Special Steel AISI 4140 Round Bar Steel
- Ref Price:
-
- 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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Item specifice
Type:
Alloy Steel
Shape:
Steel Round Bar
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Thickness:
as required
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Length:
as required
Net Weight:
as required
Chemical Composition(%)
| C | Si | Mn | Cr | Mo | Ni | P | S |
| 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | 0.15-0.25 | ≤0.030 | ≤0.030 | ≤0.030 |
Standard
| GB | AISI | DIN | JIS | ISO |
| 42CrMo | 4140 | 42CrMo4 | SCM440 | 42CrMo4 |
Available Size
| Rolled round bar | φ20-120mm × L |
| Forged round bar | φ130-195mm × L |
Heat Treatment
| Item | Temperature℃ | Hardness |
| quenching | 840-880 | HRC32-34 |
| tempering | 580 | |
| quenching | 900 | HRC54-60 |
| tempering | 150-180 |
Characterstics
| The steel with high strength and toughness, hardenability is better also | |||||||
| After conditioning treatment quenching deformation of small | |||||||
| high fatigue limit and repeated impact resistance |
Applications: The steel is suitable for manufacturing requires a certain strength and toughness of large and medium-sized plastic mold
1, Your advantages?
professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale
2, Test & Certificate?
SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem
3, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
4, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
WE provides the services and support you need for every step of our cooperation. We're the business partner you can trust.
For any problem, please kindly contact us at any your convenient time.
We'll reply you in our first priority within 24 hours.
- Q:How is case-hardening steel used in the production of gears and camshafts?
- Case-hardening steel is used in the production of gears and camshafts to enhance their strength and durability. This process involves heating the steel to a high temperature and then rapidly cooling it, creating a hard outer layer while maintaining a softer, more ductile core. This hardened surface layer provides resistance to wear, abrasion, and fatigue, ensuring the gears and camshafts can handle the demands of their respective applications.
- Q:How is special steel used in the manufacturing of tools and dies?
- Due to its exceptional properties, special steel is widely utilized in the production of tools and dies. Also known as tool steel, special steel is specifically engineered to possess high hardness, wear resistance, toughness, and heat resistance. When it comes to tool manufacturing, such as drills, saws, hammers, and chisels, special steel is employed to guarantee durability and prolonged tool lifespan. The high hardness of special steel enables these tools to endure the demands of cutting, drilling, and shaping without easily becoming dull or deformed. Moreover, the wear resistance of special steel ensures that these tools can maintain their sharp cutting edges for an extended period, reducing the need for frequent sharpening or replacement. Furthermore, in the manufacture of dies used in various manufacturing processes, special steel plays a vital role. Dies are utilized to shape materials into specific forms or sizes, such as in forging, stamping, or extrusion processes. Thanks to the high toughness of special steel, dies can withstand the high pressure and impact forces involved in these processes without cracking or fracturing. Additionally, the heat resistance of special steel ensures that dies can endure the elevated temperatures generated during these operations without losing their shape or hardness. Special steel also possesses excellent machinability, making it easy to shape and form into intricate tool and die designs. This quality holds great significance in manufacturing, as it allows for the production of precise and intricate tools and dies, resulting in improved product quality and efficiency. Overall, special steel is a crucial material in the production of tools and dies due to its outstanding hardness, wear resistance, toughness, heat resistance, and machinability. These properties guarantee the durability, prolonged tool lifespan, and high performance of tools and dies, thus contributing to the overall efficiency and quality of various manufacturing processes.
- Q:How does special steel contribute to the energy aftermarket industry?
- The energy aftermarket industry heavily relies on special steel for the production and maintenance of various energy equipment and infrastructure. This type of steel is crucial as it provides durable and high-quality materials. One important application of special steel is in the manufacturing of turbine components like blades, rotors, and casings. These components are essential for power generation, especially in thermal, hydro, and wind energy systems. Special steel possesses exceptional strength, corrosion resistance, and high-temperature stability, ensuring the efficient and reliable operation of turbines even in harsh environments. Moreover, special steel plays a vital role in the construction and upkeep of oil and gas pipelines. These pipelines are responsible for transporting energy resources over long distances and require materials that can withstand extreme pressures, temperatures, and corrosive environments. Special steel grades with enhanced mechanical properties and corrosion resistance are utilized to maintain the integrity and safety of these pipelines, ultimately improving the efficiency and reliability of the energy aftermarket industry. Furthermore, special steel is used in the production of storage tanks, heat exchangers, and various other components employed in the oil, gas, and renewable energy sectors. These components are crucial for storing and processing energy resources and necessitate materials that can endure high pressures, temperature changes, and aggressive chemicals. Special steel grades provide the necessary mechanical properties and corrosion resistance, enabling safe and efficient energy storage and processing. Apart from its material properties, special steel also enables advanced manufacturing techniques like precision machining and welding. These techniques are crucial for producing complex energy equipment and components, ensuring high accuracy, reliability, and efficiency in the production process. This, in turn, leads to high-quality end products that meet the demanding requirements of the energy aftermarket industry. Overall, special steel significantly contributes to the energy aftermarket industry by providing materials with exceptional strength, corrosion resistance, and high-temperature stability. Its utilization in the manufacturing and maintenance of energy equipment and infrastructure enhances efficiency, reliability, and safety, ultimately supporting the growth and sustainability of the industry.
- Q:What are the different joining methods used for special steel?
- The different joining methods used for special steel include welding, soldering, brazing, and mechanical fastening. Welding involves melting the base metal and adding a filler material to create a strong bond. Soldering and brazing use lower temperatures to join the steel using a filler material with a lower melting point. Mechanical fastening methods include bolts, nuts, screws, and rivets, which provide a secure connection without altering the base metal's properties.
