SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar

SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar System 1

SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar System 2

SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar System 3

SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar System 4

SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar

Ref Price:: $300.00 - 500.00 / m.t.

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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1. Main application of skd11 steel:

(1) Thickness of not more than 2MM sheet, efficient blanking die, punch die and pressure die etc.

(2) All kinds of scissors, inserts, woodworking blade.

(3) Thread rolling die and wear-resistant slider.

(4) Cold Heading Die, thermosetting resin molding.

(5) Molding in deep drawing cold extrusion dies

2. Specification of skd11 steel:

Round bar	Diameter(mm)	Length (mm)
Round bar	10~800	2000~5800
plate/sheet	Thickness(mm)	Width (mm)	Length (mm)
plate/sheet	10~800	80~2300	2000~5800

3. Delivery condition of skd11 steel:

Acc. to your request—Standard steel bar(sawing)

——non-standard steel bar(sawing)

or Mill deliver condition,without sawing or cutting

Conventional or ESR, hot rolled or forged, black surface or milling

Hardness: annealed to HB≤255

4. Features of skd11 steel:

(1) Good quenching resistance, heat deformation small, wear-resistant, impact resistant.

(2) Vacuum degassing refining processing pure steel.

(3) Spheroidizing softening process, good cutting performance.

(4) Strengthen the elements vanadium, molybdenum special join, is extremely excellent in wear resistance.

5. Chemical analysis of skd11 steel:

C	Si≤	Mn≤	P≤	S≤	Cr	Mo	V
1.40~1.60	0.40	0.60	0.030	0.030	11.0~13.0	0.80~1.20	0.20~0.50

6. Compared grades of skd11 steel(based on usage)

Chinese	American	German	Swedish	Japanese
GB	AISI	DIN	ASSAB	JIS
Cr12Mo1V				SKD11

7. Heat treatment of skd11 steel (for reference)

quenching	quenching hardness	tempering	Tempering hardness
1020~1040 °c	58~60HRC	150~200 °c	62~63HRC

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SKD11 Hot Rolled 12mm Steel Rod 1.2379 Steel Round Bar

Q: How does the heat treatment process affect the hardness of special steel?: The heat treatment process has a significant impact on the hardness of special steel. Heat treatment involves heating the steel to a specific temperature, holding it at that temperature for a certain period, and then cooling it at a controlled rate. This process alters the microstructure of the steel, which in turn affects its hardness. One of the most common heat treatment techniques is quenching, which involves rapid cooling of the steel. Quenching results in the formation of a hard and brittle microstructure called martensite. The rapid cooling prevents the formation of other softer microstructures, such as pearlite or ferrite, and thus increases the hardness of the steel. Another heat treatment process that affects the hardness of special steel is tempering. After quenching, the steel is often tempered to reduce its brittleness and improve its toughness. Tempering involves reheating the quenched steel to a lower temperature and then slowly cooling it. This process allows for the transformation of some of the martensite into a more ductile microstructure, such as tempered martensite or bainite. These microstructures retain some of the hardness of martensite but also provide improved toughness and resistance to fracture. In summary, the heat treatment process significantly affects the hardness of special steel. Quenching increases hardness by forming martensite, while tempering balances hardness with improved toughness. The specific heat treatment parameters, such as temperature and cooling rate, can be adjusted to achieve the desired hardness and mechanical properties for different applications of special steel.

Q: Can special steel be used in the oil and gas industry?: Yes, special steel can be used in the oil and gas industry. Special steel alloys such as stainless steel, duplex steel, and super duplex steel are widely utilized in various applications within the industry due to their exceptional corrosion resistance, high strength, and heat resistance properties. These specialized steels provide increased durability and performance in harsh environments, ensuring the safe and efficient operation of oil and gas equipment and infrastructure.

Q: What are the properties of ultra-high-strength alloy steel?: Ultra-high-strength alloy steel possesses exceptional strength and durability due to its unique composition. It typically contains a combination of various metals, such as chromium, nickel, and molybdenum, which contribute to its enhanced mechanical properties. This type of steel exhibits superior tensile strength, allowing it to withstand extremely high loads and resist deformation. Additionally, it offers excellent toughness, meaning it can absorb energy without fracturing. Ultra-high-strength alloy steel also exhibits good corrosion resistance, making it suitable for applications in harsh environments. Overall, its remarkable properties make it an ideal choice for demanding engineering and structural applications.

Q: What are the different methods for surface hardening special steel?: There are several methods for surface hardening special steel, including carburizing, nitriding, induction hardening, flame hardening, and laser hardening. Carburizing involves introducing carbon into the surface of the steel through heating in a carbon-rich environment. Nitriding involves diffusing nitrogen into the surface of the steel to create a hard nitride layer. Induction hardening uses electromagnetic induction to heat the surface of the steel and then rapidly quench it to increase hardness. Flame hardening involves heating the surface of the steel with a flame and then quenching it to harden the surface. Laser hardening uses a high-intensity laser beam to heat the surface of the steel and then quench it, resulting in a hardened surface.

