Special Steel A36/A992 Round Solid Steel Bar

Special Steel A36/A992 Round Solid Steel Bar System 1

Special Steel A36/A992 Round Solid Steel 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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Alloy steel International Table:

Mark	China	USA	UK	Japan	France	Germany
structural alloy steel	GB	ASTM	BS	JIS	NF	DIN
	20Mn2	13201321	150M19	SMn420		20Mn5
	30Mn2	1330	150M28	SMn433H	32M5	30Mn5
	35Mn2	1335	150M36	SMn438(H)	35M5	36Mn5
	40Mn2	1340		SMn443	40M5
	45Mn2	1345		SMn443		46Mn7
	50Mn2				~55M5
	20MnV					20MnV6
	35SiMn		En46			37MnSi5
	42SiMn		En46			46MnSi4
	40B	TS14B35
	45B	50B46H
	40MnB	50B40
	45MnB	50B44
	15Cr	5115	523M15	SCr415(H)	12C3	15Cr3
	20Cr	5120	527A19	SCr420H	18C3	20Cr4
	30Cr	5130	530A30	SCr430		28Cr4
	35Cr	5132	530A36	SCr430(H)	32C4	34Cr4
	40Cr	5140	520M40	SCr440	42C4	41Cr4
	45Cr	51455147	534A99	SCr445	45C4
	38CrSi

	12CrMo		620Cr.B		12CD4	13CrMo44
	15CrMo	A-387Cr . B	1653	STC42	12CD4	16CrMo44
				STT42
				STB42
	20CrMo	41194118	CDS12	SCT42	18CD4	20CrMo44
			CDS110	STT42
				STB42
	25CrMo	4125	En20A		25CD4	25CrMo4
	30CrMo	4130	1717COS110	SCM420	30CD4
	42CrMo	4140	708A42		42CD4	42CrMo4
			708M40
	35CrMo	4135	708A37	SCM3	35CD4	34CrMo4
	12CrMoV
	12Cr1MoV					13CrMoV42
	25Cr2Mo1VA
	20CrV	6120				22CrV4
	40CrV	6140				42CrV6
	50CrVA	6150	735A30	SUP10	50CV4	50CrV4
	15CrMn
	20CrMn	5152	527A60	SUP9
	30CrMnSiA
	40CrNi	3140H	640M40	SNC236		40NiCr6
	20CrNi3A	3316			20NC11	20NiCr14
	30CrNi3A	3325	653M31	SNC631H		28NiCr10
		3330		SNC631
	20MnMoB	80B20
	38CrMoAlA		905M39	SACM645	40CAD6.12	41CrAlMo07
	40CrNiMoA	4340	871M40	SNCM439		40NiCrMo22

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Special Steel A36/A992 Round Solid Steel 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 different welding techniques used for special steel?: There are several welding techniques used for special steel, including gas metal arc welding (GMAW), shielded metal arc welding (SMAW), flux-cored arc welding (FCAW), and tungsten inert gas welding (TIG). These techniques are chosen based on factors such as the type of special steel, its thickness, and the desired weld characteristics. Each technique has its own advantages and limitations, and the selection depends on the specific requirements of the welding application.

Q: How does special steel perform in terms of corrosion resistance in acidic environments?: Special steel, also known as stainless steel, is highly regarded for its exceptional corrosion resistance in various environments, including acidic conditions. It contains a minimum of 10.5% chromium, which forms a protective layer on the surface of the steel known as a passive film. This passive film acts as a barrier, preventing the steel from coming into direct contact with the corrosive elements present in acidic environments. The chromium content in special steel enables it to react with oxygen in the atmosphere, creating a thin and transparent oxide layer. This oxide layer is highly stable and self-healing, making stainless steel highly resistant to corrosion caused by acids. The presence of other alloying elements such as nickel and molybdenum further enhances its resistance to acidic corrosion. In acidic environments, special steel exhibits excellent resistance to both general corrosion and localized corrosion, such as pitting and crevice corrosion. It can withstand a wide range of acid concentrations and temperatures, making it suitable for applications in industries such as chemical processing, pharmaceuticals, and marine environments where exposure to acidic solutions is common. It is important to note that the performance of special steel in acidic environments may vary depending on the specific grade and composition of the steel. Different grades of stainless steel have varying levels of alloying elements, which can influence their corrosion resistance properties. Therefore, it is essential to select the appropriate grade of special steel that matches the specific acidic environment to ensure optimal performance and longevity.

