Hot Forged QT AISI 4140 Alloy Steel Round Bar
- 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
Hot Forged QT AISI 4140 Alloy Steel Round Bar
Product Description of Hot Forged QT AISI 4140 Alloy Steel Round Bar
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 Hot Forged QT AISI 4140 Alloy Steel Round Bar
Material | ASTM4140 | 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 Hot Forged QT AISI 4140 Alloy Steel Round Bar
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 Hot Forged QT AISI 4140 Alloy Steel Round Bar
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of Hot Forged QT AISI 4140 Alloy Steel Round Bar
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: Are steel round bars suitable for aerospace applications?
- Yes, steel round bars can be suitable for aerospace applications. Steel is known for its high strength, durability, and resistance to corrosion, which are important factors in the aerospace industry. Steel round bars can be used in various aerospace components and structures such as landing gear, engine components, and structural supports. However, it is important to note that the specific grade and composition of the steel round bars must meet the stringent requirements and standards set by the aerospace industry. Additionally, other factors such as weight reduction efforts and the use of advanced materials like titanium and composites are also considered in aerospace applications.
- Q: Do steel round bars have a maximum load capacity?
- Yes, steel round bars have a maximum load capacity. The maximum load capacity of a steel round bar is determined by various factors such as the diameter and length of the bar, the type and grade of steel used, and the specific application or industry standards it is being used in. The load capacity is usually determined through testing and analysis, taking into consideration factors like yield strength, ultimate tensile strength, and the ability of the bar to withstand bending or deformation under load. It is important to consult engineering specifications and guidelines to ensure that the maximum load capacity of a steel round bar is not exceeded in order to maintain safety and structural integrity.
- Q: Can steel round bars be used in the production of construction equipment?
- Yes, steel round bars can be used in the production of construction equipment. Steel round bars are commonly used in the construction industry due to their strength, durability, and versatility. They can be used to manufacture various components of construction equipment such as axles, shafts, gears, and structural supports. The high tensile strength of steel round bars ensures that the equipment can withstand heavy loads and harsh operating conditions. Additionally, the machinability and weldability of steel round bars make them suitable for fabrication processes involved in the production of construction equipment. Overall, steel round bars are a reliable and commonly used material in the construction industry for manufacturing construction equipment.
- Q: What are the different types of steel round bars used in the agricultural sector?
- In the agricultural sector, different types of steel round bars are commonly used, including mild steel, carbon steel, and stainless steel. These bars are used for various applications such as constructing farm machinery, fencing, and handling equipment. Mild steel round bars are cost-effective and offer good strength, while carbon steel round bars provide enhanced durability and resistance to wear and tear. Stainless steel round bars are favored for their corrosion resistance properties, making them suitable for agricultural applications exposed to moisture or chemicals.
- Q: What is the maximum temperature steel round bars can withstand?
- The maximum temperature that steel round bars can withstand varies depending on the specific grade of steel. However, in general, most steel round bars can withstand temperatures up to around 1000 to 1200 degrees Celsius (1832 to 2192 degrees Fahrenheit) without significant loss of structural integrity. It is important to note that prolonged exposure to high temperatures can lead to a reduction in the strength and hardness of the steel, as well as potential dimensional changes and distortion. Additionally, the specific properties and behavior of steel at high temperatures can also be influenced by factors such as alloy composition, heat treatment, and the presence of other elements or impurities. For applications requiring steel round bars to withstand extremely high temperatures beyond the typical range, specialized high-temperature steels, such as heat-resistant or creep-resistant alloys, may be used. These alloys are specifically designed to maintain their mechanical properties and structural integrity at elevated temperatures, often up to several thousand degrees Celsius.
- Q: What is the difference between a polished and a precision ground steel round bar?
