Alloy AISI 4140 Material Steel Round Bars
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Alloy AISI 4140 Material Steel Round Bars
Product Description:
1.Dia:16-320mm
2.Length:4-12m(can be customized)
3.Proceesing :EAF+LF+VD
4.Inspection: Ultrasonic according to the test standards:SEP1921-84,GR.3 CLASS C/C
5. Packing situation: standard seaworthy packing or as customer required
6. Delivery time: 7 days for stock and 30 days for new production
7. Payment: T/T, or L/C at sight.
Chemical Composition:
Grade | C | Si | Mn | P | S | Cr | Mo |
42CrMo4 | 0.38-0.45 | 0.17-0.37 | 0.40-0.70 | ≤0.035 | ≤0.035 | 0.90-1.20 | 0.15-0.25 |
1.7225 | 0.38-0.45 | ≤0.40 | 0.60-0.90 | ≤0.025 | ≤0.035 | 0.90-1.20 | 0.15-0.30 |
4140 | 0.38-0.43 | 0.15-0.35 | 0.75-1.00 | ≤0.035 | ≤0.040 | 0.80-1.10 | 0.15-0.25 |
Aplication:
(1) Generally used for producing the important parts with high strength and good plastic.
(2) After nitrogen treatment, used for producing the important parts with special performance
requirements, such as shafts, gears, fasteners, bolt of large dia steamer etc.
Alloy steel bars are highly appreciated for its striking fetures such as resilient, fine finish, optimum tensile strength and corrosion resistant. We fabricate these products using optimum quality materials based on well versatile technology in complying with the quality standards. These products are widely used in various construction, automobiles and mechanical parts.
Product Show:
- Q: How does special steel perform under high-temperature oxidation?
- Special steel is engineered to exhibit outstanding performance when exposed to high temperatures, particularly in terms of oxidation. It is fabricated utilizing alloys that possess a significant quantity of chromium, which generates a shielding chromium oxide layer on the steel's surface once confronted with elevated temperatures. This chromium oxide layer acts as a barrier, thwarting further oxidation and safeguarding the steel against corrosion. The generous amount of chromium present in special steel also heightens its resistance to scaling, which refers to the development of thick layers of oxide on the steel's surface. Scaling can compromise the steel's integrity and result in failure when subjected to high temperatures. Nonetheless, special steel retains its structural soundness even at elevated temperatures due to its capacity to resist scaling. Apart from chromium, special steel may contain additional alloying elements like nickel, molybdenum, and vanadium. These elements contribute to the steel's resistance to high-temperature oxidation by further augmenting the formation and stability of the protective oxide layer. Overall, special steel exhibits exceptional performance under high-temperature oxidation circumstances. Its distinctive composition and alloying elements enable it to establish a protective oxide layer, resist scaling, and retain its strength and integrity even at elevated temperatures. As a result, it is extensively utilized in various industries that involve high-temperature applications, including power generation, aerospace, and petrochemical industries.
- Q: Can special steel be used for making mining equipment?
- Yes, special steel can be used for making mining equipment. Special steel, such as high-strength and wear-resistant alloys, is commonly utilized in the manufacturing of mining equipment due to its durability and ability to withstand harsh mining conditions. It offers superior resistance to abrasion, impact, and corrosion, making it suitable for applications like excavators, drill bits, crushers, and other machinery used in the mining industry.
- Q: What are the main environmental impacts of special steel production?
- The main environmental impacts of special steel production include high energy consumption, significant greenhouse gas emissions, and the generation of large amounts of air and water pollution. The production process requires immense amounts of energy, primarily from fossil fuels, leading to the release of carbon dioxide and other greenhouse gases, contributing to climate change. Additionally, the production of special steel involves the use of various chemicals and the generation of hazardous waste, which can contaminate air and water sources, harming ecosystems and human health. Efforts are being made to mitigate these impacts through improved technologies and practices, such as energy efficiency measures and waste management systems, to minimize the environmental footprint of special steel production.
- Q: How does special steel contribute to the machinability of products?
- Special steel plays a significant role in enhancing the machinability of products. Machinability refers to the ease with which a material can be cut, drilled, or shaped using various machining processes. Special steel, also known as alloy steel, is specifically formulated to contain certain elements that improve its machinability characteristics. One key aspect of special steel that contributes to its enhanced machinability is its composition. By incorporating alloying elements such as manganese, sulfur, and phosphorus, special steel achieves improved machinability compared to regular carbon steel. These elements help in reducing friction during machining operations, resulting in reduced tool wear and extended tool life. Additionally, the presence of these elements facilitates the formation of smaller and more manageable chips during cutting, making it easier to control the machining process and maintain dimensional accuracy. Moreover, special steel often undergoes specific heat treatment processes, such as annealing or quenching and tempering, to further enhance its machinability. Heat treatment improves the steel's microstructure, making it more uniform and refined, which in turn improves its machinability characteristics. Heat-treated special steel exhibits better hardness, toughness, and resistance to wear, all of which are crucial for achieving high-quality machined products. Furthermore, special steel can be engineered to possess other desirable properties, such as high strength, corrosion resistance, or heat resistance, while still maintaining good machinability. This versatility allows manufacturers to select the most suitable special steel for their specific machining applications, ensuring optimal performance and productivity. In conclusion, special steel significantly contributes to the machinability of products due to its specific composition, heat treatment processes, and versatile properties. By utilizing special steel, manufacturers can achieve better machining performance, improved tool life, and higher dimensional accuracy, ultimately leading to superior quality products.
