JIS Scr420,DIN 20Cr4,SAE 5120, Alloy Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
JIS Scr420,DIN 20Cr4,SAE 5120, Alloy Steel Bar
Product information:
Hot rolling craftwork and fine mechanical performance
Chemical components meet standards, delivery in black skin
Standards: a) JIS Scr420 b) Din 20Cr4 c) ASTM 5120 d)GB/T3077 20Cr
Size: dia 16-200mm
Length:6M above
Packing:Bundles
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Product detail:
1. Delivery condition: Hot-rolled,black surface. Hot forged +Rough machined (black surface after Q/T)+ Turned (optional), Cold-drawn Conditionm, Q+T with black surface.
2. Chemical composition: %
| C | Si | Mn | P | S | Cr |
| 0.18-0.24 | 0.17-0.37 | 0.7-1.0 | ≤0.03 | ≤0.030 | 0.5-0.9 |
3. Process: EAF + LF + VD + Forged + Heat Treatment (optional)
4. Technical Data: According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing
5. Test: ultrasonic test according to SEP 1921-84 3C/c
6. Material details will be as per agreed technical specifications
7. Certificate of Quality: issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality.
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Our service:
-High manufacturing accuracy
-High strength
-Small inertia resistance
-Strong heat dissipation ability
-Good visual effect
-Reasonable price
Chose happens because of quality, then price, We can give you both.Additionally, we can also offer professional products inquiry, products knowledge train(for agents), smooth goods delivery, exellent customer solution proposals.Our service formula: good quality+good price+good service=customer's trust
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem.
If you need the sample, please feel free to let me know. Any question, we will contact you ASAP!
Alloy steel is a kind of steel in addition to containing silicon and manganese as alloying elements and deoxidizing elements, but also contains other alloy elements such as chromium, nickel, molybdenum, vanadium, titanium, copper, tungsten, aluminum, cobalt, niobium, zirconium and other elements, and some also contain some nonmetallic elements (such as boron, nitrogen, etc.) of the steel. Alloy steel due to the presence of different kinds and quantities of alloying elements and take appropriate measures in the process, can be respectively, with high strength, toughness, quenching through resistance, abrasion resistance, corrosion resistance, resistance to temperature resistance, heat resistance and other special properties.
Alloy steel bar is mainly applicable to drill, milling cutter, reamer. It can also be used for cutting, stamping and measuring tools. It is used in the paper, packaging, printing, non-ferrous metal processing industry. In addition, it is also widely used for processing high-speed steel cutting tool, hard alloy cutter, hard alloy cutting tools, NAS cutting tool, air tool, hard alloy bit, cutter from core bit, high speed steel, taperd milling cutter, cutter metric, micro end milling cutter, the hinge pilot, electronic tools, drilling ladder, metal cutting saw, double assurance diamond, guns, angle cutter, tungsten carbide rotary burrs, hard alloy cutting tools and so on.
- Q:What are the requirements for special steel used in defense equipment manufacturing?
- The requirements for special steel used in defense equipment manufacturing typically include high strength and durability, resistance to corrosion and wear, good toughness and impact resistance, as well as the ability to withstand extreme temperatures and harsh environments. Additionally, the steel must meet stringent quality control standards and industry specifications to ensure its reliability and performance in critical defense applications.
- Q:How does special steel contribute to the pharmaceutical industry?
- Special steel contributes to the pharmaceutical industry by providing the necessary materials for the production of high-quality equipment and tools. It is used in the manufacturing of pharmaceutical machinery, such as reactors, mixers, and pumps, that require corrosion resistance and hygienic properties. Special steel also plays a crucial role in the construction of storage and transportation containers for pharmaceutical products, ensuring their safety and efficacy.
- Q:How is special steel used in the production of aircraft landing gear?
- Special steel is used in the production of aircraft landing gear due to its high strength, durability, and resistance to fatigue. It helps ensure the landing gear can withstand the stress and impact forces experienced during takeoff, landing, and taxiing. Additionally, special steel alloys are used to create components with precise dimensions and superior corrosion resistance, ensuring the landing gear performs reliably in various environmental conditions.
