Carbon Steel Rod Bar AISI 1050

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Material	C	Si	Mn	S/P	B
20#	0.17-0.23	0.17-0.37	0.35-0.65	0.035(max)	0.0008-0.003
25#	0.22-0.29	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
30#	0.27-0.34	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
35#	0.32-0.39	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
40#	0.37-0.44	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
45#	0.42-0.48	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
50#	0.47-0.55	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
55#	0.52-0.60	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
60#	0.57-0.65	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003

GB	20#	30#	35#	40#	45#	50#	55#	60#
JIS	S20C	S30C	S35C	S40C	S45C	S50C	S55C	S60C
ASTM	1020	1030	1035	1040	1045	1050	1055	1060
								C60
DIN	C22	C30	C35	C40	C45/CK45	C50	C55

Product Name	Typical Grades	Diameter(mm)	Standard adopted
Carbon Steel	20 (1020/S20C/C22)	Ø16-Ø300	GB/SAE/JIS/DIN
40 (1040/S40C/C40)
45 (1045/S45C/C45)
Bearing Steel	GCr9 (51100/SUJ1)	Ø12-Ø250
GCr15 (52100/SUJ2/100Gr6)
GCr9SiMn (A485-Gr.1/SUJ3)
Cr-Mo Steel	20Cr (5120/SCr420H/20Cr4)	Ø12-Ø250
40Cr (5140/SCr440/41Cr4)
42CrMo(4140/SCM440/42CrMo4)
Gear Steel	20CrNiMo	Ø16-Ø600
20CrMn(5115/SMnC420/20MnCr5)
20CrNiMo(8620/SNCM220/20CrMiMo2)

Carbon Steel	Mold bottom, Plastic mold, Construction machinery parts Automobile parts, Security grills, Screens, Construction
Bearing Steel	Aerospace, Navigation, Nuclear energy, Chemical industry Electronic information, Petrochemical, Instrument and meter Transportation
Cr-Mo Steel	Mechanism & Fasteners gear, Stressed components for vehicles Engines and machines, Parts of larger cross-section
Gear Steel	All kinds of gears, Statically and dynamically stressed component for vehicles Engines and machine, Larger cross-section parts, Crankshafts

Company Information

CNBM International Corporation is the most important trading platform of CNBM group.

Whith its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high qulity series of refractories as well as technical consultancies and logistics solutions.

FAQ

1, Your advantages?

professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposale

2, Test & Certificate?

SGS test is available, customer inspection before shipping is welcome, third party inspection is no problem

3, Factory or Trading Company?

CNBM is a trading company but we have so many protocol factories and CNBM works as a trading department of these factories. Also CNBM is the holding company of many factories.

4, Payment Terms?

30% TT as deposit and 70% before delivery.

Irrevocable L/C at sight.

5, Trading Terms?

EXW, FOB, CIF, FFR, CNF

6, After-sale Service?

CNBM provides the services and support you need for every step of our cooperation. We're the business partner you can trust.

For any problem, please kindly contact us at any your convenient time.

We'll reply you in our first priority within 24 hours.

Packaging & Delivery

1, Packaging: seaworthy package or as required

2, Delivery: 35-45 days or based on quantity

Q: How do you measure the straightness of a steel round bar?: There exist several methods for measuring the straightness of a steel round bar. One commonly employed approach involves using a straight edge or ruler, which is positioned along the length of the bar to check for any gaps or deviations. If the bar is completely straight, it should make contact with the straight edge throughout its entire length. Any gaps or deviations indicate that the bar is not perfectly straight. Another method involves the utilization of a laser alignment system. This method entails placing the round bar on a flat surface and projecting a line along its length using a laser. The projected line will reveal any deviations or bends in the bar. This method provides a more precise measurement of straightness. Moreover, a dial indicator, a precision measuring instrument, can also be employed. This device includes a small probe that is placed against the surface of the round bar. As the bar is rotated, the dial indicator will measure any variations in the surface, thereby indicating any bends or deviations from straightness. It is worth noting that the required level of straightness will vary depending on the specific application of the steel round bar. In certain cases, a slight deviation may be acceptable, while in others, a high level of straightness may be imperative.

