Forged Alloy Steel AISI 4140 Round Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
You Might Also Like
Specification
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
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,CE
Thickness:
as required
Length:
as required
Net Weight:
as required
Product Description of AISI 4140 Round Bar
AISI 4140 round bar are flawless completely free from cracks and flakes, and does not contain any other imperfection,such as porosity non-metallic inclusions segregations, hard spots and residual tensions to a degree affecting their strength and durability.
| Product: | forged alloy steel AISI 4140 round bar |
| Material: | 4145, 42CrMo4, 4140, SAE8620 ,4340 etc. |
| Supplier Range: | OD.200-800mm,Weight≤20T |
| Delivery time: | 30 days after receive the deposit. |
| Produce Process: | EAF + LF + VD +(ESR) + Forged + Heat Treatment (optional) |
| Delivery condition: | Hot forged, Heat-treatment (Normalized / Annealed / Quenched / tempered), Rough machining. |
| Surface Finish: | Black, Peeled, Turned & Polished |
| Payment Term: | 30% advance by T\T; Balance pay before the shipment against shipping documents or irrevocable LC at sight |
| Technical Data: | Chemical Composition, Physical Properties and Mechanical Testing according to the customer's requirement and Standard. |
The steel is suited to applications where high surface pressures exist and friction is to be resisted as in the case of severely loaded gears, axles and pinions. It is used extensively in most industry sectors for applications requiring higher tensile strength.
Packing And Delivery
| Package | Seaworthy package (or as customer require) |
| MOQ | 1 Pieces |
| Delivery | 30 days (can be short if we have stock) |
| Payment | 30%T/T in advanced+70% balanced;irrevocable L/C at sight |
| Remarks | All-risk insurance and accept the third party test |
| Port | Tianjin/Qingdao/Shanghai |
Equipment
We are well-equipped with 2000-Ton Hydraulic press, 15-Ton Hydraulic manipulator, various kinds of Lathe and boring machine, product range OD 200mm-800mm, Length less than 9m.
- Q: What are the different types of steel round bars used in the defense industry?
- There are various types of steel round bars used in the defense industry, including but not limited to carbon steel, alloy steel, stainless steel, and tool steel. Each type has specific properties that make them suitable for different applications within the defense sector.
- Q: How are steel round bars heat treated?
- To enhance the strength and hardness of steel round bars, as well as improve their mechanical properties, they undergo a heat treatment process comprising of three main steps: heating, soaking, and cooling. To begin with, the steel round bars are subjected to heating at a specific temperature referred to as the austenitizing temperature. This temperature is typically higher than the critical temperature of the steel, enabling the material to transform into its austenite phase. The exact austenitizing temperature varies depending on the type of steel and the desired properties. Once the steel round bars reach the austenitizing temperature, they are then soaked at this temperature for a specific duration. This soaking period ensures a complete transformation of the microstructure, promoting uniformity and preventing any thermal gradients within the material. The duration of soaking plays a vital role in determining the ultimate properties of the steel. After the soaking phase, the steel round bars undergo rapid cooling through a process known as quenching. Quenching is typically achieved by immersing the bars in a quenching medium, such as oil, water, or air, depending on the desired hardness and properties. The quenching process swiftly cools the bars, resulting in a martensitic transformation within the steel's microstructure. This transformation contributes to increased hardness and strength. Subsequently, the steel round bars may undergo an additional step called tempering. Tempering involves reheating the bars to a lower temperature, usually below the austenitizing temperature. This step aims to alleviate the brittleness caused by the quenching process while further enhancing the material's toughness and ductility. In summary, the heat treatment process for steel round bars involves heating to the austenitizing temperature, soaking for a specific duration, quenching to rapidly cool and harden the material, and potentially tempering to achieve the desired properties. This process allows for the customization and improvement of the steel's mechanical properties, making it suitable for a wide range of applications.
- Q: What are the different grades of steel used in round bars?
- The different grades of steel used in round bars vary depending on the desired properties and applications. Some common grades include mild steel (low carbon steel), stainless steel, alloy steel, and tool steel. Each grade offers specific characteristics such as strength, corrosion resistance, hardness, or machinability, allowing for a wide range of applications in industries like construction, manufacturing, automotive, and aerospace.
- Q: What is the minimum yield strength of steel round bars?
- The specific grade and type of steel being used can cause the minimum yield strength of steel round bars to vary. However, the majority of steel round bars generally possess a minimum yield strength of 36,000 psi (pounds per square inch) or 250 megapascals (MPa). This minimum yield strength ensures that the steel round bars are strong enough to resist applied loads and avoid deformation or failure. It is worth mentioning that certain applications may demand steel round bars with higher yield strengths to fulfill particular performance criteria.
