Steel Round Bar 5-28mm Hot Rolled GB Q235 Q195
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195
Product Applications:
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.
Product Advantages:
OKorder's High Quality Round Bar 5-28mm Hot Rolled GB Q235 Q195are durable, strong, and resist corrosion.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Corrosion resistance
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Specifications:
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
- Q: What is the hardness of a steel round bar?
- The hardness of a steel round bar can vary depending on the specific type of steel and the manufacturing process used. Steel is typically measured for hardness using the Rockwell hardness scale, which measures the depth of indentation caused by a specific load on a diamond or steel ball. Common hardness values for steel round bars can range from around 20 to 60 Rockwell C (HRC), with higher numbers indicating a harder material. However, it is important to note that the hardness of a steel round bar can also be influenced by factors such as heat treatment, alloying elements, and any surface treatments applied. Therefore, it is essential to consult the specific hardness specifications provided by the manufacturer or supplier to accurately determine the hardness of a steel round bar.
- Q: How do you calculate the weight of a steel round bar based on its length and volume?
- To calculate the weight of a steel round bar based on its length and volume, you would need to know the density of steel, which is approximately 7.85 grams per cubic centimeter. First, calculate the volume of the round bar using the formula for the volume of a cylinder (pi * radius squared * length). Then, multiply the volume by the density to obtain the weight of the steel round bar.
- Q: What are the different heat treatment processes for steel round bars?
- There are several heat treatment processes for steel round bars, including annealing, normalizing, quenching, tempering, and hardening. Annealing involves heating the steel to a specific temperature and then slowly cooling it to relieve internal stresses and improve its machinability. Normalizing is a similar process, but the cooling is done in still air to achieve a more uniform structure. Quenching involves rapidly cooling the steel from a high temperature to increase its hardness, while tempering is a subsequent process that reduces the brittleness caused by quenching through controlled reheating. Hardening is a process that involves heating the steel to a high temperature and then rapidly cooling it to achieve maximum hardness.
- Q: Can steel round bars be used in the shipbuilding industry?
- Yes, steel round bars can be used in the shipbuilding industry. Steel round bars are commonly used in shipbuilding for various applications such as constructing hulls, decks, bulkheads, and other structural components. They offer excellent strength, durability, and corrosion resistance, making them ideal for withstanding the harsh marine environment. Steel round bars can be easily welded, machined, and formed into desired shapes, providing flexibility in ship construction. Additionally, their availability in various sizes and grades allows for customization to meet specific shipbuilding requirements. Overall, steel round bars are essential materials in the shipbuilding industry due to their robustness and reliability.
- Q: Can steel round bars be used in the manufacturing of marine propellers?
- Yes, steel round bars can be used in the manufacturing of marine propellers. Steel is a commonly used material in the marine industry due to its high strength, durability, and corrosion resistance. Steel round bars can be machined and shaped into the desired propeller design, providing the necessary strength and stability required for marine applications. Additionally, steel can withstand the harsh conditions of saltwater environments, making it suitable for use in marine propellers.
- Q: How do steel round bars compare to aluminum or steel tubing?
- Steel round bars, aluminum tubing, and steel tubing all have their own unique properties and advantages. Steel round bars are known for their high strength and durability, making them suitable for applications that require heavy loads or high-stress conditions. Aluminum tubing, on the other hand, is lightweight and corrosion-resistant, making it ideal for projects that prioritize weight reduction and resistance to environmental elements. Steel tubing offers a balance between strength and weight, making it a versatile choice for various industrial applications. Ultimately, the choice between steel round bars, aluminum tubing, or steel tubing depends on the specific requirements of the project, such as load-bearing capacity, weight limitations, and environmental factors.
- Q: How do you prevent corrosion on steel round bars?
- One way to prevent corrosion on steel round bars is by applying a protective coating, such as paint or a corrosion-resistant metal coating like zinc or epoxy. Regular maintenance, including cleaning and removing any dirt or moisture buildup, can also help prevent corrosion. Additionally, storing the steel round bars in a dry and controlled environment can minimize exposure to moisture and prevent corrosion.
- Q: How do steel round bars compare to plastic or composite bars?
- Steel round bars are generally considered to be stronger and more durable compared to plastic or composite bars. They have higher tensile strength, can withstand heavier loads, and are less prone to bending or breaking. Additionally, steel bars offer better resistance to harsh weather conditions, corrosion, and fire. However, plastic or composite bars can be more lightweight and cost-effective, making them suitable for certain applications where weight or budget is a concern. Overall, the choice between steel, plastic, or composite bars depends on the specific requirements of the project or application.
- Q: What are the different types of steel used to make round bars?
- There are various types of steel used to make round bars, including carbon steel, alloy steel, stainless steel, and tool steel.
- Q: Are steel round bars susceptible to cracking?
- Cracking in steel round bars can occur under certain circumstances. Factors that contribute to cracking include high stress levels, improper heat treatment, and the presence of impurities or defects in the material. Cracking is also more likely with sudden temperature changes or excessive loading. It is worth noting that the susceptibility to cracking varies depending on the grade and composition of the steel. Low carbon or mild steel is generally less prone to cracking compared to higher carbon or alloy steels. To prevent cracking, it is crucial to handle and store steel round bars properly. This includes avoiding dropping or mishandling the bars and storing them in a dry, controlled environment to prevent corrosion. Proper heat treatment processes, such as annealing or tempering, can improve the structural integrity of steel round bars and reduce the risk of cracking. Regular inspections and testing for defects or impurities can help identify and address issues before they lead to cracking. In conclusion, while steel round bars can be susceptible to cracking, taking appropriate precautions and using proper manufacturing and handling techniques can minimize the risk and ensure the bars' integrity.
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Steel Round Bar 5-28mm Hot Rolled GB Q235 Q195
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 50 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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