• Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price System 1
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Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

Grade AISI D2 Hot Rolled Steel Flat Bar with Low Price

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
3 m.t.
Supply Capability:
10000 m.t./month

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Specification

Type:
Carbon Steel
Shape:
Steel Flat Bar

Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

Specification of Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

Grades

GB

DIN

AISI

JIS

OTHERS

Cr12Mo1V1

1.2379

D2

SKD11

K110

X155CrVMo12-1

Chemical composition

C

Si

Mn

Cr

P

S

Mo

V

1.50-1.60

0.10-0.40

0.15-0.45

11.50-12.50

0.03MAX

0.03MAX

0.60-0.80

0.90-1.10

Available
size

Round Bar

Diameter

Length

10-380mm

2000-5800mm

Flat Bar

Thickness

Width

Length

12-500mm

60-900mm

2000-5800mm

Surface condition

Black surface/ Milled

Annealed hardness

HB250MAX

Characteristics

Very high resistance against abrasive and adhesive wear due to a high volume of hard carbides in the steel matrix moderate machinability good dimensional stability, toughness and through hardenability

Applications

cutting, punching, stamping tools

Shear blades

Thread rolling dies

Drawing and bending tools

Flanging and straightening rolls

Fine cutting tools

Deep drawing tools

Plastic mould for abrasive polymers

Cold extrusion dies

Drawing dies

CNBM Introduction of Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

 Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

After-sale service

  • CNBM provides the services and support you need for

    every step of our cooperation. We’re the business partners you

    can trust; you can relax and get on with doing business.

  • For any problem, please kindly contact us at any your

    convenient time, we’ll reply you in our first priority within 24 hours

Advantages  

 

  • Industry experience over 20 years.

  • Shipment of goods -More than 70 countries worldwide.

  • The most convenient transport and prompt delivery.

  • Competitive price with best service.

  • High technical production line with top quality products.

  • High reputation based on best quality products.

     

 

Packaging & Delivery of Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

Packaging Detail

Sea worthy packing /as per customer's packing instruction

Delivery Detail

15 ~ 40 days after receiving the deposit

 Products Show

Grade AISI D2  Hot Rolled Steel Flat Bar with Low Price

FAQ:   

Are you a trading company or manufacturer?

Manufacturer

What’s the MOQ?

3 metric ton

What’s your delivery time? 

15-35 days after downpayment received

Do you Accept OEM service?

Yes

what’s your delivery terms?

FOB/CFR/CIF

What's the Payment Terms?

30% as deposit,70% before shipment by T/T

Western Union acceptable for small amount.

L/C acceptable for large amount.

Scrow ,Paybal,Alipay are also ok

Why  choose  us?

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, excellent customer solution proposals.

What's your available port of Shipment?

Main Port, China

What’s your featured  services?

Our service formula: good quality+ good price+ good service=customer's trust

 

Where are your Market?

Covering more than 160 countries in the world

 

