S355J2 Steel Round Bar Alloy Steel Round Bar 4140
- 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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Item specifice
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round,Rectangular,Oval,LTZ
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
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
S355J2 Steel Round Bar Alloy Steel Round Bar 4140
Product Description of S355J2 Steel Round Bar Alloy Steel Round Bar 4140
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 S355J2 Steel Round Bar Alloy Steel Round Bar 4140
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 S355J2 Steel Round Bar Alloy Steel Round Bar 4140
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 S355J2 Steel Round Bar Alloy Steel Round Bar 4140
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of S355J2 Steel Round Bar Alloy Steel Round Bar 4140
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 different types of steel used for round bars?
- There are several different types of steel used for round bars, including carbon steel, alloy steel, stainless steel, and tool steel. Each type has its own unique composition and properties, making them suitable for various applications and industries.
- Q:Can steel round bars be coated or painted?
- Steel round bars have the capability to undergo coating or painting. The purpose of coating or painting steel round bars is manifold; it prevents corrosion, enhances aesthetics, and provides additional protection against environmental factors. There are several methods available for applying coatings and paints to steel round bars, including powder coating, electroplating, or wet paint application. These processes involve first preparing the surface of the steel round bar by removing any existing rust or contaminants, and then applying the chosen coating or paint. The selection of the appropriate coating or paint depends on the specific requirements of the steel round bars, such as their intended use, environmental conditions, and desired appearance. By coating or painting steel round bars, their lifespan can be significantly extended, their visual appeal can be improved, and their durability can be ensured in a wide range of applications.
- Q:Are steel round bars available in different lengths?
- Indeed, there is a variety of lengths for steel round bars. These bars are designed in diverse lengths to cater to various needs and applications. The range of lengths may differ depending on the supplier or manufacturer. Typically, steel round bars are commonly available in lengths between 6 and 12 feet. However, it is also possible to acquire custom lengths through special requests. This wide range of options grants more flexibility in construction and fabrication projects, as it facilitates the ability to cut or modify the bars according to specific requirements.
- Q:How are steel round bars used in the manufacturing of conveyor systems?
- Due to their durability and strength, steel round bars are commonly utilized in the manufacturing of conveyor systems. These bars serve as integral components for conveyor belts, rollers, and pulleys. In the realm of conveyor systems, it is customary to employ steel round bars in the construction of the framework or support structure. These bars form the main body of the conveyor, ensuring stability and strength to withstand the weight and movement of transported materials. To illustrate, steel round bars are frequently utilized in the creation of the support structure for conveyor belts. These bars are typically bent or welded into circular shapes, forming the rollers or idlers that provide support for the conveyor belt. The bars are evenly spaced along the conveyor's length, establishing a stable platform for the belt's movement. Moreover, steel round bars are also employed in the fabrication of the pulleys that drive the conveyor belt. These pulleys are usually fashioned from a solid steel round bar, which is machined to the desired size and shape. Once mounted on the conveyor system, the pulleys are connected to a motor or other power source, enabling them to rotate and move the conveyor belt. In essence, steel round bars assume a vital role in the manufacturing of conveyor systems by furnishing the necessary strength and stability for efficient material handling. Their durability and resistance to wear and tear make them an ideal choice for the demanding conditions found in conveyor applications.
- Q:What is the minimum yield strength of steel round bars?
- The minimum yield strength of steel round bars can vary depending on the specific grade and type of steel being used. However, in general, most steel round bars have a minimum yield strength of 36,000 psi (pounds per square inch) or 250 megapascals (MPa). This minimum yield strength is typically required to ensure that the steel round bars have sufficient strength and durability to withstand applied loads and prevent deformation or failure. It is important to note that different applications may require steel round bars with higher yield strengths to meet specific performance requirements.
- Q:What are the advantages of using nitriding steel round bars?
- There are several advantages of using nitriding steel round bars. Firstly, nitriding steel round bars have a high surface hardness. The nitriding process involves the diffusion of nitrogen into the surface layer of the steel, which creates a hard nitride layer. This significantly improves the wear resistance and durability of the round bars, making them suitable for applications that involve heavy loads or abrasive environments. Secondly, nitriding steel round bars have improved fatigue strength. The nitride layer formed during the nitriding process also enhances the fatigue resistance of the steel. This means that the round bars are able to withstand repeated loading and high-stress conditions without experiencing premature failure. Additionally, nitriding steel round bars have excellent corrosion resistance. The nitride layer acts as a barrier against corrosion, protecting the underlying steel from being attacked by corrosive elements such as moisture, chemicals, or saltwater. This makes them ideal for use in harsh environments where corrosion is a concern, such as marine or chemical industries. Furthermore, nitriding steel round bars have a high surface hardness retention at elevated temperatures. Unlike other surface hardening processes, nitriding does not rely on the formation of a thin coating on the surface of the steel. Instead, it modifies the surface layer of the steel, resulting in a hardened layer that remains stable even at high temperatures. This allows the round bars to maintain their hardness and mechanical properties even in demanding heat-intensive applications. Overall, the advantages of using nitriding steel round bars include high surface hardness, improved fatigue strength, excellent corrosion resistance, and high surface hardness retention at elevated temperatures. These properties make them a preferred choice for various applications in industries such as automotive, aerospace, manufacturing, and construction.
