Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar System 1

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar System 2

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar System 3

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar System 4

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 3 m.t.

Supply Capability:: 100000 m.t./month

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Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Details Information of Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Name	8620H 40CrNiMoA Steel Round Bar
Shape	Round Bar/Square Bar/Flat Bar/Plate/Wire
Standard	GB/ASTM/SAE/AISI/DIN/JIS/EN/BS
Surface Treatment:	Black/Peeling/Polished/Machined
Delivery Condition:	Hot Rolled or Forged/Peeled or Black Surface
Test	SGS/UT 100% Elements Testing
Certificate:	ISO/Mill Certificate
Service:	24 hours online service /
Service:	more than 20 years trading and manufacture
Quality Assurance:	the third party inspection, such as SGS, BV, TUV…etc. is acceptable
Packaging Details:	Seaworthy Packaging or as per customer's packing instruction

Carbon structure round bar	Q195 Q235A Q235B 10# 20#-55# S45CB
Low alloy high strength round bar	Q345A/Q345C/Q345D Q345B Q345E
Alloy structure round bar	SAE51B20 20Cr 40Cr 40CrV 20CrMo/30CrMo/35CrMo/42CrMo 20CrMoA/30CrMoA/35CrMoA/42CrMoA/42Cr ML20CrMo/ML30CrMo/ML35CrMo/ML42CrMo B7/SCM435-440 20MnTiB 20CrMnMo 20CrMoH 42CrMoH 40MnB/40MnBH 30Mn2-40Mn2 27SiMn 50CrVA 30CrMnTi
Pinion steel	20CrMnTi 20CrMnTiH 20CrMnTiHCS/20CrMnTiHLD Q20CrMnTi-1/Q20CrMnTi-2
Sucker rod	20-35CrMoA
Free-cutting steel	GT1215S
Spring steel	60Si2MnA 65Mn
Ball bearing steel	GCr15

Chemical Composition of Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

C	Si	Mn	P	S	Cr	Ni	Cu

0.17-0.24	0.17-0.37	0.35-0.65	≤0.035	≤0.035	≤0.25	≤0.25	≤0.25

Tensile strength (σb/MPa)	Yield strength (σb/MPa)	Elongation (δ5/%)
≥410(42)	≥245(25)	≥25

Company Introduction of Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

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.

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Certificates of Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Packaging & Delivery of Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Packaging Detail	Sea worthy packing /as per customer's packing instruction
Delivery Detail	15 ~ 40 days after receiving the deposit

Products show of Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

Special Steel 8620H 40CrNiMoA Iron Steel Round Bar

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 surface coating methods used for special steel?: There are several surface coating methods that are commonly used for special steel to enhance its properties and protect it from various environmental factors. These methods include: 1. Galvanizing: This is a process in which a layer of zinc is applied to the surface of the steel. It provides excellent corrosion resistance and can be done through hot-dip galvanizing or electroplating. 2. Electroplating: In this method, a thin layer of metal such as chromium, nickel, or copper is deposited onto the steel surface through an electrochemical process. This improves the steel's appearance, wear resistance, and corrosion resistance. 3. Powder coating: Powder coating involves applying a dry powder to the steel surface, which is then heated and fused to form a protective layer. It provides excellent durability, weather resistance, and aesthetic appeal. 4. Thermal spray coating: This method involves spraying a molten or heated material onto the steel surface, which then solidifies to form a protective coating. Materials commonly used for thermal spray coating include metals, ceramics, and polymers. 5. Paint coating: Painting is a commonly used method for surface coating. Different types of paints, such as epoxy, polyurethane, or acrylic, can be applied to the steel surface to provide protection against corrosion, chemicals, and UV radiation. 6. PVD coating: Physical Vapor Deposition (PVD) is a process in which a thin film of a material, such as titanium nitride or diamond-like carbon, is deposited onto the steel surface through a vacuum deposition process. PVD coatings enhance hardness, wear resistance, and appearance. 7. Anodizing: Anodizing is primarily used for aluminum, but it can also be applied to special steel. This process involves creating an oxide layer on the steel surface through an electrochemical reaction, which improves corrosion resistance and adds a decorative finish. These surface coating methods are essential for special steel as they provide enhanced protection against corrosion, wear, and other environmental factors, thereby extending the lifespan and improving the performance of the steel. The choice of coating method depends on the specific requirements and desired properties of the steel.