Q: How does surface treatment affect the performance of special steel?: The performance of special steel is greatly enhanced by surface treatment, which serves the essential purpose of altering the steel's surface properties to meet specific requirements and improve its performance in various applications. One notable effect of surface treatment on special steel is the increased resistance to corrosion. Coatings or treatments such as galvanization, electroplating, or passivation are applied to make the steel's surface more resilient against the damaging effects of moisture, chemicals, and other corrosive agents. This is particularly crucial in industries like construction, automotive, or marine, where steel is subjected to harsh environments. Surface treatment also has an impact on the wear resistance of special steel. Through processes like carburizing, nitriding, or boriding, a thin layer of hard and wear-resistant material is formed on the surface of the steel. This significantly enhances its ability to withstand friction, abrasion, and mechanical stress, making it suitable for applications involving heavy machinery, cutting tools, or bearings. Moreover, surface treatment can enhance the aesthetic appeal of special steel. Techniques such as polishing, grinding, or coating can be employed to improve the appearance of the steel, making it more visually pleasing for architectural or decorative purposes. Another crucial aspect affected by surface treatment is the adhesion properties of the steel. By modifying the surface through processes like shot peening or surface etching, the steel becomes more receptive to adhesives, paints, or coatings. This improves the bond strength between the steel and other materials, making it suitable for applications where adhesion is critical, such as in the aerospace or electronics industries. To summarize, surface treatment has a significant impact on the performance of special steel. It enhances corrosion resistance, wear resistance, adhesion properties, and aesthetic appeal. Manufacturers can maximize the steel's performance and extend its lifespan by selecting the appropriate surface treatment techniques to tailor its surface properties to meet specific application requirements.

Q: How is case-hardening steel used in the manufacturing of gears?: Case-hardening steel is used in the manufacturing of gears to enhance their durability and strength. The process involves heating the steel to a high temperature and then rapidly cooling it to create a hard outer layer, known as the case, while maintaining a relatively softer core. This hardened surface provides resistance to wear, abrasion, and fatigue, allowing the gears to withstand heavy loads and prolonged use. Additionally, case-hardening steel also improves the gear's ability to withstand impact and retain its shape, ensuring efficient and reliable performance in various mechanical applications.

Q: What are the environmental impacts of special steel production?: The environmental impacts of special steel production include emissions of greenhouse gases, such as carbon dioxide and methane, which contribute to climate change. The process also generates air pollutants, including particulate matter and sulfur dioxide, which can harm human health and contribute to air pollution. Additionally, the extraction of raw materials for special steel production can lead to habitat destruction and biodiversity loss. Proper management and adoption of more sustainable practices, such as energy efficiency and waste reduction, can help mitigate these impacts.

Q: What are the different methods of preventing stress relaxation in special steel?: Preventing stress relaxation in special steel can be achieved through various methods. One effective approach is the utilization of heat treatment, specifically by employing the annealing process. Annealing consists of heating the steel to a specific temperature and gradually cooling it down. This technique successfully alleviates internal stresses within the steel, thus preventing stress relaxation. Another effective method involves employing stress relieving techniques. These techniques necessitate the controlled application of stress to the steel, typically through cold working or mechanical deformation. By doing so, the steel can effectively release any accumulated stress and avoid relaxation over time. Furthermore, incorporating alloying elements into the steel can also aid in preventing stress relaxation. Certain alloying elements, such as molybdenum and chromium, enhance the steel's strength and stability, thereby improving its resistance to stress relaxation. Lastly, meticulous design and engineering of components also contribute to the prevention of stress relaxation. Engineers can minimize the risk of stress relaxation in special steel applications by considering factors such as load distribution, material thickness, and stress concentration points. In conclusion, a combination of heat treatment, stress relieving techniques, alloying elements, and thoughtful design can be employed to effectively prevent stress relaxation in special steel.

Q: How is maraging steel used in the production of rocket and missile components?: Maraging steel is utilized in the manufacturing of rocket and missile components due to its exceptional strength, toughness, and resistance to fatigue and stress. Its unique properties make it ideal for critical parts such as pressure vessels, casings, nozzles, and structural elements, where high-performance materials are required to withstand extreme conditions during launch and flight. Maraging steel's ability to maintain its integrity under intense heat, pressure, and vibrations makes it a crucial material for ensuring the reliability and safety of rocket and missile systems.