- Q:What are the different grades of steel used in round bars?
- Round bars are made from various grades of steel, each possessing its own distinct properties and applications. Some commonly utilized grades are as follows: 1. Grade 1018 - Mild Steel: This steel has low carbon content, enabling easy machinability and weldability. It finds extensive use in general engineering fields, such as construction, automotive, and machinery. 2. Grade 1045 - Carbon Steel: Known for its medium carbon composition, this steel exhibits high tensile strength and excellent wear resistance. It is commonly employed in applications involving shafts, axles, gears, and other high-stress components. 3. Grades 4140 and 4340 - Alloy Steel: Alloy steels incorporate additional elements like chromium, molybdenum, or nickel to enhance their mechanical properties. These grades offer exceptional strength, toughness, and wear resistance. They are frequently employed in applications that demand high durability and strength, such as automotive parts, aircraft components, and industrial machinery. 4. Grades 304 and 316 - Stainless Steel: Stainless steel is a corrosion-resistant alloy containing a minimum of 10.5% chromium. It finds wide usage in industries such as food processing, chemicals, and medicine due to its remarkable resistance to corrosion, heat, and its appealing aesthetic. 5. Grades A2 and D2 - Tool Steel: Tool steels are designed specifically to possess high hardness, wear resistance, and toughness. They are commonly employed in the manufacture of cutting tools, dies, and molds. These examples represent just a fraction of the diverse range of steel grades used in round bars. The selection of the appropriate grade depends on specific requirements for the application, including strength, corrosion resistance, heat resistance, and machinability.
- Q:Can steel round bars be used in high-temperature applications?
- Yes, steel round bars can be used in high-temperature applications as they have excellent thermal resistance and can withstand elevated temperatures without losing their structural integrity.
- Q:How do steel round bars compare to fiberglass or composite bars?
- Steel round bars and fiberglass or composite bars exhibit distinct differences in their properties and applications. Strength and Durability: Steel round bars possess exceptional strength and durability, boasting a high tensile strength that enables them to withstand heavy loads and stress. Conversely, fiberglass or composite bars possess a favorable strength-to-weight ratio but generally lack the same level of strength as steel bars. They may be more susceptible to bending or breaking under high pressure or impact. Weight: A significant disparity exists in weight between steel bars and fiberglass or composite bars. This contrast can prove advantageous in certain applications where additional weight is necessary for stability or to counteract external forces. Conversely, situations that prioritize weight reduction, such as in the aerospace or automotive industries, favor fiberglass or composite bars due to their lightweight nature. Corrosion Resistance: Steel bars are prone to corrosion, particularly when exposed to moisture or harsh environments. Consequently, they necessitate regular maintenance and protective coatings to prevent rusting. In contrast, fiberglass or composite bars inherently possess corrosion-resistant properties, rendering them suitable for applications prevalent in marine or chemical industries that often involve exposure to corrosive elements. Electrical Conductivity: Steel round bars boast electrical conductivity, which proves advantageous in specific applications requiring electrical grounding or conductivity. Fiberglass or composite bars, by contrast, are non-conductive and preferred in situations necessitating electrical insulation, such as in electrical installations or sensitive electronic systems. Cost: Steel bars generally offer a more cost-effective solution compared to fiberglass or composite bars. The abundance of raw materials for steel production contributes to their affordability in most cases. Conversely, fiberglass or composite bars involve intricate manufacturing processes and the utilization of specialized materials, leading to higher production costs. In conclusion, steel round bars are favored for their strength, durability, and cost-effectiveness, finding widespread use in construction, manufacturing, and infrastructure projects. Conversely, fiberglass or composite bars present advantages in weight reduction, corrosion resistance, and electrical insulation, frequently finding application in industries that prioritize these properties. The selection between the two hinges upon the specific requirements and conditions of the project or industry.
- Q:How do you calculate the weight of a steel round bar based on its length and diameter?
- To calculate the weight of a steel round bar based on its length and diameter, you can use the following equation: Weight = (π/4) x (Diameter^2) x Length x Density Here, π represents the mathematical constant pi (approximately 3.14159), Diameter is the measurement of the steel round bar across its widest point, Length is the overall length of the bar, and Density is the density of steel, which is typically around 7850 kilograms per cubic meter. To calculate the weight, first square the diameter, then multiply it by the length and density. Finally, multiply the result by π/4 to obtain the weight of the steel round bar in the desired units (typically kilograms or pounds). It's important to note that this equation assumes the steel round bar is a solid cylinder with a uniform diameter. If the bar has any variations or irregularities, the weight calculated using this equation may not be entirely accurate.
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S355J2 Steel Round Bar Alloy Steel Round Bar 4140
- 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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