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 is the impact of grain size on the mechanical properties of special steel?: The impact of grain size on the mechanical properties of special steel is significant. Grain size refers to the size and distribution of individual crystals within the steel structure. It is determined by factors such as the cooling rate during solidification and subsequent heat treatments. In general, a smaller grain size in special steel leads to improved mechanical properties. This is because smaller grains offer a greater number of grain boundaries, which act as barriers to dislocation movement and improve the strength of the steel. Smaller grains also provide a more uniform microstructure, enhancing the overall toughness and resistance to fracture. Additionally, a smaller grain size promotes higher hardness and increased wear resistance in special steel. This is due to the increased number of grain boundaries that hinder the movement of dislocations, preventing plastic deformation and leading to higher hardness values. On the other hand, larger grain sizes can negatively impact the mechanical properties of special steel. Larger grains have fewer grain boundaries, allowing dislocations to move more freely. This results in reduced strength, toughness, and hardness of the steel. Furthermore, larger grains can also lead to anisotropic behavior, where the mechanical properties differ in different crystallographic directions, making the steel more susceptible to failure under certain loading conditions. Therefore, controlling and optimizing the grain size in special steel is crucial to achieve desired mechanical properties. This can be achieved through precise heat treatments, such as annealing or quenching, which control the cooling rate and subsequent recrystallization processes. By controlling the grain size, special steel can be tailored to meet specific application requirements, ensuring optimal mechanical performance and reliability.

Q: How does special steel contribute to reducing product lead times?: Special steel contributes to reducing product lead times by offering several advantages. Firstly, special steel is known for its high strength and durability, allowing manufacturers to produce parts that can withstand harsh conditions and heavy usage. This ensures that the products made with special steel have a longer lifespan, reducing the need for frequent repairs or replacements. Secondly, special steel can be fabricated into complex shapes and sizes, enabling manufacturers to produce intricate components with high precision. This eliminates the need for additional machining processes, saving time and reducing lead times. Lastly, special steel often has improved mechanical properties, such as higher hardness or heat resistance, which can enhance the performance of the final product. This allows manufacturers to meet specific requirements and deliver high-quality products more efficiently, ultimately reducing lead times.

Q: How does special steel compare to other materials, such as aluminum or titanium?: Special steel is known for its exceptional strength, durability, and resistance to wear and tear, making it superior to materials like aluminum or titanium in various applications. While aluminum is lightweight, it lacks the same level of strength and toughness as special steel. Titanium, on the other hand, offers comparable strength but is significantly more expensive. Special steel strikes a balance between strength, cost-effectiveness, and versatility, making it a preferred choice in many industries.

Q: What are the different methods for improving the magnetic properties of special steel?: Improving the magnetic properties of special steel can be achieved through various methods. One effective approach is heat treatment, which involves subjecting the steel to specific heating and cooling processes. This alters the atomic structure of the steel, enhancing its magnetic properties. For example, annealing the steel at high temperatures and slowly cooling it can create a fine-grained microstructure, resulting in improved magnetic performance. Another method is alloying, where certain elements like nickel, cobalt, or aluminum are added to the steel. Even small amounts of these alloying elements can significantly enhance the steel's magnetic characteristics, increasing its saturation magnetization and improving coercivity. Cold working, also known as cold deformation, is another technique that can improve the steel's magnetic properties. By subjecting the steel to mechanical stress at low temperatures, dislocations and defects are formed within its crystal structure, leading to improved magnetization, permeability, and reduced hysteresis losses. Grain orientation is yet another method to improve the magnetic properties of special steel. This involves aligning the grains of the steel in a specific direction through processes like hot rolling or magnetic annealing. This alignment results in anisotropic magnetic properties, meaning the steel will exhibit different magnetic characteristics depending on the direction of the applied magnetic field. Surface treatments can also be utilized to enhance the magnetic properties of special steel. Coatings such as electroplating, electroless plating, or chemical vapor deposition can modify the steel's surface, improving its magnetic performance. These treatments reduce eddy current losses, enhance corrosion resistance, and increase magnetic permeability. It is important to consider specific requirements and desired characteristics when choosing a method to improve the magnetic properties of special steel. Each method has its own advantages and limitations, and factors like cost, feasibility, and desired magnetic performance should be taken into account.

