Steel Bar 41cr4 40cr ASTM 5140 Round Bar
- Ref Price:
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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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Item specifice
Type:
Alloy Steel
Shape:
Steel Round Bar
Steel Bar 41cr4 40cr ASTM 5140 Round Bar
Product Information:
1. Stock advantage
2. Completed size and material
3. Quick producing abilities
4. Flexible payment term
| Standard | GB/T699,GB/T700,GB/T702,GB/T3077 |
| Grade | alloy bar: 20Cr,40Cr,20CrMo, 35CrMo,42CrMo, |
| carbon bar:Q235B,20#,35#,45# | |
| Dimensions | Dia 10mm-1000mm |
| Place of Origin | China (Mainland) |
| Secondary Or Not | Non-secondary |
| Application | Structure bar, |
| Technique | Forged |
| Certification | API |
| Alloy Or Not | Is Alloy |
| packing | Hexagon bundle or bare bundle |
| Delivery | By container/train/lorry |
| Delivery time | 10days |
| Third Party Inspection | SGS/BV/LORDS |
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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· Industry experience over 20 years.
· Shipment of goods -More than 70 countries worldwide.
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· 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 free-cutting steel improve machinability?
- Free-cutting steel improves machinability by containing additional elements, such as sulfur, lead, or phosphorus, which help to break the chips and aid in chip removal during the machining process. These elements act as lubricants, reducing friction and heat generation, which results in improved surface finish and reduced tool wear.
- Q:How does special steel resist wear and tear?
- Special steel resists wear and tear due to its unique composition and manufacturing process. It is made with a higher percentage of alloying elements such as chromium, nickel, and molybdenum, which enhance its hardness, strength, and corrosion resistance. This increased hardness enables the steel to withstand abrasion, friction, and impact, making it highly durable and resistant to wear and tear. Additionally, special steel undergoes specialized heat treatments and mechanical processes that further enhance its toughness and resistance to deformation, contributing to its ability to withstand harsh and demanding conditions without significant deterioration.
- Q:Can special steel be heat treated?
- Yes, special steel can be heat treated. Heat treatment is a common method used to modify the properties of steel, including improving its hardness, toughness, and strength. Special steels, which have specific alloying elements added to enhance their performance in certain applications, can also undergo heat treatment to optimize their properties for specific purposes.
- Q:What are the different heat-resistant grades of special steel?
- There exists a variety of specialized steel grades that possess heat-resistant properties and are specifically engineered to endure elevated temperatures and thermal stress. Some of the commonly utilized heat-resistant grades are as follows: 1. Stainless Steel 310: Renowned for its exceptional resistance against high temperatures, oxidation, and corrosion, stainless steel 310 is capable of withstanding temperatures up to 1100°C (2012°F). It finds extensive application in furnace components, heat treatment baskets, and other heat-intensive scenarios. 2. Inconel 600: Inconel 600 is a nickel-chromium alloy that exhibits remarkable resistance to high temperatures and oxidation. It remains effective within a temperature range spanning from cryogenic levels to 1093°C (2000°F) and is widely employed in gas turbines, heat exchangers, and other environments characterized by elevated temperatures. 3. Hastelloy C-276: Hastelloy C-276, a nickel-molybdenum-chromium alloy, offers outstanding resistance against a broad array of corrosive settings and high temperatures. It can withstand temperatures up to 1093°C (2000°F) and is commonly utilized in chemical processing, power generation, and pollution control applications. 4. Titanium Grade 2: Titanium Grade 2 is a commercially pure titanium alloy that presents favorable resistance to high temperatures and corrosion. It remains effective in temperatures up to 538°C (1000°F) and is frequently employed in heat exchangers, chemical processing equipment, and marine applications. 5. Alloy 617: Alloy 617 is a nickel-chromium-cobalt-molybdenum alloy that showcases exceptional strength and resistance to high-temperature environments. It can endure temperatures up to 1204°C (2200°F) and is commonly utilized in gas turbines, petrochemical plants, and other industries that entail significant heat exposure. These aforementioned examples represent merely a fraction of the heat-resistant grades of specialized steel accessible in the market. The appropriate grade selection relies on the specific temperature requirements, corrosion resistance, and mechanical properties demanded by the application at hand.
- Q:What are the different methods of protecting special steel against corrosion?
- There exists a variety of techniques for safeguarding special steel from corrosion. Some commonly employed methods are as follows: 1. Application of Coatings: One of the most efficient approaches to prevent corrosion is to apply a protective coating onto the steel surface. This can be accomplished using diverse techniques like hot-dip galvanization, electroplating, or painting. The coatings act as a barrier, effectively preventing moisture and corrosive substances from coming into contact with the steel. 2. Utilization of Cathodic Protection: This method involves the use of either a sacrificial anode or an impressed current to shield the steel. In sacrificial anode cathodic protection, a more reactive metal is connected to the steel, thereby causing the sacrificial metal to corrode instead of the steel. Conversely, impressed current cathodic protection employs an external power source to provide a continuous flow of electrons, thus halting the corrosion process. 3. Alloying: The addition of specific elements to special steel can enhance its resistance against corrosion. For instance, stainless steel contains chromium, which forms a passive oxide layer on the surface, providing protection against corrosion. Likewise, the inclusion of elements like nickel, molybdenum, or copper can improve the steel's resistance to corrosion. 4. Passivation: Passivation is a chemical process that involves treating the steel with an acid solution to eliminate any impurities present on the surface. This process facilitates the formation of a protective oxide layer, thereby preventing further corrosion. 5. Use of VCI (Volatile Corrosion Inhibitors): VCI compounds are chemicals that emit vapors, forming a protective layer on the steel surface. This layer acts as a barrier, effectively safeguarding the steel against moisture and corrosive substances, thereby preventing corrosion. 6. Proper Maintenance and Cleaning: Regular maintenance and cleaning of the steel surface can significantly prolong its lifespan and prevent corrosion. By eliminating dirt, debris, and corrosive substances from the surface, the likelihood of corrosion is greatly reduced. It is essential to note that the selection of the appropriate method relies on various factors, such as the type of steel, the environmental conditions it will be exposed to, and the expected lifespan. Seeking guidance from corrosion experts or engineers can aid in determining the most suitable method for protecting special steel against corrosion.
