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
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Quality Product, Order Online Tracking, Timely Delivery
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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: Are steel round bars suitable for tool-making applications?
- Tool-making applications can benefit from the use of steel round bars. These bars possess numerous advantages that render them well-suited for tool-making purposes. Firstly, steel's exceptional strength and durability enable tools crafted from steel round bars to endure heavy usage and resist wear and tear. Moreover, steel boasts a high level of hardness, a critical characteristic for tools employed in cutting, drilling, or shaping materials. Furthermore, steel round bars can be effortlessly machined and molded into various tool designs, offering versatility and customization options. Additionally, steel exhibits commendable heat resistance and can withstand high temperatures, making it a suitable choice for tools utilized in demanding fields such as metalworking or construction. Overall, steel round bars remain a favored selection in tool-making due to their robustness, longevity, adaptability, and ability to meet the specific requirements of diverse tool applications.
- Q: Are steel round bars suitable for bearing applications?
- Yes, steel round bars are generally suitable for bearing applications. Steel is known for its strength, durability, and resistance to wear and tear, making it an ideal material for bearing applications. Steel round bars are often used in the manufacturing of bearings due to their high load-carrying capacity and ability to withstand heavy loads and rotational forces. Additionally, steel round bars can be heat-treated to enhance their hardness and improve their resistance to friction and corrosion, further enhancing their suitability for bearing applications. However, it is important to consider the specific requirements and conditions of the bearing application to ensure that the steel round bars chosen meet the necessary standards and specifications.
- Q: What are the different types of tests performed on steel round bars for quality control?
- There are several types of tests performed on steel round bars for quality control purposes. These tests help to ensure that the steel bars meet the required standards and specifications. Some of the common tests conducted on steel round bars include: 1. Tensile Test: This test evaluates the tensile strength, yield strength, and elongation properties of the steel bars. It involves applying a pulling force to the bar until it breaks, measuring the maximum force the bar can withstand, and determining the bar's ability to stretch without fracturing. 2. Hardness Test: The hardness test measures the resistance of the steel bar to indentation or scratching. It provides an indication of the bar's strength and durability. Common hardness tests include Rockwell, Brinell, and Vickers tests. 3. Chemical Composition Analysis: This test determines the chemical composition of the steel round bars, including the percentage of various elements such as carbon, manganese, sulfur, phosphorus, and others. It ensures that the bars meet the specified chemical composition requirements. 4. Ultrasonic Testing: Ultrasonic testing uses high-frequency sound waves to detect any internal defects or discontinuities within the steel bars. This non-destructive test helps identify cracks, voids, or other defects that may affect the bar's structural integrity. 5. Dimensional Inspection: This test ensures that the steel round bars meet the required dimensional tolerances, including diameter, length, and straightness. It involves using precision measuring instruments such as calipers, micrometers, and gauges to verify the bar's dimensions. 6. Surface Quality Examination: This test inspects the surface condition of the steel bars for any defects, such as cracks, pits, scratches, or other surface irregularities. It is crucial to ensure that the bars have a smooth and defect-free surface for proper functionality and safety. 7. Microstructure Analysis: Microstructure analysis involves examining the steel bar's internal structure under a microscope. It helps determine the grain size, inclusion content, and overall microstructural integrity of the bars. This analysis provides insights into the bars' mechanical properties and their ability to withstand various loads and stresses. By performing these tests, manufacturers can ensure that the steel round bars meet the required quality standards and are suitable for their intended applications.
- Q: What are the different types of heat treatment for steel round bars?
- There are several different types of heat treatment methods commonly used for steel round bars. These methods are employed to improve the mechanical properties and overall performance of the steel. The most commonly used heat treatment processes for steel round bars include annealing, normalizing, quenching, tempering, and case hardening. 1. Annealing: This heat treatment process involves heating the steel round bars to a specific temperature and then slowly cooling them to room temperature. Annealing helps in reducing internal stresses, improving machinability, and increasing ductility. 2. Normalizing: In normalizing, the steel round bars are heated to a temperature above the critical range and then allowed to cool in still air. This process helps in refining the grain structure and enhancing the mechanical properties of the steel, such as strength and toughness. 3. Quenching: Quenching involves heating the steel round bars to a high temperature and then rapidly cooling them by immersing them in a quenching medium, such as water, oil, or polymer. This process results in the formation of a hardened microstructure, increasing the hardness and wear resistance of the steel. 4. Tempering: After the quenching process, the steel round bars are subjected to tempering. Tempering involves reheating the quenched steel to a specific temperature and then cooling it in still air. This process reduces the brittleness caused by quenching, increases the toughness of the steel, and helps in relieving residual stresses. 5. Case hardening: This heat treatment process is used to increase the hardness and wear resistance of the outer surface of the steel round bars while maintaining a tough and ductile core. Case hardening involves heating the steel in the presence of a carbon-rich atmosphere or by applying a carbon-rich substance, followed by quenching and tempering. Each of these heat treatment methods has its own advantages and is used based on the desired properties and applications of the steel round bars. It is important to carefully select the appropriate heat treatment process to achieve the desired mechanical properties and performance of the steel.
