Special Steel 42CrMo Round Bar Steel SCM440

Special Steel 42CrMo Round Bar Steel SCM440 System 1

Special Steel 42CrMo Round Bar Steel SCM440

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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1.Specification
Round bar	Diameter(mm)	Length (mm)
20~600	3000~9000
Plate	Thickness(mm)	Width (mm)	Length (mm)
Max:800	Max:2200	Max:9000
*Specification can be customized for sure.
2.Chemical Compositons
Grade	C	Si	Mn	P	S	Cr	Mo	Ni
SCM440	0.38~0.45	0.17~0.37	0.50~0.8	≤0.035	≤0.035	0.9~1.2	0.15-0.25	≤0.3
4140	0.40~0.45	0.15~0.35	0.75~1.0	≤0.035	≤0.040	0.8~1.1	0.15-0.25	-
SCM415	0.38~0.43	0.15~0.35	0.60~0.9	≤0.030	≤0.030	0.9~1.2	0.15-0.30	≤0.25
1.7225	0.38~0.45	≤0.40	0.60~0.9	≤0.025	≤0.035	0.9~1.2	0.15-0.30
3.Delivery Conditions
Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)
4.Typical Applications
a.Statically and dynamically stressed components for vehicles
b.Parts of larger cross-sections, crankshafts, gears
c.Gears, stem assemblies,
d.Pump shafts and tool holders

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Special Steel 42CrMo Round Bar Steel SCM440

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 special steel contribute to the automotive suspension spring industry?: Special steel plays a crucial role in the automotive suspension spring industry by providing enhanced performance and durability to the springs used in vehicles. Suspension springs are responsible for supporting the weight of the vehicle and absorbing road shocks, ensuring a comfortable and smooth ride for passengers. Special steel, also known as alloy steel, is specifically designed to possess exceptional mechanical properties, such as high strength, toughness, and resistance to wear and fatigue. These properties are essential for suspension springs, as they need to withstand the constant stresses and strains experienced during vehicle operation. The use of special steel in automotive suspension springs allows for the production of springs that are lighter in weight, yet stronger and more reliable compared to traditional steel springs. This results in improved fuel efficiency and reduced vehicle weight, contributing to lower emissions and a more sustainable automotive industry. Furthermore, special steel enables suspension springs to maintain their shape and performance over an extended period, even under extreme conditions. This ensures that the vehicle's suspension system remains effective, providing a comfortable and stable driving experience. In addition, special steel can be tailored to meet specific requirements of different vehicles, allowing for the customization of suspension springs based on factors such as vehicle weight, load capacity, and desired ride quality. This flexibility in material properties enhances the overall performance and safety of the suspension system. Overall, special steel plays a vital role in the automotive suspension spring industry by providing the necessary strength, durability, and performance characteristics required for a reliable and efficient suspension system. Its use contributes to the development of lighter, more fuel-efficient vehicles, while ensuring passenger comfort and safety.

Q: What are the different types of electrical steel?: There are primarily two types of electrical steel: grain-oriented electrical steel (GOES) and non-grain-oriented electrical steel (NGOES). GOES is specifically designed to have superior magnetic properties in a specific direction, making it ideal for power transformers and other high-efficiency electrical devices. On the other hand, NGOES does not have a preferred magnetic direction and is commonly used in motors, generators, and other general-purpose electrical equipment.

Q: What are the properties of wear-resistant stainless steel?: Wear-resistant stainless steel possesses several key properties that make it a highly durable and reliable material. Firstly, it has a high hardness level, which helps it withstand abrasion and wear caused by friction. Secondly, it exhibits excellent corrosion resistance, protecting it from rust and other forms of degradation. Additionally, wear-resistant stainless steel has a high tensile strength, allowing it to withstand heavy loads and impacts without deforming or breaking. Lastly, it maintains its properties at elevated temperatures, making it suitable for use in high-temperature environments. Overall, these properties make wear-resistant stainless steel an ideal choice for applications that require strength, durability, and resistance to wear and corrosion.

Q: What are the different grades of special steel?: Special steel is classified into various grades based on its chemical composition, physical properties, and intended use. Some common grades include tool steel, stainless steel, alloy steel, and high-speed steel. These grades offer unique characteristics and are utilized in different industries such as manufacturing, construction, automotive, and aerospace.

Q: Can special steel be used in the mining industry?: Yes, special steel can be used in the mining industry. Special steel, such as high-strength and wear-resistant steels, can be utilized for various applications in the mining industry, including the manufacturing of heavy machinery, equipment, and tools used in mining operations. These steels offer superior durability, strength, and resistance to abrasion, making them suitable for the harsh and demanding conditions present in mining environments.

