Special Steel Forged Steel 709M40 Round Steel Bar

Special Steel Forged Steel 709M40 Round Steel Bar System 1

Special Steel Forged Steel 709M40 Round Steel Bar

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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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Product Information

1 Chemical Composition:

C	Si	Mn	P	S	Cr	Mo
0.36-0.44	0.10-0.35	0.70-1.00	≤0.035	≤0.04	0.90-1.50	0.20-0.35

2 Brief Introduction:

Dimension	13-350mm
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

3 Mechanical Property:

Yield Strength (MPa)	≥417.1
Tensile Strength (MPa)	≥655.0
Elongation (%)	≥25.7
Hardness (HB)	≤197
Reduction in Area (%)	≥56.9
AKV (J)	≥54.5

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Special Steel Forged Steel 709M40 Round Steel Bar

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Special Steel Forged Steel 709M40 Round Steel Bar

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 are the different electroplating techniques used for special steel?: There are several electroplating techniques used for special steel, including electroless nickel plating, zinc plating, and chromium plating. Each technique offers unique benefits and properties that are tailored to the specific requirements of the special steel being plated.

Q: Can special steel be cast?: Yes, special steel can be cast.

Q: How does special steel contribute to the impact resistance of products?: Special steel contributes to the impact resistance of products by providing superior strength, toughness, and durability. Its unique composition and manufacturing processes enhance its ability to withstand high impact forces without deforming or breaking. This makes it a valuable material for applications where products need to withstand heavy loads, vibrations, or collisions, ensuring their longevity and reliability.

Q: How does special steel perform in extreme temperature conditions?: Special steel is designed to perform exceptionally well in extreme temperature conditions. It has a high tolerance for both low and high temperatures, allowing it to maintain its structural integrity and mechanical properties even in the harshest environments. This makes special steel an ideal choice for applications that involve extreme heat or cold, such as aerospace, energy production, and industrial processes.

Q: How does special steel contribute to the power generation machinery industry?: Special steel plays a crucial role in the power generation machinery industry by contributing to the efficiency, reliability, and durability of power generation equipment. Firstly, special steel possesses exceptional mechanical properties, such as high strength, toughness, and temperature resistance. These properties make it ideal for manufacturing key components of power generation machinery, such as turbines, generators, and boilers. The superior strength and toughness of special steel enable these components to withstand high pressures, extreme temperatures, and harsh operating conditions, ensuring the safe and efficient operation of power plants. Moreover, special steel alloys can be specifically designed to resist corrosion, erosion, and wear, which are common challenges faced by power generation equipment. Corrosion can be caused by the chemical reactions between metals and the environment, while erosion and wear result from the high-speed flow of steam, water, or gases. By utilizing corrosion-resistant and wear-resistant special steel, power generation machinery can operate for longer periods without significant degradation, reducing maintenance requirements and downtime. Another significant contribution of special steel to the power generation machinery industry is its ability to retain magnetic properties at elevated temperatures. This property is crucial for electrical generators, as it ensures optimal performance and efficiency. Special steel with excellent magnetic properties enables generators to produce electricity with minimal energy losses due to heat, resulting in higher power output and reduced energy consumption. Furthermore, the design flexibility of special steel allows for the production of customized components, tailored to the specific requirements of different power generation technologies. For instance, in nuclear power plants, special steel alloys with high resistance to radiation and neutron embrittlement are used for the construction of reactor pressure vessels and other critical components. In renewable energy systems like wind turbines, special steel with superior fatigue resistance is utilized to withstand the cyclic loading experienced by turbine blades. In summary, special steel significantly contributes to the power generation machinery industry by enhancing the efficiency, reliability, and durability of power generation equipment. Its exceptional mechanical properties, corrosion resistance, wear resistance, magnetic properties, and design flexibility make it indispensable for manufacturing components that can withstand extreme conditions and ensure the continuous and efficient generation of electricity.

