AISI SAE4140 Alloy Structural Steel Round Bar SCM440
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 100000 m.t./month
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Quality Product, Order Online Tracking, Timely Delivery
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Credit Rating, Credit Services, Credit Purchasing
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Specification
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,CE
Thickness:
as required
Length:
as required
Net Weight:
as required
AISI SAE4140 Alloy Structural Steel Round Bar SCM440
1 Standards and Chemical Composition:
GB-China | AISI-America | DIN-Germany | JIS-Japan |
42CrMo | 4140 | 1.7225 42CrMo4 | SCM440 |
Grade | C | Si | Mn | P | S | Cr | Mo |
SAE4140 | 0.38/0.43 | 0.15/0.35 | 0.75/1.00 | ≤0.035 | ≤0.035 | 0.80/1.10 | 0.15/0.25 |
2 Mechanical Property:
Strength of extension | 1080MPA |
Yield point | 930MPA |
Elongation | 12% |
Contractibility rate | 45% |
Impacting energy | 63J |
3 Brief Introduction:
Dimension | 14-350mm |
Length | 2-13m or as per your request |
Delivery condition | Hot rolled |
Heat Treatment | Normalizing, Annealing, Quenching |
Packing | Standard seaworthy packing or according to your requirements |
FAQ
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?
We are 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?
We provide 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: Difference between cold drawn round steel and round steel
- The free torsion rigidity of hot rolled steel is higher than that of cold rolled steel, so the torsion resistance of hot rolled steel is better than that of cold rolled steel.
- Q: How do you check the quality of a steel round bar?
- Several factors need to be taken into account when checking the quality of a steel round bar. Firstly, it is crucial to assess the dimensions of the bar. This involves measuring its diameter, length, and straightness. Any deviation from the specified dimensions could indicate a lower quality bar. Next, it is important to inspect the surface condition of the steel round bar. It should be free from visible defects such as cracks, pits, or surface irregularities. Additionally, the surface should be smooth and without significant roughness or burrs. Moreover, the chemical composition of the steel round bar must be examined. This can be done through spectroscopic analysis or other testing methods. The composition should meet the required standards and specifications, as any deviations can impact the bar's strength and durability. Another crucial aspect to consider is the mechanical properties of the steel round bar. This involves testing its tensile strength, yield strength, and elongation. Specialized machines can be used for these tests to ensure that the bar meets the necessary strength requirements. Additionally, non-destructive testing methods such as ultrasonic testing or magnetic particle inspection can be employed to identify any internal or surface defects that may affect the bar's quality. Furthermore, it is essential to verify the bar's compliance with industry standards and certifications. This includes checking if the steel round bar meets the specifications set by organizations like ASTM International or ISO. Lastly, consulting reputable suppliers or manufacturers with a proven track record in producing high-quality steel round bars is advisable. They can provide documentation, certifications, and test reports to validate the quality of their products. To summarize, evaluating the dimensions, surface condition, chemical composition, mechanical properties, compliance with standards, and supplier's reputation are key steps in checking the quality of a steel round bar. By thoroughly examining these factors, one can ensure the reliability and performance of the steel round bar for its intended applications.
- Q: What is the difference between a circle and round steel continuous casting
- The first two density is not the same, the round billet continuous casting billet is molten steel into round billet crystallizer, after two cold water cooling, solidification formation, density is small; bar is formed by the billet or round billet rolled steel products, good density, better mechanical properties than the same size of billet. Second, round billet is the raw material for steel rolling, and the bar is the final product sold as steel.
- Q: What are the different types of steel round bar alloys for improved machinability?
- There are several types of steel round bar alloys that are known for their improved machinability. Some common alloys include free-machining steel alloys such as 12L14, 1215, and 1144. These alloys contain higher levels of sulfur, which helps break up the chips during machining and improves the overall machinability of the steel. Additionally, there are also stainless steel alloys such as 303 and 416, which are specifically designed for improved machinability and are often used in applications where corrosion resistance is required.
- Q: How do steel round bars compare to titanium round bars?
- Steel round bars and titanium round bars have different properties and characteristics that make them suitable for different applications. Here is a comparison between the two: 1. Strength: Titanium round bars have a higher strength-to-weight ratio than steel round bars. This means that titanium can withstand higher loads and stresses while being lighter in weight compared to steel. However, steel round bars are generally stronger and more rigid than titanium, making them suitable for heavy-duty applications that require high strength. 2. Corrosion Resistance: Titanium round bars are highly resistant to corrosion, even in harsh environments such as saltwater. Steel, on the other hand, is susceptible to corrosion and requires additional protective measures (such as coatings or galvanization) to prevent rusting. Therefore, titanium round bars are preferred in applications where corrosion resistance is essential. 3. Density: Titanium round bars have a lower density compared to steel round bars. This low density makes titanium ideal for applications where weight reduction is crucial, such as aerospace and automotive industries. Steel round bars, with their higher density, are typically used in applications where weight is less of a concern. 4. Temperature Resistance: Titanium round bars have excellent heat resistance, retaining their mechanical properties at high temperatures. Steel round bars, however, can lose their strength and become brittle when exposed to high temperatures. Therefore, titanium round bars are suitable for applications that require elevated temperature resistance. 5. Cost: Steel round bars are generally more affordable than titanium round bars. Titanium is an expensive metal due to its scarcity and complex extraction process. The cost difference between the two materials can be significant, making steel round bars more favorable for budget-conscious projects. In conclusion, the choice between steel round bars and titanium round bars depends on the specific requirements of the application. Steel is preferred for its superior strength and affordability, while titanium offers advantages such as high strength-to-weight ratio, corrosion resistance, temperature resistance, and lower density.
