Special Steel SCM420H Steel Bar Structural Steel

Special Steel SCM420H Steel Bar Structural Steel System 1

Special Steel SCM420H Steel Bar Structural 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 Standards and Chemical Composition:

GB	DIN	JIS	BS
20CrMo	25CrMo4	SCM420	25CrMo4

C	Si	Mn	P	S	Cr	Ni	Cu
0.17-0.23	0.15-0.35	0.55-0.90	0.030	0.030	0.85-1.25	0.30	0.30

2 Mechanical Property:

Yield Strength (MPa)	≥685
Tensile Strength (MPa)	≥885
Elongation (%)	≥12
Hardness (HB)	≤197
Reduction in Area (%)	≥50
AKV (J)	≥78

3 Brief Introduction:

Dimension	14-350mm
Length	2-13m or as per your request
Delivery condition	Hot rolled
Heat Treatment	Normalizing, Annealing, Quenching
Packing	Standard seaworthy packing or according to your requirements

Product Show

Special Steel SCM420H Steel Bar Structural Steel

Workshop Show

Special Steel SCM420H Steel Bar Structural 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: How does stainless steel contribute to the construction industry?: Stainless steel contributes to the construction industry by providing durability, corrosion resistance, and aesthetic appeal. It is widely used in structural applications, such as building facades, bridges, and roofing, as it can withstand harsh weather conditions and maintain its strength over time. Stainless steel's resistance to corrosion also makes it a suitable choice for plumbing, electrical, and HVAC systems, ensuring longevity and minimizing maintenance. Additionally, its sleek and modern appearance enhances the overall aesthetics of architectural designs.

Q: How does special steel perform in high-impact applications?: Special steel has been specifically designed to excel in high-impact applications, showcasing unique properties that allow it to withstand extreme forces and impacts without deforming or breaking. Notably, one of the standout features of special steel is its exceptional strength and hardness, enabling it to effectively absorb and distribute impact forces. Consequently, this prevents the material from shattering or deforming under heavy loads, rendering it highly suitable for applications such as construction machinery, automotive parts, and industrial equipment. Furthermore, special steel exhibits outstanding toughness, enabling it to resist cracking or fracturing when subjected to sudden and intense impacts. This quality proves crucial in high-impact applications where the material must endure repeated forces without failure. The toughness of special steel is achieved through meticulous alloying and heat treatment processes, which significantly enhance its energy absorption capacity and fracture resistance. Moreover, special steel often possesses superior properties such as wear resistance, corrosion resistance, and heat resistance, all of which contribute to its overall performance in high-impact applications. These heightened characteristics allow the material to maintain its integrity and functionality even when exposed to harsh environments or extreme temperatures. In conclusion, special steel showcases exceptional performance in high-impact applications as a result of its remarkable strength, toughness, wear resistance, corrosion resistance, and heat resistance. These properties establish it as a reliable and durable choice for industries requiring materials capable of withstanding intense forces and impacts.

Q: How is special steel used in the production of conveyor belts?: Special steel is used in the production of conveyor belts primarily for their strength and durability. It is commonly used in the construction of belt pulleys and rollers, which are essential components of conveyor systems. The special steel used in these parts ensures that they can withstand heavy loads, resist wear and tear, and maintain their shape and functionality over long periods of use.

Q: How does special steel contribute to the aerospace safety?: Special steel contributes to aerospace safety in several ways. Firstly, special steel is used in the construction of aircraft components such as landing gear, engine parts, and structural supports. These components need to withstand extreme stress, high temperatures, and corrosive environments, and special steel provides the necessary strength, durability, and resistance to ensure the safety and reliability of the aircraft. Secondly, special steel is utilized in the manufacturing of aerospace tools and equipment. These tools are essential for maintenance, repairs, and inspections of aircraft systems. The high strength and toughness of special steel ensure that these tools can withstand heavy use, enabling efficient and accurate maintenance procedures, ultimately contributing to the overall safety of aerospace operations. Furthermore, special steel is also used in the production of safety-critical fasteners and connectors in aerospace applications. These fasteners play a crucial role in holding aircraft components together, and their reliability is paramount for the safe operation of the aircraft. Special steel's excellent mechanical properties, including high tensile strength and resistance to fatigue, ensure the integrity and security of these fasteners, reducing the risk of component failure and enhancing aerospace safety. Overall, the use of special steel in aerospace applications significantly contributes to safety by providing the necessary strength, durability, and reliability required in critical aircraft components, tools, and fasteners.