Q: What are the different surface cleaning methods used for special steel?: There are several surface cleaning methods that can be used for special steel, depending on the specific requirements and the level of cleanliness desired. Some of the commonly used methods include: 1. Mechanical Cleaning: This method involves the use of abrasive materials or tools to physically remove dirt, rust, and other contaminants from the surface of the steel. It can be done through processes such as sanding, wire brushing, or abrasive blasting. 2. Chemical Cleaning: Chemical cleaning involves the use of chemical agents to dissolve or loosen dirt, grease, oil, or rust from the surface of the steel. Different types of chemicals can be used depending on the type and severity of the contaminants. Acid pickling is one such method that involves immersing the steel in an acid solution to remove scale and rust. 3. High-pressure Water Cleaning: This method utilizes the force of high-pressure water jets to remove dirt, grease, and other contaminants from the surface of the steel. It is effective in removing loose particles and can be used as a pre-cleaning step before other surface preparation methods. 4. Ultrasonic Cleaning: Ultrasonic cleaning is a non-abrasive method that uses high-frequency sound waves to create microscopic bubbles in a cleaning solution. These bubbles implode upon contact with the surface of the steel, effectively removing contaminants from hard-to-reach areas. 5. Electrochemical Cleaning: This method involves passing an electric current through a cleaning solution or electrolyte to facilitate the removal of contaminants from the steel surface. It is useful in removing rust and restoring the steel's appearance. 6. Thermal Cleaning: Thermal cleaning methods, such as flame cleaning or heat treatment, involve subjecting the steel to high temperatures to burn off organic contaminants or to induce controlled oxidation and subsequent removal of scale, rust, or other surface impurities. It is important to note that the choice of surface cleaning method depends on various factors, including the type of contaminants, the condition of the steel, the desired level of cleanliness, and the overall application requirements. A combination of different methods may be used to achieve the best results.

Q: What are the requirements for special steel used in power plants?: The requirements for special steel used in power plants are specific and stringent, given the critical role that these materials play in ensuring the safe and efficient operation of power generation facilities. Some of the key requirements for special steel in power plants include: 1. High temperature resistance: Special steel used in power plants must be able to withstand high temperatures without losing its structural integrity. This is crucial as power plants operate at elevated temperatures, especially in areas such as the combustion chamber or steam turbines. 2. Corrosion resistance: Power plants often operate in environments with high levels of moisture, chemicals, and other corrosive elements. Special steel must possess excellent corrosion resistance to prevent degradation and premature failure caused by chemical reactions or rusting. 3. Strength and toughness: As power plants generate significant amounts of energy, the components made of special steel must exhibit high strength and toughness to withstand the mechanical stresses and loads they are subjected to. This includes resistance to fatigue, creep, and stress corrosion cracking. 4. Weldability: Power plant components often require welding during fabrication or maintenance. Special steel should have good weldability to ensure strong and reliable joints that maintain the structural integrity of the overall system. 5. Low thermal expansion: Special steel used in power plants should have low thermal expansion properties to minimize the risk of thermal stress and distortion that can occur due to temperature variations during operation. This ensures dimensional stability and prevents premature failure. 6. Resistance to radiation: In some power plants, such as nuclear facilities, special steel may be exposed to radiation. Therefore, it is necessary for the steel to have good resistance to radiation damage, ensuring its long-term performance and safety. 7. Compliance with industry standards: Special steel used in power plants must meet specific industry standards and codes to ensure its quality, reliability, and safety. These may include standards such as ASTM, ASME, or ISO, among others. Overall, the requirements for special steel used in power plants are driven by the need for high temperature resistance, corrosion resistance, strength, weldability, low thermal expansion, radiation resistance, and compliance with industry standards. Meeting these requirements ensures the integrity and longevity of power plant components, contributing to the safe and efficient generation of electricity.

Q: How does special steel perform in nuclear applications?: Special steel is highly valued in nuclear applications due to its exceptional properties and performance. Nuclear reactors operate under extreme conditions, including high temperatures, high pressures, and exposure to radiation. Special steel, also known as nuclear-grade steel or reactor-grade steel, is specifically designed to withstand these demanding conditions. One of the key characteristics of special steel is its excellent strength and toughness. This allows it to resist deformation and fracture even under the intense stress and pressure found in nuclear reactors. Special steel also exhibits superior heat resistance, enabling it to maintain its structural integrity at elevated temperatures. This is crucial for preventing any potential failures or structural damage that could jeopardize the safety and efficiency of the nuclear system. Furthermore, special steel possesses remarkable resistance to corrosion and oxidation. Nuclear reactors contain highly corrosive environments due to the presence of various chemical compounds and high-temperature water or steam. The corrosion resistance of special steel ensures the longevity and reliability of the reactor components, while also minimizing the risk of radioactive material release. In addition, special steel is designed to have low neutron absorption properties. Neutron absorption can lead to the formation of unwanted isotopes, which could interfere with the nuclear reactions or contribute to the production of radioactive waste. By reducing neutron absorption, special steel helps to optimize the performance and efficiency of the nuclear system. Overall, special steel is a critical material in nuclear applications as it provides the necessary strength, heat resistance, corrosion resistance, and low neutron absorption required for safe and efficient operation of nuclear reactors. Its exceptional performance ensures the integrity of the system, minimizes the risk of accidents, and contributes to the overall sustainability of nuclear energy.

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