AISI 5140 Alloy Steel Round Bars System 1

AISI 5140 Alloy Steel Round Bars System 2

AISI 5140 Alloy Steel Round Bars System 3

AISI 5140 Alloy Steel Round Bars

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 120000 m.t./month

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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.37-0.44 %	Tensile strength(MPA)	≥980(100)
Si	0.17-0.37 %	Yield strength (MPA)	≥785(80)
Mn	0.50-0.80 %	Elongation (δ5/%)	≥9
Cr	0.80-1.10 %	Reduction in Area (ψ/%)	≥45
Ni	≤0.30 %	Impact (J)	≥ 47
P	≤0.035 %	Impact toughness value αkv (J/cm2)	≥59(6)
S	≤0.035 %	Hardness	≤207HB
Cu	≤0.030 %

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

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.

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?

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.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: What are the different types of steel round bar alloys for improved hardness and strength?: Improved hardness and strength are characteristics associated with various types of steel round bar alloys. Some commonly used alloys renowned for these qualities include: 1. Carbon Steel: Exceptional strength and hardness make carbon steel a popular choice. Its higher carbon content enhances durability and resistance to wear and tear. 2. Alloy Steel: Combining carbon steel with elements like manganese, nickel, chromium, or vanadium results in alloy steel. These additions enhance hardness and strength, making it suitable for applications requiring high tensile strength and toughness. 3. Stainless Steel: With a minimum chromium content of 10.5%, stainless steel is a corrosion-resistant alloy. Chromium's addition improves hardness and strength, making it ideal for applications demanding resistance to corrosion, heat, and wear. 4. Tool Steel: Tool steel is tailor-made for manufacturing various tools. It boasts high hardness, wear resistance, and strength. Elements like tungsten, molybdenum, or vanadium are often added to enhance its performance. 5. High-Speed Steel: Developed specifically for high-speed cutting tools like drills and milling cutters, high-speed steel excels in hardness and retains its cutting edge even at high temperatures. 6. Maraging Steel: Maraging steel, a low-carbon, high-nickel alloy, stands out for its exceptional strength, toughness, and resistance to fatigue. It finds applications in industries like aerospace and defense that demand high strength and durability. These examples merely scratch the surface of the steel round bar alloys known for improved hardness and strength. The choice of alloy depends on the intended application and desired properties for the final product.

Q: What are the factors affecting the price of steel round bars?: There are several factors that can affect the price of steel round bars. Some of the key factors include the cost of raw materials used in steel production, such as iron ore and coal. Additionally, factors such as global supply and demand, market competition, and economic conditions can also influence the price of steel round bars. Other factors like transportation costs, energy prices, and government regulations can also play a role in determining the final price of steel round bars.

Q: Can steel round bars be used for construction purposes?: Yes, steel round bars can be used for construction purposes. Steel round bars are commonly used in construction for various applications such as reinforcement in concrete structures, as support for beams and columns, and as structural components in bridges, buildings, and infrastructure projects. The high tensile strength and durability of steel make it an ideal choice for construction purposes, as it can withstand heavy loads, provide stability, and ensure the longevity and safety of the structures. Additionally, steel round bars are versatile and can be easily fabricated and customized to meet specific project requirements. Therefore, steel round bars are widely used in the construction industry due to their excellent mechanical properties, reliability, and cost-effectiveness.

Q: What are the typical yield strengths of different grades of steel round bars?: The specific grade of steel can cause the yield strength of steel round bars to vary. Here are some common yield strengths for different grades of steel round bars: - Mild steel round bars usually have a yield strength of approximately 250 MPa (megapascals) or 36,000 psi (pounds per square inch). - The yield strength of carbon steel round bars can range from 350 to 550 MPa or 50,000 to 80,000 psi. - Compared to mild or carbon steel, alloy steel round bars such as 4140 or 4340 generally have higher yield strengths. The yield strength of these alloys can vary from 550 to 850 MPa or 80,000 to 120,000 psi. - Stainless steel round bars are available in different grades, and their yield strengths can vary accordingly. For instance, austenitic stainless steels like 304 or 316 usually have yield strengths ranging from 200 to 300 MPa or 29,000 to 43,000 psi. Conversely, duplex stainless steels like 2205 or 2507 can have higher yield strengths of 450 to 650 MPa or 65,000 to 95,000 psi. It is important to keep in mind that these values are typical ranges, and the actual yield strength of a specific grade of steel round bar may differ due to factors such as heat treatment, manufacturing process, and other variables. Therefore, it is always advisable to consult the manufacturer's specifications or industry standards for accurate and precise yield strength values of steel round bars.

