Hot rolled, forged, QT heat treatment and normalizing
6. Payment term
T/T, L/C or we can negotiate.
7. Delivery time
20days after the order confirmed
8. Characteristics
1) The strength and hardness of S20C/ 1020/ 20 is higher than that of S15C/ 1015/ 15.
2) Good plasticity and weldability.
3) Good toughness after hot rolling and normalization.
9. Application
S20C structural carbon steel bar /1020 /20 can be used to be manufactured medium or small carburization or nitrocarburizing parts and press forging parts, such as lever shaft, selector fork of speed changing box, gear, heavy mechanical lever and shackle, etc.
Products Show
Product Overviews
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)
Application
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
Q:How do you calculate the maximum allowable stress for a steel round bar?
To calculate the maximum stress that a steel round bar can bear without deforming or failing, several considerations must be made.
1. Material properties must be determined: Steel round bars have various grades, each with its own distinct material properties. These properties, such as ultimate tensile strength (UTS), yield strength, and elongation percentage, can usually be found in material specification documents or reference books.
2. The design factor should be identified: The design factor, also referred to as the safety factor or factor of safety, is a multiplier applied to the maximum stress to ensure the safety and capacity of the structure or component when subjected to unexpected or dynamic loads. The design factor can differ depending on the application and industry standards, typically ranging between 1.5 and 4.
3. The allowable stress needs to be calculated: The allowable stress is determined by dividing the yield strength of the material by the design factor. This calculation ensures that the structure or component remains within a safe stress range. The formula can be expressed as: Allowable Stress = Yield Strength / Design Factor.
For instance, if a steel round bar has a yield strength of 300 MPa and a design factor of 2, the maximum allowable stress would be 150 MPa (300 MPa / 2). This implies that the steel round bar can safely endure a maximum stress of 150 MPa before the risk of deformation or failure arises.
It is vital to note that the maximum allowable stress is just one aspect of designing a structure or component. Other factors, including fatigue, environmental conditions, and load distribution, should also be considered to ensure a secure and dependable design. Seeking guidance from relevant engineering codes, standards, and professionals is highly recommended when calculating the maximum allowable stress for a specific application.
Q:Are more bars used in high-rise buildings?
To see what kind of structure, frame structure, screw steel is much more used, such as beam column, main reinforcement, partial stirrups, plate reinforcement. The shear wall structure is used in many round bars, such as vertical wall bars, horizontal bars, steel bars and stirrups. Note that only general structures are concerned.
Q:What is the typical hardness of a steel round bar?
The typical hardness of a steel round bar can vary depending on the specific grade and composition of the steel. However, most steel round bars have a typical hardness ranging from 20 to 60 HRC (Rockwell Hardness Scale).
Q:What are the advantages of using tin-alloy steel round bars?
There are several advantages of using tin-alloy steel round bars. Firstly, the addition of tin improves the corrosion resistance of the steel, making it suitable for applications in harsh environments or exposure to moisture. Secondly, tin-alloy steel round bars offer enhanced machinability, allowing for easier shaping and fabrication, which can save time and reduce production costs. Additionally, tin can improve the strength and hardness of the steel, making it more durable and resistant to wear and tear. Lastly, tin-alloy steel round bars have excellent thermal conductivity, making them suitable for applications in heat transfer or electrical industries.
Q:Can steel round bars be used as axles or shafts?
Axles or shafts can indeed be made from steel round bars. This is because steel possesses excellent strength and durability, making it a popular choice for axles and shafts. In particular, steel round bars are ideal for applications that involve rotational movement, such as axles and shafts, as they can handle heavy loads and endure bending and torsional forces. Moreover, steel round bars can be machined and heat-treated to meet specific requirements for hardness and surface finish, further enhancing their suitability for use as axles or shafts. All in all, steel round bars are a dependable and widely utilized option for axles and shafts in various industries, including automotive, machinery, and construction.
Q:How can stainless steel rounds occur? Is it a quality problem?
By the skin bubbles, surface cracks and so on. Crack and steel surface vertical, about 0.8 ~ 1.5mm, no decarburization on both sides, this is caused by the bubble caused by the subcutaneous bubble. The molten steel contains a large amount of gas. When the liquid steel is solidified, the gas is discharged to form bubbles. The outer layer of the slab near the bubble called the subcutaneous bubbles, honeycomb shaped perpendicular to the surface of the billet, billet after rolling, the bubbles inside most welding. But if the subcutaneous bubbles near the slab surface is too close, while heating because of billet surface oxidation or burning of the bubble exposed, the bubble surface is oxidized, thus it is not possible to make the steel welding, surface cracks.
