JIS Hot Rolled Structural Steel Bar SCM440
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 50000 m.t./month
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Specification
JIS Hot Rolled Structural Steel Bar SCM440
Product Description of JIS Hot Rolled Structural Steel Bar SCM440
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 JIS Hot Rolled Structural Steel Bar SCM440
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 JIS Hot Rolled Structural Steel Bar SCM440
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 JIS Hot Rolled Structural Steel Bar SCM440
Packing and Delivery:
Packing in bundle package, or as customer's requirements.
Delivery Detail: 45 days after receiving the deposit.
Usage and Applications of JIS Hot Rolled Structural Steel Bar SCM440
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 is the difference between a polished and a hot rolled steel round bar?
- The main difference between a polished and a hot rolled steel round bar lies in their manufacturing processes and the resulting surface finish. Hot rolled steel round bars are produced by heating a steel billet or ingot to high temperatures and then rolling it into the desired shape, typically a round bar. This process results in a rough and uneven surface finish with mill scale and imperfections. The hot rolled bars are generally used for applications where surface finish is not critical, such as structural components, machinery parts, and construction materials. On the other hand, polished steel round bars undergo additional processing to achieve a smooth and shiny surface finish. After the hot rolling process, the bars are processed through various grinding and polishing techniques to remove the mill scale, surface imperfections, and achieve a uniform finish. This results in a refined and aesthetically pleasing surface that is suitable for applications where appearance and visual appeal matter, such as decorative items, furniture, and architectural components. In addition to the surface finish, the mechanical properties of the two types of steel round bars can also differ. The hot rolled bars generally have a rougher surface and may exhibit some residual stresses, while the polished bars have a smoother surface and reduced internal stresses. However, the overall mechanical properties, such as strength and hardness, are primarily determined by the grade and composition of the steel used, rather than the manufacturing process or surface finish. In summary, the difference between a polished and a hot rolled steel round bar lies in their surface finish. Hot rolled bars have a rough and uneven surface with mill scale and imperfections, while polished bars undergo additional processing to achieve a smooth and shiny finish. The choice between the two depends on the specific application and the desired appearance of the final product.
- Q: How do you calculate the weight of a steel round bar based on its length and volume?
- To calculate the weight of a steel round bar based on its length and volume, you would need to know the density of steel, which is approximately 7.85 grams per cubic centimeter. First, calculate the volume of the round bar using the formula for the volume of a cylinder (pi * radius squared * length). Then, multiply the volume by the density to obtain the weight of the steel round bar.
- Q: Are steel round bars used in the aerospace industry?
- Yes, steel round bars are commonly used in the aerospace industry. Steel round bars are known for their high strength, durability, and resistance to corrosion, making them ideal for use in aircraft components and structures. These round bars are often used in the manufacturing of landing gears, engine mounts, structural frames, and other critical parts of an aircraft. Additionally, steel round bars are also used in the production of aerospace fasteners, such as bolts and screws, due to their ability to withstand high stress and provide a secure connection. Overall, steel round bars play a crucial role in ensuring the safety and reliability of aerospace systems.
- Q: What is the elasticity of a steel round bar?
- The ability of a steel round bar to return to its original form and size after external forces or deformations is referred to as its elasticity. Steel is renowned for its high elastic modulus, indicating its resistance to deformation and ability to withstand significant stress before permanently bending or breaking. The composition of a steel round bar, specifically its carbon content and the inclusion of other alloying elements, determines its elasticity. Generally, steel with higher carbon content possesses greater elasticity and can be more easily manipulated without enduring permanent deformation. Nonetheless, it is noteworthy that factors like temperature, strain rate, and any defects or imperfections in the material can also influence the elasticity of a steel round bar.
- Q: What is the corrosion resistance of steel round bars?
- The corrosion resistance of steel round bars depends on the type of steel and the environmental conditions they are exposed to. Generally, stainless steel round bars offer excellent corrosion resistance due to the presence of chromium, which forms a protective oxide layer on the surface of the steel. This oxide layer acts as a barrier, preventing further corrosion from occurring. However, carbon steel round bars are more susceptible to corrosion, especially in environments with high moisture or exposure to corrosive substances. In these cases, additional protective measures such as coatings or galvanizing may be required to enhance their corrosion resistance. It's important to note that the performance of steel round bars in corrosive environments also depends on various factors like temperature, pH level, and the presence of other elements or chemicals. Therefore, it is recommended to consider the specific application and consult with corrosion experts to determine the most suitable steel grade and corrosion protection measures for your needs.
