Special Steel 1.6511 Alloy Structural Steel / 4340 Tool Steel

Special Steel 1.6511 Alloy Structural Steel / 4340 Tool Steel

Ref Price:: $300.00 - 500.00 / m.t.

Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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The details of our Steel

1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard

2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate

3. Heat treatment:

Normalized / Annealed / Quenched+Tempered

4. Quality assurance:

All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

Product information

Chemical Composition(%) of 4340 tool steel	C	Si	Mn	S	P	Cr	Mo
	0.38-0.43	≤0.40	0.60-0.80	≤0.040	≤0.035	0.90-1.20	0.15-0.30
Available Size of 4340 tool steel	Diameter(mm)		Length(mm)
	10-300		2000-6000
Characteristics of 4340 tool steel	1.high hardness 2.high tensile
Application of 4340 tool steel	extrusion dies and die-casting for alumium, mandgnesium allay mostly, for copper alloy could use mechaincal press forhing of steel
Heat Treatment of 4340 tool steel	1. Forging:Heat slowly and uniformly to 1000°C. After forging cool slowly. 2. Annealing: 780-800°C slowly cooling

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

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Special Steel 1.6511 Alloy Structural Steel / 4340 Tool Steel

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 main factors that affect the machinability of special steel?: Several factors can influence the machinability of special steel. The composition of the steel itself is one of the main factors. Special steels often contain complex alloys that enhance their properties, such as strength or corrosion resistance. However, these alloying elements can also have a negative impact on machinability. Chromium, nickel, and molybdenum, for example, can make the steel harder to machine due to their hardening or abrasive properties. The microstructure of the steel is another factor that affects machinability. Special steels can undergo heat treatments to achieve desired properties, but these treatments can also alter the microstructure of the material. The presence of carbides or precipitates can make the steel harder and more brittle, leading to increased tool wear and poorer machinability. The hardness of the steel is also important. Harder steels generally have lower machinability as they are more resistant to cutting forces. High-speed steels are often used to counteract this issue. However, excessively hard steels may require specialized tooling or machining techniques to achieve satisfactory results. Impurities or non-metallic inclusions in the steel can disrupt the cutting process and reduce tool life and surface finish. Special steel manufacturers strive to minimize impurities and control inclusion content to improve machinability. Lastly, cutting parameters and machining conditions play a significant role in determining machinability. Factors such as cutting speed, feed rate, and depth of cut must be optimized to achieve the best balance between material removal rate and tool life. Coolant usage and chip evacuation are also crucial considerations to prevent excessive heat buildup and chip recutting, which can negatively impact machinability. In conclusion, the machinability of special steel is affected by factors such as composition, microstructure, hardness, impurities, and cutting parameters. Understanding these factors and employing appropriate machining techniques can help maximize productivity and produce high-quality components from special steels.

Q:How is special steel recycled or disposed of?: The material known as special steel, or alloy steel, is highly valuable and in great demand because of its unique properties and uses. When it comes to disposing of or recycling special steel, there are several methods available depending on the condition and quality of the material. Recycling is the most preferred and commonly used method for managing special steel. The recycling process involves gathering, organizing, and melting down the steel scrap so that it can be reused in the production of new steel products. This process helps to preserve natural resources, reduce energy consumption, and minimize waste. The initial step in recycling special steel involves collecting scrap or end-of-life products that contain this material. These sources can include discarded machinery, automotive parts, construction materials, and even old appliances. Once collected, the steel is sorted and separated from other materials, such as plastic, rubber, or non-ferrous metals, using various techniques like magnetic separation, eddy current separation, or manual sorting. After the sorting process, the steel scrap is sent to a specialized recycling facility, commonly referred to as a steel mill or foundry. Here, the scrap is melted down in large furnaces at extremely high temperatures. During this process, impurities and contaminants are removed, and alloying elements can be added to achieve the desired composition and properties of the steel. Once the steel has been melted and purified, it is cast into various forms such as ingots, billets, or slabs, which can then be used to manufacture new steel products. These products may include pipes, bars, plates, or even new machine parts, depending on the specific needs of the industry. When it comes to disposal, special steel should be seen as a valuable resource and not simply discarded as waste. However, in cases where the steel is irreparably damaged or contains hazardous materials, proper disposal methods must be followed. This typically involves seeking advice from specialized waste management companies that can handle the safe and environmentally friendly disposal of such materials. In conclusion, special steel is primarily recycled due to its high value and the various benefits associated with recycling. Through the processes of collection, sorting, and melting, special steel can be transformed into new products while conserving resources and minimizing waste. Proper disposal methods are only necessary in exceptional cases where recycling is not feasible or when dealing with damaged or hazardous materials.