- Q:How does special steel compare to other materials like aluminum or titanium?
- Special steel, such as stainless steel or tool steel, offers unique properties that make it highly desirable for certain applications. Compared to materials like aluminum or titanium, special steel is generally stronger, more durable, and has better resistance to corrosion. It also often provides better heat resistance and can be easily machined or welded. However, aluminum and titanium have their own advantages such as being lighter in weight and having higher strength-to-weight ratios. The choice of material depends on the specific requirements of the application.
- Q:What are the different methods of improving the wear resistance of special steel?
- There are several methods that can be employed to improve the wear resistance of special steel. Firstly, heat treatment techniques such as quenching and tempering can be used. Quenching involves rapidly cooling the steel in a liquid medium, such as oil or water, to increase its hardness. This process forms a hardened surface layer that can resist wear. Tempering, on the other hand, involves reheating the quenched steel to a specific temperature and then cooling it slowly. This helps to reduce the brittleness caused by quenching and improve the steel's toughness, which is important for wear resistance. Another method is through alloying. Adding elements such as chromium, manganese, or vanadium to the steel can significantly enhance its wear resistance. These alloying elements form carbides, nitrides, or borides, which increase the hardness and improve the material's ability to resist wear and abrasion. Surface treatment techniques like carburizing or nitriding can also be employed. Carburizing involves introducing carbon into the steel's surface by heating it in a carbon-rich atmosphere. This forms a hardened surface layer with a high carbon content, making the steel more wear-resistant. Nitriding, on the other hand, involves diffusing nitrogen into the steel's surface, forming nitrides that increase hardness and wear resistance. Furthermore, physical vapor deposition (PVD) or chemical vapor deposition (CVD) coatings can be applied to the steel surface. PVD involves depositing a thin layer of wear-resistant material, such as titanium nitride or diamond-like carbon, onto the steel's surface using a vacuum process. CVD, on the other hand, involves depositing a wear-resistant coating by chemical reactions at elevated temperatures. These coatings provide an additional layer of protection against wear and friction. Lastly, the grain size of the steel can be controlled through processes like grain refinement or severe plastic deformation. Smaller grain sizes typically result in increased hardness and improved wear resistance. Overall, a combination of these methods can be used to enhance the wear resistance of special steel, depending on the specific application and desired properties.
- Q:How does special steel perform in nuclear applications?
- Special steel is highly valued in nuclear applications due to its exceptional properties and performance. Nuclear reactors operate under extreme conditions, including high temperatures, high pressures, and exposure to radiation. Special steel, also known as nuclear-grade steel or reactor-grade steel, is specifically designed to withstand these demanding conditions. One of the key characteristics of special steel is its excellent strength and toughness. This allows it to resist deformation and fracture even under the intense stress and pressure found in nuclear reactors. Special steel also exhibits superior heat resistance, enabling it to maintain its structural integrity at elevated temperatures. This is crucial for preventing any potential failures or structural damage that could jeopardize the safety and efficiency of the nuclear system. Furthermore, special steel possesses remarkable resistance to corrosion and oxidation. Nuclear reactors contain highly corrosive environments due to the presence of various chemical compounds and high-temperature water or steam. The corrosion resistance of special steel ensures the longevity and reliability of the reactor components, while also minimizing the risk of radioactive material release. In addition, special steel is designed to have low neutron absorption properties. Neutron absorption can lead to the formation of unwanted isotopes, which could interfere with the nuclear reactions or contribute to the production of radioactive waste. By reducing neutron absorption, special steel helps to optimize the performance and efficiency of the nuclear system. Overall, special steel is a critical material in nuclear applications as it provides the necessary strength, heat resistance, corrosion resistance, and low neutron absorption required for safe and efficient operation of nuclear reactors. Its exceptional performance ensures the integrity of the system, minimizes the risk of accidents, and contributes to the overall sustainability of nuclear energy.
