Round Bar Hot Rolled High Quality 3MM-25MM
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 200000 m.t./month
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Product Description:
OKorder is offering high quality Hot Rolled Steel I-Beams at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
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 Steel I-Beams are 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
FAQ:
Q1: How do we guarantee the quality of our products?
A1: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q2: How soon can we receive the product after purchase?
A2: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q3: What makes stainless steel stainless?
A3: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
- Q: What are the different heat treatment processes for steel round bars?
- Enhancing the mechanical properties and improving the overall performance of steel round bars can be achieved through various heat treatment processes. Here are a few examples: 1. Annealing: By subjecting the steel round bars to high temperatures followed by slow cooling, typically in a furnace, internal stresses are relieved, ductility is improved, and the grain structure of the steel is refined. 2. Normalizing: This process involves heating the steel round bars to a temperature above the critical range and then allowing them to cool naturally. It helps refine the grain structure, enhance machinability, and improve the mechanical properties of the steel. 3. Quenching and tempering: Rapid cooling, or quenching, is done by immersing the heated steel round bars in a quenching medium like oil or water. This produces a hard and brittle structure known as martensite. To reduce brittleness and improve toughness, tempering involves reheating the quenched steel to a specific temperature and cooling it. This process enhances the strength, hardness, and toughness of the steel. 4. Stress-relieving: By heating the steel round bars to a specific temperature below the critical range and maintaining it for a set period, stress-relieving helps reduce residual stresses that may have developed during previous manufacturing processes. This improves dimensional stability and reduces the risk of distortion or cracking. 5. Induction hardening: This specialized heat treatment process selectively heats the surface of the steel round bars using high-frequency induction currents. By quickly raising the surface temperature, it allows for hardening through subsequent quenching. Induction hardening is commonly used to increase surface wear resistance and hardness while preserving the core's toughness and ductility. These represent some of the commonly employed heat treatment processes for steel round bars. The choice of the appropriate process depends on the desired mechanical properties, intended application, and specific requirements of the steel round bars.
- Q: Can steel round bars be used in the hydraulic industry?
- Yes, steel round bars can be used in the hydraulic industry. Steel round bars are known for their strength, durability, and resistance to corrosion, making them suitable for various applications in the hydraulic industry. They can be used to manufacture hydraulic cylinders, pistons, and other components that require high tensile strength and reliability. Additionally, steel round bars can be machined and shaped into various sizes and specifications to meet the specific needs of hydraulic systems. Overall, steel round bars are a popular choice for the hydraulic industry due to their excellent mechanical properties and versatility.
- Q: Can steel round bars be used in the automotive parts industry?
- Yes, steel round bars can be used in the automotive parts industry. They are commonly used in the manufacturing of various automotive components such as axles, drive shafts, suspension systems, and chassis parts. The high strength and durability of steel make it an ideal material for these applications, ensuring the safety and reliability of vehicles.
- Q: What is hot rolling? What is called forging?
- And there is no essential difference between the rolling and forging are relying on the plastic deformation of the blank but only the blank rolling machine plates or other similar things can be put in the sheet metal forging blank is processed into a more complex shape
- Q: Are steel round bars suitable for the production of bearings?
- No, steel round bars are not suitable for the production of bearings. Bearings require specific materials with high hardness, wear resistance, and low friction characteristics, such as bearing steels or ceramics. Steel round bars do not possess these necessary properties, making them unsuitable for bearing production.
- Q: What is the yield strength to tensile strength ratio of a steel round bar?
- The yield strength to tensile strength ratio of a steel round bar, also known as the yield-to-tensile ratio, is an important mechanical property that indicates the material's ability to withstand deformation before it fails under tension. This ratio is typically used to evaluate the ductility and brittleness of a steel bar. In general, the yield strength is the stress at which a material begins to exhibit plastic deformation, while the tensile strength is the maximum stress the material can withstand before it fractures. The yield strength to tensile strength ratio is calculated by dividing the yield strength by the tensile strength. The yield-to-tensile ratio varies depending on the specific grade and composition of the steel being used. However, for most common structural steels, the yield-to-tensile ratio typically falls within the range of 0.6 to 0.8. This means that the yield strength is generally around 60% to 80% of the ultimate tensile strength. A higher yield-to-tensile ratio indicates a more ductile and less brittle steel, as it suggests that the material can undergo substantial plastic deformation before ultimate failure. On the other hand, a lower yield-to-tensile ratio indicates a more brittle steel, which is prone to fracture at lower levels of deformation. It is important to note that the yield-to-tensile ratio is just one of many factors to consider when evaluating the mechanical properties of a steel round bar. Other factors such as hardness, toughness, and elongation also play significant roles in determining the overall performance and suitability of the steel for a particular application.
- Q: What are the different types of steel round bar surface treatments used in the automotive industry?
- In the automotive industry, the most common types of steel round bar surface treatments used are galvanization, electroplating, and powder coating. Galvanization involves coating the steel with a layer of zinc to protect it from corrosion. Electroplating is a process where a thin layer of another metal, such as chrome or nickel, is applied to the steel surface for enhanced aesthetics and protection. Powder coating, on the other hand, involves applying a dry powder to the steel surface and then curing it under high heat to create a durable and attractive finish. These surface treatments help improve the durability, appearance, and overall performance of steel round bars used in automotive applications.
- Q: What is the difference between a hot rolled and a cold drawn steel round bar?
- Hot rolled and cold drawn steel round bars differ primarily in their production methods and resulting characteristics. Hot rolled bars are created by heating a billet or ingot to high temperatures and shaping it through rolling, resulting in a rough, scaled surface with rounded edges. This process allows for quick and efficient production of larger sizes and quantities, however, the steel is less precise in terms of dimensions and has a lower surface finish quality compared to cold drawn steel. In contrast, cold drawn steel round bars are produced by pulling a hot rolled bar through a die at room temperature, resulting in a smooth, polished surface with tighter dimensional tolerances. This process enhances the mechanical properties of the steel, such as improved strength, hardness, and dimensional accuracy. Cold drawing also provides a better surface finish and closer dimensional control compared to hot rolling. Hot rolled steel round bars are often used in construction, manufacturing, and general fabrication due to their lower cost and ease of production. They are suitable for applications where precision and surface finish are not critical factors. On the other hand, cold drawn steel round bars are commonly used in demanding applications that require superior dimensional accuracy, surface finish, and mechanical properties. They are frequently utilized in automotive, aerospace, and machinery industries, where precision and quality are essential. In conclusion, the main disparities between hot rolled and cold drawn steel round bars lie in their production process, resulting surface finish, dimensional accuracy, and mechanical properties. The choice between the two depends on the specific requirements and applications of the steel.
- Q: Is round bar steel?
- For example, the steel structure material is Q235B, and the steel bar is HPB235. Although the strength is the same, the production process is still different, the requirements of higher steel bar, there is a new specification more stringent.
- Q: How do you determine the strength and hardness of a steel round bar?
- The strength and hardness of a steel round bar can be determined through various testing methods, such as tensile testing and hardness testing. Tensile testing involves subjecting the steel bar to a controlled pulling force until it fractures, allowing measurement of its ultimate tensile strength and yield strength. Hardness testing, on the other hand, measures the material's resistance to indentation or scratching using methods like Rockwell or Brinell hardness tests. These tests provide quantitative values that help determine the strength and hardness of the steel round bar.
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Round Bar Hot Rolled High Quality 3MM-25MM
- Ref Price:
-
- Loading Port:
- Tianjin
- 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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