High Quality Steel Round Bar Q235, A36, SS400
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
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Specifications of High Quality Steel Round Bar Q235, A36, SS400
1. Grade: GB, JIS, ASTM, EN
2. Grade: Q235, SS400, A36, S235JR
3. Diameter and mass: As below
Diameter | Mass | Diameter | Mass | Diameter | Mass |
(mm) | (kg/m) | (mm) | (kg/m) | (mm) | (kg/m) |
6 | 0.22 | 22 | 2.98 | 53 | 17.30 |
7 | 0.30 | 24 | 3.55 | 56 | 19.30 |
8 | 0.40 | 25 | 3.85 | 60 | 22.20 |
9 | 0.50 | 26 | 4.17 | 63 | 24.50 |
10 | 0.62 | 28 | 4.83 | 65 | 26.00 |
11 | 0.75 | 30 | 5.55 | 70 | 30.20 |
12 | 0.89 | 32 | 6.31 | 75 | 34.70 |
13 | 1.04 | 34 | 7.13 | 80 | 39.50 |
14 | 1.21 | 36 | 7.99 | 85 | 44.50 |
15 | 1.39 | 38 | 8.90 | 90 | 49.90 |
16 | 1.58 | 40 | 9.86 | 95 | 55.60 |
17 | 1.78 | 42 | 10.90 | 100 | 61.70 |
18 | 2.00 | 45 | 12.50 | 120 | 88.85 |
19 | 2.23 | 48 | 14.20 | 140 | 120.93 |
20 | 2.47 | 50 | 15.40 | 150 | 138.82 |
4. Material: Mild Steel
5. Heat treatment of high quality steel:
Fire: Isothermal annealing temperature is 800 ~ 880 °C, with 10 ~ 20 °C, the furnace cooling to about 600 °C, hardness above HB269.
Preheat temperature: 730-730 °C
Quenching temperature: 1190-1210 °C
Tempering temperature: 540-595 °C
Cold drawn, hardness 285 HBS
Cold drawn after annealing condition, hardness 277 HBS
Quenching methods: oil quenching, air cooling or salt bath quenching
Usage and Applications of High Quality Steel Round Bar Q235, A36, SS400
1) Suitable for making various strong cutting tool abrasion resistance, impact resistance.
2) Used to produce all kinds of high hard and super hard saw blade, drill, tap, broach, gear hob and various kinds of milling cutter.
3) Used for advanced punching die, screw die, and the toughness and complicated shape of the punch, etc.
4) Is used for cold forging die and drawing mode, etc.
5) Recommended watchcase factory, screw factory and other cold stamping products industry use.
Packaging & Delivery of High Quality Steel Round Bar Q235, A36, SS400
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 45 days
Trade terms: FOB, CFR, CIF
MOQ: 25 tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: The price invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
Production Flow of High Quality Steel Round Bar Q235, A36, SS400
The common processes are preheated forging quenching, dual refinement solution process, cooling quenching and isothermal quenching. We use heat treatment for dual refinement solution process. The main measures process is high temperature solution and refinement cycle. High temperature solution can improve the carbide morphology and particle size. The aim is to make the loop refinement ultrafine austenite grains.
- Q: Are steel round bars suitable for use in the construction industry?
- Yes, steel round bars are commonly used in the construction industry due to their strength, durability, and versatility. They provide structural support in various applications such as reinforcement in concrete, framing, and the creation of beams and columns. Additionally, steel round bars can be easily fabricated, welded, and formed into different shapes, making them a suitable choice for a wide range of construction projects.
- Q: Can steel round bars be bent or formed?
- Yes, steel round bars can be bent or formed. The ability of steel round bars to be bent or formed depends on various factors such as the type of steel, the diameter and thickness of the bar, and the method used for bending or forming. Steel round bars can be bent or formed using different techniques, including hot bending, cold bending, and mechanical bending. Hot bending involves heating the steel round bar to a specific temperature and then bending it into the desired shape. Cold bending, on the other hand, does not require heating and can be done using hydraulic or manual bending machines. Mechanical bending involves the use of specialized machinery to apply force and bend the steel round bar. However, it is important to note that excessive bending or forming can weaken the steel round bar and affect its structural integrity. Therefore, it is crucial to follow proper bending and forming techniques and consider the limitations and specifications provided by the manufacturer or industry standards.
- Q: How is the weight of a steel round bar calculated?
- To determine the weight of a steel round bar, one must employ a formula that incorporates the bar's diameter, length, and the density of the steel variant in question. The formula is as follows: Weight = (π/4) x (diameter)^2 x length x density Within this formula, the symbol π denotes the mathematical constant pi (approximately 3.14159), the diameter signifies the measurement across the broadest point of the round bar, the length refers to the measurement from one end of the bar to the other, and the density pertains to the mass per unit volume of the specific steel type. By substituting the values of diameter, length, and density into this formula, it becomes possible to compute the weight of a steel round bar. It is important to note that the weight will be expressed in units of mass, such as kilograms or pounds, depending on the adopted system of measurement.