Q: How does special steel contribute to the automotive engine industry?: The automotive engine industry relies heavily on special steel, which offers exceptional strength, durability, and performance to various engine components. Special steel's distinctive characteristics make it an ideal choice for manufacturing crucial parts like crankshafts, connecting rods, camshafts, valves, and cylinder liners. One significant advantage of special steel in the automotive engine industry is its remarkable strength and ability to withstand high temperatures. Engine components face intense heat and pressure, but special steel alloys are specifically designed to maintain their structural integrity and functionality under extreme conditions. This durability improves engine efficiency, reliability, and longevity. Additionally, special steel's superior mechanical properties, such as high tensile and impact strength, allow for the production of lighter yet stronger engine components. By reducing the weight of these parts, special steel helps enhance fuel efficiency and reduce emissions, making it an environmentally friendly choice for automotive manufacturers. Special steel also enables the production of more intricate and precise engine components. Its excellent machinability and formability allow for intricate designs, tighter tolerances, and improved performance. This contributes to the overall efficiency and power output of the engine. Furthermore, special steel's corrosion resistance properties are crucial in preventing engine components from deteriorating over time. Its ability to resist rust and other forms of corrosion ensures that the engine operates optimally for an extended period, reducing maintenance costs and improving overall performance. Overall, special steel's unique properties, including strength, durability, heat resistance, and corrosion resistance, make it an essential material in the automotive engine industry. Its contribution lies in providing superior performance, efficiency, and longevity to critical engine components, ultimately enhancing the overall driving experience for consumers.

Q: What are the requirements for special steel used in corrosive environments?: Special steels used in corrosive environments are required to have specific properties to ensure their durability and performance in such conditions. The requirements for these steels can be summarized as follows: 1. Corrosion resistance: The primary requirement for special steels used in corrosive environments is excellent corrosion resistance. These steels should be able to withstand the attack of aggressive substances such as acids, alkalis, and salts. They should exhibit minimal or no signs of corrosion, ensuring the longevity of the steel and preventing any degradation in performance. 2. High strength: Special steels used in corrosive environments should possess high strength to handle the mechanical stresses imposed on them. This property is crucial for applications where the steel is subjected to heavy loads, pressures, or impacts. High strength also helps in maintaining the integrity and structural stability of the steel in corrosive conditions. 3. Resistance to pitting and crevice corrosion: Pitting and crevice corrosion are localized forms of corrosion that can occur in the presence of certain aggressive chemicals or stagnant environments. Special steels should have resistance to such forms of corrosion, as they can lead to localized damage, reduced structural integrity, and potential failure of the steel. 4. Stress corrosion cracking resistance: Stress corrosion cracking is a phenomenon that occurs when a combination of tensile stress and a corrosive environment compromises the material's integrity. Special steels should be resistant to stress corrosion cracking, ensuring their reliability under applied loads in corrosive environments. 5. Resistance to intergranular corrosion: Intergranular corrosion can occur along grain boundaries, leading to the weakening of the material. Special steels used in corrosive environments should have good resistance to intergranular corrosion, preventing any loss in structural integrity. 6. Thermal stability: Special steels should exhibit thermal stability to maintain their properties and resist degradation at elevated temperatures. This characteristic is essential for applications involving high-temperature corrosive environments. 7. Easy maintenance: Special steels used in corrosive environments should be relatively easy to maintain. This includes aspects such as ease of cleaning, resistance to fouling or scaling, and compatibility with cleaning agents or procedures commonly used in the industry. It is important to note that the specific requirements for special steels used in corrosive environments may vary depending on the application and the type of corrosive substances encountered. Therefore, it is crucial to carefully consider the particular needs and consult with experts in the field to select the most appropriate steel for each specific corrosive environment.

Q: What are the different non-destructive evaluation techniques used for special steel?: Some of the different non-destructive evaluation techniques used for special steel include ultrasonic testing, magnetic particle inspection, liquid penetrant testing, radiographic testing, and eddy current testing. These techniques allow for the detection of defects or flaws in the steel without causing any damage to the material.

Q: What are the properties of nitriding steel?: Nitriding steel is a process in which the surface of the steel is hardened and enhanced by introducing nitrogen into its structure. The properties of nitriding steel include increased surface hardness, improved wear resistance, enhanced fatigue strength, and greater corrosion resistance. Additionally, nitriding steel exhibits a low coefficient of friction, excellent dimensional stability, and increased resistance to heat and oxidation.

Q: How is special steel used in the automotive industry?: Special steel is used in the automotive industry for various applications such as manufacturing engine components, transmission systems, and chassis parts. Its high strength, durability, and resistance to corrosion make it ideal for ensuring the safety, performance, and longevity of vehicles. Additionally, special steel is used in the production of specialized tools and machinery required for automotive manufacturing processes.

Q: What are the applications of special steel in the medical field?: Special steel has various applications in the medical field due to its unique properties and characteristics. One of the primary applications of special steel in the medical field is in the manufacturing of surgical instruments. Special steel, such as stainless steel, is widely used to produce sharp, durable, and corrosion-resistant surgical instruments like scalpels, forceps, scissors, and surgical needles. These instruments need to be strong enough to withstand repeated use and sterilization without losing their sharpness or integrity, and special steel provides the necessary strength and durability. Another important application of special steel in the medical field is in the production of implants and prosthetics. Special steel alloys, including titanium alloys, cobalt-chromium alloys, and nickel-titanium alloys, are commonly used to manufacture orthopedic implants, dental implants, and various other medical devices. These alloys offer excellent biocompatibility, corrosion resistance, and mechanical strength, making them ideal for long-term implantation in the human body. Additionally, special steel is used in the construction of medical equipment and machinery. Diagnostic machines like MRI scanners and X-ray machines often utilize special steel components due to their magnetic properties and ability to withstand high temperatures. The use of special steel in medical equipment ensures the accuracy, reliability, and safety of these devices. Furthermore, special steel is employed in the manufacturing of medical storage and transportation systems. Steel cabinets, trolleys, and containers are commonly used to store and transport medical supplies, instruments, and samples. Special steel ensures the durability and hygiene of these storage systems, as it is easy to clean, resistant to contamination, and has a long lifespan. In conclusion, the applications of special steel in the medical field are extensive and diverse. From surgical instruments to implants, medical equipment to storage systems, special steel plays a vital role in ensuring the effectiveness, reliability, and safety of medical procedures and treatments. Its unique properties make it an indispensable material in the healthcare industry.

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