Special Steel Hot Rolled SCM440 Material Round Bar

Special Steel Hot Rolled SCM440 Material Round Bar System 1

Special Steel Hot Rolled SCM440 Material 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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Chemical Element for JIS SCM440 round alloy steel bar

Standard	Grade Number
GB	42CrMo	C	Si	Mn	P	S	Cr	Ni	Mo	Cu
ASTM	4140	0.36-0.44	0.10-0.40	0.65-1.10	≤0.04	≤0.04	0.75-1.20	-	0.15-0.35	≤0.030
DIN	42CrMo4 1.7225	0.35-0.44	0.15-0.30	0.70-0.90	≤0.035	≤0.04	0.80-1.10	-	0.15-0.25	≤0.025
JIS	SCM440	0.38-0.42	0.15-0.35	0.60-0.85	≤0.03	≤0.03	0.9-1.20	≤0.25	0.15-0.30	≤0.30

Physical Properties for JIS SCM440 round alloy steel bar

Physical Properties
Tensile Strength (MPa)		≥1080(110)
Yield strength(MPa)		≥930(95)
Elongation(%)		≥12
Reduction of area(%)		≥45
Akv (J)		≥63
Impact roughness(J/cm2)		≥78(8)
Hardness		≤217HB
Specimen size		25mm

Surface Treatment: painting,plating,polishing,black oxide,transparent anti-rust oil

Heat treatment: Normalized / Annealed / Quenched / tempered

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Special Steel Hot Rolled SCM440 Material 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

Main Product

Plastic Mould Steel

DIN 1.2311,1.2738,1.2083,1.2316 etc.

AISI P20,P20+Ni,420 etc.

JIS SUS420J2

Hot Work Steel

DIN 1.2344,1.2343,1.2367,1.2365,1.2581,1.2713 etc.

AISI H13,H11,H10,H21, etc.

JIS SKD61,SKD6,SKD5,SKT4 etc.

Cold Work Steel

DIN 1.2739, 1.2601, 1.2080, 1.2436, 1.2631, 1.263, 1.2510, 1.2327 etc.

AISI D2, D5, D3, D6, A8, A2, O1 etc.

JIS SKD10, SKD11, SKD1, SKS3 etc.

High Speed Steel

DIN 1.3343, 1.3243, 1.3247, 1.3355 etc.

AISI M2, M35, M42, T1 etc.

JIS SKH51, SKH35, SKH59, SKH2 etc.

Alloy Structural Steel

DIN 1.7035,1.6511,1.7220,1.7225 etc.

AISI 5140, 4340, 4135, 4140 etc.

JIS SCr440,SNCM439,SCM435,SCM440 etc.

Stainless & Carbon Steel or Others

DIN 1.4125,1.1191 etc

AISI 440C,1045, 1020 etc.

JIS SUS440C,S45C etc

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 chemical processing industry?: Yes, special steel can be used in the chemical processing industry. Special steel alloys are designed to have excellent resistance to corrosion, high temperatures, and chemical reactions, making them suitable for use in various chemical processes. These steels can withstand harsh environments, such as exposure to corrosive chemicals, acids, and high-pressure conditions, ensuring the longevity and reliability of equipment and structures in the chemical processing industry.

Q:What are the properties of wear-resistant tool steel?: Wear-resistant tool steel typically possesses high hardness, excellent toughness, and good resistance to abrasion, corrosion, and deformation. It is capable of maintaining its cutting edge for extended periods, making it ideal for applications where tools are subjected to high wear and friction. Additionally, wear-resistant tool steel often exhibits good heat resistance, ensuring stability and performance even under high temperatures.

Q:How does bearing steel contribute to the manufacturing of bearings?: Bearing steel is a specific type of steel that offers high hardness, durability, and corrosion resistance, making it ideal for the manufacturing of bearings. The properties of bearing steel allow for the creation of strong and long-lasting bearing components that can withstand heavy loads, high temperatures, and intense rotational speeds. The steel's hardness helps to prevent wear and deformation, ensuring smooth and efficient bearing operation. Overall, bearing steel plays a crucial role in ensuring the reliability and performance of bearings in various industrial applications.

Q:What are the properties of high-strength alloy steel?: High-strength alloy steel possesses several key properties that make it desirable for various applications. It has excellent tensile strength, allowing it to withstand heavy loads and resist deformation. The steel also exhibits high toughness, making it resistant to fracture even under extreme conditions. Furthermore, it offers exceptional corrosion resistance, ensuring longevity and durability in harsh environments. Additionally, high-strength alloy steel often maintains its properties at elevated temperatures, making it suitable for high-pressure and high-temperature applications.

