistent surface finish compared to acid pickling. Mechanical pickling utilizes abrasive materials like sandpaper or wire brushes to physically scrub the steel's surface and eliminate any scale or rust. It is often combined with acid or electrolytic pickling to achieve the desired surface finish. After pickling, special steel can undergo passivation to enhance its corrosion resistance. Passivation entails treating the steel with a chemical solution, typically nitric acid or citric acid, to form a protective oxide layer on the surface. This layer prevents further corrosion and enhances the steel's overall durability. It's worth mentioning that the specific method of surface pickling for special steel may vary depending on factors such as the type of steel, desired surface finish, and intended application. Therefore, it is essential to consult experts or adhere to the manufacturer's guidelines to ensure the appropriate pickling method is employed for special steel.
- Q: How does special steel perform in terms of wear resistance?
- Special steel performs exceptionally well in terms of wear resistance. It is specifically engineered to withstand abrasive forces, making it highly durable and long-lasting even in demanding environments. The unique composition and heat treatment processes used in its production enhance its hardness, toughness, and ability to resist wear, ensuring that it can withstand friction, impact, and other forms of wear and tear with minimal degradation.
- Q: What are the main characteristics of structural steel?
- Structural steel, renowned for its exceptional properties and characteristics, has become a widely utilized material in the construction industry. Its main attributes encompass: 1. Strength: Boasting an impressive strength-to-weight ratio, structural steel endures heavy loads and forces without compromising its structural integrity. As a result, it proves to be a durable and dependable choice for a multitude of construction applications. 2. Flexibility: The malleability of structural steel lends itself to effortless fabrication into diverse shapes and sizes, catering to specific project needs. This inherent flexibility empowers architects and engineers to fashion distinctive and groundbreaking structures. 3. Fire resistance: Steel's remarkable resistance to fire renders it an invaluable selection for buildings where fire protection holds utmost importance, particularly in towering edifices. Being non-combustible, it neither ignites nor aids the spread of flames. 4. Sustainability: With its high recyclability, structural steel emerges as an environmentally conscious material. At the end of its lifespan, it can be repurposed or reused, minimizing waste and conserving precious natural resources. Moreover, energy-efficient designs can be incorporated into steel structures, further contributing to sustainability. 5. Cost-effectiveness: Structural steel presents an economically viable solution for construction ventures. Its widespread availability renders it more affordable compared to alternative building materials. Furthermore, its strength and durability translate into reduced expenses for maintenance and repairs in the long run. 6. Expedited construction: The fabrication of steel structures off-site, followed by swift on-site erection, expedites construction timelines. This expeditious process curtails project duration and costs, making structural steel an ideal choice for time-sensitive undertakings. 7. Design versatility: The robustness and flexibility of structural steel facilitate the realization of a broad spectrum of architectural designs. With minimal support columns, large and open spaces can be achieved, granting architects unparalleled freedom in their creations. Consequently, steel emerges as an enticing option for numerous building types, encompassing commercial, industrial, and institutional structures. In conclusion, the main attributes of structural steel encompass strength, flexibility, fire resistance, sustainability, cost-effectiveness, expedited construction, and design versatility. These qualities render it the preferred choice for construction projects worldwide.
- Q: How does special steel contribute to the dimensional stability of products?
- Special steel is known for its high strength, durability, and resistance to deformation, making it an ideal material for enhancing the dimensional stability of products. By utilizing special steel in the manufacturing process, products are less likely to experience changes in shape or size due to external factors such as temperature fluctuations or mechanical stress. This improved dimensional stability ensures that the products maintain their intended form and functionality over time, leading to increased reliability and customer satisfaction.
- Q: What are the different methods for quenching special steel?
- There are several methods for quenching special steel, including oil quenching, water quenching, air quenching, and polymer quenching. These methods involve rapidly cooling the steel to achieve desirable hardness and strength properties. Oil quenching involves submerging the steel in oil, which provides a slower and more controlled cooling process. Water quenching, on the other hand, involves immersing the steel in water for a faster and more aggressive cooling rate. Air quenching refers to simply exposing the steel to air, allowing it to cool naturally. Lastly, polymer quenching involves using a specialized polymer solution as the quenching medium, which offers a combination of controlled cooling and reduced distortion. The choice of quenching method depends on the specific steel composition and desired properties.
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AISI 4140 Steel, SAE 4140 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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