HSS Steel Round Bar/High Alloy Round Tool Steel Bar/M2/M25M42/D2/H13
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 33 m.t.
- Supply Capability:
- 2000000 m.t./month
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Description of steel round bar:
Characteristic:Tungsten-molybdenum high speed steel developed by China,high performance in toughness ,hardness, high temperature hardness.
Festures of steel round bar:
Anneal temperature: 840-860
Relief annealing temperature: 720-760
Hardening temperature: 1210-1230
Hardening medium: salt bath under 600,aslo use oil cooling or air cooling
Normal temper temperation: 540-560 RC Rockwell Hardness after hardening and temperature: 63-66
Production Capacity: 1000 Tons/Month
Tech:EAF+LF+VD+ESR
High strength at elevated temperatures
Specifications of steel round bar:
| C | Si | Mn | W | Mo | Cr | V | P | S |
| 0.80-0.90 | 0.20-0.45 | 0.15-0.40 | 5.50-6.75 | 4.50-5.50 | 3.80-4.40 | 1.75-2.20 | ≤0.030 | ≤0.030 |
Images of steel round bar:
FAQ:
1. What is your package?
Packing situation: standard seaworthy packing or as customer required.
2. How long is the lead time?
Delivery time: 45 days after order confirmed.
3. What payment term do you accept?
Payment: T/T or L/C at sight.
- Q: How are steel round bars used in the construction of tunnels and underground structures?
- Steel round bars are commonly used in the construction of tunnels and underground structures as reinforcement for concrete. These bars are placed within the concrete to provide strength and stability, preventing the structure from cracking or collapsing under pressure. The steel round bars also enhance the overall durability and load-bearing capacity of the tunnel or underground structure, ensuring its long-term structural integrity.
- Q: How do steel round bars perform under fatigue loading?
- Steel round bars generally perform well under fatigue loading, especially if they are made from high-quality steel. Fatigue loading refers to the repeated application of stress or strain on a material, which can lead to failure over time. Steel round bars are known for their excellent fatigue strength, which is the ability to withstand cyclic loading without developing cracks or failures. This is mainly due to the inherent properties of steel, such as its high strength, ductility, and toughness. Under fatigue loading, steel round bars undergo cyclic stress, which causes the material to experience alternating tension and compression. However, steel has a relatively high endurance limit, also known as fatigue strength coefficient, which determines the maximum stress level that the material can withstand without failure, even under cyclic loading. Steel round bars also have good resistance to fatigue crack propagation. This means that if a crack does initiate due to cyclic loading, it is less likely to propagate or grow quickly compared to other materials. This is due to the material's ability to absorb energy and redistribute stress, preventing the crack from growing and ultimately leading to failure. However, it is important to note that the performance of steel round bars under fatigue loading can be influenced by various factors. These include the specific type and grade of steel used, the manufacturing process, surface conditions, and the applied stress or strain levels. It is crucial to design and use steel round bars in accordance with industry standards and guidelines to ensure their optimal performance and safety under fatigue loading.
- Q: What is the average cost of steel round bars?
- The average cost of steel round bars can vary depending on various factors such as the size, grade, and market conditions. Generally, the price of steel round bars ranges from $0.50 to $5 per pound. However, it is important to note that these prices are approximate and can fluctuate based on the specific requirements and location of the purchase. Additionally, additional costs such as transportation, processing, and any applicable taxes should also be considered when determining the overall cost. It is recommended to consult with local suppliers or conduct market research to obtain the most accurate and up-to-date information on the average cost of steel round bars in your specific region.
- Q: Can steel round bars be used in the production of bearings?
- No, steel round bars are not typically used in the production of bearings. Bearings are usually made from specialized materials such as stainless steel, bearing steel, or other alloys specifically designed for their load-bearing properties and ability to reduce friction.
- Q: What is the difference between a forged and a ground steel round bar?
- A forged steel round bar is made by heating and shaping the steel through a process called forging, which involves applying extreme pressure to shape and compress the metal. This process enhances the strength and durability of the steel, making it suitable for applications that require high strength and resistance to wear and impact. On the other hand, a ground steel round bar is produced by removing material from the surface of a steel bar using grinding or machining processes. This results in a precise diameter and smooth surface finish, making it ideal for applications that require tight tolerances and a polished appearance. In summary, the main difference between a forged and a ground steel round bar lies in their manufacturing processes and resulting properties. Forged steel offers superior strength and toughness, while ground steel provides precise dimensions and a refined surface finish.
- Q: Is round steel round steel?
- Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.
- Q: How do you prevent rusting of steel round bars?
- To prevent rusting of steel round bars, there are several effective measures that can be taken: 1. Apply a protective coating: One of the most common ways to prevent rusting is by applying a protective coating on the steel round bars. This can be done by using paint, varnish, or a specialized rust-preventive coating. The coating acts as a barrier between the steel surface and the surrounding environment, preventing moisture and oxygen from reaching the metal and causing rust. 2. Keep the steel dry: Moisture is a key factor that contributes to the corrosion of steel. Therefore, it is crucial to keep the steel round bars as dry as possible. This can be achieved by storing them in a dry environment or using dehumidifiers in areas where moisture levels are high. 3. Maintain proper ventilation: Adequate ventilation helps in preventing the accumulation of moisture around the steel round bars. Good air circulation allows any moisture that may be present to evaporate, reducing the risk of rust formation. 4. Implement a rust inhibitor: Rust inhibitors, also known as corrosion inhibitors, can be applied to the steel round bars to prevent rust formation. These inhibitors work by chemically reacting with the metal surface, forming a protective layer that inhibits the oxidation process. Rust inhibitors can be in the form of oils, waxes, or specialized compounds. 5. Store in a controlled environment: If the steel round bars are not immediately being used, it is essential to store them in a controlled environment. This typically means keeping them in a dry, temperature-controlled area to minimize exposure to moisture and extreme temperatures, both of which can accelerate rust formation. 6. Regular maintenance and inspection: It is advisable to regularly inspect the steel round bars for signs of rust or damage. If any rust spots are detected, they should be promptly cleaned and treated with a rust remover or inhibitor to prevent further corrosion. By following these preventive measures, the rusting of steel round bars can be significantly reduced, ensuring their longevity and maintaining their structural integrity.
- Q: What are the different grades of steel round bars?
- There are several different grades of steel round bars, each with its own unique properties and characteristics. Some of the most common grades include: 1. Mild Steel: Also known as low carbon steel, this grade is the most widely used due to its affordability and versatility. It has a relatively low carbon content and is easy to weld and form. 2. Carbon Steel: This grade contains a higher carbon content than mild steel, making it stronger and more durable. It is commonly used in applications that require high strength and hardness, such as construction and machinery. 3. Alloy Steel: Alloy steel round bars are made by combining different elements, such as chromium, nickel, or molybdenum, with carbon steel. This creates a material with enhanced properties, such as increased corrosion resistance, improved toughness, and higher tensile strength. 4. Stainless Steel: Stainless steel round bars are made primarily from iron and contain a minimum of 10.5% chromium. This grade of steel is known for its excellent corrosion resistance and is commonly used in applications where hygiene and cleanliness are crucial, such as in the food and pharmaceutical industries. 5. Tool Steel: Tool steel round bars are specifically designed to withstand high temperatures, heavy loads, and repeated impacts. They have excellent hardness, wear resistance, and toughness, making them suitable for manufacturing tools and dies. 6. High-Speed Steel (HSS): HSS round bars are a type of tool steel that can withstand high cutting speeds without losing their hardness. They are commonly used in applications that involve cutting, drilling, or machining at high speeds, such as in the manufacturing of drills and milling cutters. These are just a few of the many grades of steel round bars available, each designed to meet specific requirements in various industries and applications. It is important to select the appropriate grade based on factors such as strength, corrosion resistance, and desired properties for a particular project or usage.
- Q: 4145H round steel is equivalent to the domestic brand?
- Round steel is a solid strip of steel whose cross section is round. Its specifications are expressed in diameter, in units of millimeters (mm), such as "50mm", which means a diameter of 50 millimeters of round steel. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts; round steel larger than 25 millimeters, mainly used for making machines.
- Q: What is the difference between a hot-rolled and a cold-drawn steel round bar?
- The main difference between a hot-rolled and a cold-drawn steel round bar lies in the manufacturing process. Hot-rolled steel round bars are formed by heating and rolling the steel at high temperatures, resulting in a rougher surface finish and less precise dimensions. On the other hand, cold-drawn steel round bars are formed by pulling the steel through a die at room temperature, resulting in a smoother surface finish and more precise dimensions. Cold-drawn steel round bars also tend to have improved mechanical properties and a higher strength-to-weight ratio compared to hot-rolled steel round bars.
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HSS Steel Round Bar/High Alloy Round Tool Steel Bar/M2/M25M42/D2/H13
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 33 m.t.
- Supply Capability:
- 2000000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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