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 perform under high-temperature oxidation?: Special steel performs well under high-temperature oxidation due to its inherent resistance to corrosion and ability to form protective oxide layers, which protect the material from further oxidation. This characteristic makes it suitable for applications in high-temperature environments, such as in power plants, chemical processing facilities, and aerospace industry.

Q: How is special steel tested for quality?: Special steel is tested for quality through a series of rigorous examinations and tests. These include visual inspections, chemical composition analysis, mechanical property testing, and non-destructive testing methods such as ultrasonic testing and magnetic particle testing. These tests ensure that the special steel meets the necessary standards and specifications for its intended use, guaranteeing its quality and performance.

Q: What are the properties of precipitation-hardening steel?: Precipitation-hardening steel, also known as PH steel, possesses unique properties that make it highly sought after in various industries. This type of steel has the remarkable ability to be strengthened through a precipitation process, resulting in improved mechanical properties. Some key properties of precipitation-hardening steel include excellent strength, good corrosion resistance, and the ability to maintain these properties at high temperatures. Additionally, PH steel offers good weldability and machinability, making it suitable for a wide range of applications where strength, durability, and resistance to wear and tear are crucial.

Q: What are the specific requirements for special steel used in the automotive piston industry?: In order to ensure high performance, durability, and efficiency of pistons in the automotive piston industry, specific requirements for the special steel used have been established. These requirements encompass the following: 1. High tensile strength and hardness are essential for the special steel used in automotive pistons to withstand the extreme pressures and temperatures generated during combustion. 2. The steel must exhibit exceptional heat resistance properties to endure the intense heat produced by the combustion process without distorting or losing strength. 3. Given the constant friction and wear that pistons endure against the cylinder walls, the special steel used must possess good wear resistance to minimize wear and tear and extend the lifespan of the piston. 4. To ensure a secure seal between the piston and cylinder walls, the steel should have a low coefficient of thermal expansion, preventing excessive expansion and contraction during temperature fluctuations. 5. Since pistons are exposed to various corrosive elements, such as combustion by-products and engine oil, the special steel used in their manufacturing must possess good corrosion resistance to prevent premature deterioration and failure. 6. The steel should exhibit excellent fatigue resistance to withstand the repetitive stress cycles experienced by the piston during engine operation. 7. Special steel used in pistons should be easily machinable, allowing for precise dimensions and tolerances necessary for optimal performance. 8. While meeting the aforementioned requirements, special steel used in the automotive piston industry should also be cost-effective to ensure profitability for manufacturers. By meeting these specific requirements, the special steel used in the automotive piston industry contributes to the overall performance, reliability, and longevity of the piston. Consequently, this enhances the efficiency and durability of the entire engine system.

Q: How is tool and die steel used in the manufacturing of molds and dies?: Tool and die steel is used in the manufacturing of molds and dies because of its high hardness, wear resistance, and toughness properties. It is used to create and shape various components of molds and dies, such as inserts, cavities, and cores, which are crucial in the production of plastic, metal, or other materials. Additionally, tool and die steel also provides the necessary strength and durability to withstand the high pressure, heat, and repeated use involved in the manufacturing process.

Q: How does special steel contribute to the manufacturing of structural components?: The unique properties and characteristics of special steel are crucial in the manufacturing of structural components. Firstly, its exceptional strength and durability make it an ideal material for load-bearing structures, as it can withstand high levels of stress, pressure, and heavy loads, ensuring their safety and integrity. In addition, special steel's excellent corrosion resistance is particularly important for structural components exposed to harsh environments. This feature helps prevent rusting and deterioration, thereby extending the lifespan of the components and reducing maintenance costs. Moreover, special steel offers a high degree of versatility in terms of design and fabrication. It can be easily shaped, molded, and welded, allowing manufacturers to create complex and intricate components with precision. This flexibility enables the production of customized components that meet specific requirements, enhancing the overall performance and functionality of the structures. Furthermore, special steel exhibits excellent heat resistance and fireproofing properties, making it suitable for components exposed to high temperatures or fire hazards. This is particularly important in industries such as industrial facilities, power plants, or transportation infrastructure, where fire protection is vital. Additionally, special steel often has superior fatigue resistance, allowing it to withstand repetitive or cyclic loading without suffering from fatigue failure. This property is crucial for components subjected to dynamic or fluctuating loads. In conclusion, special steel significantly contributes to the manufacturing of structural components by providing strength, durability, corrosion resistance, versatility in design, heat resistance, fireproofing, and fatigue resistance. Its unique properties make it an essential material choice for constructing safe, reliable, and long-lasting structures across various industries.

