Round Steel 5115 Steel Bars

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Material standardized according to	5115 round steel round bar
Unfinished products manufactured	Pipes - profiles - squares
Properties	Excellent mechanical features - good workability on high-speed automatic machines with easy fragmentation of the shavings made by the tool
Typical applications	used for making heavy loading and sectional gear shaft,gear,connecting rod,eccentric shaft,rear axle shaft of car,parts of steam turbine,etc

C	Cr	Si	p	Mn	Ni
0.37~0.45	0.90~1.20	0.17~0.37	≤0.035	0.90~1.20	≤0.030

Quenching Temp	860 ±15 °C
Cool Media	Oil
Tempering Temp	600 ±15 °C
Cooling Media	air

Tensile Strength (MPA)	Yield Strength(MPA)	Elongation(%)	Reduction In Area(%)	Impact Energy(J)	Hardness(HB)
≥1080	≥ 930	≥ 12	≥ 45	≥ 63	≥217

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: How do steel round bars compare to other materials like aluminum or stainless steel?: Steel round bars have several advantages over other materials like aluminum or stainless steel. Firstly, steel round bars are known for their exceptional strength and durability. They have a high tensile strength, making them capable of withstanding heavy loads and extreme conditions. This makes them ideal for applications where strength and resilience are crucial, such as construction, manufacturing, and engineering. Compared to aluminum, steel round bars offer superior strength and hardness. While aluminum is lightweight, it is not as strong as steel, which can be a limiting factor in certain applications. Steel round bars also have a higher resistance to impact and abrasion, making them more suitable for heavy-duty applications that require resistance to wear and tear. In terms of comparing steel round bars to stainless steel, it's important to note that stainless steel is an alloy that contains steel as its main component. Stainless steel is known for its corrosion resistance, making it an excellent choice for applications where exposure to moisture or harsh environments is a concern. However, stainless steel does not possess the same level of strength as steel round bars. Steel round bars are capable of carrying heavier loads and providing better structural integrity. Another aspect to consider is the cost-effectiveness of steel round bars compared to aluminum or stainless steel. Steel is generally more affordable than stainless steel and aluminum, making it a popular choice for a wide range of applications. Additionally, steel round bars are readily available in various sizes and grades, offering versatility and ease of use. Overall, steel round bars excel in terms of strength, durability, and cost-effectiveness when compared to other materials like aluminum or stainless steel. However, the choice of material ultimately depends on the specific requirements of the application and the desired properties needed for the project.

Q: What are the advantages of using chromium-alloy steel round bars?: There are several advantages to using chromium-alloy steel round bars. Firstly, chromium-alloy steel round bars have excellent corrosion resistance properties. The addition of chromium to the steel increases its ability to withstand corrosion and oxidation, making it suitable for use in harsh environments or applications where exposure to moisture or chemicals is a concern. This corrosion resistance helps to prolong the lifespan of the round bars, reducing maintenance and replacement costs. Secondly, chromium-alloy steel round bars offer high strength and durability. The alloying of chromium with steel enhances its mechanical properties, such as tensile strength, hardness, and toughness. This makes chromium-alloy steel round bars ideal for applications that require high strength and resistance to wear and tear, such as construction, heavy machinery, and automotive industries. Another advantage of using chromium-alloy steel round bars is their heat resistance. The addition of chromium improves the heat resistance of the steel, allowing it to maintain its strength and structural integrity even at elevated temperatures. This makes it suitable for use in high-temperature applications, such as furnace components, boilers, and heat exchangers. Furthermore, chromium-alloy steel round bars are known for their excellent machinability. The alloying elements in the steel enhance its ability to be easily machined, allowing for precise shaping and finishing. This makes it easier and more cost-effective to manufacture complex components or parts using chromium-alloy steel round bars. Lastly, chromium-alloy steel round bars are readily available in the market. Due to their popularity and wide range of applications, chromium-alloy steel round bars can be easily sourced from various suppliers. This availability ensures a consistent supply of the material, reducing production downtime and lead times. Overall, the advantages of using chromium-alloy steel round bars include corrosion resistance, high strength and durability, heat resistance, excellent machinability, and availability. These properties make chromium-alloy steel round bars a versatile and reliable choice for a wide range of applications in various industries.

Q: What are the weight calculations for steel round bars?: The weight calculations for steel round bars can be determined using a straightforward formula. The weight of a steel round bar can be calculated by multiplying the square of the diameter in millimeters by the length in meters and then multiplying the result by the specific weight of steel, which is typically around 7.85 grams per cubic centimeter. The formula for calculating the weight of a steel round bar is as follows: Weight = (Diameter^2 x Length x Specific Weight of Steel) / 1000 Where: - Diameter is the diameter of the round bar in millimeters - Length is the length of the round bar in meters - Specific Weight of Steel is the density of steel, which is usually 7.85 grams per cubic centimeter - 1000 is used to convert the weight from grams to kilograms It is important to note that this formula assumes the round bar is made of pure steel and does not account for any variations in the specific weight of different steel alloys. Additionally, it is crucial to use consistent units throughout the calculation, either millimeters or meters, to obtain accurate results.