Q: How does special steel perform in erosion applications?: Special steel is renowned for its extraordinary performance in erosion applications, owing to its distinctive attributes such as elevated hardness, resistance to corrosion, and wear resistance, which render it exceptionally well-suited for environments where erosion is a prevalent concern. Erosion, which entails the gradual deterioration of a material due to external forces like abrasion, impact, or cavitation, can pose significant challenges in industries like mining, oil and gas, and chemical processing. In such cases, regular steel may prove inadequate in withstanding the harsh conditions and may rapidly succumb to degradation. Conversely, special steel is purposefully designed to endure erosive forces and maintain its structural integrity over an extended lifespan. Its high hardness empowers it to withstand abrasion and impede rapid material degradation, thus making it an ideal choice for applications involving the movement of abrasive materials or fluids. Moreover, special steel exhibits exceptional corrosion resistance, a vital characteristic in erosive environments. It can effectively withstand the corrosive impact of chemicals, moisture, and other harsh substances, thereby guaranteeing the material's durability and performance. Additionally, special steel offers exceptional wear resistance, which enables it to endure repeated impacts, high pressures, and sliding contact without experiencing significant damage. This quality makes it remarkably effective in erosion-prone applications, consequently minimizing downtime and maintenance expenses associated with material replacement or repair. In conclusion, the properties of special steel establish it as a dependable and long-lasting option for erosion applications. Its capacity to withstand abrasion, corrosion, and wear ensures that it can thrive in demanding conditions often encountered in such environments, ultimately delivering enduring performance and diminishing the necessity for frequent replacements.

Q: How is corrosion-resistant alloy steel used in the production of chemical processing equipment?: Corrosion-resistant alloy steel is used in the production of chemical processing equipment due to its ability to withstand the corrosive environments and harsh chemicals involved in the process. This type of steel helps prevent corrosion and ensures the longevity and reliability of the equipment, making it suitable for various applications such as reactors, vessels, pipes, and pumps in chemical processing plants.

Q: What are the common challenges in welding special steel?: Some common challenges in welding special steel include controlling heat input, preventing distortion and cracking, ensuring proper fusion, and managing the formation of undesirable microstructures. Special steels often have specific alloy compositions and properties that make them more sensitive to heat and more prone to cracking. Therefore, precise control of welding parameters, preheating, and post-weld heat treatment are crucial to overcome these challenges and achieve high-quality welds in special steel.

Q: How does hot rolling affect the microstructure of special steel?: Hot rolling, a metalworking process, involves heating steel above its recrystallization temperature and passing it through rollers to reduce thickness. This process significantly affects the microstructure of special steel. When steel is hot rolled, the high temperature prompts the grains to recrystallize, eliminating defects and creating a more uniform and refined grain structure. This leads to smaller, equiaxed grains, which enhance the steel's mechanical properties. Furthermore, hot rolling encourages the formation of microstructural features like dislocation cells and subgrains. These features increase the steel's strength and toughness, making it suitable for applications requiring high performance and durability. Moreover, hot rolling can cause certain alloying elements to precipitate within the steel. These precipitates play a crucial role in enhancing specific properties such as corrosion resistance or high-temperature strength. Overall, hot rolling profoundly impacts the microstructure of special steel. It refines the grain structure, promotes beneficial microstructural features, and facilitates the precipitation of alloying elements. These changes contribute to improved mechanical properties and performance, making hot rolled steel a preferred choice in industries like automotive, aerospace, and construction.

Q: How does special steel contribute to the manufacturing of springs for automotive applications?: Special steel is crucial for the manufacturing of springs in automotive applications because it offers high strength, durability, and excellent fatigue resistance. It allows springs to withstand heavy loads, vibrations, and extreme temperatures while maintaining their shape and performance over time. Special steel also provides flexibility in design, allowing for the production of springs with specific characteristics such as improved stability, reduced weight, and enhanced energy absorption. Overall, the use of special steel in spring manufacturing ensures reliable and efficient performance in automotive applications.

Q: What are the different methods for improving the heat resistance of special steel?: There are various techniques available to enhance the heat resistance of special steel. These techniques comprise: 1. Alloying: Enhancing the heat resistance of steel can be achieved by alloying it with specific elements. The addition of chromium, nickel, or molybdenum, for instance, significantly augments the steel's ability to withstand high temperatures. 2. Heat treatment: Heat treatment processes like annealing, quenching, and tempering can be employed to enhance the heat resistance of special steel. These processes refine the steel's microstructure and enhance its mechanical properties, including heat resistance. 3. Surface modification: The heat resistance of special steel can be improved by applying specialized coatings or surface treatments. Processes such as nitriding, carburizing, or ceramic coating create a protective layer on the steel's surface, preventing oxidation and enhancing its ability to withstand high temperatures. 4. Grain refinement: Heat resistance can be improved by controlling the grain size of the steel through processes like grain refinement or recrystallization. Smaller grain sizes reduce the diffusion of atoms within the material, making it more resistant to high temperatures. 5. Precipitation hardening: Precipitation hardening involves the formation of small particles within the steel matrix, strengthening the material and improving its resistance to heat. This technique requires a specific heat treatment process to enable the formation of these particles. 6. Controlled cooling: Optimizing the cooling process after heat treatment can also enhance the heat resistance of special steel. By controlling the cooling rate, the formation of unwanted phases or microstructural defects can be minimized, ensuring better heat resistance. 7. Material selection: Selecting the appropriate type of special steel with inherent high heat resistance properties is another method to improve heat resistance. Stainless steel, tool steel, or superalloys, for instance, are renowned for their excellent heat resistance and are often chosen for applications involving high temperatures. It is important to note that the choice of the suitable method or combination of methods for enhancing heat resistance depends on the specific requirements and limitations of the application.

Send your message to us

*Email

*TEL

*Quantity

*Unit