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: Can steel round bars be bent or formed into shapes?
- Yes, steel round bars can be bent or formed into shapes. Steel is a highly versatile material with excellent strength and durability, making it suitable for various applications. To bend or form steel round bars, various techniques such as heating, hammering, or using specialized machinery like hydraulic presses or roll benders can be employed. These methods allow the steel bars to be shaped into curves, angles, or specific forms to meet the desired requirements. However, it is important to note that the extent to which a steel round bar can be bent or formed depends on factors such as the diameter, type of steel, and the specific bending/forming technique used.
- Q: What is the elongation of a steel round bar?
- When a tensile force is applied to a steel round bar, its elongation occurs, which is the extent to which it stretches or deforms. This elongation indicates the bar's capacity to endure tension and is commonly stated as a percentage of its original length. The elongation is influenced by various properties of the steel, including its composition, grain structure, and heat treatment. Additionally, factors such as the applied force, temperature, and loading speed impact the elongation. Steel round bars typically demonstrate considerable elongation before reaching their breaking point, which renders them suitable for structural applications demanding both strength and ductility.
- Q: What are the different types of steel round bar surface defects?
- There are several different types of surface defects that can occur on steel round bars. Some of the most common defects include: 1. Scale: This is a thin layer of oxide that forms on the surface of the steel during the manufacturing process. It appears as a rough, flaky or scaly texture and can be easily removed by pickling or abrasive cleaning. 2. Pitting: Pitting is a localized corrosion that appears as small, shallow holes or depressions on the surface of the steel. It is typically caused by exposure to corrosive substances or environments and can weaken the material if left untreated. 3. Surface cracks: These are small, visible cracks that appear on the surface of the steel round bar. They can be caused by various factors such as improper cooling during the manufacturing process, excessive stress, or improper handling. Surface cracks can reduce the structural integrity of the steel and should be carefully inspected and repaired if necessary. 4. Decarburization: This defect occurs when the surface layer of the steel loses its carbon content, leading to reduced hardness and strength. Decarburization is often caused by high temperatures during heat treatment or improper cooling methods. It can be detected through visual inspection or by conducting hardness tests. 5. Lamination: Lamination defects occur when there are layers or flakes within the steel round bar. These layers can cause weakness in the material and compromise its structural integrity. Lamination defects are typically caused by improper rolling or excessive impurities in the steel. 6. Inclusions: Inclusions are foreign materials or impurities that are trapped within the steel during the manufacturing process. They can appear as dark spots, streaks, or irregular shapes on the surface of the round bar. Inclusions can reduce the strength and ductility of the steel and can be caused by factors such as improper raw material quality or inadequate refining processes. It is important to note that surface defects in steel round bars can vary in severity and impact on the material's performance. Regular inspection and quality control measures are essential to identify and rectify any surface defects to ensure the integrity and reliability of the steel round bar.
- Q: Can steel round bars be used in the power generation industry?
- Yes, steel round bars can be used in the power generation industry. Steel round bars possess high strength and durability, making them suitable for various applications within the industry, such as supporting heavy machinery, constructing power plant structures, and manufacturing turbine components. Additionally, steel's resistance to corrosion and ability to withstand extreme temperatures make it an ideal material choice for the power generation industry.
- Q: What are the standard sizes for steel round bars?
- Steel round bars come in various standard sizes, which differ depending on the industry and application at hand. Examples of frequently used standard sizes are 1/4 inch, 3/8 inch, 1/2 inch, 5/8 inch, 3/4 inch, 7/8 inch, 1 inch, 1 1/4 inch, 1 1/2 inch, 1 3/4 inch, 2 inch, 2 1/2 inch, 3 inch, 3 1/2 inch, 4 inch, 4 1/2 inch, 5 inch, 5 1/2 inch, 6 inch, 7 inch, 8 inch, 9 inch, 10 inch, 11 inch, 12 inch, and so forth. These sizes are commonly employed in the construction, manufacturing, and engineering sectors, with slight variations depending on the country or region. It is important to acknowledge that steel round bars can also be customized to specific sizes and lengths in order to meet the particular requirements of a given project.
- Q: How do steel round bars compare to plastic or composite bars?
