Special Steel Gear Steel SCM420H Round Bar

Special Steel Gear Steel SCM420H Round Bar System 1

Special Steel Gear Steel SCM420H 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 Comparison

GB	DIN	JIS	NF	BS	AISI
20CrMoH	25CrMo4	SCM420	25CrMo4	25CrMo4	4118

2. Specification

Commodity	SCM420H Round bar
diameter	10-300mm
Length	3000-15000mm
Productive Technology	Hot-Rolled
Tolerance	+/-0.15mm
Application	Gear. Axis. Ring. Gears shafts. Sliding bearing spindle beams and Clutch etc
	C	0.17-0.23
Chemical Composition of Material	Si	0.15-0.35
	Mn	0.55-0.90
	P	0.030
	S	0.030
	Cr	0.85-1.25
	Ni	0.030
	Cu	0.030
Mechanical Property	Tensile Strength	1080
	Yield Strength	835
	Extension	≥10
	Hardness	217HB

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Special Steel Gear Steel SCM420H 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: What are the international standards for special steel?: The international standards for special steel are a set of guidelines and specifications that ensure the quality, performance, and safety of special steel products worldwide. These standards cover various aspects such as chemical composition, mechanical properties, heat treatment, and testing methods. Examples of international standards for special steel include ISO 4957 for tool steels, ASTM A681 for high-carbon and alloy tool steels, and EN 10083 for quenched and tempered steels. Compliance with these standards helps manufacturers, suppliers, and users to meet global requirements and maintain consistency in the production and use of special steel.

Q: What are the emerging trends in the special steel industry?: Some of the emerging trends in the special steel industry include the growing demand for advanced high-strength steels (AHSS) in automotive applications due to their lightweight and high performance properties. Additionally, there is an increasing focus on sustainability and eco-friendly manufacturing processes, leading to the development of cleaner production methods and the use of recycled materials. Furthermore, advancements in technology and innovation are driving the adoption of specialty steels in sectors such as aerospace, energy, and construction.

Q: What are the main alloying elements in special steel?: The main alloying elements in special steel are chromium, nickel, molybdenum, vanadium, and tungsten.

Q: How does special steel perform in high-temperature fatigue?: Special steel performs well in high-temperature fatigue due to its enhanced mechanical properties and resistance to thermal degradation. It exhibits excellent strength, toughness, and creep resistance, allowing it to withstand prolonged exposure to elevated temperatures without significant loss in performance. Additionally, special steel is designed to maintain its structural integrity and resist fatigue failure even under repeated cyclic loading, making it a reliable choice for high-temperature applications.

Q: Can special steel be used in the automotive racing industry?: Yes, special steel can be used in the automotive racing industry. Special steel alloys, like high-strength steels or heat-resistant steels, are commonly utilized to enhance performance, durability, and safety in racing vehicles. These specialized steels offer superior strength-to-weight ratios, improved mechanical properties, and resistance to extreme temperatures, making them ideal for various automotive racing applications such as chassis, suspension components, engine parts, and exhaust systems.

Q: What are the properties of magnetic steel?: Magnetic steel is characterized by its ability to attract and hold a magnetic field. It is typically a hard and strong material, making it suitable for various applications such as in the production of magnets, electrical transformers, and motors. Magnetic steel also has high permeability, allowing it to efficiently conduct magnetic flux. Additionally, it exhibits good resistance to corrosion, which helps maintain its magnetic properties over time.

Q: What are the different international standards for special steel?: There are several international standards for special steel, including the American Society for Testing and Materials (ASTM) standards, the International Organization for Standardization (ISO) standards, and the European Standards (EN) standards. These standards define the chemical composition, mechanical properties, and testing requirements for various types of special steel, ensuring quality and consistency in their production and usage worldwide.

Q: What are the main factors affecting the corrosion fatigue strength of special steel?: The main factors affecting the corrosion fatigue strength of special steel include the corrosive environment, the presence of aggressive substances, the level of stress applied, the frequency of stress cycling, and the microstructure and composition of the steel itself.

Q: How does the cost of special steel compare to regular steel?: The cost of special steel is generally higher compared to regular steel. Special steel is specifically designed and produced to possess exceptional properties and characteristics that regular steel does not have. It undergoes additional processes such as alloying, heat treatment, or specialized manufacturing techniques to enhance its strength, durability, corrosion resistance, and other desirable attributes. These added steps in production increase the overall cost of special steel. On the other hand, regular steel is more readily available and is produced on a larger scale. It is often used for general purposes and applications where high-performance qualities are not required. Regular steel is relatively cheaper due to its lower production costs and wider availability in the market. However, it is important to note that the cost comparison between special steel and regular steel can vary depending on various factors such as the specific type of steel, the quantity being purchased, market conditions, and any additional customization required. Therefore, it is advisable to consult with steel suppliers or specialists to get accurate pricing information based on specific requirements.

Q: How does special steel contribute to the medical field?: Unique properties and characteristics of special steel are essential in the medical field, playing a crucial role. Surgical instruments and medical devices heavily rely on special steel due to its exceptional strength, durability, and corrosion resistance. These qualities ensure that the instruments can endure the demanding surgical environment, maintain sharpness for extended periods, and withstand sterilization processes. Moreover, special steel finds application in the manufacturing of implants and prosthetics. Its biocompatibility and high strength-to-weight ratio make it an ideal material for creating artificial joints, spinal implants, and dental implants. The ability of special steel to integrate with the human body without causing adverse reactions or rejection is vital for the success of these medical interventions. Additionally, special steel is utilized in the production of medical equipment such as MRI machines, X-ray machines, and radiation shields. Certain types of special steel possess unique magnetic properties, enabling the creation of powerful magnets used in MRI machines. This allows for detailed and accurate imaging of the human body. Furthermore, special steel's ability to shield against radiation makes it a critical component in radiation therapy equipment, safeguarding healthcare professionals and patients from harmful radiation exposure. In conclusion, special steel's strength, durability, corrosion resistance, biocompatibility, and unique magnetic properties make it an indispensable material in the medical field. It finds applications in surgical instruments, medical devices, implants, prosthetics, and medical equipment. The contributions of special steel in ensuring the safety, effectiveness, and success of various medical procedures and treatments are invaluable.

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