High quality round bar 5-100

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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Product Description:

High Quality Round Bar Details:

Minimum Order Quantity:	25 Tons	Unit:	m.t.	Loading Port:	Tianjin
Supply Ability:	500 Tons Per Day	Payment Terms:	TT or L/C

Product Description:

Specifications of High Quality Round Bar

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 Round Bar

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 Round Bar

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: Theprice 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 Round Bar

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: How do you calculate the shear strength of a steel round bar?: To calculate the shear strength of a steel round bar, you need to know its diameter and the material's shear modulus. The shear strength is determined by dividing the maximum load the bar can withstand before it shears by its cross-sectional area. The formula to calculate the shear strength is as follows: Shear Strength = Maximum Load / Cross-sectional Area To find the cross-sectional area, you need to calculate the area of a circle using the diameter of the round bar. The formula for the area of a circle is: Area = π * (Diameter/2)^2 Once you have the maximum load and the cross-sectional area, you can substitute these values into the shear strength formula to determine the shear strength of the steel round bar. It's important to note that the shear modulus is a critical factor in the calculation. The shear modulus represents the material's resistance to deformation and measures how much shear stress the material can withstand before it starts to deform. The shear modulus value can be obtained from reference materials or technical specifications provided by the manufacturer.

Q: What are the advantages of using duplex steel round bars?: One of the main advantages of using duplex steel round bars is their superior strength and corrosion resistance. Duplex steel is a combination of austenitic and ferritic stainless steels, which provides a unique combination of properties. This type of steel offers higher strength compared to austenitic stainless steel, making it suitable for applications that require durability and load-bearing capacity. Additionally, duplex steel round bars exhibit excellent resistance to corrosion, especially in harsh environments such as marine or chemical industries. This resistance to corrosion makes them a cost-effective choice, as they require less maintenance and have a longer lifespan. Overall, the use of duplex steel round bars can improve the longevity, reliability, and performance of various industrial applications.

Q: What are the advantages of using vanadium-alloy steel round bars?: There are several advantages of using vanadium-alloy steel round bars. Firstly, vanadium-alloy steel has significantly increased strength and toughness compared to regular steel. This makes it an ideal choice for applications where high strength and durability are required, such as in construction, manufacturing, and engineering projects. The addition of vanadium enhances the steel's ability to withstand heavy loads, impacts, and extreme temperatures, making it suitable for demanding environments. Secondly, vanadium-alloy steel round bars have excellent resistance to corrosion. Vanadium forms a protective oxide layer on the surface of the steel, preventing the metal from rusting or corroding. This makes the bars highly durable and long-lasting, even in harsh or corrosive environments. Additionally, vanadium-alloy steel has good weldability and machinability. It can be easily welded, allowing for efficient fabrication and construction processes. The steel's machinability allows for precise shaping and forming, making it adaptable to various design requirements. Furthermore, vanadium-alloy steel exhibits excellent wear resistance. This is particularly beneficial in applications where the bars are subjected to high levels of friction, abrasion, or wear, such as in mining or manufacturing equipment. The addition of vanadium enhances the steel's hardness and wear resistance, prolonging the lifespan of the bars and reducing maintenance costs. Lastly, vanadium-alloy steel has excellent heat resistance. It can withstand high temperatures without losing its strength or structural integrity. This makes it suitable for applications that involve exposure to extreme heat, such as in automotive engines, turbines, or power generation equipment. In conclusion, the advantages of using vanadium-alloy steel round bars include increased strength and toughness, resistance to corrosion, good weldability and machinability, excellent wear resistance, and high heat resistance. These qualities make vanadium-alloy steel round bars a reliable and versatile choice for a wide range of applications.

