Grade AISI 4340 CNBM Forged Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Grade AISI 4340 CNBM Forged Steel Round Bar
Name | SAE4340 Carbon Steel Round Bar |
Shape | Round Bar/Square Bar/Flat Bar/Plate/Wire |
Standard | GB/ASTM/SAE/AISI/DIN/JIS/EN/BS |
Surface Treatment: | Black/Peeling/Polished/Machined |
Delivery Condition: | Hot Rolled or Forged/Peeled or Black Surface |
Test | SGS/UT 100% Elements Testing |
Certificate: | ISO/Mill Certificate |
Service: | 24 hours online service / |
more than 20 years trading and manufacture | |
Quality Assurance: | the third party inspection, such as SGS, BV, TUV…etc. is acceptable |
Packaging Details: | seaworthy packaging or as per customer's packing instruction |
Machine Capability
Tensile strength (N/mm2Mpa): >=980(100)
Elongation: >=12
Yield strength: >=835(85)
Hardness:( HBS 100/3000)<=269
Reduction of area:>=55
Akv(J)>=78 akv(J/cm2):>=98(10)
Chemical Composition (%):
C | Si | Mn | S | P | Cr | Ni | Cu | Mo |
0.37-0.44 | 0.17-0.37 | 0.40-0.80 | 0.025(max) | 0.025(max) | 0.60-0.90 | 1.25-1.65 | 0.025(max) | 0.15-0.25 |
Packaging & Delivery
Packaging Detail | Sea worthy packing /as per customer's packing instruction |
Delivery Detail | 15 ~ 40 days after receiving the deposit |
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Workshop
FAQ
Are you a trading company or manufacturer? | Manufacturer |
What’s the MOQ? | 3 metric ton |
What’s your delivery time? | 15-35 days after downpayment received |
Do you Accept OEM service? | Yes |
what’s your delivery terms? | FOB/CFR/CIF |
What's the Payment Terms? | 30% as deposit,70% before shipment by T/T |
Western Union acceptable for small amount. | |
L/C acceptable for large amount. | |
Scrow ,Paybal,Alipay are also ok | |
Why choose us? | Chose happens because of quality, then price, We can give you both. |
Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals. | |
What's your available port of Shipment? | Main Port, China |
What’s your featured services? | Our service formula: good quality+ good price+ good service=customer's trust |
Where are your Market? | Covering more than 160 countries in the world |
- Q: What are the different surface treatment techniques for special steel?
- There are several different surface treatment techniques for special steel, including: 1. Electroplating: This technique involves the deposition of a thin layer of metal onto the surface of the steel through an electrochemical process. It helps enhance corrosion resistance, improve appearance, and provide a protective coating. 2. Nitriding: Nitriding involves the diffusion of nitrogen into the surface of the steel, resulting in a hardened and wear-resistant layer. This technique improves the material's strength, toughness, and resistance to fatigue. 3. Carburizing: Carburizing is a heat treatment process that introduces carbon into the steel surface, creating a hard and wear-resistant layer. It enhances the material's strength, hardness, and resistance to wear. 4. Coating: Various coating techniques, such as thermal spraying, chemical vapor deposition, and physical vapor deposition, can be employed to apply a protective layer onto the steel surface. These coatings can offer improved corrosion resistance, wear resistance, and thermal stability. 5. Shot peening: Shot peening involves bombarding the steel surface with small metal or ceramic particles, which induce compressive stresses and improve fatigue resistance. It also helps to reduce stress corrosion cracking and enhance the material's mechanical properties. These surface treatment techniques play a crucial role in improving the performance, durability, and overall quality of special steel in different industrial applications.
- Q: What are the main applications of special steel in the power generation sector?
- Special steel is widely used in the power generation sector for various applications. Some of the main applications include turbine components, such as blades and rotors, which require high strength and temperature resistance to withstand the harsh operating conditions. Special steel is also used in the construction of boilers and pressure vessels, where its corrosion resistance and high tensile strength are essential. Additionally, special steel is utilized in the manufacturing of power transmission infrastructure, such as transmission lines and transformers, to ensure efficient and reliable electricity transfer. Overall, special steel plays a crucial role in enhancing the performance and longevity of power generation equipment in the industry.