Q: What are the specific requirements for special steel used in the railway wheel industry?: The specific requirements for special steel used in the railway wheel industry include high strength and durability to withstand heavy loads and constant rolling, excellent fatigue resistance to withstand repeated stress cycles, good wear resistance to minimize wear and tear, and sufficient toughness to resist fractures. The steel should also possess good heat treatment properties to ensure proper hardening and tempering for desired strength and hardness levels. Additionally, it should have low impurities and be capable of withstanding harsh operating conditions, such as extreme temperatures and corrosion, to ensure a long service life.

Q: What are the different methods of testing the quality of special steel?: To assess the quality of special steel, a range of testing methods are employed. These methods serve to verify that the steel meets the necessary standards and is suitable for its intended applications. One such method is chemical analysis, which involves scrutinizing the steel's composition to ensure it adheres to the required chemical specifications. This analysis helps determine the presence and quantity of crucial elements like carbon, manganese, chromium, nickel, and others, which play a significant role in achieving specific mechanical properties. Another testing approach is mechanical testing, which aims to evaluate the steel's strength, hardness, ductility, and other mechanical properties. Common tests include tensile testing, which measures the steel's ability to withstand tension, and hardness testing, which gauges its resistance to indentation or scratching. Non-destructive testing (NDT) methods are also utilized to assess steel quality without causing any damage. Techniques such as ultrasonic testing, magnetic particle testing, and liquid penetrant testing are employed to identify surface and internal defects, cracks, or discontinuities that could compromise the steel's integrity. Microscopic examination is employed to study the microstructure of special steel, allowing for the evaluation of grain size, inclusions, and other structural features. This analysis provides insights into the steel's properties and potential defects. Corrosion testing is carried out to ensure that special steel can withstand corrosive environments. Various tests, such as salt spray testing, electrochemical methods, and exposure to corrosive substances, are performed to assess the steel's resistance to corrosion and suitability for specific applications. To evaluate the steel's toughness and resistance to sudden loading, impact testing is conducted. This involves subjecting the steel to high-energy impacts to determine if it can withstand sudden shocks without fracturing. Heat treatment analysis is also essential for special steel, as it often undergoes heat treatment processes to enhance its properties. This analysis involves examining the microstructure and hardness of the steel after treatment to ensure it has achieved the desired properties. In conclusion, the combination of these testing methods guarantees that special steel meets the necessary quality standards, making it suitable for various applications in construction, automotive, aerospace, and industrial equipment.

Q: How does special steel perform in marine environments?: Special steel performs exceptionally well in marine environments due to its high resistance to corrosion, rust, and the harsh conditions present in seawater. It is specifically designed to withstand the corrosive effects of saltwater, making it an ideal choice for various marine applications such as shipbuilding, offshore platforms, and underwater structures. Its superior strength, durability, and anti-corrosive properties ensure long-lasting performance and minimal maintenance in marine environments.

Q: How does special steel contribute to energy efficiency?: Special steel contributes to energy efficiency in several ways. Firstly, special steel is used in the construction of energy-efficient appliances and equipment, such as refrigerators, air conditioners, and turbines. The high strength and durability of special steel allow for more efficient operation and reduced energy consumption of these devices. Additionally, special steel is utilized in the manufacturing of energy-efficient vehicles, such as hybrid and electric cars. The lightweight yet strong properties of special steel enable the production of lighter vehicles that require less energy to propel, improving fuel efficiency and reducing emissions. Overall, special steel plays a crucial role in enhancing energy efficiency across various industries, contributing to a more sustainable and environmentally friendly future.

Q: Is special steel suitable for manufacturing molds and dies?: Yes, special steel is well-suited for manufacturing molds and dies due to its exceptional hardness, durability, and resistance to wear and deformation. Special steels like tool steel or high-speed steel possess superior mechanical properties, such as high tensile strength and toughness, making them ideal for withstanding the high pressure and temperature conditions involved in mold and die manufacturing processes. Additionally, special steels can be easily machined and heat-treated to achieve the desired hardness and precision required for creating intricate molds and dies.