- Q: What is hot rolling? What is called forging?
- Hot rolling is the rolling process at which the temperature is above the recrystallization temperature, so that the finished product is better than cold rolling
- Q: What is the maximum temperature steel round bars can withstand?
- Steel round bars have varying maximum temperatures they can withstand depending on their specific grade. Nevertheless, most steel round bars generally remain structurally intact at temperatures between approximately 1000 and 1200 degrees Celsius (1832 to 2192 degrees Fahrenheit). It is worth mentioning that extended exposure to high temperatures can result in decreased strength and hardness of the steel, along with potential dimensional alterations and distortion. Moreover, the properties and behavior of steel at elevated temperatures can be influenced by factors like alloy composition, heat treatment, and the presence of other elements or impurities. If applications require steel round bars to endure exceedingly high temperatures beyond the typical range, specialized high-temperature steels like heat-resistant or creep-resistant alloys may be employed. These alloys are specifically engineered to retain their mechanical properties and structural integrity even at elevated temperatures, often reaching several thousand degrees Celsius.
- Q: What is the maximum temperature steel round bars can withstand?
- The maximum temperature that steel round bars can withstand depends on the specific grade and composition of the steel. However, most standard carbon steels can typically withstand temperatures up to approximately 1000°C (1832°F) before their mechanical properties begin to significantly degrade.
- Q: What are the different finishes available for steel round bars?
- There are several different finishes available for steel round bars, including hot rolled, cold drawn, turned and polished, and coated finishes.
- Q: What are the different safety considerations when working with steel round bars?
- When working with steel round bars, there are several safety considerations that need to be taken into account. First and foremost, it is important to wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and steel-toed boots to protect against potential hazards. One of the main safety concerns when handling steel round bars is the risk of injury from sharp edges or burrs. These can cause cuts or puncture wounds if not handled with care. It is crucial to inspect the round bars for any sharp edges or burrs and file them down or use protective coverings if necessary. Another important consideration is the weight of the steel round bars. Depending on their size and length, they can be quite heavy and may require the use of lifting equipment or assistance from another person to prevent strain or back injuries. It is essential to use proper lifting techniques and avoid overexertion when moving or transporting the bars. Fire safety is also a concern when working with steel round bars. Steel can conduct heat and electricity, so it is important to take precautions to prevent sparks or heat sources from igniting flammable materials in the vicinity. Fire extinguishers should be readily available, and the work area should be well-ventilated to minimize the risk of fire or smoke inhalation. Additionally, when cutting or manipulating steel round bars, there is a potential for flying debris or metal chips. Safety goggles or a face shield should be worn to protect the eyes from these hazards. It is also important to use appropriate cutting tools and techniques to prevent accidents or injuries. Finally, it is crucial to have proper training and knowledge of the equipment and machinery used when working with steel round bars. This includes understanding the correct procedures for cutting, bending, or welding the bars, as well as being aware of any specific safety precautions related to the machinery being used. Overall, safety should always be a top priority when working with steel round bars. By following these considerations and taking the necessary precautions, the risk of accidents or injuries can be minimized, ensuring a safe working environment.
- Q: Can steel round bars be used as axles or shafts?
- Axles or shafts can indeed be made from steel round bars. This is because steel possesses excellent strength and durability, making it a popular choice for axles and shafts. In particular, steel round bars are ideal for applications that involve rotational movement, such as axles and shafts, as they can handle heavy loads and endure bending and torsional forces. Moreover, steel round bars can be machined and heat-treated to meet specific requirements for hardness and surface finish, further enhancing their suitability for use as axles or shafts. All in all, steel round bars are a dependable and widely utilized option for axles and shafts in various industries, including automotive, machinery, and construction.
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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
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