Round Bar Steel Bar EN8 EN9 Special Steel

Round Bar Steel Bar EN8 EN9 Special Steel System 1

Round Bar Steel Bar EN8 EN9 Special Steel

Ref Price:

Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Product information:

1. Grade: Q235, SAE1020, SAE1040,SAE1045, 20Cr/SAE5120, 40Cr/SAE5140,

SCM440/SAE4140/42CrMo, SS400

2. Size: 8mm--100mm

3. Shape: flat bar, round bar, hexagonal bar, square bar, and so on.

4. Payment Terms: T/T, L/C.

5. MOQ: 5MT

6. Delivery terms: FOB or CIF

7. Shipment time: 35days or according to the qty.

8. Advantages: fast delivery, full-size, large inventories and accurate precision.

Chemical Composition:

STEEL GRADE	Similar Brand			Chemical Composition(%)
GB	AISI SAE	JIS	DIN	C	Si	Mn	Cr	Mo	Ni(≤)	P(≤)	S(≤)
20	1020	S20C	CK22	0.17-0.24	0.17-0.37	0.35-0.65	0.25	/	0.25	0.035	0.035
45	1045	S45C	CK45	0.42-0.50	0.17-0.37	0.50-0.80	0.25	/	0.25	0.035	0.035
15CrMo	4115	SCM415	15CrMo5	0.12-0.18	0.17-0.37	0.40-0.70	0.80-1.10	0.40-0.55	0.30	0.035	0.035
30CrMo	4130	SCM430	25CrMo4	0.26-0.34	0.17-0.37	0.40-0.70	0.80-1.10	0.15-0.25	0.030	0.035	0.035
42CrMo	4140	SCM440	42CrMo4	0.38-0.45	0.17-0.37	0.50-0.80	0.90-1.20	0.15-0.25	0.030	0.035	0.035

Product show

.jpg

Workshop show

Round Bar Steel Bar EN8 EN9 Special Steel

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q: What is the hardness range of special steel?: The hardness range of special steel can vary depending on the specific type and composition, but it typically falls within the range of 50 to 65 HRC (Rockwell Hardness Scale).

Q: How is special steel heat treated?: Special steel is heat treated through a process known as quenching and tempering. Initially, the steel is heated to a specific temperature and then rapidly cooled by quenching in a liquid medium such as oil or water. This rapid cooling helps to harden the steel. Subsequently, the steel is reheated to a lower temperature and held there for a certain period of time to relieve internal stress and improve toughness. This two-step process of quenching and tempering enhances the strength, hardness, and durability of special steel for various applications.

Q: What are the specific requirements for special steel used in the oil and gas sector?: The primary focus of special steel requirements in the oil and gas sector lies in its ability to withstand harsh and demanding environments. Several key requirements include: 1. Corrosion Resistance: To ensure equipment longevity and reliability in corrosive environments caused by factors like moisture, chemicals, and high temperatures, special steel must exhibit excellent corrosion resistance. 2. High Strength: Special steel must possess high strength and toughness to endure extreme pressure, stress, and load conditions in oil and gas operations. This is crucial for maintaining the structural integrity of pipelines, offshore platforms, and drilling components. 3. Low Temperature Resistance: For oil and gas operations in extremely cold conditions, such as deep-sea exploration or Arctic regions, special steel must exhibit good low-temperature toughness to prevent brittle fracture and maintain mechanical properties. 4. Weldability: To facilitate ease of fabrication and construction, special steel should have good weldability in the oil and gas sector. This is vital for joining various components and pipelines, ensuring structural integrity and minimizing failure risk. 5. Hydrogen-Induced Cracking (HIC) Resistance: Special steel must resist hydrogen-induced cracking, which can occur in the presence of hydrogen sulfide gas commonly found in oil and gas environments. HIC can lead to catastrophic failures, making it essential for the steel to be designed to prevent this phenomenon. 6. Sour Service Resistance: In certain oil and gas fields, where corrosive gases like hydrogen sulfide are present, special steel must withstand sour service conditions. This requires high resistance to sulfide stress cracking and good mechanical properties under harsh conditions. 7. Compliance with Industry Standards: Special steel used in the oil and gas sector must meet industry-specific standards and specifications, such as those set by the American Petroleum Institute (API). This ensures quality, reliability, and safety. Overall, the requirements for special steel in the oil and gas sector aim to achieve durability, reliability, and safety in challenging operating environments. While specific applications may have varying requirements, these criteria are crucial for the smooth and efficient functioning of oil and gas operations.