Q: Can steel round bars be used in the manufacturing of agricultural equipment?: Yes, steel round bars can be used in the manufacturing of agricultural equipment. Steel is a strong and durable material that provides the necessary strength and structural integrity required for agricultural machinery. It is commonly used in the production of components such as axles, shafts, and supports, making it suitable for various types of farming equipment.

Q: How do you determine the strength of a steel round bar?: The strength of a steel round bar can be determined through various methods, but the most common approach is by conducting a tensile test. This test involves applying a controlled force to the bar until it fractures, allowing for the measurement of its ultimate tensile strength (UTS). Other important parameters, such as yield strength, elongation, and reduction in area, can also be determined from the test results. Additionally, the chemical composition and microstructure of the steel can provide valuable insights into its overall strength and performance characteristics.

Q: What is the maximum temperature steel round bars can withstand?: The maximum temperature that steel round bars can withstand depends on the specific grade and composition of the steel. However, most standard carbon steels can typically withstand temperatures up to approximately 1000°C (1832°F) before their mechanical properties begin to significantly degrade.

Q: What is galvanized round bar?: Galvanized round bar generally refers to the wiring used for lightning protection in construction and installation. It is made of ordinary round steel (usually 8mm to 12mm diameter) and protected by electro galvanized protection layer. Galvanizing, differentiation, plating and electroplating, cold galvanizing and hot galvanizing etc..

Q: What is the difference between hot working and cold working of steel round bars?: Hot working and cold working are two different methods used to shape and manipulate steel round bars. Hot working involves heating the steel to a high temperature, typically above its recrystallization temperature, and then shaping it through processes such as forging, rolling, or extrusion. This method helps to reduce the hardness and increase the ductility of the steel, making it easier to reshape and form into desired shapes. Hot working also helps to refine the grain structure of the steel, improving its mechanical properties. On the other hand, cold working is performed at or near room temperature without the need for heating the steel. It involves processes like cold rolling, drawing, or bending, where the steel is mechanically deformed to achieve the desired shape. Cold working increases the strength and hardness of the steel while reducing its ductility. It also causes strain hardening, which results in a finer grain structure and improved dimensional accuracy. In summary, the main difference between hot working and cold working of steel round bars lies in the temperature at which the processes are carried out and the resulting effects on the mechanical properties of the steel. Hot working is performed at high temperatures to increase ductility and refine grain structure, while cold working is done at or near room temperature to enhance strength, hardness, and dimensional accuracy.

Q: Can steel round bars be used for making storage tanks?: Yes, steel round bars can be used for making storage tanks. Steel is a strong and durable material that is commonly used in the construction of storage tanks due to its high tensile strength and resistance to corrosion. Steel round bars can be shaped and welded together to form the structure of the tank, providing stability and support. Additionally, steel tanks can be customized to meet specific storage requirements, making them a versatile choice for various industries.

Q: What are the different testing methods for steel round bars?: There are several testing methods employed to assess the quality and performance of steel round bars. These methods include: 1. Tensile Testing: Tensile testing is conducted to determine the strength and elasticity of steel round bars. It involves applying a force to the bar until it reaches its breaking point, measuring the maximum load it can withstand before fracture occurs. This test helps to determine the ultimate tensile strength, yield strength, and elongation of the steel. 2. Hardness Testing: Hardness testing is used to assess the resistance of steel round bars to indentation or scratching. Common methods include the Rockwell, Brinell, and Vickers hardness tests. These tests provide valuable information about the material's ability to resist wear, deformation, and surface damage. 3. Charpy Impact Testing: Charpy impact testing measures the toughness and resistance to brittle fracture of steel round bars. The test involves striking a notched sample with a pendulum, measuring the energy absorbed during fracture. This test is crucial in evaluating the material's behavior under sudden impact or dynamic loading conditions. 4. Ultrasonic Testing: Ultrasonic testing utilizes high-frequency sound waves to detect internal flaws or defects in steel round bars. This non-destructive testing method can identify cracks, inclusions, or voids that may compromise the structural integrity of the material. 5. Magnetic Particle Inspection: This testing method is used to identify surface cracks or defects in steel round bars. It involves magnetizing the material and applying iron particles or magnetic ink. Any surface cracks or flaws will cause a leakage of magnetic flux, making them visible under proper lighting. 6. Visual Inspection: Visual inspection is a basic yet essential method for evaluating the quality of steel round bars. It involves examining the bar's surface for any visible defects, such as pits, scratches, or irregularities in shape or dimensions. 7. Chemical Analysis: Chemical analysis helps determine the composition of steel round bars by measuring the percentage of various elements present in the material. This information is crucial in ensuring that the steel meets the required specifications and is suitable for its intended application. Overall, a combination of these testing methods is employed to ensure the quality, performance, and reliability of steel round bars in various industries such as construction, manufacturing, and engineering.

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