Q: What are the different methods of joining special steel?: There are various techniques available for joining special steel, each presenting its own advantages and limitations. Some of the most frequently employed methods comprise: 1. Welding: The most prevalent technique for joining steel involves melting the base material and incorporating a filler material to establish a robust connection. Depending on the specific requirements, different welding techniques like arc welding, gas welding, and laser welding can be utilized. 2. Brazing: This approach necessitates heating the steel and melting a filler metal with a lower melting point, which then infiltrates the joint through capillary action. Brazing is commonly employed when joining dissimilar metals or when a lower-temperature joining process is indispensable. 3. Soldering: Similar to brazing, soldering also employs a filler material with a lower melting point to join the steel. However, soldering involves melting the filler material without melting the base material. It is often employed for electrical connections and delicate applications. 4. Mechanical fastening: This method entails utilizing mechanical means such as bolts, screws, rivets, or other types of fasteners to join the steel components. Mechanical fastening is frequently favored in situations where disassembly or maintenance is necessary. 5. Adhesive bonding: Special steel can also be joined using adhesives that establish a sturdy bond between the surfaces. Adhesive bonding is suitable for joining intricate shapes, minimizing stress concentrations, and providing exceptional corrosion resistance. 6. Friction welding: This technique involves the application of pressure to rub or spin two steel components together, generating heat that creates a bond. Friction welding is commonly employed for joining high-strength or heat-treated steels. 7. Explosive welding: This method employs explosives to facilitate a high-speed collision between two steel surfaces, resulting in a bond formed in a solid state. Explosive welding is frequently used for joining dissimilar metals or when high strength and corrosion resistance are required. The selection of the appropriate joining method depends on factors such as the type of steel, the desired strength and durability of the joint, the specific application requirements, and the availability of equipment and expertise.

Q: How does special steel perform in cryogenic creep resistance?: Special steel is known for its exceptional performance in cryogenic creep resistance. Cryogenic creep refers to the deformation that occurs in materials under constant stress at extremely low temperatures. Special steel, due to its unique composition and manufacturing processes, exhibits superior resistance to this type of deformation compared to other materials. The low temperature environment encountered in cryogenic applications can cause conventional materials to lose their strength and become more susceptible to creep deformation. However, special steel is specifically designed to withstand these challenging conditions. Its composition typically includes a higher proportion of alloying elements such as nickel, chromium, and molybdenum, which enhance its mechanical properties and improve its resistance to creep at cryogenic temperatures. Furthermore, special steel undergoes rigorous heat treatment and processing techniques to optimize its microstructure and strengthen its grain boundaries. This results in a material with improved strength, toughness, and resistance to creep deformation, even at extremely low temperatures. The exceptional performance of special steel in cryogenic creep resistance makes it highly suitable for applications that involve storage, transportation, or processing of materials at cryogenic temperatures. Industries such as aerospace, energy, and scientific research heavily rely on special steel for the construction of cryogenic storage tanks, superconducting magnets, and cryogenic valves, among others. In conclusion, special steel exhibits remarkable performance in cryogenic creep resistance due to its unique composition, heat treatment, and processing techniques. Its ability to maintain its mechanical properties and resist deformation at extremely low temperatures makes it an ideal choice for various cryogenic applications.

Q: What are the limitations of using special steel in electrical applications?: There are several limitations to using special steel in electrical applications. Firstly, special steel can be more expensive compared to other materials commonly used in electrical applications, such as copper or aluminum. This can make it less cost-effective, especially for large-scale projects. Another limitation is that special steel has a relatively high electrical resistivity compared to copper or aluminum. This means that it is less efficient in conducting electricity, leading to higher energy losses and lower overall efficiency in electrical systems. This can be particularly important in applications where energy efficiency is a priority, such as in power generation or transmission. Additionally, special steel is generally less malleable and ductile compared to other materials like copper. This makes it less suitable for applications that require shaping or forming, as it can be more difficult to work with and may require more complex manufacturing processes. Furthermore, special steel is more prone to corrosion compared to materials like copper or aluminum. This can be a significant limitation in electrical applications, particularly in environments with high humidity or exposure to moisture. Corrosion can lead to degradation of the steel's electrical properties, reduce its lifespan, and increase maintenance and replacement costs. Lastly, special steel may not be as readily available or easily sourced as other materials commonly used in electrical applications. This can pose challenges in terms of availability, lead times, and potential supply chain disruptions, which may impact project timelines and overall productivity.

Q: How does special steel contribute to the aerospace material recyclability?: Special steel contributes to the aerospace material recyclability by offering high strength, durability, and corrosion resistance properties. These characteristics make it a preferred material for various aerospace components like landing gears, engine parts, and structural elements. When these components reach the end of their life cycle, special steel can be easily recycled and repurposed, reducing the need for new raw materials and minimizing waste. This contributes to a more sustainable and environmentally friendly aerospace industry.

Q: How is special steel used in the production of bearings for high-speed applications?: Special steel is used in the production of bearings for high-speed applications due to its unique properties such as high strength, hardness, and resistance to wear and fatigue. These bearings are subjected to intense loads and rotational speeds, and special steel helps ensure optimal performance and longevity. The use of special steel in bearing production allows for improved precision, reduced friction, and increased durability, ultimately enabling bearings to withstand the demanding requirements of high-speed applications.

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