• High Quality Round Bar Q195 Q235 Hot Rolled 5-28mm System 1
  • High Quality Round Bar Q195 Q235 Hot Rolled 5-28mm System 2
  • High Quality Round Bar Q195 Q235 Hot Rolled 5-28mm System 3
High Quality Round Bar Q195 Q235 Hot Rolled 5-28mm

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

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Product Description:

OKorder is offering High Quality Round Bar Q195 Q235 Hot Rolled 5-28mmat 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 High Quality Round Bar Q195 Q235 Hot Rolled 5-28mm 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: 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.

 

Q: What are the advantages of using cobalt-alloy steel round bars?
Using cobalt-alloy steel round bars in various industries and applications offers several advantages. Firstly, this type of steel is exceptionally strong and hard, providing resistance against wear, corrosion, and high temperatures. This makes it suitable for demanding environments where other materials would quickly degrade. Secondly, cobalt-alloy steel maintains its shape and size even under extreme conditions, demonstrating excellent dimensional stability. This makes it ideal for applications that require precise tolerances and minimal deformation, such as in the aerospace and automotive industries. Moreover, cobalt-alloy steel retains its mechanical properties at elevated temperatures, showcasing excellent heat resistance. This makes it valuable in applications involving high-speed machining, cutting tools, and turbine components. Additionally, cobalt-alloy steel round bars are easily machined and fabricated, offering versatility and customization in various applications. Their high machinability and weldability make them suitable for use in manufacturing processes like forging, casting, and machining. Furthermore, cobalt-alloy steel round bars exhibit excellent fatigue resistance, ensuring long-lasting performance and durability. This makes them suitable for applications involving repetitive stress or cyclic loading, such as shafts, springs, and fasteners. Lastly, cobalt-alloy steel is biocompatible, making it suitable for medical and dental applications. Its corrosion resistance and biocompatibility properties make it commonly used in orthopedic implants, surgical tools, and dental instruments. In conclusion, the advantages of using cobalt-alloy steel round bars include exceptional strength, hardness, and dimensional stability, as well as heat resistance, machinability, fatigue resistance, and biocompatibility. These qualities make them valuable across a wide range of industries and applications, offering reliability, durability, and performance.
Q: Can steel round bars be used in the manufacturing of shafts?
Shafts can indeed be manufactured using steel round bars. The utilization of steel round bars for shaft production is common owing to their remarkable mechanical properties, durability, and high strength. The bar's circular form facilitates the machining and forming procedures, rendering it appropriate for producing shafts of diverse lengths and sizes. Moreover, heat treatment can be applied to steel round bars to augment their hardness, strength, and resistance to wear, thus enhancing their suitability for shaft applications.
Q: Can steel round bars be used in the oil and gas industry?
Yes, steel round bars can be used in the oil and gas industry. Steel round bars are commonly used in various applications within the industry, including drilling, production, and transportation of oil and gas. These bars are highly durable and offer high strength, making them suitable for withstanding the harsh and demanding conditions that are typically found in the oil and gas sector. They are used in the construction of drilling equipment, such as drill collars and drill pipes, as well as in the production of valves, pumps, and other critical components. Additionally, steel round bars are used in the fabrication of pipelines and offshore platforms, where they provide structural support and ensure the integrity of the infrastructure. Overall, steel round bars are essential materials in the oil and gas industry due to their strength, reliability, and ability to withstand the challenging environments encountered in this sector.
Q: What are the different types of carbon steel round bars?
There are several different types of carbon steel round bars available on the market. Some of the commonly used types include: 1. Mild Steel Round Bars: These are the most common type of carbon steel round bars. They have a low carbon content and are easy to weld, cut, and form. Mild steel round bars are suitable for general engineering purposes and have excellent machinability. 2. Medium Carbon Steel Round Bars: These round bars have a higher carbon content than mild steel round bars. They offer better strength and hardness, making them suitable for applications that require higher load-bearing capacity. Medium carbon steel round bars are commonly used in automotive, construction, and machinery industries. 3. High Carbon Steel Round Bars: These round bars have a higher carbon content, typically above 0.60%. They offer superior strength, hardness, and wear resistance. High carbon steel round bars are commonly used in applications that require high strength, such as springs, cutting tools, and axles. 4. Free Cutting Steel Round Bars: These round bars have added elements, such as sulfur or lead, to improve machinability. They are commonly used in applications where easy machining is required, such as in the production of bolts, screws, and fittings. 5. Alloy Steel Round Bars: These round bars contain additional alloying elements, such as chromium, nickel, or molybdenum, to enhance specific properties. Alloy steel round bars offer improved strength, hardness, corrosion resistance, and heat resistance. They are commonly used in applications that require high performance, such as in the aerospace, oil and gas, and automotive industries. It is important to consider the specific requirements of your project or application when selecting the type of carbon steel round bar to ensure optimal performance and durability.
