Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 500000 m.t./month
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Specification
Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel Bar
Product Description of Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel 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 Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel Bar
Material | SCM4140 | 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 Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel 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 Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel 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 Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel 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: Can steel round bars be forged?
- Indeed, it is possible to forge steel round bars. The act of forging entails subjecting the steel to elevated temperatures and subsequently molding it by exerting pressure using either a forging hammer or press. In the realm of forging procedures, steel round bars frequently find application in fabricating diverse forms and items, including tools, automotive components, and machinery parts. The intense heat generated during the forging process endows the steel with enhanced malleability, rendering it more pliable and amenable to shaping, thereby yielding a final product that is robust and long-lasting.
- Q: What are the environmental benefits of using steel round bars?
- Steel round bars offer several environmental benefits: 1. Recyclability: Steel is one of the most recycled materials globally, reducing the need for new steel production and saving energy and resources. Moreover, recycling steel decreases landfill waste and helps combat environmental pollution. 2. Durability: Steel round bars have a long lifespan and high durability, minimizing the need for frequent replacements and reducing material consumption. Additionally, their durability decreases maintenance and repair requirements, further minimizing environmental impact. 3. Energy efficiency: The production of steel round bars requires less energy compared to materials like concrete or wood. This energy-saving feature applies to the entire product lifecycle, including extraction, manufacturing, transportation, and installation. 4. Reduced carbon emissions: Steel production emits less carbon dioxide (CO2) than other materials. By using steel round bars, we can help lower greenhouse gas emissions and combat climate change. Additionally, steel production can utilize alternative energy sources like renewable energy, further reducing carbon emissions. 5. Versatility and weight reduction: Steel round bars are versatile and applicable in various construction uses. Their high strength-to-weight ratio enables the creation of lightweight structures, resulting in reduced material requirements. This not only decreases environmental impact but also lowers transportation costs and fuel consumption during delivery. 6. Fire-resistant properties: Steel round bars exhibit exceptional fire resistance, which helps prevent the spread of flames and minimizes damage to structures. Consequently, this reduces the necessity for fire retardant chemicals that may have adverse environmental effects. In conclusion, the utilization of steel round bars presents numerous environmental advantages, including recyclability, durability, energy efficiency, reduced carbon emissions, weight reduction, and fire resistance. By choosing steel round bars, we can contribute to a more sustainable and eco-friendly construction industry.
- Q: How do steel round bars compare to titanium round bars?
- Steel round bars and titanium round bars have different properties and characteristics that make them suitable for different applications. Here is a comparison between the two: 1. Strength: Titanium round bars have a higher strength-to-weight ratio than steel round bars. This means that titanium can withstand higher loads and stresses while being lighter in weight compared to steel. However, steel round bars are generally stronger and more rigid than titanium, making them suitable for heavy-duty applications that require high strength. 2. Corrosion Resistance: Titanium round bars are highly resistant to corrosion, even in harsh environments such as saltwater. Steel, on the other hand, is susceptible to corrosion and requires additional protective measures (such as coatings or galvanization) to prevent rusting. Therefore, titanium round bars are preferred in applications where corrosion resistance is essential. 3. Density: Titanium round bars have a lower density compared to steel round bars. This low density makes titanium ideal for applications where weight reduction is crucial, such as aerospace and automotive industries. Steel round bars, with their higher density, are typically used in applications where weight is less of a concern. 4. Temperature Resistance: Titanium round bars have excellent heat resistance, retaining their mechanical properties at high temperatures. Steel round bars, however, can lose their strength and become brittle when exposed to high temperatures. Therefore, titanium round bars are suitable for applications that require elevated temperature resistance. 5. Cost: Steel round bars are generally more affordable than titanium round bars. Titanium is an expensive metal due to its scarcity and complex extraction process. The cost difference between the two materials can be significant, making steel round bars more favorable for budget-conscious projects. In conclusion, the choice between steel round bars and titanium round bars depends on the specific requirements of the application. Steel is preferred for its superior strength and affordability, while titanium offers advantages such as high strength-to-weight ratio, corrosion resistance, temperature resistance, and lower density.
- Q: What are the advantages of using chromium-vanadium alloy steel round bars?
- Some advantages of using chromium-vanadium alloy steel round bars include: 1. High strength and toughness: Chromium-vanadium alloy steel has excellent strength and toughness properties, making it suitable for applications requiring durability and resistance to wear and tear. 2. Improved corrosion resistance: The addition of chromium enhances the alloy's corrosion resistance, making it resistant to rust and other forms of corrosion, even in harsh environments. 3. Enhanced hardenability: Chromium-vanadium alloy steel can be easily heat-treated to achieve high hardness levels, allowing for increased wear resistance and improved overall performance. 4. Good machinability: The alloy steel round bars can be easily machined and fabricated, making them convenient to work with in various manufacturing processes. 5. Cost-effective: Chromium-vanadium alloy steel offers a good balance between performance and cost, making it a cost-effective choice for many applications compared to other high-performance alloys.