Q:What are the properties of martensitic steel?: Martensitic steel is a type of stainless steel known for its high strength, hardness, and resistance to corrosion. It is characterized by a unique microstructure, formed through rapid cooling or quenching from high temperatures, which results in a hard, brittle material. Martensitic steel typically exhibits excellent wear resistance, making it suitable for applications such as cutlery, knives, and industrial tools. However, it may have reduced toughness and lower ductility compared to other stainless steel types.

Q:How does special steel compare to other high-performance materials?: Special steel is known for its exceptional strength, durability, and versatility, which sets it apart from other high-performance materials. Compared to materials like aluminum, titanium, and composites, special steel often exhibits higher tensile strength, making it suitable for applications that require robustness and load-bearing capabilities. Additionally, special steel has excellent resistance to corrosion, heat, and wear, making it ideal for use in harsh environments or high-temperature applications. One advantage of special steel over other high-performance materials is its cost-effectiveness. Compared to materials like titanium, special steel is more affordable, making it a preferred choice for various industries. Moreover, the manufacturing process of special steel allows for customization, enabling the production of a wide range of grades and compositions to suit specific requirements. Special steel also offers excellent machinability and weldability, allowing for easy fabrication and assembly. Its versatility enables it to be used in a wide range of industries, including automotive, aerospace, construction, and energy. From structural components to precision tools, special steel provides a reliable and efficient solution. However, it is important to note that the choice of material depends on the specific application and its requirements. While special steel has numerous advantages, other high-performance materials may be more suitable for certain applications, such as lightweight components or extreme temperature conditions. Therefore, a comprehensive evaluation of the specific needs and characteristics of the application is necessary before determining the most appropriate material.

Q:How does special steel contribute to the industrial machinery aftermarket industry?: Special steel plays a crucial role in the industrial machinery aftermarket industry by providing high-quality and durable components that enhance the performance and longevity of machinery. One of the main contributions of special steel to this industry is its exceptional strength and resistance to wear and tear. Industrial machinery is subjected to heavy loads, extreme temperatures, and corrosive environments, which can cause regular steel components to deteriorate quickly. However, special steel alloys are specifically designed to withstand these harsh conditions, ensuring that the machinery operates efficiently for an extended period. Moreover, special steel offers excellent machinability, making it easier to manufacture intricate and precise components. This enables aftermarket manufacturers to produce replacement parts that perfectly fit into existing machinery, minimizing downtime during repairs and maintenance. Additionally, special steel's machinability allows for customization, as it can be easily shaped and modified to meet the specific requirements of different machinery models. Furthermore, special steel's exceptional heat resistance makes it ideal for the production of high-temperature components used in industrial machinery. These components, such as turbine blades or furnace parts, need to withstand intense heat without losing their structural integrity. Special steel alloys possess excellent heat resistance properties, ensuring that the machinery can operate at high temperatures without compromising performance or safety. Additionally, special steel contributes to the industrial machinery aftermarket industry by providing corrosion-resistant components. Many industries, such as oil and gas or marine, expose machinery to corrosive substances or environments. Regular steel components are susceptible to corrosion, leading to premature failure and costly repairs. However, special steel alloys are highly resistant to corrosion, enhancing the durability and reliability of machinery in these demanding conditions. Overall, special steel's unique properties, including strength, machinability, heat resistance, and corrosion resistance, significantly contribute to the industrial machinery aftermarket industry. By utilizing special steel components, manufacturers can enhance the performance, durability, and longevity of machinery, reducing downtime, and improving overall operational efficiency.