- Q: How does special steel contribute to the heat resistance of products?
- The heat resistance of products is enhanced by special steel, which possesses superior mechanical properties that enable it to withstand high temperatures without deforming or compromising its structural integrity. The unique composition and manufacturing process of special steel result in improved heat resistance, making it an ideal material for applications exposed to extreme heat conditions. Compared to standard steel, special steel is designed with a high melting point, enabling it to endure higher temperatures. This is achieved through the inclusion of alloying elements like chromium, nickel, molybdenum, or vanadium, which enhance the steel's ability to withstand heat. These elements create stable oxide layers on the steel's surface, acting as a barrier against oxidation and preventing strength loss or brittleness when subjected to high temperatures. Moreover, special steel often undergoes heat-resistant coatings or specialized heat treatment processes to further enhance its heat resistance. These treatments, such as quenching and tempering, annealing, or precipitation hardening, modify the steel's microstructure, improving its resistance to thermal fatigue, creep, and thermal shock. The heat resistance provided by special steel allows for the production of products suitable for demanding environments, including aerospace, automotive, power generation, and industrial applications. In the aerospace industry, for example, special steel is employed in the manufacturing of turbine blades that face exceptionally high temperatures in jet engines. In the automotive industry, it is used for producing exhaust systems and engine components that must withstand intense heat from combustion processes. To summarize, special steel enhances the heat resistance of products by providing a higher melting point, improved oxidation resistance, and enhanced mechanical properties, ensuring their structural integrity and functionality even in extreme heat conditions. This makes special steel an indispensable material for industries seeking durable and reliable solutions that can withstand high temperatures.
- Q: Can special steel be used in the production of medical implants?
- Yes, special steel can be used in the production of medical implants. Special steel alloys such as stainless steel or titanium alloys are commonly used in the manufacturing of medical implants due to their high strength, corrosion resistance, and biocompatibility properties. These materials are carefully selected to ensure compatibility with the human body and to promote successful implantation and long-term functionality.
- Q: What are the different corrosion-resistant grades of special steel?
- There are several corrosion-resistant grades of special steel that are commonly used in various industries. These grades are specifically designed to resist corrosion and maintain their structural integrity in harsh environments. Some of the different corrosion-resistant grades of special steel are: 1. Stainless Steel: Stainless steel is one of the most popular corrosion-resistant grades and is widely used in various applications. It contains a minimum of 10.5% chromium, which forms a protective passive oxide layer on the surface, preventing corrosion. There are different types of stainless steel, such as austenitic, ferritic, and martensitic, each with varying levels of corrosion resistance. 2. Duplex Stainless Steel: Duplex stainless steel is a combination of austenitic and ferritic stainless steels, offering superior corrosion resistance compared to conventional stainless steel grades. It has a high chromium content, along with other alloying elements like molybdenum and nitrogen, which enhance its resistance to pitting, crevice corrosion, and stress corrosion cracking. 3. Super Duplex Stainless Steel: Super duplex stainless steel is an even higher corrosion-resistant grade than duplex stainless steel. It has a higher chromium and molybdenum content, providing excellent resistance to highly corrosive environments, such as seawater, chemicals, and acids. Super duplex stainless steel is commonly used in offshore oil and gas industries. 4. Nickel Alloys: Nickel alloys, such as Inconel and Hastelloy, are highly corrosion-resistant grades of special steel. These alloys have a high nickel content, along with other elements like chromium and molybdenum, which make them resistant to a wide range of corrosive environments, including high-temperature and acidic conditions. 5. Titanium Alloys: Titanium alloys are known for their exceptional corrosion resistance, especially in aggressive media, such as seawater and chemical processing environments. These alloys have a low density, high strength, and superior resistance to pitting, crevice corrosion, and stress corrosion cracking. 6. Aluminum Alloys: Certain aluminum alloys, such as 5052 and 6061, are also corrosion-resistant grades of special steel. These alloys have a protective oxide layer that forms on the surface, providing excellent resistance to atmospheric corrosion. Aluminum alloys are commonly used in marine and aerospace applications. These are just a few examples of the different corrosion-resistant grades of special steel. The selection of the appropriate grade depends on the specific corrosive environment, temperature, mechanical properties required, and other factors related to the intended application.