- Q: Are steel round bars prone to fatigue failure?
- Fatigue failure is a common occurrence in steel round bars, which can be attributed to repeated cyclic loading or stress. This leads to a gradual weakening of the material, eventually causing it to fail, even if the applied stress is below its ultimate strength. Due to their inherent characteristics, steel round bars, like other structural materials, are susceptible to fatigue failure. Various factors can contribute to fatigue failure in steel round bars, including improper design, inadequate material selection, manufacturing defects, and excessive cyclic loading. Additionally, surface defects, notches, stress concentrations, and corrosive environments can further accelerate the fatigue process. Engineers and designers take several measures to mitigate the risk of fatigue failure. These include implementing appropriate design practices, selecting high-quality materials, conducting thorough inspections, applying stress-relieving treatments, and considering the impact of cyclic loading during the structural design phase. It is important to understand that the susceptibility of steel round bars to fatigue failure depends on multiple factors, such as the specific steel grade, loading conditions, environmental factors, and overall structural design. Therefore, it is crucial to carefully assess these factors and employ appropriate mitigation measures to ensure the safe and reliable performance of steel round bars in various applications.
- Q: Can steel round bars be used for making gears?
- Yes, steel round bars can be used for making gears. Steel round bars are commonly used in gear manufacturing due to their excellent strength, durability, and resistance to wear and tear. They can be machined, heat-treated, and shaped into various gear types, such as spur gears, helical gears, and bevel gears. Steel round bars offer high precision and reliability, making them suitable for applications requiring heavy-duty and high-performance gears, such as automotive transmissions, industrial machinery, and power transmission systems.
- Q: What are the advantages of using manganese-alloy steel round bars?
- Manganese-alloy steel round bars offer several advantages. Firstly, they possess excellent strength and durability, making them ideal for applications that require high load-bearing capacity. Secondly, the presence of manganese in the alloy enhances hardenability, resulting in improved wear resistance and toughness. This makes manganese-alloy steel round bars suitable for use in environments with abrasive conditions or high impact forces. Additionally, these round bars exhibit good machinability, allowing for easy fabrication and shaping. Lastly, the corrosion resistance of manganese-alloy steel ensures a longer lifespan, reducing maintenance requirements and costs in various industries.
- 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 for making hydraulic cylinders or pistons?
- Yes, steel round bars can be used for making hydraulic cylinders or pistons. Steel is a strong and durable material that can withstand the high pressures and loads that hydraulic cylinders and pistons typically experience. Steel round bars can be machined or shaped into the desired dimensions for the hydraulic cylinder or piston. Additionally, steel has good corrosion resistance properties, which is important for hydraulic systems that may come into contact with moisture or other corrosive substances. Overall, steel round bars are a suitable material choice for manufacturing hydraulic cylinders and pistons.
- Q: What are the different finishes available for steel round bars?
- There are several different finishes available for steel round bars, each of which serves a specific purpose and provides distinct benefits. Some of the most common finishes include: 1. Hot Rolled: This finish is achieved by heating the steel above its recrystallization temperature and then rapidly cooling it. It results in a rough, scaly surface texture that provides excellent corrosion resistance and durability. 2. Cold Rolled: In this process, the steel is rolled at room temperature, resulting in a smooth and polished finish. Cold rolled steel round bars are known for their precise dimensions, tight tolerances, and improved surface finish. 3. Bright Drawn: This finish involves subjecting the steel round bars to a drawing process, where they are pulled through a die to achieve the desired shape and size. It leaves the surface smooth, bright, and free from any imperfections or defects. 4. Polished: Polishing is typically done after the steel round bars have been cold rolled or drawn. It involves using abrasive materials or chemical treatments to remove any surface imperfections and create a highly reflective finish. Polished steel round bars are often used in decorative applications. 5. Ground: Grinding is a process where the steel round bars are subjected to abrasive wheels to remove any surface imperfections or irregularities. It results in a smooth and even finish, making the bars suitable for applications where tight tolerances and uniformity are required. 6. Galvanized: Galvanizing is a coating process where the steel round bars are dipped in a bath of molten zinc. This creates a protective layer that prevents corrosion and increases the lifespan of the bars, making them suitable for outdoor applications or environments with high humidity or moisture. These different finishes offer a range of properties and appearances, allowing steel round bars to be used in various industries and applications such as construction, automotive, manufacturing, and engineering. It is important to consider the specific requirements and conditions of the intended use when selecting the appropriate finish for steel round bars.
- Q: What is the maximum copper content allowed for steel round bars?
- The maximum copper content allowed for steel round bars varies depending on the specific grade and industry standards. In general, copper is considered an alloying element in steel and is typically added in small amounts to enhance certain properties. The maximum allowable copper content for most steel round bars is typically around 0.50% to 1.00%. However, it is important to note that this can vary depending on the specific application and grade of steel being used. It is recommended to consult the relevant industry standards or specifications for the specific steel grade and application to determine the maximum copper content allowed.
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High Quality Steel Round Bar Q235, A36, SS400
- Ref Price:
-
- Loading Port:
- Lianyungang
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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