- Q: How does special steel contribute to reducing weight in applications?
- There are several ways in which special steel can help to reduce weight in applications. Firstly, special steel alloys can be designed to have high strength-to-weight ratios. This means that they can provide the same level of strength and performance as other materials, such as traditional steel or aluminum, but with less weight. By substituting special steel for heavier materials, manufacturers can decrease the overall weight of the application without compromising its structural integrity. Furthermore, special steel can be manufactured with enhanced fatigue resistance and durability properties. This allows for the use of thinner and lighter sections without sacrificing strength. This is particularly crucial in industries where weight reduction is crucial, such as automotive and aerospace, as it enables the production of lighter vehicles or aircraft. As a result, fuel efficiency is improved and emissions are reduced. Moreover, special steel can also contribute to weight reduction through its versatility in manufacturing processes. It can be easily formed, shaped, and welded, allowing for the creation of complex and lightweight structures. This flexibility in fabrication methods empowers engineers to optimize the design and maximize weight savings by utilizing special steel in innovative ways. In conclusion, special steel aids in reducing weight in applications by offering high strength-to-weight ratios, improved fatigue resistance, and durability. Additionally, it provides versatility in manufacturing processes. These attributes make special steel an ideal choice for industries seeking weight reduction, ultimately resulting in enhanced performance, efficiency, and sustainability.
- Q: What are the different electrical grades of special steel?
- There exist various specialized types of steel that possess exceptional electrical properties. These types include: 1. Silicon Electrical Steel: This particular grade of steel contains a significant silicon content, typically ranging from 3% to 4%. The inclusion of silicon aids in minimizing eddy current losses and enhancing the steel's magnetic properties. Consequently, it becomes an ideal choice for utilization in electrical motors and transformers. 2. Stainless Electrical Steel: This specialized steel grade is crafted from stainless steel alloys, renowned for their remarkable resistance to corrosion. Additionally, stainless electrical steel exhibits low electrical resistivity and high thermal conductivity, making it well-suited for electrical connectors, terminals, and other components that necessitate excellent electrical conductivity and resistance to oxidation. 3. Tool Steel for Electrical Purposes: Tool steels are commonly employed in the production of various tools and dies. Certain tool steels are specifically engineered to possess enhanced electrical properties, including heightened electrical conductivity and resistance to heat. These grades are frequently utilized in the fabrication of electrical contacts, switches, and other electrical components that require exceptional resistance to wear and superior electrical performance. 4. Copper-Clad Steel for Electrical Applications: This specialized steel grade is created by bonding a layer of copper to a steel core. The copper layer offers outstanding electrical conductivity, while the steel core provides durability and strength. Electrical copper-clad steel is commonly employed in applications where high electrical conductivity is imperative, such as power transmission lines and grounding systems. In conclusion, the diverse electrical grades of specialized steel offer a variety of electrical properties to meet the specific requirements of various electrical applications. These grades are meticulously engineered to deliver optimal electrical performance, durability, and resistance to corrosion and wear.
- Q: What are the different nitriding techniques used for special steel?
- There are several nitriding techniques used for special steel, including gas nitriding, salt bath nitriding, plasma nitriding, and ion nitriding. These techniques involve exposing the steel to a nitrogen-rich environment, which allows nitrogen atoms to diffuse into the surface of the steel, forming a hardened layer. Each technique has its own advantages and is suitable for specific applications based on factors such as the steel composition, desired hardness, and surface finish requirements.
- Q: What are the different methods of preventing hydrogen-induced cracking in special steel?
- There are several methods to prevent hydrogen-induced cracking in special steel. One common approach is to use preheating techniques, which involve heating the steel before welding to reduce hydrogen levels and minimize the risk of cracking. Another method is to employ low-hydrogen welding consumables, such as low-hydrogen electrodes or filler wires, which have reduced hydrogen content and can help prevent cracking. Additionally, post-weld heat treatments, such as stress relieving or tempering, can be implemented to remove residual hydrogen and relieve stress in the steel, reducing the chances of cracking. Proper cleaning and preparation of the steel surface, as well as controlling the welding parameters, are also crucial in preventing hydrogen-induced cracking.
- Q: How is special steel used in the defense supply chain?
- Special steel is used in the defense supply chain for a variety of applications, including the manufacturing of military vehicles, weaponry, and protective gear. Its high strength, durability, and resistance to extreme conditions make it ideal for ensuring the safety and effectiveness of defense equipment in combat situations.
- Q: How does special steel contribute to the construction equipment industry?
- Special steel contributes to the construction equipment industry by providing high strength, durability, and resistance to wear and tear. This type of steel is specifically designed to withstand harsh working conditions, such as heavy loads, extreme temperatures, and abrasive materials. Special steel components, such as gears, bearings, and cutting edges, improve the performance and lifespan of construction equipment, enabling them to operate efficiently and reliably. Additionally, special steel alloys offer flexibility in design and manufacturing, allowing for the production of lighter and more fuel-efficient machines, ultimately contributing to increased productivity and cost-effectiveness in the construction industry.
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Alloy AISI 4140 Material Steel Round Bars
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 50000 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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