Round Bar High Quality Q195 Q235 5MM-28MM Hot Rolled

Round Bar High Quality Q195 Q235 5MM-28MM Hot Rolled System 1

Round Bar High Quality Q195 Q235 5MM-28MM Hot Rolled

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Product Description:

OKorder is offering high quality Round Bar High Quality Q195 Q235 5MM-28MM Hot Rolledat 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.

4) Is used for cold forging die and drawing mode, etc.

5) Recommended watchcase factory, screw factory and other cold stamping products industry use.

Product Advantages:

OKorder's Round Bar High Quality Q195 Q235 5MM-28MM Hot Rolledare 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:

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

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.

Round Bar High Quality Q195 Q235 5MM-28MM Hot Rolled

Q: What is the difference between a forged and a peeled steel round bar?: A forged steel round bar and a peeled steel round bar are both types of steel bars used in various industries for different applications. However, there are distinct differences between the two in terms of their manufacturing processes and physical characteristics. A forged steel round bar is made by heating a solid steel billet to a high temperature and then applying pressure to shape it into the desired form. This process involves the use of machinery, such as hammers or presses, to shape the steel and create the round bar. The forging process imparts strength and durability to the steel, making it suitable for applications that require high strength and resistance to wear and tear. On the other hand, a peeled steel round bar is produced through a different manufacturing process known as peeling or turning. In this process, a solid steel bar is rotated against a cutting tool, which removes the outer layer of the bar, resulting in a smooth and precise surface finish. Peeling removes any surface defects or imperfections present in the original bar, improving its dimensional accuracy and surface quality. In terms of physical characteristics, forged steel round bars typically have a rougher surface texture due to the nature of the forging process. This rough texture can provide enhanced grip or adhesion when used in certain applications. Additionally, forged bars often have a denser and more uniform internal grain structure, which contributes to their superior mechanical properties. Peeled steel round bars, on the other hand, possess a smooth and shiny surface finish as a result of the peeling process. This smooth surface makes peeled bars suitable for applications that require aesthetic appeal or require a low coefficient of friction. However, the peeling process may result in a slight reduction in the overall diameter of the bar. In summary, the main difference between a forged and a peeled steel round bar lies in their manufacturing processes and resulting physical characteristics. Forged bars are created through the application of pressure, resulting in a rougher surface texture and superior mechanical properties. Peeled bars, on the other hand, are produced by removing the outer layer of a steel bar, resulting in a smooth surface finish and improved dimensional accuracy. The choice between these two types of bars ultimately depends on the specific requirements of the application at hand.

Q: What are the advantages of using nickel-titanium alloy steel round bars?: Nickel-titanium (NiTi) alloy steel round bars offer several benefits. Firstly, they possess exceptional shape memory and superelasticity properties. This means that they can be bent or deformed and then return to their original shape when heated or when stress is removed. This unique characteristic makes them perfect for applications requiring flexibility and resilience, such as surgical instruments or orthodontic wires in the medical field. Another advantage of NiTi alloy steel round bars is their high resistance to corrosion. Both nickel and titanium are highly resistant to corrosion, making the alloy extremely durable and long-lasting. This makes them suitable for industrial applications, including marine environments where exposure to moisture and saltwater can cause corrosion in other metals. Additionally, NiTi alloy steel round bars have a high strength-to-weight ratio. Despite being lightweight, they possess excellent mechanical properties, including high tensile strength and good fatigue resistance. This makes them suitable for engineering and structural applications in industries like aerospace, automotive, and construction. The bars' lightweight nature also allows for easier handling and transportation. Moreover, NiTi alloy steel round bars demonstrate excellent thermal stability, with a wide temperature range of usability. They can withstand extreme temperatures without losing their shape memory or superelasticity properties. This makes them suitable for applications involving exposure to high or low temperatures, such as in the aerospace or oil and gas industries. To sum up, the benefits of using NiTi alloy steel round bars include their shape memory and superelasticity properties, high resistance to corrosion, high strength-to-weight ratio, and excellent thermal stability. These qualities make them a versatile and reliable choice for a wide range of applications in various industries.

