Hot Forged Alloy Structure Steel Round Bars Special Steel

Hot Forged Alloy Structure Steel Round Bars Special Steel

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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 composition of steel bar

Standard	C	Si	Mn	Cr	Ni	P/S ≤
DIN	≤0.15	≤1.0	≤2.0	18	9	0.03
GB	≤0.15	≤1.0	≤2.0	18	9	0.03

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Hot Forged Alloy Structure Steel Round Bars Special 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

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: What are the different methods for improving the toughness of tool steels used in special steel?: Tool steels used in special steel applications can be toughened through various methods. The goal is to increase their resistance to fracture and ability to absorb energy without becoming brittle. Some techniques for improving the toughness of tool steels include: 1. Alloying: Adding specific alloying elements like chromium, molybdenum, vanadium, and tungsten significantly enhances the toughness. These elements form carbides within the steel matrix, improving toughness. 2. Heat treatment: Proper heat treatment greatly improves toughness. Quenching and tempering are commonly used processes. Quenching rapidly cools the steel, resulting in a hardened structure. Tempering involves reheating and slow cooling to relieve internal stresses and increase toughness. 3. Controlled cooling rates: Optimizing toughness is possible by controlling the cooling rate during heat treatment. Slow cooling allows for a more uniform microstructure, leading to improved toughness. 4. Grain refinement: Refining the grain size enhances toughness. This can be achieved through hot working, controlled rolling, or adding grain refining elements like titanium or zirconium. 5. Surface treatments: Shot peening or nitriding can improve toughness. Shot peening bombards the steel surface with small metal or ceramic particles, creating compressive residual stresses that enhance toughness. Nitriding diffuses nitrogen into the surface, forming a hard and wear-resistant layer. 6. Cryogenic treatment: Subjecting the tool steel to extremely low temperatures for an extended period refines the microstructure and reduces residual stresses, improving toughness. 7. Powder metallurgy: Techniques like hot isostatic pressing or sintering can produce tool steels with improved toughness. Fine powder, high pressure, and temperature result in a more uniform and fine-grained microstructure, increasing toughness. Ultimately, the specific methods selected and combined depend on the tool steel's requirements and intended application. By carefully considering these techniques, manufacturers can enhance the toughness of tool steels for demanding special steel applications.

Q: How is special steel used in the production of engine components?: Special steel is used in the production of engine components due to its exceptional strength, durability, and resistance to heat and corrosion. It is commonly used to manufacture parts such as crankshafts, camshafts, connecting rods, and valves, which are subjected to high stress and temperature conditions. The special steel's properties enable these components to withstand the demanding operating conditions of engines, resulting in enhanced performance, reliability, and longevity.

Q: Can special steel be used in the appliance manufacturing industry?: Yes, special steel can be used in the appliance manufacturing industry. Special steels, such as stainless steel or high-strength steel, offer various advantages such as corrosion resistance, durability, and enhanced mechanical properties. These qualities make them suitable for manufacturing appliances that require high performance, such as refrigerators, ovens, or washing machines. Additionally, special steels can be customized to meet specific design requirements and can contribute to the overall aesthetic appeal of the appliances.

Q: How is high-temperature steel used in the production of furnace components?: High-temperature steel is used in the production of furnace components due to its exceptional heat resistance and strength. This type of steel can withstand extreme temperatures without losing its structural integrity, making it ideal for lining furnace walls, constructing heating elements, and manufacturing other critical parts that are exposed to intense heat.

Q: What are the main factors affecting the corrosion resistance of special steel?: The main factors affecting the corrosion resistance of special steel are the composition of the steel, the presence of alloying elements, the surface condition, the exposure environment, and the presence of protective coatings or treatments.

Q: What is the chemical composition of special steel?: Special steel is a broad term that encompasses a variety of steel alloys with specific properties and characteristics. The chemical composition of special steel can vary depending on the specific grade or type of steel being referred to. However, in general, special steel often contains higher amounts of alloying elements compared to regular carbon steel. These alloying elements can include elements such as chromium, nickel, molybdenum, vanadium, tungsten, and others. The specific combination and proportion of these alloying elements determine the unique properties of special steel, such as increased strength, enhanced corrosion resistance, improved heat resistance, or better wear resistance. For example, some common types of special steel include stainless steel, which typically contains high amounts of chromium and nickel, providing excellent corrosion resistance; tool steel, which has high carbon content and often contains other elements like vanadium or tungsten, making it suitable for cutting, drilling, or shaping tools; and high-speed steel, which contains elements like molybdenum, cobalt, or tungsten, giving it exceptional hardness and heat resistance for use in cutting tools or drills. In summary, the chemical composition of special steel varies depending on the specific type or grade, but it generally includes higher amounts of alloying elements to achieve desired properties such as strength, corrosion resistance, heat resistance, or wear resistance.