- Q:How does special steel perform in extreme temperature conditions?
- Special steel performs exceptionally well in extreme temperature conditions. It has high resistance to thermal stress, maintaining its strength and toughness even at both extremely high and low temperatures. This makes it suitable for applications in industries such as aerospace, oil and gas, and power generation, where extreme temperatures are encountered. Special steel's ability to withstand these conditions ensures optimal performance and reliability in critical environments.
- Q:What is the cost difference between regular steel and special steel?
- The cost difference between regular steel and special steel can vary depending on several factors. Special steel is typically more expensive than regular steel due to its enhanced properties and specific applications. Regular steel, also known as carbon steel, is widely available and relatively affordable. It is primarily composed of iron and carbon, with trace amounts of other elements. Regular steel is suitable for various general-purpose applications, such as construction, manufacturing, and automotive industries. On the other hand, special steel refers to a wide range of alloyed steels that are specifically engineered to possess certain desirable characteristics, such as increased strength, improved corrosion resistance, heat resistance, or enhanced machinability. These special properties make them ideal for specialized applications in industries like aerospace, defense, oil and gas, and automotive manufacturing. The cost difference between regular steel and special steel can be significant due to the additional processing steps and the use of expensive alloying elements. Special steels require precise control over the composition and manufacturing process to achieve the desired properties. This entails additional costs associated with alloying elements, heat treatment, and specialized equipment. Moreover, the demand and availability of special steel can also impact its cost. Since special steel is produced in smaller quantities and caters to specific industries, it may have a higher price tag compared to regular steel, which is produced in larger volumes. In conclusion, the cost difference between regular steel and special steel can vary based on the specific type of special steel, the desired properties, and the market demand. Special steel tends to be more expensive than regular steel due to its enhanced properties and specialized manufacturing processes required.
- Q:Can special steel be used in the production of gears?
- Yes, special steel can be used in the production of gears. Special steel, such as alloy steel or tool steel, is often preferred in gear manufacturing due to its high strength, wear resistance, and ability to withstand heavy loads and high temperatures. This steel type ensures gears have the necessary durability and performance required for various applications.
- Q:What are the main characteristics of electrical steel forgings?
- Electrical steel forgings possess several key characteristics that make them highly suitable for electrical applications. Firstly, electrical steel forgings exhibit low core loss, which refers to the amount of energy lost as heat during the magnetic cycle. This low core loss property makes electrical steel forgings ideal for transformers, motors, and generators, as it helps to enhance the overall efficiency and performance of these devices. Secondly, electrical steel forgings have high magnetic permeability, which means they can easily conduct magnetic flux. This characteristic allows for effective magnetic induction and helps to maximize the magnetic field strength in electrical components. As a result, electrical steel forgings enable efficient energy conversion and transmission. Additionally, electrical steel forgings exhibit low coercivity, meaning they require minimal magnetic field strength to magnetize and demagnetize. This property allows for faster and more precise magnetic switching in electrical devices, leading to improved performance and reduced energy losses. Furthermore, electrical steel forgings possess high electrical resistivity, which helps to minimize the flow of electrical current and reduce energy losses due to eddy currents. This characteristic is crucial in applications where electrical steel forgings are subjected to rapidly changing magnetic fields, such as power transformers. Lastly, electrical steel forgings are often treated with surface insulation coatings or coatings with high electrical resistivity to further enhance their electrical performance and prevent any short circuits or electrical leakage. In summary, the main characteristics of electrical steel forgings include low core loss, high magnetic permeability, low coercivity, high electrical resistivity, and the ability to be coated for insulation. These properties make electrical steel forgings essential for various electrical applications, ensuring efficient energy conversion, reduced losses, and reliable performance.
- Q:How does special steel contribute to improving product lifespan?
- Special steel contributes to improving product lifespan in several ways. Firstly, it offers enhanced durability and strength, allowing products to withstand heavy usage, high temperatures, and harsh environments without succumbing to wear and tear. This increased resilience helps prevent premature failure and extends the lifespan of the product. Additionally, special steel often possesses excellent corrosion resistance properties, protecting the product from rust and degradation caused by exposure to moisture or chemicals. Moreover, special steel's superior machinability and formability enable the production of complex and precise components, reducing the risk of structural flaws or defects that could compromise the product's lifespan. Overall, the use of special steel in manufacturing contributes significantly to producing long-lasting, reliable, and high-quality products.
- Q:How does the heat treatment process affect the hardness of special steel?
- The heat treatment process has a significant impact on the hardness of special steel. Heat treatment involves heating the steel to a specific temperature, holding it at that temperature for a certain period, and then cooling it at a controlled rate. This process alters the microstructure of the steel, which in turn affects its hardness. One of the most common heat treatment techniques is quenching, which involves rapid cooling of the steel. Quenching results in the formation of a hard and brittle microstructure called martensite. The rapid cooling prevents the formation of other softer microstructures, such as pearlite or ferrite, and thus increases the hardness of the steel. Another heat treatment process that affects the hardness of special steel is tempering. After quenching, the steel is often tempered to reduce its brittleness and improve its toughness. Tempering involves reheating the quenched steel to a lower temperature and then slowly cooling it. This process allows for the transformation of some of the martensite into a more ductile microstructure, such as tempered martensite or bainite. These microstructures retain some of the hardness of martensite but also provide improved toughness and resistance to fracture. In summary, the heat treatment process significantly affects the hardness of special steel. Quenching increases hardness by forming martensite, while tempering balances hardness with improved toughness. The specific heat treatment parameters, such as temperature and cooling rate, can be adjusted to achieve the desired hardness and mechanical properties for different applications of special steel.
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Special Steel AISI 4140 Round Bar Steel
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 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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