• 20Cr Alloy Steel Bar Forged or Hot Rolled System 1
  • 20Cr Alloy Steel Bar Forged or Hot Rolled System 2
20Cr Alloy Steel Bar Forged or Hot Rolled

20Cr Alloy Steel Bar Forged or Hot Rolled

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
50000 m.t./month

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Item specifice

Type:
Alloy Steel
Shape:
Steel Round Bar

20Cr Alloy Steel Bar Forged or Hot Rolled

 

Product Description:

Grade: ASTM 1020 / 20Cr

State:hot forging+normalizing+turning

Size:90mm to 1500mm

Length:4 to 6 meter or according to request

Billet:EAF+LF+VD

Straightness:≤4mm/m(black), ≤2mm/m(turning)
OD Tolerance:-0/+8mm(black),-0/+3 mm(turning)
Grain Fineness:ASTM E112-96 > Level 5 or better under annealing state;
Non Metallic Inclusion:ASTM E45 A/B/C/D heavy ≤2, thin ≤2.5

Test:SEP1921 CLASS C/C,D/d,E/e;GB/T 6402-91;GB/T6402-2008/ASTM A388/ASTM A709
MTC:EN 10204-3.1/EN10204-3.2   RONA/BV/SGS Certificate
Lead Time:30 to 60 days after order confirmed

 

Chemical composition:

Grade

C

Cr

Mn

Si

P

S

Ni

Cu

Mo

20Cr

0.18-0.24

0.70-1.00

0.50-0.80

0.17-0.37

0.035

0.035

0.30

0.30

0.15

 

Features and Use scope:
It has higer intensity and hardenability than 15Cr,worse toughness ,better weldability ,after welding it don't need to heat treatment.It used to making the parts which have special request in intensity of core and the larger-size appearance can bear abrasion ,or cementite parts of complex shape and seldom burthen ,such as gear , gear shaft ,cam, gudgeon pin ,worm and so on ,it also used to making tempering parts of big speed and can bear middle impact load.

 

Product Show:

20Cr Alloy Steel Bar Forged or Hot Rolled

20Cr Alloy Steel Bar Forged or Hot Rolled

20Cr Alloy Steel Bar Forged or Hot Rolled

 