Q: What is the elongation of a steel round bar?: The elongation of a steel round bar refers to the amount it stretches or deforms when subjected to a tensile force. It is a measure of the bar's ability to withstand tension and is typically expressed as a percentage of the original length. The elongation is determined by the material properties of the steel, including its composition, grain structure, and heat treatment. Factors such as the applied force, temperature, and speed of loading also influence the elongation. Steel round bars generally exhibit a significant elongation before reaching their breaking point, making them suitable for structural applications that require high strength and ductility.

Q: What are the advantages of using nitriding steel round bars?: Nitriding steel round bars offer numerous benefits. Firstly, they possess a remarkable surface hardness. Through the nitriding process, nitrogen diffuses into the outer layer of the steel, creating a hard nitride layer. This greatly enhances the wear resistance and durability of the round bars, rendering them suitable for applications involving heavy loads or abrasive environments. Secondly, the fatigue strength of nitriding steel round bars is improved. The nitride layer formed during the nitriding process also enhances the steel's ability to withstand fatigue. Consequently, the round bars can endure repeated loading and high-stress conditions without experiencing premature failure. Moreover, nitriding steel round bars exhibit outstanding corrosion resistance. The nitride layer acts as a barrier against corrosive elements, such as moisture, chemicals, or saltwater, effectively protecting the underlying steel. This makes them ideal for use in harsh environments where corrosion is a concern, such as the marine or chemical industries. Furthermore, nitriding steel round bars retain a high surface hardness even at elevated temperatures. Unlike other surface hardening processes that rely on thin coatings, nitriding modifies the surface layer of the steel, resulting in a stable hardened layer that withstands high temperatures. This ensures that the round bars maintain their hardness and mechanical properties even in demanding heat-intensive applications. In conclusion, the advantages of utilizing nitriding steel round bars include high surface hardness, improved fatigue strength, excellent corrosion resistance, and high surface hardness retention at elevated temperatures. These properties make them the preferred choice for various applications in industries such as automotive, aerospace, manufacturing, and construction.

Q: Can steel round bars be used for making suspension springs?: Yes, steel round bars can be used for making suspension springs. Steel is a common material choice for suspension springs due to its strength, durability, and ability to withstand high loads and vibrations. Steel round bars can be readily shaped, tempered, and heat-treated to meet the specific requirements of suspension springs, providing necessary flexibility and resilience.

Q: What are the specifications and standards for steel round bars?: The specifications and standards for steel round bars vary depending on their intended use and industry requirements. However, there are general specifications and standards that apply to most steel round bars. To start, the dimensions of steel round bars are typically specified in terms of diameter, length, and tolerance levels. The diameter can range from a few millimeters to several inches, while the length can vary according to customer needs. Tolerance levels indicate the allowable deviation from the specified dimensions, ensuring the bars meet desired accuracy and consistency. In terms of material composition, steel round bars are predominantly made from carbon steel, alloy steel, or stainless steel. The specific grade and composition depend on the application, such as structural, construction, automotive, or aerospace. These grades are established by organizations like ASTM or ISO, which define the chemical composition, mechanical properties, and other characteristics of the steel. Steel round bars must meet certain standards for mechanical properties to ensure their strength, ductility, and resilience. These properties include tensile strength, yield strength, elongation, hardness, impact resistance, and more. Relevant organizations like ASTM or ISO specify the standards for these properties, providing guidelines for manufacturers and users to ensure the bars are suitable for their intended applications. Surface finish is another important aspect of steel round bars. Standard surface finish options include black, peeled, ground, polished, or chrome-plated, among others. These finishes impact appearance, corrosion resistance, and ability to withstand wear and tear. Additionally, steel round bars may need to adhere to specific standards for heat treatment, such as annealing, quenching, or tempering, to enhance their mechanical properties or improve machinability. Overall, the specifications and standards for steel round bars cover dimensions, material composition, mechanical properties, surface finish, and heat treatment requirements. These standards ensure that steel round bars meet necessary quality, performance, and safety criteria for their designated applications. Manufacturers, suppliers, and end-users must be aware of these specifications and standards to select and use steel round bars appropriately.