Q: How are steel round bars used in the mining industry?: Steel round bars are widely used in the mining industry for a variety of applications. One of the most common uses is in the construction and reinforcement of underground support systems. These bars are often used as roof bolts or rock bolts to provide stability and prevent cave-ins or roof falls in underground mines. Steel round bars are also used in the manufacturing of drilling equipment. They are frequently used as drill rods or drill bits, providing the necessary strength and durability to withstand the harsh conditions of drilling in mining operations. These bars are typically heat-treated to increase their hardness and resistance to wear, ensuring their longevity in the drilling process. Another important application of steel round bars in mining is in the production of grinding media for grinding mills. These bars, known as grinding rods, are used to grind and crush ore particles in the milling process. They are made from high-quality steel and have a specific hardness and toughness to effectively break down the ore into smaller particles, facilitating the extraction of valuable minerals. Additionally, steel round bars are used in the construction of conveyor systems in mining operations. They are commonly used as support bars or rollers in conveyor belts, ensuring the efficient transport of mined materials from one location to another. In summary, steel round bars play a crucial role in the mining industry. From providing support and stability in underground mines to manufacturing drilling equipment and grinding media, these bars are essential in various mining processes, contributing to the overall efficiency and productivity of mining operations.

Q: How do steel round bars compare to plastic round bars?: Steel round bars and plastic round bars have several key differences that affect their performance and suitability for different applications. Strength and durability: Steel round bars are known for their exceptional strength and durability, making them ideal for applications requiring high load-bearing capacity. They can withstand heavy loads and resist deformation or breakage. On the other hand, plastic round bars are generally less strong and durable, making them more suitable for lighter applications where strength is not a primary concern. Weight: Steel round bars are significantly heavier than plastic round bars due to the difference in material density. This can be an advantage in some applications where additional weight is desired for stability or balance. Plastic round bars, on the other hand, are lighter and can be advantageous in applications where weight reduction is important, such as in aerospace or automotive industries. Corrosion resistance: Steel round bars are known for their excellent corrosion resistance, particularly when they are made from stainless steel. This makes them suitable for applications in harsh environments or exposed to moisture. Plastic round bars, however, are generally more susceptible to degradation due to exposure to UV radiation, chemicals, or extreme temperatures. Therefore, they may not be as suitable for outdoor or corrosive environments. Versatility: Steel round bars offer a wide range of options in terms of size, shape, and grade. They can be machined, welded, bent, or shaped to suit various applications. Plastic round bars also come in different shapes and sizes, but their versatility is somewhat limited compared to steel. They may not be as easily machined or welded, and their performance can be affected by temperature fluctuations. Cost: Steel round bars are generally more expensive than plastic round bars due to the higher cost of raw materials and manufacturing processes. Plastic round bars, on the other hand, are more affordable and can offer cost savings in certain applications. In summary, steel round bars offer superior strength, durability, and corrosion resistance, making them suitable for heavy-duty applications. Plastic round bars are lighter, more affordable, and can be advantageous in applications where weight reduction is important. Ultimately, the choice between steel and plastic round bars depends on the specific requirements of the application and the trade-offs between strength, weight, cost, and corrosion resistance.

Q: How do steel round bars perform under static or stationary loads?: Steel round bars are known for their exceptional performance under static or stationary loads. Due to their high strength and durability, steel round bars have the ability to withstand heavy weights or forces without undergoing significant deformation or failure. When subjected to static loads, these bars distribute the applied force evenly throughout their structure, ensuring stability and structural integrity. One of the key advantages of steel round bars is their resistance to bending or sagging under static loads. Their inherent stiffness allows them to maintain their shape and prevent any significant deflection, making them ideal for applications where load-bearing capacity is crucial. Moreover, steel round bars possess a high yield strength, which means they can withstand large amounts of stress before permanent deformation occurs. Furthermore, steel round bars exhibit minimal creep under static loads, meaning they maintain their shape and dimensions over time, even when subjected to sustained pressure. This quality is especially important in structures or equipment that are expected to support constant loads for extended periods. Another factor that contributes to the excellent performance of steel round bars under static loads is their resistance to corrosion. Steel is inherently resistant to rust and oxidation, making it suitable for applications in various environments, including those with high humidity or exposure to moisture. In summary, steel round bars are highly reliable and efficient when it comes to handling static or stationary loads. They offer exceptional strength, resistance to deformation, and durability, making them a preferred choice in a wide range of industries, including construction, manufacturing, and infrastructure development.

Q: Are steel round bars suitable for the production of hydraulic cylinders?: Yes, steel round bars are suitable for the production of hydraulic cylinders. Steel is a material known for its strength, durability, and resistance to corrosion, making it an excellent choice for hydraulic applications. Steel round bars are often used in the construction of hydraulic cylinders due to their high tensile strength and ability to withstand heavy loads and pressure. Additionally, steel can be easily machined and welded, allowing for precise manufacturing and customization of hydraulic cylinders. Overall, steel round bars provide the necessary qualities and performance required for the production of hydraulic cylinders.

Q: How do you calculate the load capacity of a steel round bar?: The load capacity of a steel round bar can be calculated using its cross-sectional area and the material's yield strength. The formula for calculating load capacity is Load Capacity = Cross-sectional Area × Yield Strength.

Q: Can steel round bars be used in the shipbuilding industry?: Yes, steel round bars can be used in the shipbuilding industry. They are commonly used for various applications such as structural components, supports, and reinforcement due to their strength, durability, and versatility.

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