Q:What are the different methods of surface electroplating for special steel?: There are several methods of surface electroplating for special steel, including electroless plating, electroplating by immersion, barrel plating, and rack plating. Electroless plating is a chemical process that uses a reducing agent to deposit a layer of metal onto the steel surface. Electroplating by immersion involves immersing the steel in an electrolyte bath and applying an electric current to deposit a metal coating. Barrel plating is a method where the steel parts are placed in a rotating barrel along with the plating solution, creating a tumbling action that ensures an even coating. Rack plating involves suspending the steel parts on a rack and immersing them in the plating bath. Each method has its own advantages and is chosen based on the specific requirements and characteristics of the special steel being plated.

Q:How does precipitation-hardening steel achieve high strength through heat treatment?: Precipitation-hardening steel achieves high strength through heat treatment by a process called aging. This involves heating the steel to a specific temperature and holding it there for a certain period of time, followed by rapid cooling. During this process, the alloying elements in the steel form fine particle precipitates, which obstruct the movement of dislocations within the crystal structure. These precipitates act as barriers that hinder the deformation of the material, resulting in increased strength.

Q:What are the different methods of hardening special steel?: There are several methods of hardening special steel, each with its own advantages and applications. 1. Quenching: This is a common method used to harden steel. It involves heating the steel to a critical temperature and then rapidly cooling it by immersing it in a quenching medium such as oil, water, or air. This rapid cooling causes the formation of a martensitic structure, which is harder and more brittle than the original steel. 2. Tempering: After quenching, the steel is often tempered to reduce brittleness and improve toughness. Tempering involves reheating the hardened steel to a specific temperature and holding it at that temperature for a predetermined amount of time. This process helps to reduce internal stresses and improve the overall mechanical properties of the steel. 3. Case hardening: This method is used to increase the hardness of the outer layer of steel while maintaining a tough and ductile core. Case hardening involves introducing carbon or nitrogen into the surface of the steel through processes like carburizing or nitriding. This creates a hard surface layer while maintaining the desired properties in the core. 4. Induction hardening: This technique is commonly used for specific areas of a component that require localized hardening. It involves using an electromagnetic field to heat only a specific region of the steel, followed by rapid quenching. Induction hardening provides precise control over the hardened area while maintaining the desired properties in the rest of the component. 5. Cryogenic treatment: This method involves subjecting the hardened steel to extremely low temperatures, often below -150°C (-238°F). This process helps to further refine the microstructure of the steel, improving its hardness, wear resistance, and dimensional stability. 6. Flame hardening: This method involves heating the surface of the steel using a high-temperature flame and then quenching it. Flame hardening is commonly used for large components or areas that require localized hardening. It is important to choose the appropriate method based on the specific requirements of the steel and the intended application. The selection of the method depends on factors such as the desired hardness, toughness, wear resistance, and dimensional stability of the steel.

Q:How is special steel used in the telecommunications industry?: Special steel is used in the telecommunications industry for various applications. It is primarily used in the manufacturing of transmission towers, antenna supports, and other structural components. The high strength and durability of special steel make it ideal for withstanding extreme weather conditions and providing stability for communication infrastructure. Additionally, special steel is also used in the production of cables and wires to ensure efficient signal transmission and minimize signal loss.

Q:Can special steel be used in the production of valves and fittings?: Yes, special steel can be used in the production of valves and fittings. Special steel, such as stainless steel or alloy steel, offers excellent corrosion resistance, high temperature resistance, and durability, making it suitable for applications in various industries including oil and gas, chemical, and petrochemical.

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