- A polished steel round bar is a bar that has been polished to achieve a smooth and shiny surface. This involves using abrasive materials to eliminate any flaws or roughness. As a result, the bar is visually appealing and has a high level of aesthetic appeal. On the other hand, a precision ground steel round bar is a bar that has been ground precisely to achieve accurate dimensions and a smooth surface. This grinding process involves removing material from the bar's surface using grinding wheels or other cutting tools. The aim of precision grinding is to ensure that the bar meets specific size and shape requirements, making it suitable for applications that require precise dimensions and tight tolerances. In conclusion, the main difference between a polished and a precision ground steel round bar lies in the purpose of the respective finishing processes. Polishing is primarily done for aesthetic reasons, enhancing the bar's appearance, while precision grinding focuses on achieving precise dimensions and tight tolerances to meet specific technical requirements.
- Q: Can steel round bars be used in the production of telecommunications equipment?
- Yes, steel round bars can be used in the production of telecommunications equipment. Steel is a versatile material that offers strength and durability, making it suitable for various applications, including telecommunications equipment. Steel round bars can be used to create structural components, connectors, brackets, and supports, among other parts required in the production of telecommunications equipment.
- Q: How do steel round bars compare to plastic round bars?
- Steel round bars and plastic round bars have several key differences that affect their performance and suitability for different applications. Strength and durability: Steel round bars are known for their exceptional strength and durability, making them ideal for applications requiring high load-bearing capacity. They can withstand heavy loads and resist deformation or breakage. On the other hand, plastic round bars are generally less strong and durable, making them more suitable for lighter applications where strength is not a primary concern. Weight: Steel round bars are significantly heavier than plastic round bars due to the difference in material density. This can be an advantage in some applications where additional weight is desired for stability or balance. Plastic round bars, on the other hand, are lighter and can be advantageous in applications where weight reduction is important, such as in aerospace or automotive industries. Corrosion resistance: Steel round bars are known for their excellent corrosion resistance, particularly when they are made from stainless steel. This makes them suitable for applications in harsh environments or exposed to moisture. Plastic round bars, however, are generally more susceptible to degradation due to exposure to UV radiation, chemicals, or extreme temperatures. Therefore, they may not be as suitable for outdoor or corrosive environments. Versatility: Steel round bars offer a wide range of options in terms of size, shape, and grade. They can be machined, welded, bent, or shaped to suit various applications. Plastic round bars also come in different shapes and sizes, but their versatility is somewhat limited compared to steel. They may not be as easily machined or welded, and their performance can be affected by temperature fluctuations. Cost: Steel round bars are generally more expensive than plastic round bars due to the higher cost of raw materials and manufacturing processes. Plastic round bars, on the other hand, are more affordable and can offer cost savings in certain applications. In summary, steel round bars offer superior strength, durability, and corrosion resistance, making them suitable for heavy-duty applications. Plastic round bars are lighter, more affordable, and can be advantageous in applications where weight reduction is important. Ultimately, the choice between steel and plastic round bars depends on the specific requirements of the application and the trade-offs between strength, weight, cost, and corrosion resistance.
- Q: What is the maximum phosphorus content allowed for steel round bars?
- The maximum phosphorus content allowed for steel round bars varies depending on the specific steel grade and industry standards. However, in general, the phosphorus content in steel round bars is typically limited to a maximum of 0.04% to 0.05%. This limitation is imposed to ensure the desired mechanical properties, such as strength, toughness, and ductility, of the steel product. Higher phosphorus content can negatively impact these properties and may lead to reduced weldability, increased brittleness, and decreased corrosion resistance. Therefore, manufacturers and regulatory bodies set strict limits on phosphorus content to ensure the quality and performance of steel round bars in various applications. It is important to consult relevant industry standards or specifications to determine the specific maximum phosphorus content allowed for a particular steel grade or application.
- Q: What is the typical hardness of a steel round bar?
- The hardness of a steel round bar can vary depending on its specific grade and heat treatment. Generally, steel round bars have a hardness ranging from 100 to 300 on the Brinell hardness scale, which measures a material's resistance to indentation and is commonly used for assessing metal hardness. It's worth noting that different applications may call for varying levels of hardness, and steel round bars can be tailored to meet specific requirements through heat treatment processes like quenching and tempering.
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Hot Forged QT AISI 4140 Alloy Steel Round Bar
- 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
OKorder Financial Service
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