AISI4140 Forged Round Bar with Turned Surface
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 50000 m.t./month
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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,BV,IBR,RoHS,CE,API,BSI,UL
Thickness:
16-300mm
Length:
6-12mm
Net Weight:
2mt
AISI4140 Forged Round Bar with Turned Surface
Product Description of AISI4140 Forged Round Bar with Turned Surface
1. Steel grade: ASTM4140, SCM440, 42CrMo, DIN1.7225
2. Length: 6M-12M
3. Diameter: 16mm-300mm
4. Product range: round bar, flat bar, square bar
5. Technique: Hot rolled, forged, cold drawn
Specification of AISI4140 Forged Round Bar with Turned Surface
Material | AISI4140 | Round bar | Dia(mm) | 16-300mm |
Process | EAF + LF + VD + Forged + Heat Treatment (optional) | Length (mm) | Max 12m | |
Heat treatment | Normalized / Annealed / Quenched / tempered | Flat bar | Thickness(mm) | 8-500mm |
Delivery condition | Hot forged +Rough machined (black surface after Q/T)+ Turned (optional) | Width(mm) | 70-200mm | |
Test | Ultrasonic test according to SEP 1921-84 D/d | Length (mm) | Max 12m |
Chemical Composition of AISI4140 Forged Round Bar with Turned Surface
C | Si | Mn | Cr | Mo | P | S |
0.38~0.43 | 0.15~0.35 | 0.75~1.00 | 0.8~1.1 | 0.15~0.25 | ≤0.035 | <0.04< td=""> |
Photo Show of AISI4140 Forged Round Bar with Turned Surface
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of AISI4140 Forged Round Bar with Turned Surface
1. Steel round bar is used in a large number of architectural and engineering structures. Or it can be used in construction of plants for the production of steel house frames, high-voltage transmission towers, bridges, vehicles, boilers, containers, ships, etc.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Some special material steel round bar can be used for main shaft of steamer, hummer shank, with big section and supper force.
Company Information
CNBM International Corporation is the most important trading platform of CNBM group.
Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.
F A Q
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, Factory or Trading Company?
CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.
4, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
5, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
CNBM 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: What are the different types of steel round bar surface finishes used in the marine industry?
- In the marine industry, various surface finishes are commonly utilized for steel round bars. These finishes possess distinct characteristics and serve specific purposes, making them suitable for particular applications. The marine industry frequently employs the following steel round bar surface finishes: 1. Polished Finish: To achieve a polished finish, the surface of the steel round bar is ground until it becomes smooth and reflective. This finish is employed when aesthetics are important, as it provides an appealing and shiny appearance. Polished finishes are commonly used for decorative purposes on boat fittings, handrails, and other exposed areas. 2. Mill Finish: Mill finish refers to the surface condition of steel round bars when they are received from the mill without any additional treatment. This finish is characterized by a rough and dull appearance, as it is not intended to be visually pleasing. Mill finishes are typically utilized when a smooth or polished surface is unnecessary, such as in structural applications or when the material will be painted or coated. 3. Shot Blasted Finish: Shot blasting is a surface treatment process that involves propelling small steel shots at high velocity onto the surface of the round bar. This process eliminates surface impurities, scales, or rust, resulting in a clean and slightly textured finish. Shot blasted finishes are commonly used in marine applications where improved adhesion of coatings or paint is required, as the textured surface provides a better bonding surface. 4. Hot Rolled Finish: The hot rolled finish is attained by subjecting the steel round bar to high temperatures during the manufacturing process, followed by rapid cooling. This process creates a scaly surface with a rough texture. Hot rolled finishes are suitable for marine applications where corrosion resistance is not the primary concern and where the material will undergo further processing or coating. 5. Galvanized Finish: Galvanizing involves applying a protective zinc coating to the surface of the steel round bar. This finish offers excellent corrosion resistance, making it ideal for marine applications where the material will be exposed to saltwater or harsh environmental conditions. Galvanized finishes are commonly employed for boat trailers, marine hardware, and other components that require enhanced protection against corrosion. These are merely a few examples of the diverse steel round bar surface finishes used in the marine industry. Each finish possesses its own unique properties and advantages, allowing for a wide range of applications in the maritime sector. The choice of finish depends on factors such as aesthetics, corrosion resistance, coating compatibility, and the specific requirements of the marine application.
- Q: What is the difference between a centerless ground and a polished steel round bar?
- A centerless ground steel round bar and a polished steel round bar are both types of steel bars that have undergone different finishing processes, resulting in distinct qualities and characteristics. A centerless ground steel round bar is produced by grinding the surface of the steel bar using a specialized machine called a centerless grinder. This process removes any imperfections or irregularities on the surface, resulting in a smooth and uniform finish. The centerless grinding process also ensures that the diameter of the bar remains consistent throughout its length. This makes centerless ground steel round bars ideal for applications that require precise dimensions and a smooth surface, such as in machining operations or as a base material for further processing. On the other hand, a polished steel round bar is achieved through a polishing process, where the surface of the steel bar is buffed and polished using abrasive materials. This process helps to enhance the aesthetic appearance of the steel bar, giving it a shiny and reflective surface. Unlike centerless grinding, polishing does not involve removing material from the surface but rather smoothing and refining it. Polished steel round bars are often used in decorative applications, such as in architecture, interior design, or as components in high-end furniture. In summary, the main difference between a centerless ground steel round bar and a polished steel round bar lies in the finishing process. Centerless grinding focuses on achieving precise dimensions and a smooth surface, making it suitable for functional applications. On the other hand, polishing aims to enhance the visual appeal of the steel bar, making it more suitable for decorative purposes.
