Grade ASTM/AISI/SAE 5140 CNBM Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Specifications:
1. Commodity: Round steel bar
2. Technical: Hot rolling
3. Length: Min. 5.8meter, according to requirement.
4.Diameter: 16mm-250mm
Chemical Composition:
Grade | C | Si | Mn | Cr | Ni | Cu | P | S |
40Cr | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | ≤0.30 | ≤0030 | ≤0.035 | ≤0.035 |
41Cr4 | 0.38-0.45 | ≤0.40 | 0.60-0.90 | 0.90-1.20 | ≤0.030 | ≤0.030 | ≤0.035 | ≤0.035 |
5140 | 0.38-0.43 | 0.17-0.37 | 0.70-0.90 | 0.70-0.90 | ≤0.030 | ≤0.030 | ≤0.040 | ≤0.035 |
Mechanical Property:
Grade | Tensile Strengthσb (MPa) | Yield Strength | Elongation | Reduction of Area ψ (%) | Impact Akv(J) | Hardness |
σs (MPa) | δ5 (%) | |||||
5140 | ≥980(100) | ≥785(80) | ≥9 | ≥45 | ≥47 | ≤207HB |
Usage and Applications:
Gear, Sleevesspool,Shaft, Crankshaft, Pin
Packaging & Delivery:
Packaging Detail: Standard seaworthy packing or as customer required; all goods are packed in bundle with steel strips and shipped by break bulk vessel or container
Delivery Detail: 15~45 days
Production Flow:
EAF+LF+VD+ Forged+ Heat Treatment
Material prepare (billet) — heat up — rough rolling — precision rolling — cooling — packing — storage and transportation
Quality Assurance:
1. We will strictly inspect our production that we sold according to the customer’s request.
2. Our steel reaches international quality standards.
3. Quality should be in conformity with the specification of the manufacturer. Quantity and packing conditions should be in conformity with the term in the contract.
4. Should the packing found damaged, the buyer has the right to claim to the seller
- Q: What are the different methods of surface lapping for special steel?
- There are several different methods of surface lapping for special steel. These methods are used to achieve a high level of flatness and smoothness on the surface of the steel. One common method is called free abrasive lapping. In this method, a slurry containing abrasive particles is used to polish the surface of the steel. The slurry is typically applied to a rotating lap plate, which is then pressed against the steel surface. The abrasive particles remove material from the surface, resulting in a smoother and flatter surface. Another method is called fixed abrasive lapping. In this method, a rigid lap plate with abrasive particles embedded in it is used to polish the steel surface. The lap plate is typically made of a harder material than the steel being lapped. As the lap plate rotates and is pressed against the steel surface, the embedded abrasive particles remove material, resulting in a smoother surface. Chemical lapping is another method that can be used for special steel. In this method, a chemical solution is applied to the steel surface. The chemical solution reacts with the surface of the steel, dissolving and removing a thin layer of material. This method is often used when a high level of flatness is required. Ultrasonic lapping is a method that uses ultrasonic vibrations to enhance the lapping process. In this method, the steel surface is placed in contact with a bath of abrasive particles and a liquid medium. Ultrasonic vibrations are then applied to the liquid medium, causing the abrasive particles to vibrate and remove material from the surface of the steel. This method can be particularly effective for lapping hard and brittle materials. Overall, the different methods of surface lapping for special steel offer various approaches to achieve the desired level of flatness and smoothness. The selection of the method depends on factors such as the type of steel, the desired surface finish, and the specific requirements of the application.
- Q: What are the emerging trends in the special steel industry?
- Some emerging trends in the special steel industry include the increasing demand for high-strength and lightweight materials, the growing adoption of advanced manufacturing technologies such as 3D printing, the focus on sustainability and environmental impact reduction, and the rise of electric vehicles driving the need for specialized steel grades. Additionally, there is a shift towards customization and tailored solutions to meet specific industry requirements.
- Q: What are the main advantages of using special steel in the aerospace industry?
- The main advantages of using special steel in the aerospace industry are its high strength-to-weight ratio, excellent corrosion resistance, and superior heat resistance. Special steel allows aircraft to be lighter, yet still maintain the necessary structural integrity and safety standards. Its resistance to corrosion ensures the longevity of the aircraft, even in harsh environments. Additionally, special steel's ability to withstand high temperatures makes it suitable for use in jet engines and other crucial components, ensuring optimum performance and safety in aerospace applications.
- Q: How does special steel contribute to the food processing aftermarket industry?
- Special steel plays a crucial role in the food processing aftermarket industry by providing equipment and components that ensure safety, efficiency, and durability. With its exceptional properties such as corrosion resistance, high strength, and heat resistance, special steel is used to manufacture cutting blades, sieves, conveyors, and other machinery parts. This allows for precise cutting, sieving, and conveying of various food products, maintaining their quality and reducing contamination risks. Overall, special steel enhances the performance and longevity of food processing equipment, enabling the industry to meet stringent hygiene standards and increase productivity.
- Q: What are the properties of wear-resistant tool steel?