Q: What are the specific requirements for special steel used in the marine propeller industry?: The special steel used in the marine propeller industry must meet specific requirements to ensure optimal performance and durability in harsh marine environments. Some of the key requirements include: 1. Corrosion Resistance: Marine propellers are constantly exposed to saltwater, which can cause corrosion. Therefore, special steel used in the marine propeller industry must have high resistance to corrosion, preventing the formation of rust and maintaining the propeller's integrity over time. 2. Strength and Toughness: Marine propellers are subjected to high mechanical stresses and impacts, especially in rough sea conditions. The special steel used must possess high strength and toughness to withstand these forces without deformation or failure. 3. Fatigue Resistance: Propellers experience cyclic loading due to rotational forces, which can lead to fatigue failure over time. The special steel should have excellent fatigue resistance to withstand millions of load cycles without developing cracks or fractures. 4. Weldability: Propellers are often manufactured in segments and then welded together. The special steel used must be easily weldable, ensuring strong and reliable joints that can withstand the propeller's operational stresses. 5. Heat Resistance: Propellers generate significant heat due to friction and propulsion forces. The special steel should have good heat resistance to prevent deformation or loss of mechanical properties at elevated temperatures. 6. Machinability: Special steel used in the marine propeller industry should be readily machinable to allow for precise shaping and finishing of complex propeller blade designs. 7. Non-Magnetic Properties: Many modern ships utilize magnetic navigation systems and sensors. Therefore, the special steel used in propellers should have low magnetic permeability to minimize interference with these systems. Meeting these specific requirements ensures that the special steel used in the marine propeller industry can withstand the challenging conditions of seawater, provide efficient propulsion, and maintain its structural integrity throughout the propeller's lifespan.

Q: Can special steel be used in the railway industry?: Yes, special steel can be used in the railway industry. Special steel, such as high-strength steel or corrosion-resistant steel, can be utilized for various applications in the railway industry, including the construction of tracks, bridges, and locomotives. These types of steel offer enhanced durability, strength, and resistance to wear and tear, making them suitable for the demanding conditions and heavy loads encountered in the railway sector.

Q: What are the requirements for special steel used in high-pressure applications?: Special steel used in high-pressure applications must meet certain requirements in order to ensure its durability and reliability under extreme conditions. Some of the key requirements for this type of steel include: 1. High strength: Special steel for high-pressure applications needs to have exceptional strength to withstand the intense forces and pressures it will be subjected to. This allows it to resist deformation and maintain its structural integrity. 2. Excellent corrosion resistance: The steel must have a high resistance to corrosion, as it will often come into contact with aggressive fluids or gases in high-pressure environments. This prevents the steel from deteriorating over time and helps to maintain its performance and longevity. 3. Good weldability: Special steel used in high-pressure applications should possess good weldability to enable easy and efficient joining of different components. This ensures the overall integrity and reliability of the system. 4. High temperature resistance: The steel must have the ability to withstand elevated temperatures without losing its mechanical properties. This is particularly important in applications where high-pressure fluids or gases are heated or where the steel is exposed to extreme heat sources. 5. Fatigue resistance: Special steel should have a high resistance to fatigue failure, as it will often be subjected to cyclic loading and pressure fluctuations. This allows the steel to withstand repeated stress and pressure cycles without developing cracks or failures. 6. Tight dimensional tolerance: The steel should have tight dimensional tolerance to ensure proper fit and functionality within the high-pressure system. This helps to minimize leakage or any potential weak points in the system. 7. Compliance with industry standards: Special steel used in high-pressure applications should meet relevant industry standards and specifications, such as those set by organizations like the American Society of Mechanical Engineers (ASME) or the American Petroleum Institute (API). This ensures that the steel meets the required quality and performance standards. Overall, special steel for high-pressure applications needs to possess a combination of high strength, excellent corrosion resistance, good weldability, high temperature resistance, fatigue resistance, tight dimensional tolerance, and compliance with industry standards to ensure its suitability and reliability in demanding environments.