Q: What are the main alloying elements used in special steel?: The main alloying elements used in special steel can vary depending on the specific type of special steel, but common alloying elements include chromium, nickel, molybdenum, vanadium, and tungsten. These elements are added to enhance the steel's properties such as corrosion resistance, strength, hardness, and heat resistance.

Q: Can special steel be used in the production of gearboxes?: Yes, special steel can be used in the production of gearboxes. Special steel, such as alloy steel or heat-treated steel, is often preferred for gear manufacturing due to its high strength, durability, and resistance to wear and fatigue. These properties make special steel well-suited for transmitting power and withstanding the demands of heavy-duty applications, making it an ideal material choice for gearboxes.

Q: How is special steel used in the production of surgical instruments?: Special steel is used in the production of surgical instruments due to its unique properties such as corrosion resistance, high strength, and durability. This type of steel is specifically designed to withstand the harsh conditions of surgical procedures, ensuring the instruments remain sharp, sterile, and reliable. The use of special steel in surgical instruments guarantees precision and quality, ultimately enhancing the safety and effectiveness of medical procedures.

Q: What are the different types of precipitation-hardening steel?: There are several types of precipitation-hardening steel, including 17-4 PH, 15-5 PH, 13-8 PH, and 17-7 PH. These steels are known for their high strength and corrosion resistance, making them suitable for various applications in industries such as aerospace, automotive, and medical.

Q: How does special steel perform in marine applications?: Special steel, also known as marine grade steel, performs exceptionally well in marine applications. This type of steel is specifically designed and manufactured to withstand the harsh and corrosive environments that are common in marine settings. One of the key advantages of special steel in marine applications is its high resistance to corrosion. Marine environments naturally contain high levels of saltwater, which can be highly corrosive to traditional steel. However, special steel is made with additional alloying elements, such as chromium and nickel, which provide excellent resistance to corrosion. This ensures that the steel remains structurally sound and maintains its strength and integrity over time. Furthermore, special steel also possesses superior strength and toughness characteristics, making it highly suitable for marine applications. It can withstand extreme temperatures, heavy loads, and impacts, making it ideal for use in shipbuilding, offshore structures, and other marine equipment. It is also highly resistant to fatigue, which is crucial for structures that are constantly exposed to dynamic loads and vibrations in marine environments. Additionally, special steel is known for its excellent weldability and machinability, allowing for easy fabrication and installation in marine applications. This steel can be easily formed into different shapes and sizes, providing flexibility in design and construction. Overall, special steel is highly reliable and durable in marine applications due to its exceptional corrosion resistance, strength, toughness, and weldability. It ensures the longevity and safety of marine structures and equipment, making it the preferred choice for various marine industries.

Q: What are the different corrosion-resistant coatings for special steel?: Various corrosion-resistant coatings are available for special steel, each possessing unique properties and advantages. Some commonly used coatings include: 1. Zinc Coating: Galvanizing and other zinc coatings are widely employed to safeguard special steel against corrosion. The zinc layer acts as a sacrificial barrier, preventing corrosive elements from coming into contact with the steel. 2. Epoxy Coating: Due to their exceptional adhesion, chemical resistance, and durability, epoxy coatings are a popular choice for corrosion protection. They create a robust barrier that shields special steel from moisture, chemicals, and other corrosive agents. 3. Polyurethane Coating: In harsh environments where special steel is exposed to extreme conditions, such as offshore or marine applications, polyurethane coatings offer exceptional resistance against abrasion, chemicals, and weathering. 4. Ceramic Coating: Ceramic coatings provide outstanding corrosion protection and high-temperature resistance. They are frequently used in industries like aerospace and automotive, where special steel must withstand extreme temperatures and corrosive environments. 5. Metal Coating: Nickel or chromium coatings are frequently applied to special steel to enhance its corrosion resistance. These coatings establish a protective layer that acts as a physical barrier, preventing corrosion. 6. Powder Coating: Powder coatings are electrostatically applied and then cured under heat, resulting in a hard and durable protective layer. They offer excellent corrosion resistance and can be customized in terms of color and texture. Choosing the appropriate corrosion-resistant coating for special steel is crucial and should be based on specific requirements and the environment it will be exposed to. Factors such as temperature, exposure to chemicals or moisture, and desired coating lifespan should all be considered when selecting the suitable coating.

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