Q: How do I choose the right grade of steel round bar for my application?: Choosing the right grade of steel round bar for your application requires careful consideration of several factors. Here are some steps to help you make an informed decision: 1. Determine the application requirements: Start by understanding the specific demands of your application. Consider factors such as load-bearing capacity, corrosion resistance, temperature resistance, and any specific industry standards or regulations that may apply. 2. Identify the required mechanical properties: Depending on the application, you may need specific mechanical properties such as strength, hardness, toughness, or ductility. Identify the required values for these properties and prioritize them based on their importance to your application. 3. Consider the environmental conditions: Evaluate the conditions in which the steel round bar will operate. This includes factors such as exposure to moisture, chemicals, high temperatures, or abrasive environments. Some grades of steel are more resistant to corrosion or heat, making them more suitable for specific conditions. 4. Consult with experts: If you are unsure about the best grade of steel for your application, seek advice from professionals such as metallurgists, engineers, or suppliers. They can provide valuable insights based on their expertise and experience. 5. Compare different grades: Once you have a clear understanding of your application requirements, research and compare different grades of steel round bars available on the market. Consider factors such as composition, manufacturing process, and specific properties of each grade. Look for grades that closely match your requirements. 6. Review industry standards and specifications: Check if there are any industry standards or specifications that dictate the use of specific grades for your application. These standards can provide guidance and ensure compliance with safety and quality requirements. 7. Evaluate cost-effectiveness: Evaluate the cost-effectiveness of different grades by considering factors such as initial purchase cost, maintenance and replacement costs, and the overall lifespan of the steel round bar. 8. Conduct tests and trials: If possible, conduct tests or trials using different grades of steel round bars to assess their performance in your specific application. This can provide valuable data and help you make a more informed decision. By following these steps and considering all relevant factors, you can choose the right grade of steel round bar that will meet the demands of your application efficiently and effectively.

Q: What are the typical hardness values for different grades of steel round bars?: The hardness values for different grades of steel round bars can vary depending on the specific grade and the manufacturing process used. However, there are some typical hardness values that can be used as a general guideline. For low carbon or mild steel round bars, the typical hardness values range from about 120 to 250 Brinell Hardness (HB). These grades of steel are known for their relatively low strength and hardness but can be easily machined and welded. Medium carbon steel round bars, commonly used in applications that require higher strength and hardness, typically have hardness values ranging from about 200 to 400 HB. These grades of steel are often used in construction, automotive, and machinery industries. High carbon or alloy steel round bars, which offer even greater strength and hardness, can have hardness values ranging from 400 to 700 HB or even higher. These grades of steel are commonly used in applications that require high wear resistance, such as cutting tools, gears, and bearings. It is important to note that these hardness values are approximate and can vary depending on factors such as heat treatment, alloy composition, and the specific manufacturing process employed. Therefore, it is always recommended to consult the manufacturer's specifications or conduct hardness testing to determine the exact hardness values for a specific grade of steel round bar.

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 is typically around 0.85.

Q: What are the different safety considerations when working with steel round bars?: When working with steel round bars, there are several safety considerations to keep in mind. First and foremost, it is important to wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and steel-toed boots to protect against potential hazards. Additionally, one should always handle the steel bars with care to avoid injuries from sharp edges or heavy lifting. It is crucial to ensure a secure and stable work area to prevent slips, trips, and falls. Furthermore, when using tools or machinery to cut or shape the steel bars, proper training and caution should be exercised to prevent accidents and follow all recommended safety procedures.

Q: Can steel round bars be machined easily?: Yes, steel round bars can be machined easily due to their excellent machinability properties.

Q: Can steel round bars be used for making renewable energy systems?: Yes, steel round bars can be used for making renewable energy systems. Steel is a versatile material that is commonly used in various industries, including renewable energy. It is strong, durable, and resistant to corrosion, making it ideal for constructing frameworks, support structures, and components of renewable energy systems. Steel round bars can be used to manufacture wind turbine towers, solar panel frames, and support structures for hydroelectric power systems. Wind turbine towers require a strong and stable structure to support the weight of the turbine and withstand the forces of wind. Steel round bars provide the necessary strength and stability, ensuring the safety and efficiency of the wind turbine. Similarly, solar panel frames need to be sturdy enough to support the weight of the panels and withstand harsh weather conditions. Steel round bars can be used to construct durable frames that can securely hold the solar panels in place. In the case of hydroelectric power systems, steel round bars can be used to build support structures for various components, such as turbines, generators, and penstocks. These structures need to withstand the immense pressure and force of water flow, and steel's strength and durability make it an excellent choice for this purpose. Overall, steel round bars are a reliable and commonly used material in the construction of renewable energy systems. Their strength, durability, and resistance to corrosion make them suitable for various applications, helping to ensure the long-term viability and sustainability of renewable energy sources.

Q: What is the minimum diameter available for steel round bars?: The minimum diameter available for steel round bars can vary depending on the specific manufacturing and supplier capabilities. However, in general, steel round bars can be found in a wide range of diameters starting from as small as 1/8 inch (3.175 mm) and going up to several inches or even larger. It is best to consult with steel suppliers or manufacturers to determine the exact minimum diameter available for steel round bars based on your specific requirements.

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