Round Bar Q235 5MM-100MM Hot Rolled High Quality Q195

Round Bar Q235 5MM-100MM Hot Rolled High Quality Q195 System 1

Round Bar Q235 5MM-100MM Hot Rolled High Quality Q195 System 2

Round Bar Q235 5MM-100MM Hot Rolled High Quality Q195

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Product Description:

OKorder is offering Round Bar Q235 5MM-100MM Hot Rolled High Quality Q195 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.

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 Q235 5MM-100MM Hot Rolled High Quality Q195 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:

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: The products are invoicing on theoritical weight or on actual weight?

A3: We can do it in both manners, according to the customers' request.

Round Bar Q235 5MM-100MM Hot Rolled High Quality Q195

Q:What are the advantages of using case-hardening steel round bars?: Case-hardening steel round bars offer several benefits for various applications. To begin with, these round bars possess a toughened outer layer, known as the "case," while maintaining a softer and more malleable core. This unique combination allows for exceptional surface wear resistance, making them highly suitable for situations where the material encounters abrasive or erosive forces. Furthermore, the hardened outer layer enhances the overall strength and durability of the round bars, thereby extending their lifespan. Another advantage of case-hardening steel round bars lies in their remarkable ability to withstand heavy impact loads. The hardened outer layer acts as a protective barrier, effectively absorbing and dispersing the energy from impacts, thus preventing any deformation or breakage. This makes them particularly well-suited for applications involving substantial loads or impacts, such as in the fields of machinery or construction equipment. Moreover, case-hardening steel round bars provide enhanced resistance against fatigue. The hardened surface layer aids in distributing stresses evenly, reducing the likelihood of cracks or fractures developing during cyclic loading conditions. Consequently, they prove to be an excellent choice for applications that demand long-term durability and the ability to withstand repeated stress, such as in automotive components or gears. Additionally, these round bars demonstrate excellent machinability. The soft and malleable core allows for easy cutting, drilling, and shaping, while the hardened surface ensures the necessary wear resistance. This aspect makes them both cost-effective and efficient to work with, enabling them to be effortlessly molded into various shapes and sizes to meet specific design requirements. In conclusion, the utilization of case-hardening steel round bars offers a plethora of advantages, including outstanding wear resistance, high impact load resistance, improved fatigue resistance, and excellent machinability. These characteristics render them a versatile and dependable choice for a wide array of applications across industries such as automotive, construction, and manufacturing.

Q:What are the different testing methods for steel round bars?: There are several testing methods employed to assess the quality and performance of steel round bars. These methods include: 1. Tensile Testing: Tensile testing is conducted to determine the strength and elasticity of steel round bars. It involves applying a force to the bar until it reaches its breaking point, measuring the maximum load it can withstand before fracture occurs. This test helps to determine the ultimate tensile strength, yield strength, and elongation of the steel. 2. Hardness Testing: Hardness testing is used to assess the resistance of steel round bars to indentation or scratching. Common methods include the Rockwell, Brinell, and Vickers hardness tests. These tests provide valuable information about the material's ability to resist wear, deformation, and surface damage. 3. Charpy Impact Testing: Charpy impact testing measures the toughness and resistance to brittle fracture of steel round bars. The test involves striking a notched sample with a pendulum, measuring the energy absorbed during fracture. This test is crucial in evaluating the material's behavior under sudden impact or dynamic loading conditions. 4. Ultrasonic Testing: Ultrasonic testing utilizes high-frequency sound waves to detect internal flaws or defects in steel round bars. This non-destructive testing method can identify cracks, inclusions, or voids that may compromise the structural integrity of the material. 5. Magnetic Particle Inspection: This testing method is used to identify surface cracks or defects in steel round bars. It involves magnetizing the material and applying iron particles or magnetic ink. Any surface cracks or flaws will cause a leakage of magnetic flux, making them visible under proper lighting. 6. Visual Inspection: Visual inspection is a basic yet essential method for evaluating the quality of steel round bars. It involves examining the bar's surface for any visible defects, such as pits, scratches, or irregularities in shape or dimensions. 7. Chemical Analysis: Chemical analysis helps determine the composition of steel round bars by measuring the percentage of various elements present in the material. This information is crucial in ensuring that the steel meets the required specifications and is suitable for its intended application. Overall, a combination of these testing methods is employed to ensure the quality, performance, and reliability of steel round bars in various industries such as construction, manufacturing, and engineering.

Q:Can steel round bars be used in the power generation industry?: Yes, steel round bars can be used in the power generation industry. Steel round bars possess high strength and durability, making them suitable for various applications within the industry, such as supporting heavy machinery, constructing power plant structures, and manufacturing turbine components. Additionally, steel's resistance to corrosion and ability to withstand extreme temperatures make it an ideal material choice for the power generation industry.

Q:How do you straighten a bent steel round bar?: To straighten a bent steel round bar, you can use either a hydraulic press or a mechanical straightening machine. The process involves applying gradual pressure to the bent area until it becomes straight again. It is important to ensure even pressure distribution to avoid further damage to the bar.

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:Can steel round bars be coated for improved aesthetics?: Indeed, steel round bars have the potential to be coated for enhanced aesthetics. By applying a coating to steel round bars, their appearance can be elevated, resulting in a sleeker and more visually pleasing surface. Multiple coating alternatives, such as powder coating, electroplating, or painting, can be utilized to achieve diverse aesthetic outcomes when coating steel round bars. Moreover, these coatings offer more than just an improved appearance; they also grant additional advantages like increased resistance to corrosion and heightened durability. As a result, the practice of coating steel round bars is widely employed across various domains, including architecture, decoration, and industry, to enhance their aesthetics.

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 is the difference between a cold finished and a hot rolled steel round bar?: A cold finished steel round bar and a hot rolled steel round bar differ in their manufacturing processes and resulting properties. Cold finished steel round bars are manufactured through a cold drawing process, where the steel is pulled through a die at room temperature. This process results in a smooth, polished surface with tight dimensional tolerances. The cold drawing process also enhances the strength, hardness, and overall mechanical properties of the steel. Cold finished steel round bars are often preferred for applications where precision and a smooth surface are crucial, such as in machinery, automotive parts, and tools. On the other hand, hot rolled steel round bars are manufactured by heating the steel to a high temperature and then rolling it through a series of rollers. This process allows for the shaping and forming of the steel while it is in a pliable state. Hot rolled steel round bars have a rough, scaled surface and looser dimensional tolerances compared to cold finished bars. They also tend to have a slightly lower strength and hardness than their cold finished counterparts. Due to their more affordable cost and ease of production, hot rolled steel round bars are commonly used in construction, structural components, and general fabrication. In summary, the main differences between cold finished and hot rolled steel round bars lie in their manufacturing processes and resulting properties. Cold finished bars offer enhanced strength, precision, and a smooth surface, making them suitable for applications requiring high precision and mechanical performance. Hot rolled bars, on the other hand, have a rougher surface and looser tolerances, but their affordability and ease of production make them a popular choice for general applications.

Q:What is the typical lead time for manufacturing steel round bars?: The typical lead time for manufacturing steel round bars can vary depending on several factors, such as the quantity and size of the bars, the complexity of the manufacturing process, and the availability of raw materials. However, a general estimate for lead time could range from a few weeks to a couple of months. It is always best to consult with the specific manufacturer for an accurate timeframe.

Q:What is the difference between gcr12 round bar and Cr12 round bar? Can it be used in general?: The chromium content of the two is very different, and the range of application is different.

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