Plain Round Bar

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Loading Port:: China Main Port

Payment Terms:: TT OR LC

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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: 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 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: What is the minimum yield strength of steel round bars?: The specific grade and type of steel being used can cause the minimum yield strength of steel round bars to vary. However, the majority of steel round bars generally possess a minimum yield strength of 36,000 psi (pounds per square inch) or 250 megapascals (MPa). This minimum yield strength ensures that the steel round bars are strong enough to resist applied loads and avoid deformation or failure. It is worth mentioning that certain applications may demand steel round bars with higher yield strengths to fulfill particular performance criteria.

Q: Are steel round bars susceptible to rust?: Steel round bars are indeed susceptible to rust. Rust is the result of a chemical reaction between iron and oxygen in the presence of moisture. Since steel is primarily made of iron, it can rust when exposed to air and moisture. However, the susceptibility to rust can be reduced by taking certain preventive measures. Steel round bars can be coated with protective layers such as paint, oil, or galvanized coatings to create a barrier between the steel and the surrounding environment, thus preventing or delaying the onset of rust. Regular maintenance, including cleaning and reapplying protective coatings, can further help in minimizing the risk of rust formation on steel round bars.

Q: What are the different types of steel round bar alloys used in the aerospace industry?: In the aerospace industry, various steel round bar alloys are commonly used to meet the specific demands of different applications. These alloys have been specifically designed to meet the rigorous requirements of the aerospace sector, including the need for high strength, corrosion resistance, and lightweight properties. 1. Stainless Steel: Among the alloys used in aerospace applications, stainless steel stands out as one of the most popular choices. It possesses excellent corrosion resistance, high strength, and good heat resistance. Aircraft components like landing gear, fasteners, and engine parts often employ this alloy. 2. Titanium Alloy: Due to its exceptional strength-to-weight ratio, titanium alloys find widespread use in the aerospace industry. They offer excellent corrosion resistance, good fatigue strength, and can withstand high temperatures. Aircraft frames, engine components, and landing gear often utilize titanium alloys. 3. Aluminum Alloy: Aerospace applications benefit from the lightweight nature and excellent mechanical properties of aluminum alloys. These alloys possess good corrosion resistance and are commonly used in aircraft structures, wings, and fuselage components. 4. Nickel Alloy: Known for their high strength and exceptional resistance to extreme temperatures, nickel alloys are frequently employed in aerospace applications. They are critical in environments requiring resistance to heat, wear, and corrosion, such as turbine engines and exhaust systems. 5. High-Strength Low-Alloy (HSLA) Steel: HSLA steels are renowned for their high strength and weldability. They offer good toughness and impact resistance, making them ideal for aerospace applications where durability and strength are essential, such as in landing gear and structural components. In summary, the aerospace industry employs a combination of these steel round bar alloys to cater to the specific requirements of different components and applications. Each alloy possesses unique properties that render it suitable for specific aerospace applications, ensuring the safety, reliability, and performance of aircraft in the demanding aerospace environment.

Q: Can steel round bars be used for making fasteners?: Certainly! Fasteners can indeed be made using steel round bars. Manufacturers commonly utilize steel round bars to produce fasteners like bolts, screws, and rivets. The strength and durability of steel make it an excellent choice for fasteners, as it can endure significant stress and ensure a secure connection. Moreover, steel round bars can be conveniently machined and threaded to achieve the desired shape and size required for fasteners. In summary, steel round bars are highly dependable and frequently employed in the manufacturing process of fasteners.

Q: How do you measure the length of a steel round bar?: To measure the length of a steel round bar, you can use a measuring tape or a ruler. Simply place one end of the measuring tool at the starting point of the bar, and extend it until you reach the other end. Ensure that the measuring tool is aligned correctly with the bar for an accurate measurement.

Q: Can steel round bars be used in the manufacturing of agricultural equipment?: Yes, steel round bars can be used in the manufacturing of agricultural equipment. Steel round bars are commonly used in the construction of various types of agricultural machinery and equipment due to their strength, durability, and versatility. They can be used to make components such as axles, shafts, and pins, which are essential for the proper functioning of agricultural equipment. Steel round bars offer high tensile strength, which makes them capable of withstanding heavy loads and harsh working conditions typically encountered in agricultural operations. Additionally, steel round bars can be easily machined, welded, and formed into different shapes and sizes, providing flexibility in manufacturing agricultural equipment to meet specific requirements. Overall, the use of steel round bars in the manufacturing of agricultural equipment ensures reliable and long-lasting performance, making them a preferred choice for the industry.

