High-Quality Round Bar

Ref Price:

Loading Port:: China Main Port

Payment Terms:: TT OR LC

Min Order Qty:: -

Supply Capability:: -

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

You Might Also Like

mild steel round bar

ROUND BAR

40CrMo China Standard Forged Steel Round Bar

Q235, A36 SS400 Hot Rolled Steel Round Bar

Hot Rolled Mild Round Steel Bar Q235, SAE1020,SAE1045

Hot rolled steel round bar for construction

Carbon Structural Steel Round Bars ST37-2CR

Hot Rolled Carbon Steel Round Bars S30C

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: Are steel round bars suitable for use in the manufacturing of springs?: Indeed, steel round bars prove to be a fitting choice when it comes to the fabrication of springs. The widespread use of steel round bars in spring production is owed to their exceptional sturdiness and longevity. The bar's circular form facilitates effortless bending and molding into diverse spring patterns. Moreover, steel boasts exceptional elasticity, rendering it an optimal material for springs that must absorb and retain mechanical energy. Furthermore, steel round bars exhibit commendable resistance to corrosion, an essential attribute for springs subjected to environmental elements. On the whole, steel round bars possess the essential qualities requisite for the creation of superior and dependable springs.

Q: What are the different surface treatments available for tool steel round bars?: Tool steel round bars can be enhanced in performance, durability, and overall quality through various surface treatments. Some common treatments include: 1. Nitriding: Exposing the tool steel to a nitrogen-rich environment at high temperatures forms a hard surface layer, improving wear resistance and reducing friction. 2. Coating: Coating the tool steel round bars with materials like titanium nitride (TiN), titanium carbonitride (TiCN), or chromium nitride (CrN) provides excellent wear, corrosion, and heat resistance. 3. Black oxide: A chemical treatment that forms a black oxide layer on the surface of the tool steel, improving corrosion resistance and reducing the risk of rusting. 4. Heat treatment: Heat treatment processes like annealing, tempering, or quenching can be applied to tool steel round bars to enhance hardness, strength, and toughness. 5. Surface grinding: By removing a thin layer of material from the tool steel's surface, surface grinding achieves a smooth and polished finish, enhancing aesthetics and reducing surface defects. 6. Shot peening: Propelling small metal or ceramic particles onto the tool steel surface at high velocity induces compressive stress, improving fatigue resistance and extending lifespan. 7. Electropolishing: Immersing the tool steel in an electrolyte bath and applying an electric current, electropolishing removes surface imperfections, enhances surface finish, and improves corrosion resistance. Choosing the appropriate surface treatment depends on the specific requirements and applications of tool steel round bars. Each treatment offers unique benefits, significantly enhancing performance and longevity.

Q: Are steel round bars available in custom sizes?: Indeed, one can find steel round bars in custom sizes. Steel manufacturers and suppliers have the capability to produce round bars according to precise size demands and specifications. It is possible to make requests for custom sizes based on the diameter, length, and overall dimensions of the round bar. Whether it is for a particular project or application, numerous steel manufacturers and suppliers provide the opportunity to tailor the size of round bars to cater to individual requirements.

Q: Can steel round bars be coated?: Yes, steel round bars can be coated. Coating steel round bars provides several benefits, including improved corrosion resistance, enhanced durability, and increased aesthetic appeal. The most common types of coatings for steel round bars include galvanized coatings, epoxy coatings, and powder coatings. Galvanized coatings involve the application of a layer of zinc to the surface of the steel, which provides excellent corrosion protection. Epoxy coatings are typically used for industrial applications as they offer superior chemical resistance and can withstand harsh environments. Powder coatings involve the application of a dry powder electrostatically, which is then cured under heat to form a hard, protective layer. These coatings can be applied to steel round bars to protect them from rust and other forms of corrosion, making them suitable for a wide range of applications in various industries such as construction, manufacturing, and automotive.

Q: What are the different types of steel round bars used in the automotive braking systems?: There are several different types of steel round bars that are commonly used in automotive braking systems. These types of steel are specifically chosen for their strength, durability, and ability to withstand the high temperatures and pressures that are generated during braking. One commonly used type of steel round bar is carbon steel. This type of steel is known for its high strength and excellent hardness. Carbon steel round bars are often used in the manufacturing of brake rotors and brake drums. They are able to withstand the friction and heat generated during braking, ensuring reliable performance and longevity. Another type of steel round bar used in automotive braking systems is stainless steel. Stainless steel is highly resistant to corrosion and rust, making it ideal for brake lines and fittings. It also has good heat resistance properties, allowing it to withstand the thermal stresses generated during braking. Some automotive braking systems also utilize alloy steel round bars. Alloy steel is a combination of different metals, such as chromium, nickel, and molybdenum, which enhance its mechanical properties. Alloy steel round bars are known for their high tensile strength and toughness, making them suitable for applications that require a high level of performance and durability. In addition to these commonly used types of steel round bars, there are also specialized types that are designed for specific applications within automotive braking systems. For example, heat-treated steel round bars are used in the manufacturing of brake calipers and pistons, as they can withstand the extreme temperatures generated by the friction between the brake pads and rotors. Overall, the choice of steel round bar in automotive braking systems depends on the specific requirements of the application, such as strength, durability, heat resistance, and corrosion resistance. By selecting the appropriate type of steel, automotive manufacturers can ensure the safety and reliability of their braking systems.