Q:Can steel round bars be used for hydraulic cylinder applications?
Yes, steel round bars can be used for hydraulic cylinder applications. Steel round bars are commonly used in the manufacturing of hydraulic cylinders due to their high strength, durability, and resistance to corrosion. Additionally, steel round bars can be machined to precise dimensions, allowing for the creation of custom hydraulic cylinder components.
Q:What are the advantages of using phosphorus-alloy steel round bars?
There are several advantages of using phosphorus-alloy steel round bars:
1. Increased strength: Phosphorus-alloy steel round bars have a higher tensile strength compared to standard steel bars. This increased strength makes them suitable for applications that require greater load-bearing capacity, such as construction and automotive industries.
2. Enhanced corrosion resistance: Phosphorus-alloy steel has a higher resistance to corrosion compared to regular steel. This makes it more durable and long-lasting, especially in environments with high moisture or exposure to chemicals.
3. Improved machinability: Phosphorus-alloy steel has excellent machinability, which means it can be easily shaped, cut, and formed into various designs or structures. This characteristic makes it a preferred choice for industries that require precise shaping, such as manufacturing and engineering.
4. Reduced brittleness: Phosphorus-alloy steel has a lower brittleness factor compared to other types of steel. This means it is less likely to break or fracture under sudden impact or stress, making it a safer option for applications where structural integrity is crucial.
5. Cost-effective: Despite its enhanced properties, phosphorus-alloy steel round bars are still cost-effective compared to other specialty alloys. This makes them a more affordable choice for industries that require high-performance materials without breaking the budget.
6. Improved weldability: Phosphorus-alloy steel round bars have excellent weldability, allowing for easy and secure welding connections. This characteristic makes them suitable for applications that require strong and reliable welded joints, such as construction or fabrication projects.
In summary, phosphorus-alloy steel round bars offer increased strength, enhanced corrosion resistance, improved machinability, reduced brittleness, cost-effectiveness, and improved weldability. These advantages make them a preferred choice for various industries where high-performance materials are required.
Q:What are the applications of steel round bars in the aerospace industry?
Steel round bars have various applications in the aerospace industry, primarily due to their high strength-to-weight ratio and excellent resistance to corrosion. They are commonly used in the construction of aircraft frames, landing gear components, and engine parts. Additionally, steel round bars are employed in the production of critical structural elements, such as wing spars and fuselage sections, ensuring the durability and safety of aerospace vehicles.
Q:How do steel round bars perform in high-pressure applications?
Highly suitable for high-pressure applications, steel round bars are renowned for their exceptional strength and durability. When exposed to high-pressure conditions, these bars demonstrate outstanding resistance to deformation and uphold their structural integrity. As a result, they can endure intense forces while maintaining their shape, thereby guaranteeing the safety and dependability of the application.
Steel round bars find widespread use in high-pressure applications, including hydraulic systems, oil and gas pipelines, aerospace components, and high-pressure vessels. Their robust nature empowers them to withstand the extreme pressures encountered in these scenarios without experiencing failure. The high tensile strength of steel ensures that the bars do not buckle or collapse under pressure, providing the vital support and stability required in demanding environments.
Moreover, steel round bars possess superior corrosion resistance properties, a critical characteristic in high-pressure applications. They exhibit exceptional tolerance to harsh chemicals, moisture, and other corrosive elements, preventing rusting or degradation over time. This corrosion resistance guarantees the longevity and dependability of the steel round bars in high-pressure environments, mitigating the risk of premature failure.
Additionally, steel round bars offer versatility in terms of grades and alloys, enabling customization to meet specific high-pressure requirements. Various grades of steel, such as carbon steel, alloy steel, or stainless steel, can be employed based on the demands of the application. This versatility ensures that the steel round bars can be tailored to deliver optimal performance and fulfill the precise pressure and temperature prerequisites of the application.
In conclusion, the exceptional strength, durability, and corrosion resistance properties of steel round bars make them ideal for high-pressure applications. Their ability to withstand intense forces while maintaining their shape renders them a reliable choice for numerous industries, encompassing hydraulic systems, oil and gas pipelines, aerospace, and high-pressure vessels. By employing steel round bars, companies can ensure the safety, dependability, and longevity of their high-pressure applications.
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