- Q:How does alloy steel improve the strength and toughness of steel?
- Alloy steel improves the strength and toughness of steel by adding specific elements, such as manganese, chromium, nickel, or molybdenum, to the base iron. These alloying elements create atomic interactions within the steel matrix that enhance its properties. They help to refine the grain structure, increase hardenability, and improve resistance to wear, corrosion, and fatigue. By modifying the composition, alloy steel can achieve a balanced combination of strength, toughness, and other desirable characteristics, making it more suitable for various applications.
- Q:What are the different methods for improving the creep resistance of special steel?
- There are several methods for improving the creep resistance of special steel. One approach is through alloying, where elements such as chromium, molybdenum, and tungsten are added to enhance the strength and stability of the steel at high temperatures. Another method is by heat treatment, which involves controlled heating and cooling processes to optimize the microstructure of the steel and improve its creep resistance. Additionally, surface treatments like carburizing or nitriding can be applied to increase the hardness and wear resistance of the steel, thereby improving its creep resistance. Lastly, proper design and engineering considerations, such as using thicker sections or incorporating reinforcements, can also contribute to enhancing the creep resistance of special steel.
- Q:How does special steel contribute to improving product safety in high-risk industries?
- Special steel plays a crucial role in enhancing product safety in high-risk industries due to its unique properties. Its exceptional strength, durability, and resistance to corrosion and wear make it ideal for manufacturing critical components in sectors like aerospace, automotive, and energy. By using special steel, manufacturers can ensure that their products can withstand extreme conditions, reducing the risk of failure or malfunction. This, in turn, enhances the safety of the end-users and prevents potential accidents or disasters in high-risk industries.
- Q:What are the different test methods used to evaluate special steel?
- Special steel undergoes several test methods to evaluate its quality and performance, ensuring that it meets the required standards and specifications. Commonly employed test methods include: 1. Tensile Testing: This method assesses the steel's ability to withstand tension or pulling forces, determining its ultimate tensile strength, yield strength, and elongation. 2. Hardness Testing: Hardness tests, such as Rockwell or Brinell tests, evaluate the steel's resistance to indentation or scratching, providing insight into its strength and durability. 3. Impact Testing: This test measures the steel's capacity to absorb energy under high-stress conditions. Charpy and Izod tests are frequently used to determine the steel's toughness and resistance to sudden shocks or impacts. 4. Chemical Analysis: Determining the steel's composition, including the percentage of elements like carbon, manganese, and chromium, guarantees that it meets the necessary specifications and standards. 5. Microstructure Evaluation: Microscopic examination of the steel's microstructure reveals crucial information about its grain size, phase distribution, and any potential defects or inclusions. Optical microscopy or electron microscopy techniques are employed for this purpose. 6. Corrosion Testing: Special steel must endure harsh environments or corrosive substances. Various corrosion tests, such as salt spray tests or immersion tests, assess the steel's resistance to corrosion and degradation. 7. Non-Destructive Testing (NDT): NDT methods, including ultrasonic testing, magnetic particle testing, or eddy current testing, detect surface or internal defects without damaging the steel. These tests provide valuable information about the steel's structural integrity. 8. Fatigue Testing: Fatigue tests simulate repetitive loading conditions to evaluate the steel's resistance to cyclic stress, assessing its durability and ability to withstand long-term usage or repetitive loading. Utilizing these diverse test methods, manufacturers and quality control departments can thoroughly assess the mechanical properties, chemical composition, microstructure, and other crucial factors of special steel, ensuring it meets the necessary standards and specifications.
- Q:How does special steel contribute to the renewable energy conversion efficiency?
- Special steel plays a crucial role in improving the efficiency of renewable energy conversion by providing strength, durability, and resistance to extreme conditions. It is used in various components of renewable energy systems such as wind turbines, solar panels, and hydropower plants. The high strength-to-weight ratio of special steel enables the construction of taller wind turbine towers, allowing them to capture more wind energy at higher altitudes. Additionally, special steel is used in the production of high-efficiency solar panels, as it helps enhance their performance by increasing structural integrity and resistance to corrosion. In hydropower plants, special steel is employed to construct turbines and generators that can withstand the immense pressures and forces involved in generating electricity from water. Overall, the use of special steel in renewable energy systems contributes to their overall efficiency and longevity, aiding in the transition towards a sustainable energy future.
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Steel Bar 41cr4 40cr ASTM 5140 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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