Q: What are the different methods of preventing pitting corrosion in special steel?
There are several methods available to prevent pitting corrosion in special steel. These techniques aim to protect the steel surface from the corrosive environment and inhibit the formation of pits. Some of the commonly used methods include: 1. Passivation: Passivation involves treating the steel surface with a chemical solution or coating to create a protective oxide layer. This layer acts as a barrier, preventing the penetration of corrosive agents and reducing the risk of pitting corrosion. 2. Alloying: By adding specific alloying elements to the steel composition, its resistance to corrosion can be improved. Elements such as chromium, nickel, and molybdenum are often used as they enhance the steel's ability to form a stable passive film and resist pitting corrosion. 3. Cathodic protection: This method involves using a sacrificial anode or applying an impressed current to the steel surface. By making the steel cathodic, it becomes less susceptible to corrosion as electrons are drawn away from it, preventing the formation of pits. 4. Coatings: Applying a protective coating to the steel surface can effectively prevent pitting corrosion. Coatings such as paint, epoxy, or polymer-based materials act as a physical barrier, shielding the steel from corrosive agents. 5. Environmental control: Controlling the environment surrounding the steel can also help prevent pitting corrosion. This includes measures such as regulating temperature, humidity, and pH levels to ensure they are within acceptable limits and inhibiting the corrosion process. 6. Regular maintenance: Regular inspection and maintenance of the steel surface are crucial for preventing pitting corrosion. Any signs of damage or deterioration should be addressed promptly to prevent further corrosion and potential pitting. It is important to note that the choice of prevention method depends on various factors such as the specific steel composition, the corrosive environment, and the intended application. Proper selection and implementation of these methods can significantly enhance the resistance of special steel to pitting corrosion, ensuring its longevity and performance.
Q: How is special steel produced?
Special steel is typically produced through a combination of several processes, including melting, refining, casting, and heat treatment. It involves carefully selecting and blending various alloying elements to achieve desired chemical and mechanical properties. These elements are added to molten steel, which is then refined to remove impurities. The refined steel is then cast into various shapes and forms, such as bars, sheets, or tubes. Finally, the steel undergoes heat treatment processes like tempering or quenching to further enhance its strength and other properties.
Q: How does special steel contribute to sustainable development?
Special steel contributes to sustainable development in several ways. Firstly, it is a highly durable and long-lasting material, which means that products made from special steel have a longer lifespan and require fewer replacements. This reduces the overall consumption of resources and decreases waste generation. Secondly, special steel is often used in energy-efficient applications, such as renewable energy infrastructure and energy-efficient transportation. These applications help reduce greenhouse gas emissions and contribute to the transition to a low-carbon economy. Lastly, the production of special steel involves continuous improvements in energy efficiency, waste reduction, and recycling. This helps minimize the environmental impact of the steel industry and promotes more sustainable manufacturing practices.
Q: How does special steel contribute to the manufacturing of fasteners?
Special steel is an essential material in the manufacturing of fasteners due to its unique properties and characteristics. Firstly, special steel offers high strength and durability, making it ideal for the production of fasteners that are required to withstand heavy loads and high levels of stress. This ensures that the fasteners can securely hold components together without breaking or becoming loose over time. Additionally, special steel is known for its excellent corrosion resistance. Fasteners are often exposed to various environmental conditions, including moisture, chemicals, and extreme temperatures. The corrosion resistance of special steel helps to prevent rust and deterioration, ensuring the longevity and reliability of the fasteners. Furthermore, special steel can be easily formed, machined, and heat-treated, allowing for the production of fasteners with precise dimensions and customized designs. This versatility in manufacturing processes enables the creation of fasteners that can meet specific application requirements, such as different thread types, sizes, and head styles. Moreover, special steel offers excellent wear resistance and hardness, which is crucial for fasteners that are subjected to repetitive motions or constant friction. The hardness of special steel helps the fasteners maintain their shape and integrity, reducing the risk of deformation or failure during operation. Overall, special steel plays a vital role in the manufacturing of fasteners by offering high strength, corrosion resistance, versatility in manufacturing processes, and excellent wear resistance. These properties ensure that fasteners are reliable, long-lasting, and capable of withstanding the demands of various industries, including automotive, aerospace, construction, and machinery.
Q: How does nitriding improve the wear resistance of special steel?
Nitriding is a surface hardening process that significantly improves the wear resistance of special steel. The process involves the diffusion of nitrogen atoms into the steel's surface, forming a hardened layer called nitride. This nitride layer is exceptionally hard and has a high resistance to wear, making the steel more durable and able to withstand abrasive forces and friction. The improved wear resistance of nitrided special steel is primarily due to the formation of a compound called iron nitride (Fe3N) within the nitride layer. Iron nitride has a high hardness level, typically ranging from 800 to 1000 HV (Vickers hardness). This hardness is significantly higher than the hardness of the steel's base material, contributing to the enhanced wear resistance. Additionally, the nitride layer formed during the nitriding process also increases the surface hardness of the steel. This increased hardness makes the steel more resistant to deformation and indentation, which are common causes of wear in materials subjected to friction and abrasion. Furthermore, the nitride layer acts as a barrier, protecting the underlying steel from chemical reactions, oxidation, and corrosion. This barrier prevents the steel from degrading due to exposure to harsh environments, moisture, and chemicals, thus further enhancing its wear resistance. Overall, nitriding improves the wear resistance of special steel by creating a hardened nitride layer that is exceptionally hard, resistant to wear, and acts as a protective barrier. This process significantly extends the lifespan and durability of the steel, making it ideal for applications that require high wear resistance, such as cutting tools, gears, and automotive components.
