JIS Scr420,DIN 20Cr4,SAE 5120, Alloy Steel Bar
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- Loading Port:
- China main port
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- 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 different forms of special steel available in the market?
- In the market, one can find various types of special steel, each possessing its own distinct characteristics and uses. Here are some of the most commonly encountered forms: 1. Stainless Steel: A versatile variant of special steel, this type exhibits exceptional resistance to corrosion and staining. It finds widespread application in the manufacturing of cutlery, kitchen appliances, and medical equipment. 2. Tool Steel: Highly durable and resistant to wear and tear, this special steel is primarily employed in the production of cutting tools, molds, and dies. 3. High-speed Steel: Designed to withstand elevated temperatures and maintain hardness even at high speeds, this form is commonly utilized in the creation of drill bits, saw blades, and gear cutters. 4. Alloy Steel: To enhance strength and durability, alloying elements like chromium, nickel, or molybdenum are added to this special steel. It finds extensive use in the automotive industry, construction, and machinery manufacturing. 5. Carbon Steel: This cost-effective type of special steel is favored for its high strength-to-weight ratio. It is commonly employed in the construction of buildings, bridges, and pipelines. 6. Maraging Steel: Known for its exceptional strength and toughness, this low-carbon, high-nickel steel is frequently employed in aerospace and defense applications, including aircraft components and missile casings. 7. Spring Steel: Engineered to withstand high stress and retain its shape under heavy loads, this special steel is widely used in the production of springs, such as those found in automotive suspensions and mechanical devices. These examples merely scratch the surface of the diverse range of special steel available in the market. Each type possesses its own unique properties and applications, rendering them suitable for a multitude of industries and manufacturing processes.
- Q: What are the corrosion resistance properties of special steel?
- Special steel, also known as stainless steel, exhibits excellent corrosion resistance properties. This is primarily due to the presence of chromium, which forms a protective layer on the surface of the steel, preventing oxidation and corrosion. Additionally, special steel alloys may contain other elements such as nickel, molybdenum, and titanium, further enhancing their corrosion resistance. These properties make special steel highly suitable for various applications in industries such as construction, automotive, and aerospace, where resistance to corrosion is essential for long-term durability and performance.
- Q: What is the role of carbon in special steel?
- Special steel relies on carbon to significantly impact its properties and performance. This type of steel is specifically engineered to showcase exceptional characteristics like high strength, hardness, wear resistance, and corrosion resistance. Carbon is a key alloying element in special steel, and its content dictates many of these desired properties. To begin, carbon is responsible for enhancing the strength and hardness of special steel. When carbon is introduced into the iron matrix, it forms iron carbides, which are exceptionally hard and provide structural integrity to the steel. The higher the carbon content, the greater the steel's hardness and strength. Consequently, special steel is well-suited for applications that demand high toughness, durability, and resistance to deformation, such as the manufacturing of tools, dies, and industrial machinery components. Additionally, carbon contributes to the wear resistance of special steel. The presence of carbon enhances the steel's ability to withstand abrasion and endure extreme conditions. This is especially important in industries like mining, construction, and oil and gas, where components face intense wear and friction. Moreover, carbon plays a crucial role in determining the machinability and weldability of special steel. The carbon content influences how the steel responds to heat treatment, affecting its ease or difficulty of machining and welding. Striking the right balance of carbon content is essential to ensure that special steel can be easily worked on and fabricated into complex shapes without compromising its properties. Lastly, carbon influences the corrosion resistance of special steel. Although steel is generally susceptible to corrosion, the addition of specific amounts of carbon can enhance its resistance to rusting and other forms of corrosion. This is particularly important in applications where the steel is exposed to harsh environments, such as in the marine or chemical industries. In conclusion, carbon plays a vital role in special steel by enhancing its strength, hardness, wear resistance, machinability, weldability, and corrosion resistance. The precise amount of carbon added to the steel is carefully controlled to achieve the desired properties for specific applications. This versatility and sought-after nature make special steel a highly valued material across various industries.