- Q:How does special steel contribute to the fatigue resistance of products?
- Special steel contributes to the fatigue resistance of products through its unique properties and manufacturing processes. Firstly, special steel is specifically designed and engineered to have enhanced strength and durability, making it highly resistant to fatigue. This is achieved by incorporating alloying elements such as chromium, nickel, molybdenum, and vanadium, which improve the material's ability to withstand cyclic loading and stress. In addition, special steel undergoes rigorous heat treatment processes, such as quenching and tempering, to further enhance its fatigue resistance. These processes help refine the microstructure of the steel, resulting in a more uniform and fine-grained material. This, in turn, improves the steel's resistance to crack initiation and propagation, which are key factors leading to fatigue failure. Moreover, special steel often undergoes specialized surface treatments, such as shot peening or nitriding, which introduce compressive residual stresses on the surface of the material. These compressive stresses act as a barrier against crack formation and growth, significantly enhancing the fatigue resistance of the product. Additionally, special steel can be manufactured with specific grain orientations, such as through the use of directional solidification techniques. This allows for the alignment of grains along the primary loading direction, improving the material's fatigue performance by reducing the likelihood of crack initiation at grain boundaries. Overall, the unique properties and manufacturing processes associated with special steel contribute to its exceptional fatigue resistance. Its enhanced strength, refined microstructure, specialized surface treatments, and tailored grain orientations all work together to prolong the lifespan and reliability of products, making special steel a preferred choice in various industries where fatigue failure is a concern.
- Q:What are the different surface hardening techniques used for special steel?
- There are several different surface hardening techniques used for special steel, including case hardening, induction hardening, flame hardening, and nitriding. Case hardening involves heating the steel in the presence of a carbon-rich atmosphere to create a hardened outer layer, while induction hardening uses an electromagnetic field to heat and harden specific areas of the steel. Flame hardening involves heating the steel using a high-temperature flame, followed by quenching to achieve hardness. Nitriding is a process where the steel is exposed to nitrogen gas at high temperatures to create a hard, wear-resistant surface layer. Each technique has its own advantages and is chosen based on the specific requirements of the application.
- Q:How is alloy steel different from carbon steel?
- Alloy steel is different from carbon steel because it contains additional elements such as chromium, nickel, or molybdenum, which enhance its strength, hardness, and corrosion resistance. On the other hand, carbon steel mainly consists of iron and carbon, making it more malleable and less resistant to corrosion.
- Q:How does special steel ensure dimensional stability?
- Dimensional stability is guaranteed by special steel through a variety of mechanisms. To begin with, special steel possesses exceptional strength and toughness, enabling it to withstand external forces and prevent deformation. This characteristic is of utmost importance in applications where precise dimensional accuracy is critical, such as in precision machinery or tooling. Moreover, special steel is subjected to specific heat treatment processes to enhance its dimensional stability. For instance, the common practices of quenching and tempering are employed to augment the steel's hardness and resistance to wear, while simultaneously minimizing the risk of warping or distortion. These treatments also aid in preserving the steel's shape and size over time, even in the face of fluctuating temperature conditions. Additionally, special steel often incorporates alloying elements like chromium, nickel, or molybdenum, which contribute to its corrosion resistance. By preventing oxidation and rusting, these alloying elements assist in maintaining the steel's dimensional stability by averting any deterioration or loss of material due to corrosion. Furthermore, the manufacturing process of special steel adheres to rigorous quality control measures to ensure consistent dimensional accuracy. This encompasses meticulous control of the composition, refining techniques, and casting or forging processes. By maintaining precise tolerances during production, special steel can achieve the requisite dimensional stability demanded by specific applications. In conclusion, special steel secures dimensional stability through its exceptional strength, heat treatment processes, inclusion of alloying elements for corrosion resistance, and stringent quality control during manufacturing. These factors collectively contribute to the preservation of the steel's shape, size, and precision over time.
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JIS Scr420,DIN 20Cr4,SAE 5120, Alloy Steel Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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