Forged Pre-harden AISI 4340 Steel Round Bars Supplier
- 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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Quality Product, Order Online Tracking, Timely Delivery
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Specification
Standard:
API,DIN,BS,GB,JIS,EN,AISI,ASTM
Technique:
Cold Drawn,Cold Rolled,Hot Rolled,Spring,EFW,Extruded,Saw,Forged,ERW
Shape:
Rectangular,Oval,LTZ,Round,Hexagonal,C Channel,Square,U Channel
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Polished,Bright,Black,PVDF Coated,Chromed Passivation
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:
13-300mm
Length:
6-12m
Net Weight:
2mt
Forged Pre-harden AISI 4340 Steel Round Bars Supplier
Product Description of Forged Pre-harden AISI 4340 Steel Round Bars Supplier
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 Pre-harden AISI 4340 Steel Round Bars Supplier
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 Pre-harden AISI 4340 Steel Round Bars Supplier
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 Pre-harden AISI 4340 Steel Round Bars Supplier
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 Pre-harden AISI 4340 Steel Round Bars Supplier
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 advantages of using low-alloy steel round bars?
- There are several advantages of using low-alloy steel round bars, which make them a popular choice in various industries. Firstly, low-alloy steel round bars offer increased strength and durability compared to regular carbon steel. This makes them suitable for applications that require high strength and resistance to wear and tear. The addition of alloying elements such as manganese, chromium, and nickel enhances the hardness and toughness of the steel, making it highly reliable and long-lasting. Secondly, low-alloy steel round bars exhibit excellent weldability and machinability. The presence of alloying elements allows for better control over the grain structure of the steel, resulting in improved weldability. This means that low-alloy steel round bars can be easily welded and fabricated into complex shapes without compromising their structural integrity. Additionally, their machinability enables efficient processing and customization according to specific requirements. Furthermore, low-alloy steel round bars offer enhanced resistance to corrosion and atmospheric conditions. The alloying elements present in these bars form a protective oxide layer on the surface, preventing the steel from rusting and deteriorating over time. This makes them ideal for outdoor applications exposed to harsh environments, such as construction, marine, and oil and gas industries. Moreover, low-alloy steel round bars are cost-effective compared to higher-alloy or stainless steel alternatives. While providing similar strength and performance, low-alloy steel is generally more affordable, making it a viable option for projects with budget constraints. This cost-effectiveness, combined with their durability and versatility, makes low-alloy steel round bars a preferred choice for a wide range of applications. In conclusion, the advantages of using low-alloy steel round bars include increased strength and durability, excellent weldability and machinability, resistance to corrosion, and cost-effectiveness. These properties make low-alloy steel round bars a reliable and versatile material for various industries, contributing to their widespread use in numerous applications.
- Q: What are the advantages of using nickel-chromium-manganese alloy steel round bars?
- There are several advantages of using nickel-chromium-manganese alloy steel round bars in various applications. Firstly, this type of alloy steel offers excellent strength and durability. The combination of nickel, chromium, and manganese enhances the overall strength of the steel, making it resistant to wear, impact, and deformation. This is particularly beneficial in industries such as construction, manufacturing, and automotive, where the round bars are commonly used for structural support and load-bearing purposes. Secondly, nickel-chromium-manganese alloy steel round bars exhibit excellent corrosion resistance. The presence of nickel and chromium in the alloy composition makes it highly resistant to rust and oxidation, even in harsh environments or exposure to corrosive substances. This property is crucial in applications where the round bars are exposed to moisture, chemicals, or high temperatures, such as marine environments or chemical processing plants. Additionally, this type of alloy steel offers good weldability and machinability. The combination of nickel, chromium, and manganese provides a balanced composition that allows for easy welding and machining operations. This makes it convenient for fabricators and manufacturers to work with the round bars, enabling them to create complex shapes or structures without compromising the material's integrity. Moreover, nickel-chromium-manganese alloy steel round bars have excellent heat resistance. The presence of nickel and chromium in the alloy composition enhances its ability to withstand high temperatures without losing its strength or shape. This property makes it suitable for applications that involve exposure to extreme heat, such as furnace components, heat exchangers, or high-temperature industrial processes. Lastly, the use of nickel-chromium-manganese alloy steel round bars often leads to cost savings in the long run. Due to their exceptional strength and durability, these round bars have a longer lifespan compared to other materials. This reduces the need for frequent replacements, resulting in lower maintenance costs and improved overall efficiency. In conclusion, the advantages of using nickel-chromium-manganese alloy steel round bars include excellent strength and durability, corrosion resistance, weldability, machinability, heat resistance, and long-term cost savings. These properties make them a preferred choice in various industries where high-performance materials are required.
- Q: Can steel round bars be used for making stabilizer bars?
- Stabilizer bars can indeed be made using steel round bars. The automotive industry commonly employs steel due to its exceptional durability, high strength, and resistance to deformation. Stabilizer bars, also referred to as sway bars, are crucial components in a vehicle's suspension system. Their purpose is to enhance stability while cornering and minimize body roll. These bars endure substantial forces and must possess the ability to withstand heavy loads. Steel round bars offer the essential strength and rigidity necessary for stabilizer bars to effectively fulfill their function. Moreover, steel is easily accessible and cost-effective, which contributes to its popularity as a preferred material for manufacturing stabilizer bars in the automotive industry.
- Q: Is there any technique for welding round steel?