Q: How is tool and die steel used in the manufacturing of molds and dies?: Tool and die steel is essential in the manufacturing of molds and dies as it provides the required strength, hardness, and durability to withstand the high pressures and temperatures involved in the molding process. It is used to create the core and cavity sections of molds as well as the various components of dies. The steel is carefully selected based on its specific properties to ensure optimal performance and longevity in the production of molds and dies.

Q: What are the different corrosion protection methods used for special steel?: To ensure the durability and longevity of special steel, various methods are employed for corrosion protection. These methods encompass: 1. Coatings: The application of diverse coatings, including paint, epoxy, or zinc, creates a protective layer on the steel surface. Such coatings function as barriers, preventing direct contact between moisture, corrosive elements, and the steel. 2. Galvanization: By coating the steel with a layer of zinc through the process of galvanization, a sacrificial barrier is formed wherein the zinc corrodes instead of the steel. Galvanized steel is commonly utilized in outdoor applications such as fences, poles, and roofing. 3. Stainless steel: Special steel can be manufactured using stainless steel, which contains a high percentage of chromium. The presence of chromium results in the formation of a passive layer on the steel's surface, endowing it with excellent corrosion resistance. Stainless steel finds wide usage in industries like construction, food processing, and medical equipment. 4. Cathodic protection: This method involves the creation of an electrical current or the utilization of sacrificial anodes to protect the steel. By introducing a more reactive metal (sacrificial anode) or applying an electrical current, corrosion is minimized as the reactive metal corrodes instead of the steel. 5. Alloying: Modifying the steel's composition by incorporating elements like nickel, molybdenum, or copper can enhance its resistance to corrosion. These alloying elements form a protective layer on the surface, rendering the steel more resistant to rust and other forms of corrosion. 6. Passivation: Passivation is a chemical process that eliminates free iron from the steel's surface, leading to the formation of a protective oxide layer. This layer acts as a barrier against corrosion, augmenting the steel's resistance to rust and other forms of corrosion. 7. Proper maintenance: Regular inspection, cleaning, and maintenance of special steel play a vital role in preventing corrosion. The removal of dirt, debris, and other contaminants from the steel's surface aids in preserving its protective coatings and averting corrosion. It is crucial to select the appropriate corrosion protection method based on the specific application and environmental conditions to ensure the long-term performance and durability of special steel.

Q: What are the different nuclear grades of special steel?: The different nuclear grades of special steel refer to specific types of steel that are used in the nuclear industry to meet stringent requirements for safety, reliability, and performance. These grades are designed to withstand the harsh conditions of nuclear power plants and other nuclear facilities. There are several nuclear grades of special steel, each with its own unique characteristics and applications. Some of the commonly used grades include: 1. 304/304L stainless steel: This grade is widely used in nuclear applications due to its excellent corrosion resistance and high strength at elevated temperatures. It is often used in the construction of reactor vessels, heat exchangers, and piping systems. 2. 316/316L stainless steel: Similar to 304/304L, this grade offers superior corrosion resistance and high creep strength. It is commonly used in the construction of components exposed to corrosive environments, such as coolant systems, steam generators, and fuel handling equipment. 3. 321 stainless steel: This grade contains titanium, which stabilizes the steel against sensitization during welding. It is often used in nuclear applications where welding is required, such as piping systems and pressure vessels. 4. Duplex stainless steels: These grades, such as 2205 and 2507, offer a combination of high strength and excellent corrosion resistance. They are commonly used in nuclear applications involving highly corrosive environments, such as seawater-cooled systems and containment structures. 5. Low alloy steels: These steels, such as A533B and A508, are used in the construction of reactor pressure vessels due to their high strength and toughness. These grades are specifically designed to withstand the extreme conditions within a nuclear reactor. It is important to note that the selection of the appropriate nuclear grade of special steel depends on the specific application, considering factors such as temperature, pressure, corrosion resistance, and mechanical properties. These grades undergo rigorous testing and quality control measures to ensure their suitability for use in the nuclear industry.

Q: How does special steel contribute to the automotive engine industry?: Special steel plays a crucial role in the automotive engine industry by offering enhanced performance, durability, and efficiency. It is used to manufacture various engine components such as crankshafts, camshafts, connecting rods, and valves, which are subjected to high stress and temperature. The use of special steel ensures these components can withstand the demanding conditions and provide better power, fuel efficiency, and overall engine performance. Additionally, special steel enables engine manufacturers to reduce weight while maintaining structural integrity, contributing to improved fuel economy and reduced emissions.

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