- Q: What are the different types of high-strength steel?
- There are several types of high-strength steel, including high-strength low-alloy (HSLA) steel, ultra-high-strength steel (UHSS), dual-phase (DP) steel, and transformation-induced plasticity (TRIP) steel. Each type has unique properties and is used in various industries for applications that require exceptional strength and durability.
- Q: What are the applications of special steel in the power generation supply chain?
- Special steel plays a crucial role in the power generation supply chain, specifically in applications where high strength, corrosion resistance, and temperature resistance are required. It is extensively used in the construction of power plant components such as boilers, turbines, and generators, as well as transmission lines and distribution systems. Special steel ensures the reliability and efficiency of power generation equipment, enabling it to withstand harsh operating conditions and maintain long-term performance.
- Q: What are the different types of bearing steel?
- There are several different types of bearing steel, including high-carbon chromium steel, high-carbon chromium-molybdenum steel, and case-hardened steel.
- Q: What are the main applications of special steel in the mining transportation?
- Special steel has various applications in the mining transportation sector. It is commonly used in the construction of heavy-duty machinery and equipment such as excavators, dump trucks, and conveyor systems. Special steel's high strength and durability make it ideal for withstanding the harsh conditions and heavy loads encountered in mining operations. Additionally, its resistance to corrosion and wear ensures the longevity of the equipment, reducing maintenance costs and downtime. Overall, special steel plays a crucial role in enhancing the performance and efficiency of mining transportation machinery.
- Q: What industries commonly use special steel?
- Special steel, also known as alloy steel, is widely used in various industries due to its exceptional properties and performance characteristics. Some of the industries that commonly utilize special steel include: 1. Automotive Industry: Special steel is extensively used in the manufacturing of components for automobiles, such as crankshafts, camshafts, gears, and axles. Its high strength, durability, and excellent heat resistance make it ideal for withstanding the demanding conditions of the automotive sector. 2. Aerospace Industry: Special steel finds applications in the aerospace industry for manufacturing critical components like turbine blades, landing gear, and structural parts. Its ability to withstand high temperatures and maintain structural integrity under extreme conditions is crucial for aerospace applications. 3. Oil and Gas Industry: Special steel is vital in the oil and gas sector for applications like drill bits, valves, pipelines, and offshore platform components. Its corrosion resistance, high strength, and resistance to extreme temperatures and pressures make it suitable for these demanding environments. 4. Construction Industry: In the construction industry, special steel is used in the fabrication of structural components, reinforcement bars, and high-rise building frameworks. Its high tensile strength, toughness, and resistance to wear and tear ensure the safety and stability of the structures. 5. Tool and Die Industry: Special steel is widely used in the tool and die sector for manufacturing cutting tools, molds, dies, and various machine components. Its ability to retain sharpness, resist deformation, and withstand high pressures and temperatures make it indispensable for these applications. 6. Energy Industry: Special steel is extensively used in power generation plants, including nuclear, thermal, and renewable energy facilities. It is used for manufacturing turbines, boilers, heat exchangers, and other critical components due to its high temperature and corrosion resistance properties. 7. Medical Industry: Special steel plays a crucial role in the medical field, especially in surgical instruments and implants. Its biocompatibility, strength, and resistance to corrosion make it suitable for applications like joint replacements, dental instruments, and surgical cutting tools. 8. Manufacturing Industry: Special steel is widely used in various manufacturing processes, such as machining, forging, and casting. It is employed in the production of machine tools, industrial equipment, and heavy machinery components due to its high strength, toughness, and versatility. These are just a few examples of the industries that commonly utilize special steel. Its unique properties make it an essential material for a wide range of applications, where strength, durability, heat resistance, and corrosion resistance are critical factors.
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Grade AISI 4340 CNBM Forged Steel Round Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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