- Q: What is the difference between a bright and a black steel round bar?
- The appearance and surface finish are the main factors that differentiate a bright steel round bar from a black steel round bar. A bright steel round bar, also referred to as a bright drawn or turned bar, possesses a sleek and glossy surface. This is accomplished through a process known as cold drawing, wherein the steel bar is pulled through a die to eliminate any flaws and create a consistent shape. The outcome is a highly polished and reflective surface that is aesthetically pleasing. Conversely, a black steel round bar features a dark, rough, and non-reflective surface. This is due to the fact that it does not undergo the same cold drawing process as a bright steel bar. The black surface is typically a result of the scale that forms on the steel during the manufacturing process, which remains intact. In terms of properties, both bright and black steel round bars are composed of the same material, typically carbon steel. Thus, their mechanical properties such as strength, hardness, and toughness are generally similar. However, the manufacturing process of the bright steel bar aids in enhancing its surface quality and dimensional accuracy in comparison to the black steel bar. Ultimately, the choice between a bright and a black steel round bar depends on the desired aesthetic appearance and the specific requirements of the application. Bright steel bars are commonly used in decorative applications where a polished and visually appealing finish is desired. On the other hand, black steel bars are often utilized in structural applications where surface appearance is less important but strength and durability are crucial.
- Q: Can steel round bars be welded?
- Steel round bars can indeed be welded, as welding is a widely employed technique for connecting them. This involves heating the bars to a considerable temperature and subsequently applying pressure to fuse them, resulting in robust and long-lasting connections. Nonetheless, it is crucial to utilize suitable welding techniques and equipment in order to attain a weld of superior quality.
- Q: How do you calculate the bending stress in a steel round bar?
- To calculate the bending stress in a steel round bar, you need to consider the applied load and the properties of the bar. The bending stress is a measure of the internal forces that develop within the bar when it is subjected to an external load that causes it to bend. The formula used to calculate the bending stress is: σ = (M * c) / I Where: - σ represents the bending stress (in units of force per unit area, such as pascals or psi) - M is the bending moment, which is the product of the applied load and the distance from the neutral axis of the bar to the point of interest. It is typically measured in units of force multiplied by distance (e.g., N·m or lb·ft). - c is the distance from the neutral axis to the outermost fiber of the bar. It is also known as the distance to the extreme fiber or the radius of the bar. - I is the moment of inertia, which represents the resistance of the bar to bending. It is a property that depends on the shape and dimensions of the cross-section of the bar. To calculate the moment of inertia for a round bar, the formula is: I = (π * d^4) / 64 Where: - I represents the moment of inertia - π is a mathematical constant (approximately 3.14159) - d is the diameter of the round bar Once you have determined the bending stress using the above formulas, you can compare it to the yield strength of the steel material to assess the safety factor and determine if the bar will undergo permanent deformation or failure.
- Q: Can steel round bars be welded to other materials?
- Yes, steel round bars can be welded to other materials. The process typically involves using compatible welding techniques and materials, such as specific filler metals, to achieve a strong and durable bond between the steel round bar and the other material.
- Q: Can steel round bars be used in the manufacturing of pressure vessels?
- Pressure vessels can make use of steel round bars for their construction. These bars are commonly chosen due to their robustness and durability. The circular shape of these bars allows for an even distribution of stress and pressure, which makes them ideal for withstanding the internal pressure generated by the vessel's contents. Moreover, steel round bars can be easily manipulated, welded, and machined to meet the specific requirements of pressure vessel fabrication. However, it is crucial to ensure that the steel used in these bars complies with the necessary specifications and standards for pressure vessel manufacturing, such as those established by international codes like ASME or EN. Furthermore, it is imperative to conduct regular inspections, implement quality control measures, and adhere to relevant safety guidelines throughout the manufacturing procedure to guarantee the integrity and safety of the pressure vessel.
- Q: Cold drawn steel wire is a round bar or thread steel in Construction Engineering?
- Cold drawn steel wire belongs to round bar in building engineering, and it is thread steel after coining. But the material of steel is not good. Who knows what material he made?.
- Q: What are the different types of steel round bars used in the automotive drivetrain systems?
- There are several types of steel round bars commonly used in automotive drivetrain systems, including alloy steel, carbon steel, and stainless steel. These bars are chosen based on their specific properties and characteristics, such as strength, durability, and resistance to corrosion. The selection of the type of steel round bar depends on the specific application and requirements of the drivetrain system.
- Q: How do you calculate the moment of inertia for a steel round bar?
- To determine the moment of inertia for a steel round bar, one can utilize the equation for the moment of inertia of a solid cylinder. Denoted as I, the moment of inertia signifies an object's resistance to rotational changes. The equation for the moment of inertia of a solid cylinder is as follows: I = (1/2) * m * r^2 Where: - I represents the moment of inertia - m denotes the mass of the cylinder - r signifies the radius of the cylinder To calculate the moment of inertia for a steel round bar, it is necessary to possess knowledge of both the bar's mass and radius. The mass can be determined by multiplying the steel's density by the cylinder's volume. The volume of a cylinder is given by the subsequent formula: V = π * r^2 * h Where: - V symbolizes the volume - r stands for the radius - h represents the height or length of the round bar After obtaining the mass and radius, one can then substitute these values into the formula for moment of inertia to compute it. It is crucial to ensure unit consistency during this process (e.g., converting centimeters to meters if the radius is initially given in centimeters). It is important to note that the aforementioned formula assumes that the steel round bar is a solid cylinder. Should the bar possess a different shape or contain hollow sections, these factors must be taken into consideration when conducting the calculation.
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AISI4140 Forged Round Bar with Turned Surface
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 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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