- Q: What are the advantages of using tungsten-alloy steel round bars?
- Tungsten-alloy steel round bars have become a popular choice in various industries due to their numerous advantages over other materials. Firstly, their exceptional strength and durability make them highly resistant to wear, deformation, and fatigue. By adding tungsten to the steel composition, the bars become significantly harder and tougher, enabling them to withstand heavy loads and high-pressure applications. This makes them ideal for industries such as aerospace, automotive, and construction. Another advantage of these round bars is their excellent heat resistance. Tungsten has one of the highest melting points among all elements, making it perfect for applications involving extreme temperatures. Whether it's furnace parts, cutting tools, or high-speed machinery, the heat resistance of tungsten-alloy steel round bars ensures that they maintain their structural integrity and performance in demanding environments. This reduces the risk of deformation or failure. Furthermore, these round bars possess superior corrosion resistance. The inclusion of tungsten in the steel alloy creates a protective oxide layer on the surface, acting as a barrier against corrosive elements, moisture, and chemicals. This corrosion resistance makes tungsten-alloy steel round bars highly suitable for applications in marine environments, chemical processing plants, and the oil and gas industry, where exposure to corrosive substances is common. Additionally, these round bars offer excellent machinability. Their hardness and toughness make them easy to shape, cut, and drill, allowing for precise machining and tight tolerances. This makes tungsten-alloy steel round bars suitable for manufacturing intricate components and parts that require high precision and accuracy. Lastly, the high density of tungsten-alloy steel round bars gives them unique properties, such as improved radiation shielding capabilities. This makes them invaluable in industries where radiation protection is crucial, such as nuclear power plants, medical equipment, and aerospace applications. In conclusion, the advantages of using tungsten-alloy steel round bars include exceptional strength and durability, excellent heat resistance, superior corrosion resistance, excellent machinability, and high density for radiation shielding. These advantages make tungsten-alloy steel round bars a reliable and versatile choice for various industries, ensuring optimal performance and longevity in challenging environments.
- Q: Can steel round bars be used for making steering components?
- Indeed, it is possible to utilize steel round bars in the production of steering components. The utilization of steel as a material for steering system components is quite prevalent owing to its remarkable strength and resilience. By machining or forging steel round bars, one can fashion them into diverse shapes and sizes to fabricate steering components like steering shafts, tie rods, and drag links. These components necessitate the capability to endure the forces and pressures exerted upon them during steering, and steel's properties render it suitable for this purpose. Moreover, steel is effortlessly obtainable and cost-efficient, rendering it a favored option for the production of steering components in numerous sectors, including automotive and aerospace.
- Q: What are the advantages of using boron-alloy steel round bars?
- There are several advantages of using boron-alloy steel round bars in various applications. Firstly, boron-alloy steel has significantly higher strength compared to traditional carbon steel. This increased strength allows for the construction of more lightweight and durable structures, reducing material costs and improving overall efficiency. Additionally, boron-alloy steel round bars exhibit excellent hardenability, which means they can be heat-treated to achieve desired properties such as increased hardness and wear resistance. This makes them ideal for use in demanding applications where high strength and durability are required, such as in the automotive and construction industries. Another advantage of boron-alloy steel round bars is their enhanced weldability. They can be easily welded without sacrificing their mechanical properties, allowing for seamless integration into various fabrication processes. This not only saves time and effort during assembly but also ensures the structural integrity of the final product. Furthermore, boron-alloy steel round bars offer excellent resistance to abrasion and corrosion, making them suitable for use in harsh environments or applications where exposure to chemicals or moisture is common. This extends the lifespan of the material and reduces the need for frequent repairs or replacements, resulting in cost savings and improved productivity. Lastly, boron-alloy steel round bars are readily available and cost-effective compared to other high-strength steel alternatives. Their wide availability makes them a viable option for a range of applications, from manufacturing machinery to constructing infrastructure. In summary, the advantages of using boron-alloy steel round bars include higher strength and durability, improved hardenability, enhanced weldability, resistance to abrasion and corrosion, and cost-effectiveness. These benefits make them an excellent choice for various industries where lightweight, strong, and long-lasting materials are required.
- Q: The 8 thread can replace the beam stirrups by steel
- That's fine, but it's not necessary. It's more expensive. Of course, there's no substitute for steel bars on the site.
- Q: Can steel round bars be used in the production of fasteners?
- Yes, steel round bars can be used in the production of fasteners. Steel round bars can be machined, threaded, and cut to the required length to create various types of fasteners, such as bolts, screws, and studs. The strength and durability of steel make it an ideal material for fasteners that need to withstand high loads and provide secure fastening in various applications.
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AISI SAE4140 Alloy Structural Steel Round Bar SCM440
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 5 m.t.
- Supply Capability:
- 100000 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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