Q: What is the difference between a centerless ground and a rough turned steel round bar?: The manufacturing processes and resulting surface finishes of a centerless ground steel round bar and a rough turned steel round bar differ. To produce a centerless ground steel round bar, the bar is fed through a grinding machine. This machine removes material from the surface, achieving precise diameter and roundness tolerances. The bar is rotated between two grinding wheels, while pressure is applied to remove imperfections and create a smooth, polished surface. The end result is a highly accurate and consistent diameter, with a mirror-like finish. This makes it suitable for applications that require tight tolerances and a polished appearance. On the other hand, a rough turned steel round bar is manufactured using a different machining process called turning. In this process, the bar is rotated against a cutting tool, which removes material from the surface to achieve the desired diameter and shape. However, turning does not provide the same level of precision and surface finish as centerless grinding. The resulting surface of a rough turned bar will have visible tool marks and a rougher texture compared to a centerless ground bar. In conclusion, the main distinction between a centerless ground steel round bar and a rough turned steel round bar lies in their manufacturing processes and resulting surface finishes. Centerless grinding offers a more precise diameter, roundness, and smoother surface finish, making it ideal for applications that require tight tolerances and a polished appearance. Rough turning, while less precise and with a rougher surface finish, is still suitable for applications that do not require the same level of precision or aesthetic appeal.

Q: What are the advantages of using titanium-alloy steel round bars?: There are several advantages of using titanium-alloy steel round bars: 1. High strength: Titanium-alloy steel round bars have exceptional strength-to-weight ratio, making them ideal for applications where strength is crucial. Their high tensile strength allows them to withstand heavy loads and resist deformation. 2. Corrosion resistance: Titanium-alloy steel round bars exhibit excellent corrosion resistance, even in highly corrosive environments. This property makes them suitable for marine, aerospace, and chemical industries, where exposure to saltwater or chemicals is common. 3. Lightweight: Compared to other metal alloys, titanium-alloy steel round bars are relatively lightweight. This characteristic makes them advantageous in applications where weight reduction is important, such as in aerospace and automotive industries, as it allows for better fuel efficiency and increased payload capacity. 4. High temperature resistance: Titanium-alloy steel round bars can withstand high temperatures without losing their structural integrity. This property makes them suitable for applications in high-temperature environments, such as in power generation and oil and gas industries. 5. Biocompatibility: Titanium is a biocompatible material, meaning it is well-tolerated by the human body and does not cause adverse reactions. This makes titanium-alloy steel round bars suitable for medical implants, such as orthopedic implants and dental fixtures, where biocompatibility is critical. 6. Excellent fatigue resistance: Titanium-alloy steel round bars have exceptional fatigue resistance, which means they can withstand repeated loading and unloading without experiencing fatigue failure. This property makes them suitable for applications that require long-term durability and reliability, such as in structural components and machinery. Overall, the advantages of using titanium-alloy steel round bars lie in their high strength, corrosion resistance, lightweight nature, high temperature resistance, biocompatibility, and excellent fatigue resistance. These properties make them a versatile choice for various industries, ranging from aerospace and automotive to medical and petrochemical sectors.

Q: How are steel round bars tested for tensile strength?: Steel round bars are tested for tensile strength through a process called tensile testing. This involves pulling the bar until it breaks, while measuring the amount of force applied. The results are then used to determine the maximum load the bar can withstand before fracturing, providing an indication of its tensile strength.

Q: What are the different grades of alloy steel round bars?: There are several different grades of alloy steel round bars, including but not limited to, 4140, 4340, 8620, and 52100. Each grade offers specific properties and characteristics that make them suitable for different applications and industries.

Q: What is the difference between a smooth and a deformed steel round bar?: A smooth steel round bar refers to a bar that has a consistently even surface without any visible imperfections or deformities. It is typically manufactured through a process called hot rolling, where a steel billet is heated and passed through a series of rolling mills to achieve the desired shape and surface finish. Smooth steel round bars are commonly used in applications where aesthetics and surface quality are important, such as architectural designs or decorative metalwork. On the other hand, a deformed steel round bar has intentional deformations or patterns on its surface. These deformations can take various forms, including ridges, ribs, or indentations. The purpose of adding deformations to the surface of a steel round bar is to enhance its bonding ability with concrete or other materials. The irregular surface of a deformed bar provides increased friction and better adhesion, improving the structural integrity of reinforced concrete structures. Deformed steel round bars are primarily used in construction projects, particularly in reinforced concrete structures like columns, beams, and slabs. The deformations on the surface of the bar help to prevent slippage between the steel and concrete, ensuring a stronger bond and improving the overall stability and durability of the structure. In summary, the main difference between a smooth and a deformed steel round bar lies in their surface characteristics and intended applications. Smooth bars have a uniform and smooth surface, ideal for applications where aesthetics and surface quality are important. Deformed bars, on the other hand, have intentional deformations to enhance bonding with concrete, making them suitable for construction projects requiring reinforced concrete structures.

