Special Steel ASTM4140 Alloy Steel Round Bar

Special Steel ASTM4140 Alloy Steel Round Bar System 1

Special Steel ASTM4140 Alloy Steel Round 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. Grade: 4140,SAE4140, 42CrMo4, 1.7225,SCM440

2. Specification: Dia: 16~800mm Length:2000-13000mm or as required

3. Process: EAF+LF+VD

4. Technique:Forged

5.Treatment:hot rolled,cold drawn

6.Mechanical performance:

Strength of extension	1080MPA
Yield point	930MPA
Elongation	12%
Contractibility rate	45%
Impacting energy	63J

7.Chemical composition(for reference only):

Grade	C	Si	Mn	P≤	S≤	Cr	Mo
SAE4140	0.38/0.43	0.15/0.35	0.75/1.00	0.035	0.035	0.80/1.10	0.15/0.25

8. Compared grades of 4140 steel

GB-China	AISI-America	DIN-GERMANY	JIS-Japan
42CrMo	4140	1.7225 42CrMo4	SCM440

GB-China

AISI-America

DIN-GERMANY

JIS-Japan

42CrMo

4140

1.7225

42CrMo4

SCM440

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Special Steel ASTM4140 Alloy Steel Round 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: Can special steel be used in the telecommunications industry?: Yes, special steel can be used in the telecommunications industry. Special steel, such as stainless steel or corrosion-resistant steel, can be utilized for various applications in telecommunications infrastructure, including tower structures, antenna components, cables, and connectors. These types of steel offer high strength, durability, and corrosion resistance, ensuring reliable and long-lasting performance in the telecommunications sector.

Q: What are the main advantages of using special steel in the marine industry?: The main advantages of using special steel in the marine industry are its high strength and durability, corrosion resistance, and ability to withstand extreme conditions. Special steel provides the necessary structural integrity to withstand the harsh marine environment, including exposure to saltwater, waves, and impact forces. It also offers excellent resistance to corrosion, which is crucial for maintaining the integrity and longevity of marine structures. Moreover, special steel's ability to withstand extreme temperatures and pressures makes it suitable for various marine applications, such as shipbuilding, offshore structures, and marine equipment.

Q: How does tool and die steel maintain its hardness and wear resistance?: Tool and die steel maintains its hardness and wear resistance through a combination of factors, including its composition and heat treatment. It is typically made from high-carbon and high-chromium alloys, which provide inherent hardness and resistance to wear. Additionally, the steel is subjected to a specific heat treatment process, such as quenching and tempering, which further enhances its hardness and toughness. This combination of composition and heat treatment allows the tool and die steel to withstand the high pressures, repeated impacts, and abrasive forces encountered in tooling and die applications, thus maintaining its hardness and wear resistance over time.

Q: How does special steel compare to other materials like aluminum or titanium?: Special steel is known for its exceptional strength, durability, and resistance to corrosion, making it a popular choice for various applications. Compared to materials like aluminum or titanium, special steel often offers superior strength and toughness, making it suitable for heavy-duty industries such as construction, automotive, and aerospace. While aluminum is lightweight and has good corrosion resistance, it may lack the necessary strength for certain demanding applications. Titanium, on the other hand, is lightweight and possesses excellent strength-to-weight ratio, but it is more expensive and difficult to process than special steel. Ultimately, the choice between special steel, aluminum, or titanium depends on the specific requirements of the application at hand.

Q: How does special steel contribute to the manufacturing industry?: Special steel contributes to the manufacturing industry by providing a high-quality and versatile material that can be used in various applications. Its unique properties, such as increased strength, durability, and resistance to corrosion, make it suitable for manufacturing components and machinery used in sectors like automotive, aerospace, construction, and energy. Special steel enhances product performance, extends equipment lifespan, and enables the development of innovative solutions, ultimately driving productivity and competitiveness in the manufacturing industry.

Q: How is boron steel used in automotive safety applications?: Boron steel is used in automotive safety applications due to its high strength and ability to absorb and distribute impact energy. It is commonly used in the construction of safety cages, reinforcements, and components such as side impact beams, door beams, and crash boxes. Its exceptional crashworthiness properties help improve the structural integrity of vehicles, enhance occupant protection, and reduce the risk of serious injuries during accidents.

Q: Can special steel be used in the wood manufacturing industry?: Yes, special steel can be used in the wood manufacturing industry. Special steel, such as high-speed steel or tool steel, can be utilized in the production of cutting tools, saw blades, or other machinery components used in wood processing. These types of steel offer enhanced durability, hardness, and resistance to wear, making them suitable for various wood manufacturing applications.

Q: How does special steel perform in high-frequency applications?: Special steel performs well in high-frequency applications due to its excellent conductivity and high magnetic permeability. These properties allow it to efficiently transmit and handle high-frequency currents and electromagnetic fields, minimizing energy losses and ensuring efficient performance in applications such as transformers, electrical motors, and high-frequency electromagnetic shielding.

Q: How is wear-resistant steel used in mining equipment?: Wear-resistant steel is commonly used in mining equipment to enhance their durability and longevity. It is specifically designed to withstand the harsh conditions and abrasive environments typically found in mining operations. Components such as buckets, blades, chutes, crushers, and screens are often made from wear-resistant steel to prevent excessive wear and damage caused by rocks, minerals, and other abrasive materials. This steel's high hardness and toughness properties ensure that the equipment can withstand the constant impact and abrasion, reducing maintenance needs and extending the equipment's lifespan.

Q: How is special steel used in the production of cutting inserts?: The unique properties of special steel make it the ideal choice for producing cutting inserts. Cutting inserts are utilized in machining operations to shape and remove material from a workpiece. These inserts must possess the ability to endure high temperatures, resist wear and abrasion, and maintain their sharp cutting edges for extended periods. Commonly referred to as tool steel, special steel is specifically engineered to meet these requirements. It is an alloy that incorporates a variety of elements like chromium, tungsten, vanadium, and molybdenum, which enhance its mechanical properties. With its exceptional hardness, toughness, and resistance to high temperatures, special steel is a suitable material for cutting inserts. To further augment its properties, the special steel employed in manufacturing cutting inserts undergoes a series of processes, including heat treatment. This process involves subjecting the steel to specific temperatures and rapidly cooling it, resulting in increased strength and hardness. By undergoing heat treatment, the cutting inserts become capable of withstanding the extreme forces and temperatures encountered during machining operations. Moreover, special steel can be coated with materials like titanium nitride or diamond-like carbon to enhance its performance. These coatings contribute to the hardness, friction reduction, and overall wear resistance of the cutting inserts, ultimately extending their lifespan and improving efficiency. In conclusion, special steel is selected for the production of cutting inserts due to its remarkable hardness, toughness, high-temperature resistance, and wear resistance. These properties enable the cutting inserts to withstand the demanding conditions of machining operations and retain their sharp cutting edges for prolonged periods. As a result, material removal is carried out efficiently and precisely.

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