Q: What are the advantages of using steel round bars in construction?
There are several advantages of using steel round bars in construction. Firstly, steel round bars offer exceptional strength and durability, making them ideal for supporting heavy loads and withstanding harsh weather conditions. Secondly, they are highly resistant to corrosion, ensuring long-lasting and low-maintenance structures. Additionally, steel round bars can be easily customized and shaped to fit various construction needs, allowing for flexibility in design. Lastly, steel round bars are readily available and cost-effective, making them a preferred choice for construction projects.
Q: What is the maximum silicon content allowed for steel round bars?
The maximum silicon content permitted in steel round bars may differ based on the particular grade and application of the steel. Nonetheless, in general, the majority of standard carbon and alloy steels utilized in round bars usually have a maximum silicon content ranging from 0.35% to 0.45%. Going beyond this threshold can result in adverse consequences for the mechanical properties of the steel, including diminished toughness and heightened brittleness. To ascertain the precise maximum silicon content permitted for a specific steel grade and intended use, it is crucial to refer to the applicable industry standards and specifications.
Q: What are the different surface conditions for steel round bars?
Steel round bars can have a variety of surface conditions, including hot rolled, cold drawn, peeled, polished, and turned. Each surface condition has its own unique properties and appearance, catering to different applications and requirements.
Q: What are the different types of steel round bar surface finishes for improved aesthetics?
Some common types of steel round bar surface finishes for improved aesthetics include polished, brushed, satin, and bead blasted finishes.
Q: What are the typical yield strengths of different grades of steel round bars?
The specific grade of steel can cause the yield strength of steel round bars to vary. Here are some common yield strengths for different grades of steel round bars: - Mild steel round bars usually have a yield strength of approximately 250 MPa (megapascals) or 36,000 psi (pounds per square inch). - The yield strength of carbon steel round bars can range from 350 to 550 MPa or 50,000 to 80,000 psi. - Compared to mild or carbon steel, alloy steel round bars such as 4140 or 4340 generally have higher yield strengths. The yield strength of these alloys can vary from 550 to 850 MPa or 80,000 to 120,000 psi. - Stainless steel round bars are available in different grades, and their yield strengths can vary accordingly. For instance, austenitic stainless steels like 304 or 316 usually have yield strengths ranging from 200 to 300 MPa or 29,000 to 43,000 psi. Conversely, duplex stainless steels like 2205 or 2507 can have higher yield strengths of 450 to 650 MPa or 65,000 to 95,000 psi. It is important to keep in mind that these values are typical ranges, and the actual yield strength of a specific grade of steel round bar may differ due to factors such as heat treatment, manufacturing process, and other variables. Therefore, it is always advisable to consult the manufacturer's specifications or industry standards for accurate and precise yield strength values of steel round bars.
Q: How do you calculate the bending stress in a steel round bar?
In order to determine the bending stress in a steel round bar, one must take into account the applied load and the properties of the bar. The bending stress is a measurement of the internal forces that arise within the bar when it is subjected to an external load that causes it to bend. The bending stress can be calculated using the following formula: σ = (M * c) / I In this equation: - σ denotes the bending stress, measured in units of force per unit area (such as pascals or psi) - M represents the bending moment, which is the result of multiplying the applied load by the distance from the bar's neutral axis to the point of interest. It is typically expressed in units of force multiplied by distance (e.g., N·m or lb·ft). - c signifies the distance from the neutral axis to the outermost fiber of the bar. It is also referred to as the distance to the extreme fiber or the radius of the bar. - I symbolizes the moment of inertia, which portrays the bar's resistance to bending. It is a property that relies on the shape and dimensions of the bar's cross-section. To calculate the moment of inertia for a round bar, the formula is as follows: I = (π * d^4) / 64 In this equation: - I denotes the moment of inertia - π represents a mathematical constant (approximately 3.14159) - d signifies the diameter of the round bar Once the bending stress has been determined using the aforementioned formulas, it can be compared to the yield strength of the steel material to evaluate the safety factor and ascertain whether the bar will experience permanent deformation or failure.

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