- Q: Can special steel be used in the recycling industry?
- Yes, special steel can be used in the recycling industry. Special steel, also known as alloy steel, has specific properties that make it suitable for various applications. In the recycling industry, special steel can be recycled and processed to create new products, reducing the need for raw materials and conserving resources. Its durability, corrosion resistance, and high strength make it valuable in the recycling process, where it can be melted down and transformed into new steel products.
- Q: How does special steel perform in high-temperature corrosion resistance?
- Special steel typically performs well in high-temperature corrosion resistance due to its unique composition and properties. It is specifically designed to withstand the harsh conditions of high temperatures and corrosive environments. The alloying elements in special steel, such as chromium, nickel, and molybdenum, enhance its resistance to corrosion and oxidation at elevated temperatures. Additionally, the steel's microstructure and heat treatment play a crucial role in improving its high-temperature corrosion resistance. Overall, special steel exhibits excellent performance in protecting against corrosion and maintaining its structural integrity in high-temperature environments.
- Q: Can special steel be used in the aerospace defense industry?
- Yes, special steel can be used in the aerospace defense industry. It is commonly used for manufacturing various components and structures in aircraft and defense systems due to its high strength, durability, and resistance to extreme temperatures and corrosion.
- Q: What are the different coating techniques for special steel?
- There are several different coating techniques that can be used for special steel to enhance its properties and protect it from corrosion or wear. Some of the commonly used coating techniques include: 1. Electroplating: In this technique, a thin layer of metal is deposited onto the surface of the steel using an electric current. This can be done with various metals such as zinc, nickel, or chrome, depending on the desired properties of the coated steel. 2. Hot-dip galvanizing: This technique involves immersing the steel in a molten zinc bath, which forms a protective layer on the surface. Hot-dip galvanizing is commonly used for outdoor applications, as it provides excellent corrosion resistance. 3. Powder coating: In this technique, a dry powder is applied to the surface of the steel and then heated to form a protective coating. Powder coating offers a wide range of colors and finishes and provides both corrosion and wear resistance. 4. Thermal spraying: This technique involves heating a coating material, such as zinc or aluminum, to a high temperature and then spraying it onto the steel surface. Thermal spraying is commonly used for high-temperature applications, as it provides excellent resistance to heat and corrosion. 5. PVD coating: Physical vapor deposition (PVD) is a technique where a thin film of metal is deposited onto the steel surface through a vacuum process. PVD coatings can provide various properties such as hardness, wear resistance, and decorative finishes. 6. Carbonitriding: This is a surface hardening technique where the steel is heated in a furnace containing a carbon and nitrogen-rich atmosphere. Carbonitriding forms a hard, wear-resistant layer on the steel surface, improving its durability. These coating techniques offer different advantages and are chosen based on the specific requirements of the application. By applying these coatings, special steel can be made more resistant to corrosion, wear, and other forms of degradation, extending its lifespan and enhancing its performance in various industries.
- Q: What are the main advantages of using special steel in the power generation industry?
- Special steel offers several key advantages in the power generation industry. Firstly, its exceptional strength and durability make it highly resistant to the harsh operating conditions of power plants, ensuring long-lasting performance and reducing maintenance costs. Additionally, special steel's excellent heat resistance properties allow it to withstand high temperatures and pressure, crucial for power generation processes. Moreover, its corrosion resistance minimizes the risk of degradation and potential failure, enhancing overall safety and reliability. Lastly, special steel's unique composition enables it to maintain its mechanical properties at extreme temperatures, enabling efficient energy conversion and improving power plant efficiency.
- Q: Is special steel recyclable?
- Yes, special steel is recyclable.
- Q: How does special steel perform in terms of fatigue resistance?
- Special steel performs exceptionally well in terms of fatigue resistance. Its unique composition and heat treatment processes enhance its ability to withstand repeated cyclic loading, preventing the occurrence of fatigue failure. This makes special steel an ideal choice for applications where durability and longevity are crucial, such as in aerospace, automotive, and heavy machinery industries.
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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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