Q: What are the different types of defects that can occur in steel round bars?: Some common types of defects that can occur in steel round bars include surface defects such as cracks, pits, and scratches, as well as internal defects like inclusions, segregation, and porosity. Additionally, steel round bars can also experience dimensional defects such as ovality, taper, and straightness issues.

Q: What are the different surface treatments for steel round bars?: Steel round bars offer a variety of surface treatments, each serving a specific purpose and offering unique advantages. Here are some of the most common treatments: 1. Hot-dip galvanizing: To prevent corrosion and rusting, steel round bars are immersed in molten zinc, creating a protective coating. This treatment is ideal for outdoor or corrosive environments. 2. Painting: Applying paint not only enhances the appearance of steel round bars but also protects them from moisture and oxidation. It is commonly used for decorative purposes or when a specific color is desired. 3. Powder coating: Dry powder is applied to the steel round bars and then cured under heat, resulting in a durable and appealing finish. This treatment provides excellent resistance to impact, chemicals, and UV rays. 4. Electropolishing: A smooth and shiny finish is achieved by using an electric current and an electrolyte solution to remove a thin layer from the steel round bars' surface. It enhances the appearance and corrosion resistance, making it suitable for applications requiring cleanliness and aesthetics. 5. Passivation: An acid solution is used to remove any free iron or iron oxide from the surface of steel round bars, improving their corrosion resistance. This treatment is commonly used for stainless steel round bars to increase longevity and prevent staining or rusting. 6. Shot blasting: Small steel balls or particles are propelled at high velocity onto the steel round bars, removing contaminants, scale, or rust. This results in a clean and roughened surface, improving adhesion for subsequent coatings or treatments. 7. Chrome plating: A thin layer of chromium is electroplated onto the surface of steel round bars, providing corrosion resistance, wear resistance, and a shiny appearance. This treatment is suitable for applications requiring durability and aesthetics. The choice of surface treatment for steel round bars depends on specific requirements such as corrosion resistance, aesthetics, or wear resistance. Before selecting a treatment, it is important to carefully consider the intended use and environmental conditions.

Q: What are the different bending methods for steel round bars?: There are several bending methods for steel round bars, including hot bending, cold bending, and induction bending. Hot bending involves heating the steel bar to a high temperature and then bending it into the desired shape. Cold bending, on the other hand, is done at room temperature and involves applying force to the bar to achieve the desired bend. Induction bending uses heat generated by electromagnetic induction to soften the steel and then applies force to bend it.

Q: What are the different types of steel round bars used in the manufacturing of cutting tools?: There are several different types of steel round bars that are commonly used in the manufacturing of cutting tools. Some of the most commonly used types include: 1. High-Speed Steel (HSS): This type of steel is known for its excellent hardness, wear resistance, and ability to retain its cutting edge at high temperatures. HSS round bars are often used in the manufacturing of drills, end mills, and other cutting tools that are used for metalworking and high-speed applications. 2. Tool Steel: Tool steel round bars are widely used in the production of cutting tools due to their high strength, toughness, and resistance to wear and deformation. Different grades of tool steel, such as D2, A2, and O1, are chosen based on the specific application and requirements of the cutting tool. 3. Carbon Steel: Carbon steel round bars are commonly used in the manufacturing of cutting tools that are designed for softer materials, such as wood and plastics. Carbon steel offers good hardness and durability, making it suitable for a wide range of cutting applications. 4. Stainless Steel: Stainless steel round bars are often used in the manufacturing of cutting tools that require high corrosion resistance and strength. Stainless steel offers good durability, toughness, and edge retention, making it a popular choice for cutting tools used in the food industry, medical field, and other applications where cleanliness and hygiene are important. 5. Alloy Steel: Alloy steel round bars are made by adding various alloying elements, such as chromium, molybdenum, and vanadium, to improve the properties of the steel. Alloy steel offers enhanced hardness, strength, and wear resistance, making it suitable for cutting tools used in demanding applications, such as machining hardened materials and high-temperature cutting. It is important to choose the appropriate type of steel round bar based on the specific requirements of the cutting tool, including the material being cut, the desired cutting speed, and the expected operating conditions.

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