Q:What are the different non-metallic inclusions in special steel?: Special steel contains various types of non-metallic inclusions, which are typically formed during the steelmaking process and can significantly affect the steel's properties and performance. One prevalent form of non-metallic inclusion is oxide inclusions, which result from the reaction between oxygen and elements like silicon, manganese, and aluminum present in the steel. These inclusions can have adverse effects on the steel's mechanical properties, diminishing its toughness and ductility. Sulfide inclusions represent another type of non-metallic inclusion, formed through the reaction of sulfur with elements such as manganese and iron. These inclusions can also negatively impact the steel's mechanical properties, acting as sites of stress concentration and facilitating crack initiation. Nitride inclusions, formed by the reaction of nitrogen with elements like aluminum and titanium, are also found in special steel. These inclusions contribute positively to the steel's properties, enhancing its strength and hardness. Special steel may also contain other non-metallic inclusions, including carbide inclusions, which form when carbon reacts with elements like iron and chromium, and silicate inclusions, formed through the reaction of silica with elements such as calcium and aluminum. In summary, the presence and characteristics of non-metallic inclusions greatly influence the performance and suitability of special steel for specific applications. Therefore, steel manufacturers must carefully control and minimize the formation of these inclusions to produce high-quality steel with desired properties.

Q:What are the properties of magnetic stainless steel?: Magnetic stainless steel is a type of stainless steel that exhibits magnetic properties due to its high iron content. It possesses good corrosion resistance, durability, and high strength, making it suitable for various applications. Additionally, it is easily formable and weldable, allowing for versatility in manufacturing processes.

Q:What are the different international trade regulations for special steel?: Special steel, which is produced for specific applications or industries, falls under the purview of various international trade regulations. These regulations have the objectives of ensuring fair trade practices, protecting domestic industries, and promoting safety standards. The World Trade Organization (WTO) agreements are one of the primary international trade regulations for special steel. The WTO, through agreements like the General Agreement on Tariffs and Trade (GATT) and the Agreement on Safeguards, establishes rules for global trade. These agreements address issues such as tariffs, non-tariff barriers, and safeguard measures that may be imposed on imports of special steel. Another significant regulation is the Harmonized System (HS) codes. These codes provide a standardized system of names and numbers to classify traded products. Special steel is assigned specific HS codes, which enable customs authorities to determine the relevant duties and regulations applicable to these products during import or export. Regional trade agreements (RTAs) also play a role in regulating international trade of special steel. RTAs are agreements between countries or regions that aim to reduce trade barriers and promote economic integration. Examples of such agreements include NAFTA, the EU, and the CPTPP. They often include provisions related to tariffs, technical standards, and trade facilitation for special steel. Furthermore, certain countries may have specific regulations concerning the import or export of special steel. These regulations may encompass licensing requirements, quality standards, safety certifications, or restrictions on certain types of steel. Businesses involved in the trade of special steel must be aware of these country-specific regulations to ensure compliance. In conclusion, the regulations governing international trade of special steel encompass a variety of agreements, codes, and country-specific rules. Adhering to these regulations is crucial for companies engaged in global trade to ensure compliance, avoid penalties, and uphold fair trade practices.

Q:How is alloy steel different from carbon steel?: Alloy steel differs from carbon steel in that it contains additional elements, such as nickel, chromium, or molybdenum, which enhance its strength, hardness, and corrosion resistance. This makes alloy steel more suitable for applications that require high performance and durability, while carbon steel is typically used for general-purpose applications.

Q:How does special steel contribute to the energy storage industry?: Special steel plays a crucial role in the energy storage industry by providing high-strength and corrosion-resistant components for the manufacturing of batteries, turbines, and other energy storage systems. It enables the production of more efficient and durable energy storage devices, improving their overall performance and lifespan. Special steel also helps in reducing energy losses during storage and transmission processes, thus contributing to the increased efficiency of the energy storage industry.

Q:How does special steel contribute to the chemical resistance of products?: Special steel contributes to the chemical resistance of products by offering enhanced corrosion resistance properties due to its unique composition and manufacturing process. It contains alloying elements such as chromium and nickel, which form a protective oxide layer on the surface that prevents the steel from reacting with corrosive substances. This makes special steel highly resistant to acids, alkalis, and other chemicals, ensuring the longevity and reliability of products in various industries.

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