- Steel round bars have several advantages over plastic or composite bars. Firstly, steel round bars are much stronger and sturdier than plastic or composite bars. They can withstand heavy loads and provide superior structural support. This makes them ideal for applications that require high strength and durability, such as in construction or engineering projects. Secondly, steel round bars have excellent resistance to impact and wear. They can withstand harsh environmental conditions and are less likely to crack, chip, or break compared to plastic or composite bars. This makes steel round bars suitable for heavy-duty applications where abrasion resistance is crucial. Additionally, steel round bars have better heat resistance compared to plastic or composite bars. They can withstand high temperatures without deforming or losing their structural integrity. This makes steel round bars suitable for applications that involve extreme heat, such as in the manufacturing of machinery or equipment. Furthermore, steel round bars are highly versatile and can be easily machined or modified to meet specific requirements. They can be cut, drilled, bent, or welded, allowing for easy customization and adaptability. In contrast, plastic or composite bars may have limitations in terms of customization or modification. However, it is important to note that steel round bars also have some disadvantages compared to plastic or composite bars. Steel is heavier, which can make it more challenging to handle and transport. It can also be more expensive than plastic or composite bars, depending on the specific grade and quality. In conclusion, steel round bars offer superior strength, durability, impact resistance, and heat resistance compared to plastic or composite bars. While they may have some drawbacks such as weight and cost, their overall performance and versatility make them the preferred choice for many applications that require high-performance materials.
- Q: Weight algorithm of round steel
- 1, the appearance is different, round steel appearance of round, no grain without ribs, other steel surface appearance has carved or ribbed, this causes the round bar and concrete bonding force is small, and other steel and concrete bonding force.2 ingredients are different, round steel (grade a steel) belongs to ordinary low carbon steel, and other steel bars are mostly alloy steel. 3 strength, steel and other steel with high strength low strength, namely, diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, and it reinforced the deformation the break before the much smaller.
- Q: Can steel round bars be used for making bearings?
- Steel round bars can indeed be used for making bearings. However, it is important to note that the specific type of steel used, as well as the manufacturing process, play a crucial role in determining the suitability of steel round bars for bearing applications. Bearings are typically subjected to high loads and require good wear resistance, low friction, and high durability. Steel round bars made from high-quality alloy steels, such as chrome steel or stainless steel, are commonly used for bearing manufacturing due to their excellent mechanical properties. These steel round bars undergo specific heat treatment processes, such as quenching and tempering, to enhance their hardness, strength, and wear resistance. Additionally, the round bars are typically machined to precise tolerances to ensure proper fit and alignment within the bearing assembly. It is important to consult with materials and manufacturing experts or refer to industry standards to ensure the appropriate steel round bar material and manufacturing processes are used for bearing applications. This will ensure the best performance, reliability, and longevity of the bearings in various operating conditions.
- Q: Can steel round bars be used for fastener applications?
- Indeed, fastener applications can make use of steel round bars. In various industries, these round bars are frequently employed as fasteners due to their remarkable durability and high strength. By threading, drilling, or machining them, a variety of fasteners, including bolts, screws, and studs, can be fashioned. The outstanding tensile strength and corrosion resistance of steel round bars render them suitable for demanding tasks that necessitate robust and dependable fastening. Moreover, these round bars are easily obtainable in assorted sizes and grades, enabling customization based on precise fastener needs.
- Q: How are steel round bars used in the manufacturing of agricultural implements?
- Due to their durability, strength, and versatility, steel round bars are widely used in the manufacturing of agricultural implements. Typically made of carbon steel, these bars offer excellent resistance to wear and tear, making them ideal for heavy-duty applications in the agricultural industry. Plows, an essential tool for breaking up and turning over soil, heavily rely on steel round bars. These bars are used to construct the plow's main framework, ensuring it can withstand the high levels of force and pressure exerted during tilling. Similarly, harrows, which cultivate the soil after plowing, also benefit from the use of steel round bars. These bars provide the necessary strength to withstand rigorous use without bending or breaking, guaranteeing their longevity and effectiveness. Apart from plows and harrows, steel round bars find common usage in the fabrication of other agricultural implements like cultivators, seeders, and sprayers. These implements require sturdy and durable components to endure the demanding conditions of agricultural operations. Steel round bars provide the strength and structural integrity needed for these implements to perform their intended functions effectively. Furthermore, livestock equipment such as gates, fences, and cattle panels also rely on steel round bars. These components must be strong and robust to contain livestock and withstand their movements and force. Steel round bars fulfill these requirements, ensuring the safety and security of animals and the durability of the equipment. In conclusion, steel round bars play a crucial role in the manufacturing of agricultural implements. Their durability, strength, and versatility make them an ideal choice for creating sturdy and reliable equipment that can withstand the demanding conditions of the agricultural industry.
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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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