Q: What is the significance of vanadium in special steel?: Due to its unique properties and effects on the performance of steel, vanadium is an important element in special steel. Special steel, which is designed for specific applications requiring strength, durability, and specific characteristics, benefits greatly from the inclusion of vanadium. One of the primary rationales behind using vanadium in special steel is its ability to increase the steel's strength and toughness. Vanadium forms robust carbides within the microstructure of the steel, which prevent grain growth and enhance its resistance to deformation and cracking. This makes the steel highly suitable for applications that demand exceptional strength, such as the construction of bridges, high-rise buildings, and machinery. In addition to strength, vanadium also improves the hardenability of the steel. Hardenability refers to the steel's capacity to be hardened through heat treatment methods like quenching and tempering. Vanadium enhances the hardenability of the steel, enabling easy achievement of desired properties like increased wear resistance and improved cutting performance. This makes vanadium-containing special steel ideal for tools, dies, and other applications requiring hardness and wear resistance. Furthermore, vanadium contributes to the steel's resistance to corrosion. It creates stable oxide layers on the steel's surface, acting as a protective barrier against corrosion and oxidation. This is particularly advantageous in harsh environments like marine environments or chemical processing plants. Moreover, vanadium also enhances the heat resistance and thermal stability of special steel. It helps the steel retain its strength and hardness even at high temperatures, making it suitable for applications involving high-temperature environments like aerospace components and automotive engine parts. In summary, the importance of vanadium in special steel lies in its ability to enhance the steel's strength, toughness, hardenability, corrosion resistance, and heat resistance. These properties make vanadium-containing special steel highly sought after in various industries that require exceptional performance and reliability.

Q: What are the properties and characteristics of special steel?: Special steel encompasses a type of steel that possesses distinct attributes and qualities, rendering it suitable for particular applications that demand exceptional strength, endurance, and resilience against diverse environmental factors. The properties and characteristics of special steel encompass the following: 1. Remarkable Strength: Special steel is renowned for its extraordinary strength, enabling it to endure heavy loads and extreme circumstances. This renders it ideal for applications requiring structural integrity and durability, such as the construction, automotive, and aerospace sectors. 2. Superb Resistance to Corrosion: Special steel is frequently alloyed with elements such as chromium and nickel, augmenting its resistance to corrosion and oxidation. This characteristic makes it immensely valuable in environments where exposure to moisture, chemicals, or extreme temperatures can rapidly deteriorate conventional steel. 3. Resistance to High Temperatures: Special steel is designed to maintain its mechanical properties and structural integrity even when subjected to elevated temperatures. It demonstrates exceptional thermal stability, making it suitable for applications involving intense heat, such as power generation, the oil and gas industry, and manufacturing processes. 4. Resistance to Wear: Special steel is frequently hardened and treated to enhance its resistance to wear. This trait enables it to withstand abrasive materials, friction, and erosion, making it suitable for cutting tools, machine parts, and wear-resistant components in heavy machinery. 5. Magnetic Characteristics: Certain types of special steel exhibit magnetic properties, rendering them ideal for applications in the electrical and electronics industries. Examples include electrical transformers, motors, generators, and magnetic shielding. 6. Machinability: Special steel is designed to be easily machined, enabling it to be shaped, formed, and fabricated into various components with precision. This attribute is crucial for industries requiring the production of intricate and complex parts in an efficient manner. 7. Cost-effectiveness: Despite possessing unique properties, special steel often proves to be cost-effective compared to other materials with similar performance characteristics. Its long lifespan, resistance to corrosion and wear, and versatility make it the preferred choice for numerous applications, offering a balance between performance and cost. In summary, special steel combines exceptional strength, resistance to corrosion and wear, heat resistance, and magnetic properties, making it a versatile material utilized in diverse industries. Its distinctive properties render it an indispensable component in applications where standard steel or alternative materials would not suffice.

Q: What are the main applications of special steel in the defense vehicles?: Special steel is used in defense vehicles for various critical applications. It is particularly important in the manufacturing of armor plates, which provide protection to military vehicles against ballistic threats. Special steel is also used in the production of components like suspension systems, axles, and chassis, ensuring durability and strength in harsh conditions. Additionally, it is utilized in the construction of weapon systems, such as missile launchers and gun barrels, due to its high tensile strength and resistance to extreme temperatures. Overall, special steel plays a crucial role in enhancing the performance and survivability of defense vehicles.

Q: How does special steel contribute to the electrical resistance of products?: Special steel can contribute to the electrical resistance of products by providing a higher resistance to the flow of electric current. This is achieved by alloying the steel with specific elements that increase its resistivity, making it suitable for applications where low electrical conductivity is desired.

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