45# China Standard Forged Steel Round Bar

45# China Standard Forged Steel Round Bar System 1

45# China Standard Forged Steel Round Bar

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Loading Port:: Shanghai

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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Product Description:

OKorder is offering Round Bar at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.

Product Applications:

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.

Product Advantages:

OKorder's Round Bar are durable, strong, and resist corrosion.

Main Product Features:

· Premium quality

· Prompt delivery & seaworthy packing (30 days after receiving deposit)

· Corrosion resistance

· Can be recycled and reused

· Mill test certification

· Professional Service

· Competitive pricing

Product Specifications:

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

Material: Mild Steel

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

FAQ:

Q1: Why buy Materials & Equipment from OKorder.com?

A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.

Q2: How do we guarantee the quality of our products?

A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.

Q3: How soon can we receive the product after purchase?

A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.

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45# China Standard Forged Steel Round Bar

Q: Lightning protection earthing zinc plating flat iron and round steel welding method, need to flat iron wrapped in round steel outside welding?: Unwanted。 The round bar shall be welded directly on flat steel, requiring both sides of the round bar to be welded, and the length of lap welding shall be 6 times of the diameter of round steel.

Q: How are steel round bars used in the manufacturing of material handling equipment?: Steel round bars are commonly used in the manufacturing of material handling equipment to provide strength, durability, and stability. These bars are often used as structural components in the construction of frames, supports, and lifting mechanisms. They can also be machined or shaped into shafts, axles, or rollers, allowing for smooth and efficient movement of materials. Overall, steel round bars play a crucial role in enhancing the performance and reliability of material handling equipment.

Q: What is the maximum weight capacity of a steel round bar?: The maximum weight capacity of a steel round bar depends on its diameter, length, and the specific type of steel used.

Q: Are steel round bars available in different lengths?: Yes, steel round bars are available in different lengths. Steel round bars come in various lengths to accommodate different needs and applications. The length options can vary depending on the supplier or manufacturer. Common lengths for steel round bars range from 6 to 12 feet, but custom lengths can also be obtained through special requests. The availability of different lengths allows for greater flexibility in construction and fabrication projects, as it enables the bars to be cut or modified to specific requirements.

Q: Can steel round bars be coated with protective finishes?: Yes, steel round bars can be coated with protective finishes. Coating steel round bars with protective finishes is a common practice to enhance their durability and resistance to corrosion. There are various types of protective finishes that can be applied to steel round bars, including but not limited to galvanizing, powder coating, and epoxy coating. These finishes help to prevent the steel bars from rusting and deteriorating over time, extending their lifespan and ensuring their performance in various environments. The choice of protective finish depends on factors such as the intended use of the steel round bars, the level of exposure to moisture or corrosive substances, and the desired aesthetic appearance.

Q: Are steel round bars suitable for high-temperature applications?: Steel round bars can be suitable for high-temperature applications depending on the specific grade and composition of the steel. Certain grades of steel, such as stainless steel or heat-resistant alloys, are specifically designed to withstand high temperatures without losing their mechanical properties. These steel grades have high melting points, excellent heat resistance, and good oxidation resistance, making them ideal for applications in industries such as aerospace, automotive, and power generation. Stainless steel round bars, for example, exhibit excellent corrosion resistance and high strength at elevated temperatures. They can withstand temperatures up to 800-900 degrees Celsius without significant loss of mechanical properties. Additionally, heat-resistant alloys like Inconel or Hastelloy are used in extreme high-temperature environments, such as gas turbines or petrochemical plants, where temperatures can exceed 1000 degrees Celsius. However, not all steel round bars are suitable for high-temperature applications. Carbon steels, for instance, are prone to oxidation and loss of strength at elevated temperatures. Low-grade steel round bars may also experience deformation, softening, or even failure under high-temperature conditions. Therefore, it is crucial to select the appropriate steel grade and consult with experts or engineers to determine the suitability of steel round bars for specific high-temperature applications.