Q: Can steel round bars be painted or coated?: Yes, steel round bars can be painted or coated. Painting or coating steel round bars is a common practice to enhance their appearance, protect them from corrosion, and provide additional functionality. The process typically involves cleaning the surface of the bars to remove any dirt, grease, or rust, and then applying a primer or base coat followed by a topcoat or finish. The type of paint or coating used will depend on the specific requirements of the application, such as the desired color, level of protection, or resistance to environmental conditions. Additionally, certain coatings can provide specific properties like anti-slip, heat resistance, or chemical resistance. Overall, painting or coating steel round bars is an effective way to improve their aesthetics and durability.

Q: What are the advantages of using aluminum-magnesium alloy steel round bars?: Aluminum-magnesium alloy steel round bars offer several benefits: 1. Lightweight: With its lower density compared to traditional steel, aluminum-magnesium alloy steel is a lightweight material. This is advantageous in industries like aerospace and automotive where weight reduction is crucial. It improves fuel efficiency and increases payload capacity. 2. Corrosion resistance: Aluminum-magnesium alloy steel has excellent resistance to corrosion. The addition of magnesium enhances its ability to withstand harsh environments, including moisture, chemicals, and saltwater. It is ideal for marine applications and areas with high humidity or corrosive atmospheres. 3. High strength-to-weight ratio: Despite being lightweight, aluminum-magnesium alloy steel is highly strong. It offers a superior strength-to-weight ratio compared to other materials, allowing for the construction of durable structures. This is valuable in applications like construction where both strength and weight are important factors. 4. Excellent machinability: Aluminum-magnesium alloy steel is easy to machine, making it suitable for a variety of fabrication processes. It can be cut, drilled, and welded with ease, enabling efficient manufacturing and assembly. This saves time and costs while allowing for complex designs and customization. 5. Thermal conductivity: Aluminum-magnesium alloy steel has excellent thermal conductivity, facilitating efficient heat transfer. This property is valuable in applications such as heat exchangers, cooling systems, and electrical conductors. It prevents overheating and improves overall performance. 6. Recyclability: Aluminum-magnesium alloy steel is highly recyclable, making it an environmentally friendly choice. It can be melted down and reused, reducing the need for raw materials and minimizing waste. Recycling aluminum-magnesium alloy steel requires less energy compared to primary production, making it a sustainable option. In conclusion, the advantages of aluminum-magnesium alloy steel round bars make it a versatile and cost-effective material for various applications. Its lightweight nature, corrosion resistance, high strength-to-weight ratio, excellent machinability, thermal conductivity, and recyclability make it a preferred choice in industries where these properties are essential.

Q: What is the average cost of steel round bars?: The cost of steel round bars can change depending on several factors, including size, grade, and market conditions. Normally, steel round bars are priced between $0.50 and $5 per pound. Nevertheless, it is worth mentioning that these prices are only estimates and can vary depending on the specific needs and location of the purchase. Moreover, it is essential to consider additional expenses like transportation, processing, and applicable taxes to determine the total cost. To obtain the most accurate and current information on the average cost of steel round bars in your region, it is advisable to consult local suppliers or conduct market research.

Q: Are steel round bars suitable for marine environments?: Yes, steel round bars can be suitable for marine environments, but it depends on the specific type of steel used and the conditions of the marine environment. Stainless steel is often the preferred choice for marine applications due to its excellent corrosion resistance properties. Stainless steel contains chromium, which forms a protective layer on the surface of the steel, preventing corrosion and rusting. However, not all steel round bars are suitable for marine environments. Carbon steel, for example, is more susceptible to corrosion in marine environments, especially in the presence of saltwater. Carbon steel should be carefully protected with coatings or treatments to prevent corrosion. Additionally, the conditions of the marine environment also play a significant role in determining the suitability of steel round bars. Factors such as the salinity of the water, exposure to chemicals, temperature variations, and physical stress can affect the corrosion resistance of steel. In highly corrosive marine environments, it is advisable to use specialized marine-grade stainless steel or other corrosion-resistant alloys. Ultimately, it is crucial to select the appropriate grade of steel and consider additional protective measures, such as coatings or galvanization, to enhance the durability and longevity of steel round bars in marine environments.

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