mild steel round bar
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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:Can steel round bars be used in the production of HVAC equipment?
- Yes, steel round bars can definitely be used in the production of HVAC (Heating, Ventilation, and Air Conditioning) equipment. Steel round bars are widely utilized in the manufacturing of various HVAC components such as air ducts, frames, supports, brackets, and other structural elements. Steel is a popular choice in HVAC equipment due to its excellent strength, durability, and resistance to corrosion. Its high tensile strength makes it suitable for handling the mechanical stresses and loads experienced by HVAC systems. Additionally, steel can withstand high temperatures and is non-combustible, making it a safe material for HVAC applications. Overall, steel round bars are widely utilized in the production of HVAC equipment for their reliability, longevity, and performance.
- Q:How are steel round bars tested for quality?
- Steel round bars are tested for quality through various methods such as visual inspection, dimensional checks, surface defects detection, mechanical testing, and chemical analysis. These tests ensure that the steel bars meet the required standards for strength, durability, and composition, ensuring their suitability for specific applications.
- Q:What are the different surface treatments available for alloy steel round bars?
- Alloy steel round bars can be subjected to various surface treatments to meet specific requirements. Some commonly used treatments include: 1. Hot-dip galvanizing: Steel bars are immersed in molten zinc, creating a protective coating that prevents rust and corrosion. 2. Electrogalvanizing: Zinc is applied to the surface of the bars using an electric current, providing a layer of protection. 3. Nitriding: Steel bars are exposed to a nitrogen-rich environment at high temperatures, resulting in a durable, wear-resistant layer that enhances strength and durability. 4. Chrome plating: A thin layer of chromium is applied to the bars, offering excellent corrosion resistance and improving the bars' aesthetic appearance. 5. Powder coating: Dry powder is applied to the bars and then cured through heating, creating a durable finish that protects against corrosion, chemicals, and UV rays. 6. Polishing: The surface of the bars is mechanically smoothed and polished, enhancing visual appeal and improving corrosion resistance. These treatments are just a few examples of the many available options for alloy steel round bars. The choice of treatment depends on specific application requirements, such as desired appearance, corrosion resistance, and wear resistance.
- Q:Can steel round bars be used for making tools?
- Yes, steel round bars can be used for making tools. Steel is a commonly used material in tool manufacturing due to its high strength, durability, and resistance to wear and tear. Round bars provide a solid and versatile form that can be machined and shaped into various tool types, such as wrenches, hammers, chisels, and punches.
- Q:What are the typical tolerances for steel round bars?
- The typical tolerances for steel round bars can vary depending on the specific grade and size of the bar. However, common industry standards typically specify tolerances in terms of diameter deviation, straightness, and length. For diameter, tolerances can range from +/- 0.005 to +/- 0.25 inches, again depending on the bar size. Straightness tolerances are often specified as a maximum deviation per foot or meter, such as 0.010 inches per foot. Length tolerances can range from +/- 0.125 to +/- 1 inch. It's important to consult the appropriate industry standards or supplier specifications for precise tolerances based on the specific requirements of the project or application.
- Q:Can steel round bars be threaded or machined?
- Yes, steel round bars can be threaded or machined. Threading refers to the process of creating internal or external threads on the surface of a steel round bar, allowing it to be connected or fastened to other components. Machining, on the other hand, involves using various cutting tools and techniques to remove material from the steel round bar, shaping it into a desired form or size. Both threading and machining can be performed on steel round bars to meet specific requirements and applications, such as creating threaded rods, bolts, or custom-designed components.
- Q:Can steel round bars be used in the hydraulic industry?
- Certainly, the hydraulic industry can make use of steel round bars. Renowned for their robustness, endurance, and immunity to corrosion, steel round bars prove to be ideal for a wide range of applications within the hydraulic industry. They find utility in the production of hydraulic cylinders, pistons, and other components necessitating exceptional tensile strength and dependability. Moreover, steel round bars can be conveniently machined and fashioned into diverse dimensions and specifications, ensuring they align with the precise requirements of hydraulic systems. In essence, owing to their exceptional mechanical characteristics and adaptability, steel round bars remain a favored choice in the hydraulic industry.
- Q:What is the tensile strength of steel round bars?
- The tensile strength of steel round bars varies depending on the specific grade or type of steel used. On average, steel round bars possess a tensile strength ranging from 400 to 500 megapascals (MPa). This implies that steel round bars can endure a pulling or stretching force of 400 to 500 MPa before undergoing permanent deformation or fracturing. It is worth mentioning that varying grades of steel, such as mild steel, carbon steel, or alloy steel, may exhibit different tensile strength values. Moreover, factors like heat treatment, manufacturing process, and round bar size can also impact its tensile strength. Therefore, it is advisable to seek accurate and precise information regarding the tensile strength of a particular steel round bar from the specific manufacturer or supplier.
- Q:Can steel round bars be used for making suspension components?
- Yes, steel round bars can be used for making suspension components. Steel round bars are often utilized in the manufacturing of suspension components due to their excellent strength, durability, and resistance to fatigue. They provide the necessary support and stability required for suspension systems to function effectively.
- Q:Why is round steel more expensive than thread steel?
- Round steel has a wide range of applications, many brands and different uses. Such as machining, shipbuilding and other user processing requirements are also different. Such as alloy round steel, Q345B, high carbon steel, 45#, 35#, general round Q235B, mainly material, ingredients, etc..
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mild steel round bar
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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