- Wear-resistant tool steel is characterized by its high hardness, strength, and resistance to abrasion and wear. It has a high carbon content, typically ranging from 0.7% to 1.5%, which contributes to its hardness and wear resistance. This type of steel is also known for its ability to retain its hardness even at high temperatures, making it suitable for applications that involve friction and heat. Additionally, wear-resistant tool steel usually exhibits good toughness and machinability, allowing it to withstand heavy usage and be easily shaped into various tool forms.
- Q: How does special steel perform in marine environments?
- Special steel is specifically designed to withstand the harsh conditions of marine environments. It offers superior corrosion resistance, high strength, and excellent durability, making it highly suitable for applications in marine settings. This type of steel can effectively resist the corrosive effects of saltwater, moisture, and other environmental factors, ensuring long-term performance and reducing maintenance requirements.
- Q: How are cobalt-based alloys used in dental applications?
- Cobalt-based alloys are used in dental applications due to their unique properties such as high strength, corrosion resistance, and biocompatibility. They are commonly used in dental prosthesis, crowns, and bridges because they can withstand the harsh oral environment and provide long-term durability. Additionally, these alloys allow for precise and accurate fitting, ensuring optimal functionality and aesthetic appeal in dental restorations.
- Q: What are the different inspection methods used for special steel?
- There are several inspection methods used for special steel, including visual inspection, magnetic particle inspection, ultrasonic testing, radiographic testing, and dye penetrant inspection. These methods help identify any surface defects, cracks, or internal flaws in the steel, ensuring its quality and integrity.
- Q: What are the main factors affecting the fracture toughness of special steel?
- The fracture toughness of special steel can be affected by several key factors, encompassing: 1. Alloy composition: The fracture toughness of the steel can be greatly influenced by its specific chemical composition, including the type and amount of alloying elements. Elements like chromium, nickel, and molybdenum have the potential to enhance toughness by promoting the formation of fine-grained microstructures or improving the steel's ability to resist crack propagation. 2. Heat treatment: Determining the fracture toughness of the steel is heavily reliant on the temperature and duration of the heat treatment process, as well as the subsequent cooling. Proper heat treatment can refine the microstructure and eliminate any potential defects, thereby enhancing the steel's resistance to fracture. 3. Microstructure: The fracture toughness of the steel is profoundly impacted by its microstructure, encompassing grain size and distribution, phase composition, and the presence of inclusions. Generally, finer-grained structures exhibit higher toughness due to their improved resistance to crack propagation. 4. Existence of defects: The presence of defects, such as cracks, voids, or inclusions, within the steel can act as stress concentrators, ultimately diminishing its fracture toughness. These defects can initiate cracks and facilitate their propagation, ultimately leading to reduced toughness. 5. Temperature: Fracture toughness is contingent upon temperature, and the behavior of special steel can significantly vary at different temperature ranges. Some steels exhibit improved toughness at lower temperatures due to microstructural transformations, while others may experience decreased toughness at elevated temperatures due to material softening. 6. Loading conditions: The fracture toughness of special steel can also be impacted by the loading conditions, including the rate of loading or the presence of dynamic loading. Higher loading rates or dynamic loading can result in reduced toughness, as the steel may not have sufficient time to deform and absorb energy before fracturing. 7. Mechanical properties: The mechanical properties of the steel, such as strength, hardness, and ductility, can influence its fracture toughness. Higher strength and hardness can sometimes lead to decreased toughness, as the material becomes more brittle. However, a balance between strength and toughness can be achieved by carefully selecting the alloy composition and heat treatment parameters. In summary, the fracture toughness of special steel is determined by a complex interplay of various factors, including alloy composition, heat treatment, microstructure, defects, temperature, loading conditions, and mechanical properties. By optimizing these factors, the fracture toughness of special steel can be enhanced for specific applications.
- Q: What are the different methods of improving the toughness of special steel?
- To enhance the toughness of special steel, various techniques can be utilized. One effective method involves the addition of alloying elements such as nickel, chromium, or manganese to the steel composition. These elements contribute to increased strength and resistance to cracking or fracturing. Another approach is to apply heat treatment processes like quenching and tempering. Quenching rapidly cools the steel from a high temperature, resulting in a hardened structure. On the other hand, tempering involves reheating the quenched steel to a specific temperature and then slowly cooling it. In addition, grain refinement techniques can be employed to improve toughness. Controlling the size and distribution of grains within the steel enhances its resistance to fracture. Methods like grain size control through recrystallization and severe plastic deformation can be used to refine the grain structure. Furthermore, maintaining low impurity content in the steel is crucial for its toughness. Impurities like sulfur and phosphorus can cause brittleness, so refining and purification processes should be employed to reduce their presence. Moreover, surface treatment methods such as shot peening or surface hardening can be implemented. Shot peening involves bombarding the steel surface with small spherical particles to induce compressive stress, which helps in resisting crack propagation. Surface hardening techniques like carburizing or nitriding create a hardened layer on the surface, enhancing toughness. In conclusion, improving the toughness of special steel can be achieved through alloying, heat treatment, grain refinement, impurity control, and surface treatment. These techniques can be used individually or in combination to enhance the steel's properties and make it more resistant to cracking or fracturing.
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Grade ASTM/AISI/SAE 5140 CNBM Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 20 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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