- Q: Can steel round bars be used for gear applications?
- Yes, steel round bars can be used for gear applications. Steel round bars are often used in the manufacturing of gears due to their high strength and durability. They provide excellent mechanical properties, such as hardness and wear resistance, which are essential for gear applications. Steel round bars can be machined and heat-treated to achieve the desired tooth profile and surface finish required for gears. Additionally, steel round bars offer good dimensional stability and can withstand high loads and torque, making them suitable for various gear applications in industries such as automotive, machinery, and heavy equipment.
- Q: What is the maximum hardness achievable for steel round bars?
- The maximum hardness achievable for steel round bars depends on various factors such as the specific type of steel used, the heat treatment process applied, and the desired properties. However, in general, the maximum hardness achievable for steel round bars is typically around 60-65 HRC (Rockwell hardness scale) for high carbon steels, and can be even higher for certain specialty alloys or through additional surface treatments.
- Q: How can steel round bars be protected against corrosion?
- Steel round bars can be protected against corrosion through various methods. One common method is the application of a protective coating such as paint or epoxy. The coating acts as a barrier between the steel surface and the corrosive elements in the environment, preventing direct contact and thus reducing the risk of corrosion. Another effective way to protect steel round bars from corrosion is by galvanizing them. Galvanization involves coating the steel with a layer of zinc, which acts as a sacrificial anode. The zinc layer corrodes instead of the steel, providing a long-term protection against corrosion. Regular maintenance and inspection are also important in preventing corrosion. This includes removing any rust or scale that may have formed on the surface of the steel round bars, as these can accelerate the corrosion process. Additionally, keeping the steel round bars dry and free from moisture is essential, as excessive exposure to water or humidity can lead to corrosion. In industrial environments or areas where corrosive chemicals are present, it may be necessary to use specialized corrosion-resistant alloys for the steel round bars. These alloys, such as stainless steel or nickel alloys, have a higher resistance to corrosion and can withstand harsh conditions better than regular steel. Overall, the key to protecting steel round bars against corrosion is a combination of proper coatings, regular maintenance, and selecting the appropriate materials for the specific environment in which they will be used.
- Q: How do steel round bars compare to rubber round bars?
- Steel round bars and rubber round bars have different properties and applications. Steel round bars are known for their strength, durability, and resistance to high temperatures and corrosion. They are commonly used in construction, manufacturing, and engineering projects that require structural support or reinforcement. On the other hand, rubber round bars are known for their flexibility, shock absorption, and noise reduction properties. They are often used in applications such as automotive parts, conveyor belts, and vibration isolation systems. Overall, the choice between steel and rubber round bars depends on the specific requirements of the application and the desired properties needed.
- Q: Can steel round bars be used for making automotive suspension systems?
- Yes, steel round bars can be used for making automotive suspension systems. Steel round bars offer several advantages that make them suitable for this application. Firstly, steel is known for its high strength and durability, which are essential qualities for suspension components that need to withstand heavy loads and constant vibrations. Steel round bars also provide excellent stiffness and rigidity, allowing them to maintain the desired shape and function under various driving conditions. Furthermore, steel is readily available and cost-effective, making it a popular choice for automotive manufacturers. Additionally, steel round bars can be easily machined and formed into complex shapes, enabling the production of suspension components with precise dimensions and specifications. Overall, steel round bars are a reliable and practical material for making automotive suspension systems.
- Q: Can steel round bars be used for making architectural or decorative elements?
- Certainly, steel round bars are an excellent choice for crafting architectural or decorative elements. These bars possess numerous advantages that render them perfect for such applications. To begin with, steel is an enduring and robust material, guaranteeing the longevity and stability of the architectural or decorative element. Moreover, steel round bars can be easily manipulated and personalized to fashion intricate designs, making them adaptable for various architectural styles and aesthetics. These bars can be employed to produce features such as railings, balustrades, ornamental gates, sculptures, or even pieces of furniture. Additionally, the sleek and polished surface of the steel round bars enhances their visual allure, rendering them ideal for decorative purposes. Furthermore, steel is resistant to corrosion, ensuring that the architectural or decorative element will remain intact and visually pleasing even in outdoor or high-moisture environments. In conclusion, steel round bars are a fitting and sought-after option for creating architectural or decorative elements owing to their durability, versatility, and visual appeal.
Send your message to us
Forged Alloy Steel AISI 4140 Round Bar
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 100000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
Similar products
Hot products
Hot Searches
Related keywords