Q: What are the different surface treatments available for carbon steel round bars?: There are several different surface treatments available for carbon steel round bars, each serving a specific purpose and offering unique benefits. Some of the most common surface treatments for carbon steel round bars include: 1. Galvanizing: This treatment involves applying a layer of zinc to the surface of the carbon steel round bar. Galvanizing provides excellent corrosion resistance and can significantly extend the lifespan of the steel. 2. Black oxide coating: Also known as blackening, this treatment creates a dark, uniform finish on the surface of the carbon steel round bar. Black oxide coatings offer mild corrosion resistance and can also provide improved lubricity and a decorative appearance. 3. Chromium plating: This treatment involves depositing a layer of chromium onto the surface of the carbon steel round bar, typically through electroplating. Chromium plating enhances the corrosion resistance of the steel and can also provide improved wear resistance and a polished appearance. 4. Nitriding: Nitriding is a heat treatment process that diffuses nitrogen into the surface of the carbon steel round bar, forming a hard and wear-resistant layer. This treatment improves the hardness and fatigue strength of the steel, making it suitable for applications that require enhanced durability. 5. Phosphating: Phosphating is a chemical treatment that converts the surface of the carbon steel round bar into a layer of phosphate crystals. This treatment provides excellent corrosion resistance and also enhances the adhesion of coatings or paints applied to the steel. 6. Powder coating: Powder coating involves applying a dry powder to the surface of the carbon steel round bar and then curing it under heat to form a protective coating. Powder coatings offer excellent corrosion resistance, durability, and can be customized in various colors and finishes. These are just a few examples of the surface treatments available for carbon steel round bars. The choice of treatment depends on the specific requirements of the application, such as corrosion resistance, wear resistance, aesthetics, and cost-effectiveness.

Q: What is the difference between a rough turned and a seamless steel round bar?: A rough turned steel round bar is a metal bar that has undergone a preliminary turning process to achieve a rougher surface finish. This process removes excess material and helps create a more uniform diameter by eliminating surface imperfections or irregularities. Rough turned bars are commonly used in applications where a smooth surface finish is not necessary, such as in the manufacturing of machinery or agricultural equipment. On the other hand, a seamless steel round bar is a solid metal bar that is formed without any welding or seams. It is manufactured through a process called piercing, where a solid billet is heated and pierced with a mandrel to create a hollow tube. The tube is then elongated and reduced in diameter through rolling and drawing processes until it reaches the desired dimensions. Seamless round bars are known for their superior strength and resistance to corrosion, making them suitable for applications that require high performance, such as in the oil and gas industry or automotive manufacturing. To summarize, the main distinction between a rough turned and a seamless steel round bar lies in their manufacturing processes and surface finishes. Rough turned bars are created by removing excess material to achieve a rougher surface finish, while seamless bars are formed without any welding or seams, resulting in a smooth and continuous surface.

Q: What is the difference between a bright and a hot rolled steel round bar?: The manufacturing processes and resulting characteristics distinguish a bright steel round bar from a hot rolled steel round bar. To produce a hot rolled steel round bar, the steel billet or ingot is heated to a high temperature and then rolled through a series of rolling mills to achieve the desired shape. As a result, the bar has a rough surface texture with a scale layer on the outside. These bars are commonly used in structural applications where strength and durability are crucial. They have a rough appearance and may require additional processing, such as grinding or machining, to achieve a smooth surface finish. In contrast, a bright steel round bar, also known as a cold drawn or cold finished bar, is created by drawing the hot rolled steel bar through a series of dies at room temperature. This process enhances the dimensional accuracy, surface finish, and mechanical properties of the steel. The resulting bright steel bar has a smooth and shiny surface, devoid of scale or rough texture. These bars are frequently used in applications that require an excellent surface finish and tight dimensional tolerances, such as the production of precision components or for decorative purposes. In conclusion, the primary distinction between a bright and a hot rolled steel round bar lies in their surface finish, dimensional accuracy, and applications. Hot rolled steel bars feature a rough surface texture and are suitable for structural applications, while bright steel bars have a smooth and shiny surface finish, making them ideal for precision or decorative applications.

Q: Can steel round bars be used for making springs?: Yes, steel round bars can be used for making springs. Steel is a commonly used material for springs due to its strength, durability, and flexibility. Round bars can be machined and shaped into the desired form for different types of springs, making them suitable for various applications.

Q: What is the maximum nickel content allowed for steel round bars?: The maximum nickel content allowed for steel round bars typically varies depending on the specific grade and industry standards. However, in general, the nickel content in steel round bars is usually limited to around 2-3% to maintain desirable mechanical properties and prevent excessive hardening.

Send your message to us

*Email

*TEL

*Quantity

*Unit