Q: What are the different heat treatment methods used for special steel?: There are several heat treatment methods used for special steel, including annealing, quenching, tempering, normalizing, and case hardening.

Q: What are the safety considerations when handling special steel products?: Special steel products require careful attention to safety. Firstly, wearing appropriate personal protective equipment (PPE) is crucial. Gloves, safety glasses, and steel-toed boots should be worn to safeguard against potential injuries from sharp edges, heavy weight, or flying debris. Secondly, it is important to take note of the weight and size of the special steel products. Mechanical lifting equipment or assistance from others may be necessary to prevent strain or injury when dealing with large or heavy items. Furthermore, a thorough inspection of the special steel products should be conducted prior to handling. This involves checking for cracks, fractures, or any other structural issues that could compromise their integrity. If any defects are discovered, they must be reported to the appropriate personnel and the products should not be used until they are deemed safe. In addition, specific handling techniques or tools may be required for special steel products. Strict adherence to the manufacturer's guidelines and instructions is crucial to ensure safe handling. This may involve utilizing specialized lifting equipment, clamps, or supports to prevent accidents or damage. Lastly, proper training and knowledge are essential for safe handling of special steel products. This includes understanding the weight limits of lifting equipment, knowing how to properly secure and stabilize the products, and being aware of any potential hazards or risks associated with the specific type of steel being handled. By adhering to these safety considerations, the risk of accidents, injuries, or damage can be minimized when dealing with special steel products.

Q: Can special steel be used in the medical industry?: Yes, special steel can be used in the medical industry. Special steel, specifically stainless steel, is commonly used in the manufacturing of medical devices and equipment due to its corrosion resistance, biocompatibility, and sterilization capabilities. It is used for surgical instruments, implants, prosthetics, and various other medical applications where durability, hygiene, and non-reactivity are essential.

Q: What are the requirements for special steel used in high-strength applications?: Special steel used in high-strength applications typically has specific requirements to ensure its performance and durability. These requirements include: 1. High tensile strength: Special steel used in high-strength applications must have a high tensile strength to withstand heavy loads and resist deformation. This allows it to handle greater stresses without failure. 2. Excellent toughness: The steel should possess excellent toughness, which refers to its ability to absorb energy and resist fracture. This is crucial in high-strength applications as it prevents sudden and catastrophic failure under impact or dynamic loading conditions. 3. Superior hardness: High-strength steel needs to have a high level of hardness to resist wear, abrasion, and indentation. This ensures that the material maintains its structural integrity and performance even under extreme conditions. 4. Good ductility: While high tensile strength is essential, the steel should also possess good ductility, which allows it to undergo plastic deformation without fracturing. This property is vital in applications where the steel needs to be formed or shaped during manufacturing processes. 5. Resistance to corrosion: Special steel used in high-strength applications should have excellent corrosion resistance to prevent degradation caused by exposure to moisture, chemicals, or harsh environments. This ensures its longevity and reliability in various conditions. 6. Heat resistance: Some high-strength applications involve exposure to high temperatures, so the steel should have good heat resistance to maintain its mechanical properties and structural stability under elevated temperatures. 7. Controlled alloying elements: Special steel used in high-strength applications often contains specific alloying elements such as chromium, molybdenum, nickel, or vanadium. These elements are added to improve the steel's strength, toughness, hardness, and other desired properties. 8. Precise composition and microstructure: The steel should have a well-controlled composition and microstructure to ensure consistent and predictable mechanical properties. This can be achieved through precise manufacturing processes, such as controlled cooling rates or heat treatments. Meeting these requirements ensures that special steel used in high-strength applications can withstand the demanding conditions it is subjected to, providing reliable performance, longevity, and safety.

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