Q: How long does special steel last compared to regular steel?: Special steel generally lasts longer than regular steel due to its superior properties and enhanced durability.

Q: How does special steel contribute to the power transmission sector?: The power transmission sector relies heavily on special steel due to its exceptional properties and performance characteristics. Special steel is highly valued for its strength and resilience, making it an ideal material for manufacturing various components of power transmission systems. For example, transmission towers require special steel for their stability and durability, even in extreme weather conditions. Additionally, special steel's resistance to corrosion is particularly advantageous in the power transmission sector. Power transmission equipment often faces harsh environments, such as high humidity, chemical pollutants, and saltwater exposure, which can speed up corrosion. By using special steel in the manufacturing process, the risk of corrosion-related failures is significantly reduced, ensuring a reliable and uninterrupted power transmission. Furthermore, special steel's excellent electrical conductivity makes it a perfect choice for conductors and cables used in power transmission. Efficient transfer of electrical energy is crucial to minimize power losses and optimize the transmission process. Special steel conductors offer low resistance to the flow of electricity, enabling efficient power transmission over long distances. Moreover, special steel is also employed in the production of transformers and other electrical equipment used in power transmission. The magnetic properties of special steel make it an excellent material for transformer cores, facilitating efficient energy conversion and minimizing energy losses during transmission. In summary, special steel greatly contributes to the power transmission sector by providing strength, corrosion resistance, electrical conductivity, and magnetic properties. These properties ensure the reliability, efficiency, and longevity of power transmission systems, ultimately supporting the uninterrupted supply of electricity to industries, businesses, and households.

Q: How does special steel contribute to reducing product downtime due to repairs?: Special steel contributes to reducing product downtime due to repairs by offering increased strength, durability, and resistance to wear and tear. With its unique properties, special steel can withstand harsh conditions and heavy usage, resulting in longer-lasting and more reliable products. This reduces the frequency and duration of repairs, minimizing the downtime experienced by the product and ultimately leading to increased productivity and efficiency.

Q: How does special steel contribute to the agricultural machinery industry?: Special steel plays a crucial role in the agricultural machinery industry by contributing to the overall efficiency, durability, and productivity of agricultural machinery. One of the key advantages of special steel in this industry is its exceptional strength and toughness, which allows for the manufacturing of robust and reliable equipment. Agricultural machinery, such as tractors, combines, and harvesters, are subjected to intense operational conditions, including heavy loads, extreme temperatures, and exposure to corrosive elements. Special steel provides the necessary strength and resistance to withstand these challenging environments, ensuring that the machinery can perform optimally for extended periods. Moreover, special steel alloys offer excellent wear resistance, enabling agricultural machinery to withstand the abrasive nature of farming operations. This is particularly important for components like blades, plows, and tillage tools, which are constantly exposed to soil, rocks, and other abrasive materials. By using high-quality special steel, manufacturers can produce durable and long-lasting equipment, minimizing maintenance needs and enhancing the overall reliability of agricultural machinery. Special steel also allows for the design and construction of more efficient agricultural machinery. Due to its superior strength-to-weight ratio, special steel enables the production of lighter yet sturdy equipment. This, in turn, improves fuel efficiency, reduces energy consumption, and enhances maneuverability. Additionally, special steel's excellent machinability and formability enable manufacturers to create complex and customized components, meeting specific agricultural needs and increasing the overall efficiency of machinery. Furthermore, special steel contributes to the agricultural machinery industry by providing resistance to corrosion and rust. Agricultural equipment is often exposed to moisture, fertilizers, and chemicals, which can lead to corrosion and degradation over time. Special steel alloys with corrosion-resistant properties, such as stainless steel, can significantly extend the lifespan of machinery and reduce maintenance costs. In summary, special steel is vital for the agricultural machinery industry as it enhances the durability, efficiency, and productivity of the equipment. Its strength, wear resistance, design flexibility, and corrosion-resistant properties make it the preferred choice for manufacturing high-quality machinery that can withstand the demanding conditions of agricultural operations.

Send your message to us

*Email

*TEL

*Quantity

*Unit