Q: What are the different cryogenic grades of special steel?: Specifically designed for use in extremely low temperature environments, there are several cryogenic grades of special steel available. These grades have been developed to retain their mechanical properties and prevent brittleness at cryogenic temperatures, making them ideal for applications such as LNG storage tanks, aerospace equipment, and low-temperature chemical processes. Among the commonly used cryogenic grades is the 300 series stainless steel, particularly types 304 and 316. These stainless steels contain nickel, which enhances their cryogenic toughness and ability to withstand thermal stress. Consequently, they are frequently employed in the construction of cryogenic storage vessels and piping systems. Another popular cryogenic grade is the 9% nickel steel, which is alloyed with approximately 9% nickel. This alloy provides excellent low-temperature toughness and ductility. As a result, it is often chosen for constructing LNG storage tanks, capable of withstanding the extremely cold temperatures required for the storage and transportation of liquefied natural gas. In addition, there are special low-temperature carbon steels, such as ASTM A350 LF2 and ASTM A333 Grade 6, which are engineered to maintain their toughness and impact resistance at cryogenic temperatures. These steels find extensive use in low-temperature applications, including cryogenic piping systems and equipment for the oil and gas industry. In conclusion, the various cryogenic grades of special steel encompass stainless steels (such as the 300 series stainless steel), 9% nickel steel, and low-temperature carbon steels (like ASTM A350 LF2 and ASTM A333 Grade 6). Each grade has been specifically designed to endure the challenges presented by extremely low temperatures while retaining their mechanical properties and resistance to brittleness.

Q: How does special steel contribute to the construction of bridges?: The utilization of special steel is of utmost importance in the construction of bridges as it provides enhanced strength, durability, and resilience, thereby guaranteeing the structural integrity and safety of these vital infrastructure projects. One of the main advantages of special steel in bridge construction lies in its high tensile strength, allowing it to endure heavy loads and extreme weather conditions. This strength is particularly crucial in large-span bridges, where the steel must bear significant weight and withstand forces like wind, earthquakes, and traffic vibrations. Additionally, special steel offers exceptional corrosion resistance, which is essential for bridges exposed to harsh environments, such as those in close proximity to coastal areas where saltwater can be highly corrosive. By preventing or minimizing corrosion, the lifespan of the bridge is significantly prolonged, resulting in reduced maintenance and repair costs. Furthermore, special steel can be fabricated to precise specifications, allowing for the creation of intricate bridge designs and innovative structural solutions. This flexibility enables engineers to design bridges that are not only functional but also visually appealing. In conclusion, special steel is a vital element in bridge construction due to its strength, durability, corrosion resistance, and adaptability. Its utilization ensures the longevity, safety, and efficiency of bridges, ultimately benefiting the communities they serve.

Q: How does special steel perform in high-stress corrosion cracking environments?: Special steel is specifically designed to perform well in high-stress corrosion cracking environments. This type of steel is highly resistant to corrosion and can withstand the combination of stress and corrosive elements present in these environments. Its unique composition and manufacturing process make it more durable and less prone to cracking, ensuring its reliable performance in such challenging conditions.

Q: How does special steel contribute to the aerospace racing aftermarket industry?: Special steel plays a significant role in enhancing the performance, durability, and safety of aircraft and racing vehicles within the aerospace racing aftermarket industry. Its importance cannot be overstated. To start with, critical engine components like turbine blades, compressor discs, and shafts are manufactured using special steel. These components must withstand extreme temperatures, pressures, and mechanical stress during operation. Nickel-based superalloys, which are a type of special steel alloy, provide excellent heat resistance, high strength, and exceptional corrosion resistance. This ensures that the engine systems perform at their best and are reliable. Additionally, special steel is essential in constructing airframe structures. Titanium alloys, which are lightweight yet possess high-strength properties, are crucial in reducing the overall weight of aircraft and racing vehicles. This reduction in weight leads to improved fuel efficiency, increased speed, and better handling capabilities. Therefore, special steel is an indispensable material in the aerospace racing aftermarket. Furthermore, special steel is utilized in the production of landing gear systems, which are vital for safe takeoffs, landings, and overall maneuverability. The landing gear must endure immense forces and shock loads during these operations. Special steel alloys such as chromium-molybdenum steel offer exceptional toughness, fatigue resistance, and impact strength. This ensures the landing gear's reliability and longevity. Moreover, special steel plays a crucial role in manufacturing aerospace racing aftermarket components like fasteners, bearings, and gears. These components require high strength, wear resistance, and dimensional stability to withstand the demanding conditions of racing and provide optimal performance. Special steel alloys like stainless steel and tool steel possess these desirable properties, ensuring the longevity and reliability of these crucial components. To sum up, special steel's exceptional properties, including high strength, heat resistance, corrosion resistance, and fatigue resistance, enable the production of reliable, efficient, and high-performance aircraft and racing vehicles within the aerospace racing aftermarket industry. Without special steel, the industry would be unable to achieve the level of advanced technology, speed, and safety that it currently enjoys.

Q: What are the common alloys used in special steel?: Some common alloys used in special steel include stainless steel, tool steel, and high-speed steel.

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