High quality round bar 5-100

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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 steel round bars compare to other types of steel products?: Steel round bars have several advantages over other types of steel products. Firstly, their cylindrical shape makes them highly versatile and easy to work with, allowing for various applications in construction, manufacturing, and engineering. Secondly, round bars have superior strength and durability, making them ideal for load-bearing structures and heavy-duty machinery. Additionally, their uniformity and smooth surface facilitate precision machining and fabrication processes. Lastly, steel round bars offer excellent resistance to corrosion and wear, ensuring a longer lifespan compared to other steel products. Overall, their unique properties and versatility make steel round bars a preferred choice for many industries.

Q:Can steel round bars be used for making medical equipment?: Yes, steel round bars can be used for making medical equipment. Steel is a versatile and durable material that is commonly used in the manufacturing of medical instruments and equipment. It possesses excellent strength and can withstand high levels of stress and pressure, making it suitable for a wide range of medical applications. Additionally, steel is resistant to corrosion and can be easily sterilized, ensuring that the medical equipment remains hygienic and safe for use. Steel round bars can be machined, shaped, and formed into various medical instruments such as surgical tools, implants, braces, and prosthetics. Therefore, steel round bars are a viable option for producing medical equipment due to their strength, durability, and compatibility with sterilization processes.

Q:What are the different surface treatments available for stainless steel round bars?: There are several surface treatments available for stainless steel round bars to enhance their appearance, improve corrosion resistance, and provide added protection. Some of the common surface treatments for stainless steel round bars include: 1. Pickling: This process involves removing any surface impurities or oxides by immersing the stainless steel bar in an acid solution. Pickling helps to restore the stainless steel's natural corrosion resistance and creates a smooth and clean surface. 2. Passivation: Passivation is a chemical treatment that forms a thin, protective layer on the surface of stainless steel. By removing free iron and other contaminants, passivation helps to enhance the stainless steel's resistance to corrosion. 3. Electropolishing: This treatment involves applying an electric current to the stainless steel round bar while immersed in an electrolyte solution. Electropolishing removes a thin layer of material from the surface, resulting in a smooth, shiny, and corrosion-resistant finish. 4. Grinding and Polishing: Grinding and polishing are mechanical processes used to improve the surface finish of stainless steel round bars. Grinding involves removing any imperfections or roughness, while polishing creates a smooth and reflective surface. 5. Coating: Coating stainless steel round bars with a protective layer can provide additional corrosion resistance. Common coatings include electroplating with zinc or nickel, as well as applying organic coatings like paints or powder coatings. 6. Shot blasting: This treatment involves bombarding the stainless steel round bar's surface with small metallic or non-metallic particles at high velocity. Shot blasting removes any surface contaminants, scales, or oxides, resulting in a clean and textured surface. It is important to note that the choice of surface treatment depends on the desired end-use application, as well as the specific requirements for appearance and corrosion resistance. Consulting with a professional or manufacturer can help determine the most suitable surface treatment for stainless steel round bars.

Q:Can steel round bars be used in the manufacturing of fasteners?: Yes, steel round bars can be used in the manufacturing of fasteners. Steel round bars are often used as raw materials to create fasteners such as screws, bolts, and nuts. The round shape of the bars allows for easy shaping and machining to meet the desired specifications of the fasteners. Additionally, steel is a strong and durable material that provides the necessary strength and resilience required for fasteners to withstand various applications and loads. Therefore, steel round bars are commonly utilized in the manufacturing of fasteners due to their mechanical properties and versatility.

Q:What are the advantages of using sulfur-alloy steel round bars?: There are several advantages of using sulfur-alloy steel round bars. Firstly, sulfur-alloy steel round bars offer improved machinability, making it easier to shape and cut the material into desired forms. Additionally, the sulfur content in the alloy enhances the overall strength and hardness of the steel, making it more durable and resistant to wear and tear. Moreover, sulfur-alloy steel round bars have excellent thermal conductivity, allowing for efficient heat transfer during various applications. Lastly, these bars are cost-effective as they offer a combination of desirable properties at a relatively lower price compared to other specialized alloys.

Q:How do you store steel round bars to prevent damage?: To prevent damage to steel round bars, they should be stored in a clean and dry environment, away from moisture and direct sunlight. It is recommended to store them horizontally on a flat surface or on racks, ensuring they are not stacked too high to avoid bending or warping. Additionally, using protective coverings or plastic caps on the ends can help prevent any potential scratches or dents during storage.

Q:What are the advantages of using shock-resistant steel round bars?: The advantages of using shock-resistant steel round bars are that they have high strength and toughness, making them suitable for applications where there is a high risk of impact, vibrations, or sudden loadings. These bars can withstand heavy loads and absorb energy, reducing the risk of structural failure or damage. Additionally, shock-resistant steel round bars offer improved resistance to wear, corrosion, and fatigue, resulting in longer service life and reduced maintenance costs.

Q:Can steel round bars be used in the automotive manufacturing?: Yes, steel round bars can be used in automotive manufacturing. Steel round bars offer high strength and durability, making them suitable for various automotive components such as crankshafts, camshafts, axles, and suspension parts. They also provide excellent machinability and can be easily fabricated into the required shapes and sizes, making them a preferred choice in the automotive industry.

Q:Can steel round bars be heat treated to enhance their properties?: Yes, steel round bars can be heat treated to enhance their properties. Heat treatment processes such as quenching, tempering, and annealing can be applied to steel round bars to increase their hardness, strength, and toughness. These treatments can also improve other properties like wear resistance and machinability, making the steel bars more suitable for specific applications.

Q:What are the different grades of alloy steel round bars?: Alloy steel round bars come in various grades, each with unique properties and characteristics. Some of the different grades of alloy steel round bars include: 1. 4140: This grade of alloy steel round bar is known for its high strength, toughness, and abrasion resistance. It is commonly used in applications such as axles, shafts, and gears. 2. 4340: This grade of alloy steel round bar is known for its excellent hardenability and high tensile strength. It is often used in applications that require high strength and durability, such as aircraft landing gear components and crankshafts. 3. 8620: This grade of alloy steel round bar is known for its case hardening properties, making it suitable for applications that require a combination of toughness and wear resistance. It is commonly used in gears, pinions, and camshafts. 4. 316: This grade of alloy steel round bar is a stainless steel grade that offers excellent corrosion resistance, making it suitable for applications in marine environments or where exposure to corrosive substances is a concern. 5. 52100: This grade of alloy steel round bar is known for its high hardness and wear resistance. It is commonly used in the manufacturing of bearings and other high-wear components. 6. 4340M: This grade of alloy steel round bar is similar to 4340, but with added molybdenum for improved hardenability and strength. It is often used in applications that require high strength and toughness, such as aircraft landing gear components and crankshafts. These are just a few examples of the different grades of alloy steel round bars available. The choice of grade will depend on the specific requirements of the application, such as desired mechanical properties, corrosion resistance, and heat treatment capabilities.

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