Q:Can special steel be used in the production of consumer goods?
Yes, special steel can be used in the production of consumer goods. Special steel refers to steel alloys that have been specifically formulated to have unique properties, such as high strength, corrosion resistance, or heat resistance. These properties make special steel suitable for a wide range of consumer goods that require durability, strength, or resistance to wear and tear. For example, special steel can be used in the production of kitchen appliances like knives and cookware, where high strength and corrosion resistance are important. It can also be used in the manufacturing of consumer electronics, such as smartphones and laptops, where the steel may be used in the casing or internal components to provide structural integrity and protection. Furthermore, special steel is commonly used in the automotive industry for the production of various consumer goods like bicycles, motorcycles, and cars. The steel's high strength and lightweight properties make it ideal for creating strong and durable vehicle frames, engine components, and other parts. In summary, special steel can indeed be used in the production of consumer goods, as its unique properties make it suitable for applications where strength, durability, and resistance to corrosion or wear are essential.
Q:How does special steel enhance the durability of products?
Special steel enhances the durability of products by providing them with superior strength, hardness, and resistance to corrosion and wear. Its unique composition and manufacturing processes result in a material that can withstand high pressure, extreme temperatures, and harsh environments, making it ideal for applications where regular steel would fail. This enhanced durability ultimately leads to longer product lifespans, increased reliability, and reduced maintenance costs.
Q:What are the thermal conductivity properties of special steel?
Special steel, also known as alloy steel, exhibits high thermal conductivity properties. This is due to the presence of various alloying elements, such as chromium, nickel, and manganese, which enhance heat transfer. The specific thermal conductivity value of special steel depends on its composition and can vary, but it generally has good heat transfer capabilities.
Q:How does special steel perform in forging applications?
Special steel is highly valued in forging applications due to its remarkable strength, durability, and ability to withstand wear and tear. The exceptional properties of special steel, such as its high tensile strength, heat resistance, and resistance to corrosion, make it an ideal option for enduring the extreme conditions involved in forging processes. When exposed to the intense heat and pressure of forging, special steel maintains its structural integrity and mechanical properties. It can endure extreme temperature fluctuations without losing its hardness or becoming brittle, guaranteeing that the final forged product is of superior quality and reliability. Moreover, special steel offers excellent machinability and formability, enabling it to be easily shaped and manipulated during the forging process. This ease of working with special steel empowers manufacturers to create intricate and complex shapes, resulting in finely crafted forged components. Special steel also demonstrates exceptional resistance to fatigue and impact, making it highly suitable for applications that require high strength and toughness. It can endure repeated stress and load cycles without experiencing significant deformation or failure, ensuring the longevity and dependability of forged products. Additionally, special steel is renowned for its resistance to corrosion and oxidation, further enhancing its suitability for forging applications. It can withstand exposure to harsh environments, chemicals, and moisture, making it ideal for manufacturing components subjected to demanding operating conditions. Overall, special steel's outstanding performance in forging applications can be attributed to its high strength, durability, resistance to wear and tear, excellent machinability, and corrosion resistance. These properties establish it as a preferred choice in various industries, including automotive, aerospace, construction, and oil and gas, where reliable and efficient operations rely on high-quality forged components.
Q:What are the different methods for joining special steel components?
There are several methods for joining special steel components, each with its own advantages and limitations. Some of the common methods include: 1. Welding: This is one of the most widely used methods for joining steel components. It involves melting the edges of the components and fusing them together. Welding can be done using various techniques such as arc welding, gas welding, or laser welding, depending on the specific requirements of the project. 2. Bolting: Bolting involves using bolts, nuts, and washers to join steel components together. This method is preferred for applications where disassembly or maintenance may be required. It provides a strong and reliable connection but may not be suitable for high-stress applications. 3. Riveting: Riveting involves using metal fasteners called rivets to join steel components together. This method is commonly used in applications where high strength and resistance to vibration are required. Riveting is a permanent joining method that provides a strong and durable connection. 4. Adhesive bonding: Adhesive bonding involves using high-strength adhesives to join steel components together. This method is preferred for applications where aesthetics and weight reduction are important. Adhesive bonding can provide a strong and durable connection, but the surface preparation and adhesive selection are critical for ensuring the bond's strength. 5. Mechanical fastening: Mechanical fastening methods, such as using screws or clips, can also be used to join special steel components. This method is often used for temporary connections or for components that need to be easily assembled and disassembled. Each joining method has its own advantages and considerations, and the choice of method depends on factors such as the specific application, load requirements, lifespan expectations, cost considerations, and the nature of the steel components being joined. It is important to carefully evaluate these factors and consult with experts to determine the most suitable joining method for a given project.
Q:What are the different coating and plating options for special steel?
