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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OKorder Financial Service
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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 oil-hardening steel round bars?
- There are several advantages of using oil-hardening steel round bars in various applications. Firstly, oil-hardening steel round bars offer excellent wear resistance. This means that they can withstand repeated contact with abrasive materials or surfaces without experiencing significant wear and tear. This makes them suitable for use in industries such as manufacturing, construction, and mining where materials are subject to high levels of wear. Secondly, oil-hardening steel round bars exhibit high strength and toughness. This means that they can withstand heavy loads and impacts without fracturing or deforming. This makes them ideal for applications that require materials with high structural integrity, such as in the production of machinery, tools, and equipment. Additionally, oil-hardening steel round bars have good machinability. This means that they can be easily shaped, cut, and formed into various components or parts without compromising their strength or performance. This makes them highly versatile and suitable for use in a wide range of manufacturing processes. Furthermore, oil-hardening steel round bars have excellent dimensional stability. This means that they are resistant to warping, twisting, or shrinking under different temperature conditions. This property ensures that the components or parts made from these bars maintain their original shape and dimensions, even when exposed to extreme temperature variations. Lastly, oil-hardening steel round bars are relatively cost-effective compared to other types of steel. They provide a balance between high performance and affordability, making them a popular choice in various industries. Overall, the advantages of using oil-hardening steel round bars lie in their excellent wear resistance, high strength and toughness, good machinability, dimensional stability, and cost-effectiveness. These properties make them a reliable and versatile material for a wide range of applications.
- Q:Can steel round bars be used for making architectural or decorative elements?
- Yes, steel round bars can definitely be used for making architectural or decorative elements. Steel round bars have various advantages that make them suitable for such applications. Firstly, steel is a durable and strong material, which ensures the longevity and stability of the architectural or decorative element. Additionally, steel round bars can be easily shaped and customized to create intricate designs, making them versatile for various architectural styles and aesthetics. Steel round bars can be used to create features such as railings, balustrades, ornamental gates, sculptures, or even furniture pieces. The smooth and polished surface of the steel round bars also enhances their visual appeal, making them well-suited for decorative purposes. Furthermore, steel is resistant to corrosion, which ensures that the architectural or decorative element will remain intact and aesthetically pleasing even in outdoor or high-moisture environments. In summary, steel round bars are a suitable and popular choice for creating architectural or decorative elements due to their durability, versatility, and visual appeal.
- Q:What are the advantages of using nickel-manganese alloy steel round bars?
- There are several advantages of using nickel-manganese alloy steel round bars in various applications. Firstly, nickel-manganese alloy steel round bars offer excellent strength and toughness. The addition of nickel and manganese enhances the overall strength and durability of the steel, making it suitable for heavy-duty applications that require high strength and resistance to wear and tear. This makes the alloy steel round bars ideal for industries such as construction, automotive, and manufacturing. Secondly, nickel-manganese alloy steel round bars have excellent corrosion resistance properties. The nickel content in the alloy provides exceptional resistance to corrosion, making it suitable for applications in harsh environments or where exposure to corrosive substances is common. This corrosion resistance extends the lifespan of the round bars and reduces the need for frequent maintenance or replacement. Another advantage of using nickel-manganese alloy steel round bars is their excellent heat resistance. The alloy steel can withstand high temperatures without losing its structural integrity, making it suitable for applications that involve exposure to extreme heat or thermal cycles. This heat resistance property makes the round bars ideal for use in industries such as aerospace, power generation, and oil and gas. Furthermore, nickel-manganese alloy steel round bars offer good weldability and machinability. The alloy's composition allows for easy welding and machining, enabling manufacturers to fabricate components or structures with ease. This versatility in processing makes the round bars highly adaptable to different manufacturing processes and requirements. Additionally, nickel-manganese alloy steel round bars have good ductility and formability. The alloy's composition allows it to be easily shaped or formed into various configurations without sacrificing its structural integrity. This formability makes it suitable for applications that require complex shapes or intricate designs. Overall, the advantages of using nickel-manganese alloy steel round bars include excellent strength, corrosion resistance, heat resistance, weldability, machinability, and formability. These properties make the round bars a reliable and versatile choice for a wide range of applications in various industries.