- Q: How do you prevent corrosion on steel round bars?
- To prevent corrosion on steel round bars, there are several effective methods that can be employed: 1. Coating: Applying a protective coating on the steel round bars is a common way to prevent corrosion. Coatings like paint or epoxy can act as a barrier between the steel and the external environment, preventing moisture and corrosive substances from coming into contact with the metal. 2. Galvanization: Galvanizing the steel round bars involves applying a layer of zinc on the surface. This zinc layer acts as a sacrificial anode, corroding in place of the steel if any damage occurs. This method is particularly effective in preventing corrosion in outdoor or marine environments. 3. Stainless steel: Using stainless steel round bars that contain a high percentage of chromium and nickel is another effective corrosion prevention method. The presence of these elements forms a passive, protective film on the surface of the steel, which acts as a barrier against corrosion. 4. Proper storage: Storing steel round bars in a dry and well-ventilated area can help prevent corrosion. Moisture, especially in humid environments, can accelerate the corrosion process. Therefore, it is crucial to keep the round bars away from direct contact with water or any other corrosive substances. 5. Regular maintenance: Regularly inspecting the steel round bars for signs of corrosion and promptly addressing any issues can prevent further damage. This may involve cleaning the bars using appropriate methods and applying protective coatings as necessary. By implementing these preventive measures, corrosion on steel round bars can be significantly reduced, ensuring their longevity and maintaining their structural integrity.
- Q: Can steel round bars be welded?
- Yes, steel round bars can be welded.
- Q: What is the machinability of a steel round bar?
- The machinability of a steel round bar refers to how easily it can be shaped, cut, or formed using machining processes such as drilling, milling, or turning. It is influenced by factors such as the composition of the steel, its hardness, and the presence of impurities. Higher machinability indicates that the steel can be machined more efficiently and with less tool wear, while lower machinability may require slower cutting speeds or more frequent tool changes.
- Q: How are steel round bars measured and specified?
- The diameter is utilized to measure and specify steel round bars. Typically, the diameter of a round bar is measured in millimeters or inches. The measurement is taken at the widest point of the circular cross-section. When it comes to specification, steel round bars are commonly specified by their diameter and length. For instance, a steel round bar can be specified as "25mm diameter x 3 meters length". This indicates that the bar has a diameter of 25mm and a length of 3 meters. Moreover, steel round bars can also be specified based on their tolerance, surface finish, and grade. Tolerance refers to the allowable deviation from the specified diameter. Surface finish pertains to the quality of the bar's surface, which can vary from rough to smooth. Grade signifies the quality and composition of the steel utilized to produce the round bar, such as mild steel, carbon steel, or alloy steel. Accurate measurement and specification of steel round bars are crucial to ensure that they meet the necessary dimensions and properties for a specific application.
- Q: What are the standard sizes of steel round bars?
- The standard sizes of steel round bars vary, but common diameters range from 1/4 inch to 12 inches.
- Q: Are steel round bars suitable for use in the construction of bridges?
- Indeed, steel round bars prove to be a suitable choice for the construction of bridges. Offering a multitude of advantages, they are an ideal option for such projects. To begin with, steel round bars exhibit remarkable tensile strength, enabling them to withstand substantial loads and forces without undergoing deformation or breakage. This attribute holds paramount importance for bridges, as they bear the weight of vehicles and pedestrians. By possessing high tensile strength, steel round bars ensure the structural integrity and safety of the bridge. Furthermore, steel round bars boast exceptional durability and resistance to corrosion. Considering the exposure of bridges to adverse environmental conditions like rain, snow, and saltwater, materials employed in their construction are susceptible to corrosion and deterioration. However, steel round bars are specifically designed to counteract these effects, guaranteeing the longevity and dependability of the bridge. Moreover, steel round bars are widely available in various sizes and lengths, catering to the versatility and adaptability required for different bridge designs and configurations. The uniform circular shape of these bars simplifies the construction process, enabling easy cutting, bending, and welding to meet the necessary specifications. In addition, steel round bars offer cost-effectiveness in bridge construction. Their favorable strength-to-weight ratio allows them to provide the required strength while minimizing the overall weight of the bridge. Consequently, this reduces the amount of material needed and lowers transportation costs during construction. In conclusion, steel round bars are highly suitable for bridge construction due to their high tensile strength, durability, corrosion resistance, versatility, and cost-effectiveness. They deliver the necessary strength and reliability to support heavy loads and withstand adverse environmental conditions, ensuring the safety and durability of the bridge.
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Forged GB/AISI/JIS Standard 4130 1.7218 SCM430 25CrMo4 Half Round Steel Bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 500000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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