The different coating and plating options for special steel include electroplating, hot-dip galvanizing, powder coating, PVD (Physical Vapor Deposition) coating, and ceramic coating. Each option offers unique benefits such as increased corrosion resistance, improved aesthetics, enhanced durability, or specific functional properties, allowing the special steel to be tailored to various applications and environments. The choice of coating or plating depends on factors such as the desired outcome, budget, substrate material, and intended use of the special steel.
Q:What are the common applications of special steel?
Special steel, also known as alloy steel, finds wide usage across various industries owing to its distinct properties and advantages. Some prevalent applications of special steel are as follows: 1. Automotive industry: In the automotive sector, special steel is extensively employed for the production of engine components such as crankshafts, camshafts, connecting rods, and valves. Its exceptional strength, durability, and resistance to wear render it ideal for enduring the rigorous conditions within internal combustion engines. 2. Aerospace industry: The aerospace industry heavily relies on special steel for manufacturing critical components like landing gear, turbine blades, and structural parts. Its remarkable strength-to-weight ratio, excellent heat resistance, and ability to withstand extreme conditions are indispensable in ensuring the safety and reliability of aircraft. 3. Energy industry: The energy sector, particularly power generation, heavily depends on special steel. It is used in the manufacturing of turbine blades, steam pipes, pressure vessels, and other power plant components. Its capacity to endure high temperatures, pressure, and corrosive environments makes it suitable for these demanding applications. 4. Oil and gas industry: Within the oil and gas sector, special steel is extensively utilized in the production of pipes, valves, fittings, and drilling equipment. Its corrosion resistance and high strength guarantee the secure transportation and extraction of oil and gas in harsh environments. 5. Construction industry: Special steel is commonly employed in the construction sector for various purposes. It is used in the manufacturing of reinforcement bars, structural components, and fasteners. Its high tensile strength, durability, and resistance to corrosion make it an ideal choice for withstanding the loads and environmental conditions encountered in construction projects. 6. Tool and die making: Special steel is widely employed in the production of tools and dies. Its high hardness, wear resistance, and toughness make it suitable for manufacturing cutting tools, molds, dies, and other precision components used across various industries. 7. Medical industry: In the medical sector, special steel is used for the production of surgical instruments, implants, and medical devices. Its biocompatibility, corrosion resistance, and sterilization capabilities make it suitable for these critical applications. In conclusion, special steel finds extensive applications in the automotive, aerospace, energy, oil and gas, construction, tool and die making, and medical industries due to its unique properties and ability to withstand demanding conditions.
Q:Can special steel be used in the appliance manufacturing industry?
Yes, special steel can be used in the appliance manufacturing industry. Special steel, also known as alloy steel, offers enhanced properties such as durability, corrosion resistance, and high temperature resistance. These qualities make it suitable for various appliance components, including heating elements, motor shafts, and structural parts.
Q:What are the factors that affect the corrosion resistance of special steel?
There are several factors that affect the corrosion resistance of special steel. These factors include the composition of the steel, the presence of alloying elements such as chromium or nickel, the surface finish, the pH and temperature of the environment, the presence of corrosive agents such as acids or salts, and the duration of exposure to corrosive conditions. Additionally, factors such as the design and construction of the structure using the special steel can also impact its corrosion resistance.
Q:How does special steel contribute to the performance of industrial machinery?
Special steel plays a crucial role in enhancing the performance of industrial machinery in various ways. Firstly, special steel possesses superior mechanical properties such as high strength, hardness, and toughness, which make it suitable for withstanding heavy loads, vibrations, and impact forces commonly encountered in industrial applications. This enables the machinery to operate efficiently and reliably under demanding conditions. Moreover, special steel has excellent corrosion resistance, which is particularly important in industries where machinery is exposed to harsh environments or corrosive substances. By preventing the degradation of components due to corrosion, special steel helps to extend the lifespan of the machinery and reduce maintenance costs. Additionally, special steel can be tailored to specific applications through various alloying elements and heat treatments. This allows manufacturers to optimize the material's properties to meet the specific requirements of the industrial machinery, such as wear resistance, heat resistance, or high-temperature strength. By using special steel, manufacturers can achieve higher performance levels and improve the overall efficiency of their machinery. Furthermore, special steel offers superior dimensional stability and machinability. This ensures that components can be manufactured to precise specifications, thereby reducing the potential for errors or inaccuracies that may affect the performance of the machinery. The machinability of special steel also allows for easier fabrication and assembly, improving the overall production process and reducing manufacturing costs. In conclusion, special steel contributes significantly to the performance of industrial machinery through its superior mechanical properties, corrosion resistance, tailorability, dimensional stability, and machinability. By utilizing special steel in the construction of machinery components, manufacturers can enhance the durability, reliability, and efficiency of their products, ultimately leading to improved productivity and profitability in various industries.

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