- Q:How many tons of pressure can the round steel of 70 inches bear?
- As the diameter of about 11.5 cm diameter 180 cm long in the middle of the force which kind of force will be smaller if the curvature is hollow capability hollow wall thickness to achieve much greater strength than solid to do not understand what the best please say a little more thank you good answer is a plus
- Q:How do you measure the straightness tolerance of a steel round bar?
- To determine the straightness tolerance of a steel round bar, various methods can be employed based on the desired level of accuracy and precision. Below are several commonly used techniques: 1. Visual Inspection: This straightforward approach involves visually examining the bar for any noticeable deviations from straightness. Placing the bar on a flat surface allows for the detection of bends or curves along its length. However, it is worth noting that this method is subjective and may not yield precise measurements. 2. Straightedge Method: Using a straightedge such as a ruler or precision straightedge, one can assess the presence of gaps or spaces between the straightedge and the bar's surface. This method offers a higher level of accuracy but can still be influenced by human error. 3. Dial Indicator Method: By utilizing a dial indicator, a precise measuring tool, the straightness tolerance can be measured. Fixing the dial indicator to a stationary point and moving it along the length of the bar enables the identification of any deviations from a straight line. This method provides more precise measurements and can quantify the straightness tolerance in specific units like inches or millimeters. 4. Laser Measurement: Laser systems, such as laser alignment devices, serve as an effective means of measuring the straightness tolerance of a steel round bar. These systems project a straight line onto the bar's surface using lasers and then analyze any deviations from this line. Laser measurement offers highly accurate and repeatable results, making it suitable for applications requiring strict tolerances. It is essential to consider the required level of accuracy, the size of the round bar, and the available resources and equipment when selecting a measurement method. It is also advisable to consult industry standards and guidelines to ensure compliance with specific tolerances and requirements relevant to your 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:What is the difference between steel and flat steel, round steel and steel?
- On the whole, the square section is square, flat section is rectangular, steel surface after finishing the round steel or steel wire (also called steel, silver bar).
- Q:Are steel round bars suitable for marine environments?
- Yes, steel round bars can be suitable for marine environments, but it depends on the specific type of steel used and the conditions of the marine environment. Stainless steel is often the preferred choice for marine applications due to its excellent corrosion resistance properties. Stainless steel contains chromium, which forms a protective layer on the surface of the steel, preventing corrosion and rusting. However, not all steel round bars are suitable for marine environments. Carbon steel, for example, is more susceptible to corrosion in marine environments, especially in the presence of saltwater. Carbon steel should be carefully protected with coatings or treatments to prevent corrosion. Additionally, the conditions of the marine environment also play a significant role in determining the suitability of steel round bars. Factors such as the salinity of the water, exposure to chemicals, temperature variations, and physical stress can affect the corrosion resistance of steel. In highly corrosive marine environments, it is advisable to use specialized marine-grade stainless steel or other corrosion-resistant alloys. Ultimately, it is crucial to select the appropriate grade of steel and consider additional protective measures, such as coatings or galvanization, to enhance the durability and longevity of steel round bars in marine environments.
- Q:Round bars and ribbed stirrups are much better
- Hot rolled ribbed steel bar with high strength, suitable for large component high-rise buildings under gravity loads, but also because of its surface shape can provide grip and end without hook, the corresponding anchorage length is short, the material.
- Q:What is the maximum chromium content allowed for steel round bars?
- The allowable chromium content in steel round bars is determined by the grade or specification of the steel. Typically, the chromium content in these bars can span from 0.15% to 30%, although this range may vary depending on the desired properties and intended application of the steel. Stainless steel grades often exhibit higher chromium content as they are renowned for their resistance to corrosion. To ascertain the maximum allowable chromium content for particular steel round bars, it is crucial to refer to the pertinent industry standards or specifications.
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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
OKorder Financial Service
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