Q: Can steel round bars be used in the construction of buildings?: Yes, steel round bars can be used in the construction of buildings. Steel round bars are commonly used as reinforcement in concrete structures, such as columns, beams, and slabs. They provide additional strength and stability to the building, making it more resistant to structural loads and forces. The round shape of the bars allows for easy bending and shaping, making them versatile and suitable for various construction applications. Additionally, steel round bars are known for their high tensile strength, durability, and corrosion resistance, making them an ideal choice for long-lasting and reliable building construction.

Q: What are the disadvantages of using steel round bars?: There are a few disadvantages associated with using steel round bars. Firstly, steel round bars can be quite heavy, making them difficult to handle and transport. Secondly, steel round bars can corrode if not properly protected, which can lead to structural weakness and reduced lifespan. Additionally, steel round bars may not be suitable for certain applications that require lightweight or non-magnetic materials. Lastly, steel round bars can be more expensive compared to other materials, which may impact the overall project cost.

Q: What are the advantages of using nickel-iron alloy steel round bars?: Nickel-iron alloy steel round bars offer numerous benefits. Firstly, they possess outstanding resistance to corrosion and oxidation, making them highly suitable for environments with moisture, chemicals, or high temperatures. This ensures their structural integrity and durability, reducing the need for frequent replacements or repairs. Secondly, these round bars exhibit excellent mechanical properties, including high strength, toughness, and hardness. This makes them ideal for heavy-duty applications in industries such as construction, manufacturing, and engineering. Additionally, nickel-iron alloy steel maintains its shape and dimensions even at extreme temperatures, thanks to its good thermal stability and resistance to thermal expansion. This reliability makes it perfect for high-temperature applications. Moreover, these round bars have remarkable magnetic properties, with high magnetic permeability. This makes them suitable for electromagnetic applications like transformers, inductors, and magnetic shielding, enhancing the efficiency of these devices. Lastly, nickel-iron alloy steel offers versatility in manufacturing processes and customization options. It can be easily machined, welded, and formed into various shapes and sizes, providing flexibility in design and application. This adaptability makes it a preferred choice in many industries. In conclusion, the benefits of using nickel-iron alloy steel round bars are evident in their corrosion resistance, mechanical properties, thermal stability, magnetic properties, and versatility. These qualities ensure optimal performance and longevity, making them reliable and suitable for a wide range of applications.

Q: What is the difference between a hot-rolled and a cold-drawn steel round bar?: The main difference between a hot-rolled and a cold-drawn steel round bar lies in the manufacturing process and the resulting properties of the finished product. Hot-rolled steel round bars are produced by heating a billet or ingot at a high temperature, typically around 1100 to 1300 degrees Celsius, and then rolling it into the desired shape and size. This process results in a rougher surface finish and larger tolerances compared to cold-drawn bars. Hot-rolled bars are generally less precise in dimensions and may have some surface defects such as scale or rust. On the other hand, cold-drawn steel round bars are manufactured by pulling a hot-rolled bar through a die at room temperature. This process reduces the diameter and enhances the surface finish of the bar, resulting in a smoother and more precise product. Cold-drawing also improves the mechanical properties of the steel, such as increased strength, hardness, and improved surface quality. The cold-drawing process also provides closer dimensional tolerances, making cold-drawn bars suitable for applications that require higher precision. In summary, the difference between a hot-rolled and a cold-drawn steel round bar lies in the manufacturing process, resulting in different surface finish, dimensional tolerances, and mechanical properties. Hot-rolled bars are produced at high temperatures, have a rougher surface, and larger tolerances, while cold-drawn bars are manufactured at room temperature, have a smoother surface, closer dimensional tolerances, and enhanced mechanical properties. The choice between the two depends on specific application requirements and the desired characteristics of the finished product.

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