- Q: What are the advantages of using nickel-zinc alloy steel round bars?
- There are several advantages of using nickel-zinc alloy steel round bars. Firstly, nickel-zinc alloy steel has a high strength-to-weight ratio, making it an excellent choice for applications where strength and durability are important. This allows for the construction of lighter structures without sacrificing strength or performance. Secondly, nickel-zinc alloy steel round bars have superior corrosion resistance compared to other types of steel. This makes them ideal for use in harsh environments where exposure to moisture, chemicals, or extreme temperatures may occur. The corrosion resistance properties of nickel-zinc alloy steel also contribute to its longevity and ability to withstand the test of time. Additionally, nickel-zinc alloy steel has excellent weldability and machinability, making it easy to work with and manipulate into various shapes and forms. This versatility allows for the creation of complex designs and structures, making it a popular choice in the construction and manufacturing industries. Furthermore, nickel-zinc alloy steel round bars have good thermal and electrical conductivity properties. This makes them suitable for applications that require the efficient transfer of heat or electricity, such as in the production of electrical components or heat exchangers. Lastly, nickel-zinc alloy steel is known for its high resistance to fatigue and wear, making it suitable for applications that involve repetitive or high-stress operations. This ensures that structures or components made from nickel-zinc alloy steel will maintain their performance and integrity over an extended period of time. In summary, the advantages of using nickel-zinc alloy steel round bars include high strength-to-weight ratio, superior corrosion resistance, excellent weldability and machinability, good thermal and electrical conductivity, and high resistance to fatigue and wear. These properties make nickel-zinc alloy steel a reliable and versatile material for a wide range of applications.
- Q: Can steel round bars be used in the manufacturing of kitchenware?
- Yes, steel round bars can be used in the manufacturing of kitchenware. Steel is a durable and versatile material that is commonly used in the production of kitchen utensils and cookware. Steel round bars can be shaped and molded into various kitchenware items such as pots, pans, knives, spoons, and forks. The strength and heat resistance of steel make it suitable for cooking and food preparation purposes. Additionally, steel is easy to clean, hygienic, and resistant to corrosion, making it ideal for use in kitchenware.
- Q: What are the different cutting methods for steel round bars?
- There are several cutting methods for steel round bars, including sawing, shearing, flame cutting, and abrasive cutting.
- Q: What are the advantages of using nickel-lead alloy steel round bars?
- There are several advantages of using nickel-lead alloy steel round bars: 1. Enhanced corrosion resistance: Nickel-lead alloy steel round bars exhibit excellent corrosion resistance, making them suitable for use in various industries, especially those dealing with harsh environments or corrosive substances. This property ensures the longevity and durability of the bars, reducing the need for frequent replacements. 2. Superior strength and toughness: The inclusion of nickel and lead in the alloy composition enhances the strength and toughness of the steel round bars. This makes them highly resistant to deformation, cracking, and wear, even under high-stress conditions. As a result, these bars can withstand heavy loads and impacts, making them ideal for applications that require robust and reliable materials. 3. Improved machinability: Nickel-lead alloy steel round bars possess excellent machinability, allowing for easy cutting, drilling, and shaping during fabrication processes. The alloy's composition enables efficient chip evacuation and reduces tool wear, resulting in increased productivity and cost-effectiveness in manufacturing operations. 4. Thermal stability: Nickel-lead alloy steel round bars exhibit excellent thermal stability, making them suitable for applications that involve high temperatures or extreme thermal cycling. These bars can withstand thermal expansion and contraction without experiencing significant dimensional changes, ensuring dimensional accuracy and structural integrity over time. 5. Low coefficient of friction: The addition of lead to the alloy composition contributes to a low coefficient of friction, reducing friction and wear between the bars and other surfaces. This property is particularly valuable in applications where minimal wear and lubrication are essential, such as in bearings or sliding components. 6. Electrical conductivity: Nickel-lead alloy steel round bars possess good electrical conductivity, making them suitable for applications that require efficient electrical current flow. This property is beneficial in electrical connectors, circuit breakers, and other electrical components, where reliable conductivity is crucial. In summary, the advantages of using nickel-lead alloy steel round bars include enhanced corrosion resistance, superior strength, improved machinability, thermal stability, low friction coefficient, and good electrical conductivity. These properties make them an excellent choice for a wide range of applications in various industries.
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JIS Hot Rolled Structural Steel Bar SCM440
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 100 m.t.
- Supply Capability:
- 50000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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