Q: What are the different types of steel round bar surface finishes for improved lubricity?: There are several different types of steel round bar surface finishes that can be used to improve lubricity. 1. Smooth Finish: This is the most basic type of finish, where the surface of the round bar is made smooth through processes like grinding or polishing. A smooth finish helps to reduce friction and provides a good base for applying lubricants. 2. Chrome Plating: Chrome plating involves electroplating a layer of chromium onto the surface of the round bar. This creates a hard, smooth, and corrosion-resistant surface that provides excellent lubricity. Chrome plating is commonly used in applications where low friction and wear resistance are required. 3. Nitriding: Nitriding is a surface hardening process that involves diffusing nitrogen into the surface of the round bar. This creates a hard layer that enhances the lubricity of the steel. Nitriding is often used in applications where high wear resistance and improved lubrication are important. 4. Black Oxide: Black oxide is a chemical conversion coating that forms a black surface on the steel round bar. This finish provides a thin layer of protection against corrosion and also improves lubricity. Black oxide is commonly used in applications where lubricity is essential but a decorative appearance is not required. 5. Teflon Coating: Teflon coating, also known as PTFE (polytetrafluoroethylene) coating, involves applying a thin layer of Teflon onto the surface of the round bar. This coating provides excellent lubricity and low friction properties. Teflon coating is often used in applications where non-stick properties are required, such as in food processing or packaging industries. These are just a few examples of the different types of steel round bar surface finishes that can be used to improve lubricity. The choice of finish depends on the specific application requirements and the desired level of lubrication and wear resistance.

Q: How are steel round bars made?: Hot rolling is the method used to produce steel round bars. It starts by heating a large rectangular steel billet until it becomes malleable. Then, the heated billet is fed through a series of rolling stands that gradually decrease its thickness and give it a round shape. To begin the hot rolling process, the billet is placed in a furnace and subjected to extremely high temperatures, typically ranging from 1200 to 1300 degrees Celsius. This high heat makes the steel more pliable and easier to manipulate. Once the billet is heated, it is introduced into a rolling mill. This mill consists of rollers that progressively reduce the thickness and elongate the billet. Each set of rollers squeezes and stretches the billet, gradually forming it into a round shape. The number of passes through the rolling mill depends on the desired final size and shape of the round bar. While the rolling process takes place, the steel bar is also cooled to prevent overheating and ensure proper metallurgical properties. This cooling can be achieved through the use of a water spray or air cooling system. After the bar has been shaped and cooled, it is cut into the desired lengths. The cut bars then undergo further processes, including straightening, surface treatment, and quality testing. These additional steps guarantee that the steel round bars meet the required specifications and standards. In conclusion, the production of steel round bars involves heating a steel billet, passing it through a series of rolling stands to shape it into a round bar, cooling it, and cutting it into the desired lengths. This process enables the creation of robust and long-lasting round bars that serve various applications in industries like construction, manufacturing, and engineering.

Q: What are the advantages of using chromium-molybdenum alloy steel round bars?: Chromium-molybdenum alloy steel round bars offer numerous benefits: 1. Exceptional Strength: These bars possess outstanding strength characteristics, rendering them suitable for applications requiring durability and high levels of strength. Consequently, they excel in heavy machinery, construction equipment, and other demanding applications. 2. Resistance to Corrosion: The inclusion of chromium in the alloy steel composition enhances its resistance to corrosion. This quality makes chromium-molybdenum alloy steel round bars highly impervious to rust and other forms of corrosion. Consequently, they are ideal for use in harsh environments and outdoor applications. 3. Impressive Heat Resistance: Chromium-molybdenum alloy steel round bars exhibit excellent resistance to high temperatures without compromising their structural integrity. This trait makes them suitable for applications subjected to extreme heat, such as boilers, pressure vessels, and heat exchangers. 4. Superior Wear Resistance: The presence of molybdenum in the alloy steel composition provides exceptional wear resistance properties. As a result, chromium-molybdenum alloy steel round bars can withstand the effects of wear and abrasion, making them ideal for applications involving high levels of friction and wear, such as mining equipment, drilling tools, and automotive components. 5. Excellent Machinability: Chromium-molybdenum alloy steel round bars possess excellent machinability, allowing them to be easily shaped and formed into various configurations. This characteristic makes them suitable for applications that require complex shapes and designs, including automotive parts, machine components, and tooling. Overall, the benefits offered by chromium-molybdenum alloy steel round bars have made them a popular choice across various industries. Their high strength, corrosion resistance, heat resistance, wear resistance, and good machinability make them a reliable and versatile material for numerous demanding applications.

Q: What is the difference between a cold finished and a hot rolled steel round bar?: The main difference between a cold finished and a hot rolled steel round bar lies in the manufacturing process. Cold finished steel round bars undergo a process called cold drawing, where they are pulled through a die at room temperature to achieve the desired shape and size. This process enhances the precision and surface finish of the steel, resulting in a smoother and more polished appearance. On the other hand, hot rolled steel round bars are formed by heating the steel billet or ingot to high temperatures and rolling it through a series of rollers, which creates the desired shape. Hot rolled steel round bars typically have a rougher surface texture and may contain imperfections due to the rapid cooling process. Overall, cold finished steel round bars are known for their superior dimensional accuracy and surface quality, while hot rolled steel round bars are more cost-effective and suitable for applications where a smooth finish is not critical.

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