- The welding position is horizontal fillet welding, to control the size of the weld pool of available elliptic transport method the molten iron is brought up, and then try to consider the position of welding welding (a little more than half of small to)
- Q: How do you identify the grade of a steel round bar?
- There are several ways to determine the grade of a steel round bar. First, examining the markings or labels on the bar itself can provide valuable information. Manufacturers often imprint or etch the grade directly onto the bar's surface. These markings usually include details like the grade designation (e.g., 304, 316, 4140), which represents the specific alloy composition, and may also include additional information such as the heat or lot number. Another method involves consulting the mill test certificate (MTC) that comes with the steel round bar. The MTC provides extensive information about the composition, mechanical properties, and other relevant specifications of the material. Typically, the steel mill or supplier issues the MTC, and it can be requested at the time of purchase. Additionally, the grade of a steel round bar can be determined through visual inspection and physical testing. Visual inspection entails examining the bar's appearance, texture, and color. Different grades of steel exhibit distinct characteristics, such as a glossy or matte finish, specific surface treatments, or variations in color due to varying alloying elements. Physical testing methods, such as tensile or hardness testing, can further confirm the steel grade. These tests measure the material's mechanical properties, including its strength, ductility, and hardness. By comparing the test results with established standards and specifications for different steel grades, it is possible to identify the grade of the round bar. In conclusion, to ascertain the grade of a steel round bar, one can inspect the markings, refer to the mill test certificate, visually assess the bar, and conduct physical tests to evaluate its mechanical properties.
- Q: What are the advantages of using chromium-molybdenum alloy steel round bars?
- One of the main advantages of using chromium-molybdenum alloy steel round bars is their superior strength and durability. This type of alloy steel has excellent tensile strength and high resistance to wear and corrosion, making it ideal for various applications that require a strong and long-lasting material. Additionally, chromium-molybdenum alloy steel round bars offer good heat resistance, making them suitable for use in high-temperature environments. Overall, these bars provide a reliable and cost-effective solution for industries such as construction, automotive, and manufacturing.
- Q: What are the different types of steel round bar surface finishes for corrosion resistance?
- There are several types of steel round bar surface finishes that provide corrosion resistance. Some common options include polished, brushed, satin, and electropolished finishes. Additionally, coatings such as galvanized, black oxide, and powder coating can also be applied to steel round bars to enhance their corrosion resistance.
- Q: What are the different surface coatings available for steel round bars?
- There are several different surface coatings available for steel round bars, each with their own unique benefits and applications. Some of the most common surface coatings include: 1. Galvanized Coating: This involves applying a layer of zinc to the surface of the steel round bar through a process called hot-dip galvanizing. The zinc coating provides excellent corrosion resistance, protecting the steel from rust and other forms of degradation. Galvanized coatings are commonly used in outdoor and high-humidity environments. 2. Epoxy Coating: Epoxy coatings are applied as a powder or liquid and then cured through a chemical reaction. They offer excellent chemical resistance, durability, and protection against corrosion. Epoxy coatings are often used in industrial and marine applications where harsh chemicals or saltwater exposure are a concern. 3. Chrome Plating: This involves electroplating a layer of chromium onto the surface of the steel round bar. Chrome plating offers high corrosion resistance, as well as excellent hardness and wear resistance. It is commonly used in applications where aesthetic appeal and enhanced durability are desired, such as automotive parts and decorative fixtures. 4. Powder Coating: Powder coating is a dry finishing process that involves applying a powdered polymer to the surface of the steel round bar and then heat-curing it. This creates a durable and decorative finish that is resistant to chipping, scratching, and fading. Powder coatings are available in a wide range of colors and textures, making them popular for architectural and decorative purposes. 5. Black Oxide Coating: Black oxide is a conversion coating that is created by a chemical reaction with the steel surface. It provides a black, decorative finish while also offering mild corrosion resistance. Black oxide coatings are commonly used in applications where an aesthetic appearance is desired, such as firearms and hardware. These are just a few examples of the different surface coatings available for steel round bars. The choice of coating will depend on the specific requirements of the application, including the desired level of corrosion resistance, durability, and aesthetic appeal.
- Q: Can steel round bars be used in the aerospace industry?
- Steel round bars have the capacity to be utilized in the aerospace industry. Steel is a versatile substance that finds application in diverse sectors, including aerospace. In the construction of aircraft components and structures, such as landing gears, engine parts, and structural supports, steel round bars are frequently employed. Steel possesses exceptional strength and durability, crucial attributes for guaranteeing aircraft safety and reliability in the aerospace field. Moreover, steel round bars can be customized and manipulated to meet the specific design and performance necessities of aerospace applications. In summary, steel round bars are an appropriate material selection for numerous aerospace applications owing to their mechanical properties, dependability, and cost-effectiveness.
- Q: Can steel round bars be used for making exhaust systems?
- Indeed, exhaust systems can be fabricated using steel round bars. Steel, being renowned for its endurance, resistance to heat, and capacity to endure extreme temperatures and harsh surroundings, is widely favored as a material for exhaust systems. By utilizing steel round bars, one can fashion the pipes, mufflers, and other constituents of an exhaust system. Moreover, these bars can be readily welded and molded into the preferred shape, enabling customization and design flexibility. Furthermore, steel round bars can furnish the essential strength and structural soundness imperative for an effective and enduring exhaust system.
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Forged Pre-harden AISI 4340 Steel Round Bars Supplier
- 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
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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