Q: How does special steel contribute to the power transmission sector?
Special steel plays a crucial role in the power transmission sector by offering enhanced strength, durability, and corrosion resistance. It is used to manufacture various components like gears, shafts, bearings, and turbines, which are essential for transmitting power efficiently and reliably. The exceptional properties of special steel ensure that these components can withstand high loads, extreme temperatures, and harsh operating conditions, thus contributing to the overall efficiency and reliability of power transmission systems.
Q: What are the different methods of improving the impact toughness of special steel?
There are several methods that can be employed to enhance the impact toughness of special steel. Here are a few commonly used techniques: 1. Heat Treatment: One of the most effective methods is heat treatment, which involves subjecting the steel to specific heating and cooling processes. For instance, quenching and tempering can significantly increase the impact toughness of steel. Quenching involves rapidly cooling the heated steel in a liquid medium such as oil or water, while tempering involves reheating the quenched steel to a specific temperature and then cooling it slowly. This process helps to refine the microstructure of the steel, making it more resistant to fracture and improving its impact toughness. 2. Alloying: Another method is alloying, which involves adding specific elements to the steel composition. Alloying elements such as nickel, chromium, and molybdenum can enhance the toughness of steel by modifying its microstructure and improving its resistance to impact. These alloying elements help in reducing the formation of brittle phases and improving the ductility of the steel. 3. Grain Refinement: The grain size of steel plays a crucial role in determining its impact toughness. By refining the grain size, the steel can exhibit improved toughness. This can be achieved through methods like controlled rolling or severe plastic deformation techniques. These techniques help in breaking down the large grains and promoting the formation of smaller, more uniform grains, resulting in enhanced toughness. 4. Shot Peening: Shot peening is a surface treatment technique that involves bombarding the steel surface with small metallic or ceramic shots. This process induces compressive stress on the surface, which helps to improve the impact toughness by reducing the likelihood of crack propagation. 5. Welding Techniques: In the case of welding special steel, specific welding techniques can be employed to enhance its impact toughness. Preheating the steel before welding and controlling the welding parameters such as heat input and cooling rate can help in reducing the formation of brittle phases and improving the toughness of the welded joint. It is important to note that the selection of the appropriate method for improving the impact toughness of special steel depends on various factors such as the desired level of toughness, the specific steel composition, and the intended application of the steel. Therefore, a comprehensive understanding of the steel's properties and the specific requirements is crucial in determining the most suitable method for enhancing its impact toughness.
Q: How does special steel perform in terms of hardness?
Special steel typically performs very well in terms of hardness. It has a higher hardness level compared to regular steel due to the addition of various alloying elements during its production. This enhanced hardness allows special steel to withstand wear, abrasion, and deformation better than other types of steel. It also enables special steel to be suitable for specialized applications that require high strength and resistance to impact or pressure.
Q: How does the microstructure of special steel affect its performance?
The microstructure of special steel plays a significant role in determining its performance. Special steels are alloyed with specific elements to enhance their properties and meet specific application requirements. The microstructure refers to the arrangement of the steel's crystalline grains and the presence of any phase transformations within the material. One critical aspect of the microstructure is the grain size. Fine-grained structures, achieved through controlled cooling or alloying additions, offer improved strength, hardness, and toughness. Smaller grain sizes hinder the movement of dislocations within the material, resulting in increased strength and hardness. This is particularly crucial in applications that require high strength-to-weight ratios, such as aerospace or automotive components. Another crucial factor is the presence of various phases in the microstructure. The addition of specific alloying elements can promote the formation of different phases, such as martensite, bainite, or ferrite. These phases have different mechanical properties, such as hardness, toughness, and corrosion resistance. By carefully controlling the microstructure, it is possible to tailor the steel's performance to specific applications. For example, martensitic structures offer high hardness and wear resistance, ideal for cutting tools, while bainitic structures provide a good balance of strength and toughness, suitable for structural components. Furthermore, the microstructure also governs the steel's response to heat treatment processes, such as quenching and tempering. Heat treatments can modify the microstructure to achieve desired mechanical properties, such as increasing hardness or improving resistance to fatigue. The microstructure's ability to transform during heat treatment allows for precise control over the steel's performance characteristics. In summary, the microstructure of special steel significantly affects its performance. Grain size, phase distribution, and response to heat treatment are all key factors that determine the steel's mechanical properties and suitability for specific applications. By understanding and manipulating the microstructure, engineers can design special steels with enhanced performance, meeting the stringent demands of various industries.
Q: How is special steel used in the production of cutting inserts?
Special steel is used in the production of cutting inserts due to its unique properties, such as high hardness, wear resistance, and heat resistance. These qualities make it effective for withstanding the high temperatures and forces involved in cutting operations. Special steel cutting inserts are designed to cut through various materials, including metals, plastics, and composites, with precision and efficiency, making them essential tools in industries such as manufacturing, automotive, and aerospace.

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