1045 Grade 8.8 Carbon Steel Rod Bars System 1

1045 Grade 8.8 Carbon Steel Rod Bars System 2

1045 Grade 8.8 Carbon Steel Rod Bars System 3

1045 Grade 8.8 Carbon Steel Rod Bars System 4

1045 Grade 8.8 Carbon Steel Rod Bars

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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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GB	ASTM	JIS	DIN	BS
45#	1045	S45C	C45(1.0503) CK45(1.1191	08M48

Chemical Composition (%)
C	Si	Mn	S	P	Cr	Ni
0.42-0.50	0.17-0.37	0.50-0.80	0.035	0.035	0.25	0.25
B	0.30-0.40

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: Can steel round bars be used in the production of construction materials?: Yes, steel round bars can be used in the production of construction materials. Steel round bars are commonly used in the construction industry due to their high strength and durability. They can be used to reinforce concrete structures, such as beams, columns, and slabs, providing additional strength and stability. Steel round bars can also be used in the fabrication of steel frames, trusses, and other structural components in buildings and bridges. Their versatility and ability to withstand heavy loads make them a popular choice in the construction industry.

Q: What is the maximum weight that can be lifted using a steel round bar as a lifting rod?: The maximum weight that can be lifted using a steel round bar as a lifting rod depends on several factors such as the diameter and length of the bar, the material composition and quality of the steel, and the lifting technique employed. Steel round bars have different load-bearing capacities based on their dimensions and grade. The load-bearing capacity of a steel bar can be calculated using engineering principles and formulas specific to the material and geometry of the bar. To determine the maximum weight that can be lifted with a particular steel round bar, it is necessary to consider its ultimate tensile strength (UTS), yield strength, and factor of safety. The UTS represents the maximum stress a material can withstand before failure, while the yield strength is the stress at which permanent deformation occurs. The factor of safety is a design parameter that accounts for uncertainties and ensures structural integrity. It is crucial to consult engineering references, standards, or professionals to obtain accurate and reliable information regarding the load-bearing capacity of a specific steel round bar. They can provide the necessary calculations, taking into account the diameter, length, and material properties of the bar, as well as the intended lifting application and safety requirements. In summary, the maximum weight that can be lifted using a steel round bar as a lifting rod depends on various factors and cannot be determined without considering the specific characteristics of the bar and the lifting scenario. Consulting engineering resources or experts is essential to ensure safe and accurate calculations.

Q: How are steel round bars used in the manufacturing of valves and fittings?: Steel round bars are used in the manufacturing of valves and fittings as they provide the necessary strength and durability required for these components. The round bars are first machined and shaped into various parts of the valve or fitting, such as the body, stem, or disc. The steel round bars are then further processed through cutting, drilling, and threading to create the desired shape and size. This ensures that the valves and fittings can withstand high pressure, temperature, and corrosive environments, making them suitable for industrial applications.

Q: What are the typical tolerances for steel round bars?: The typical tolerances for steel round bars can vary depending on the specific requirements of the application or industry. However, there are generally accepted standard tolerances that are commonly used. For diameter, the typical tolerances for steel round bars are usually within a few thousandths of an inch. This means that the actual diameter of the bar can deviate slightly from the specified diameter, but it will still fall within an acceptable range. In terms of straightness, steel round bars are commonly produced with a straightness tolerance that allows for some deviation from a perfectly straight line. The typical tolerance for straightness is usually measured in units of inches per foot or millimeters per meter. This means that the bar may have a slight bend or curve, but it should not exceed the specified tolerance. Surface finish is another important aspect of steel round bars. The typical tolerance for surface finish is usually specified in terms of roughness average (Ra) or surface roughness in micrometers. This tolerance ensures that the surface of the bar is smooth and free from any significant imperfections, such as pits or scratches. It is important to note that these typical tolerances can vary depending on the specific grade or type of steel being used, as well as the intended application. In some cases, tighter tolerances may be required for precision or critical applications, while looser tolerances may be acceptable for less demanding applications. Therefore, it is always recommended to consult the relevant industry standards or specifications to determine the specific tolerances required for a particular steel round bar.

Q: Can steel round bars be used for making wire?: Yes, steel round bars can be used for making wire by undergoing a process called wire drawing. In this process, the steel round bar is pulled through a series of progressively smaller dies, reducing its diameter and elongating it into wire form.

Q: Can steel round bars be used in electrical applications?: No, steel round bars are not typically used in electrical applications. Electrical conductors are typically made of materials that are good conductors of electricity, such as copper or aluminum. Steel is not as conductive as these materials and is more commonly used for structural purposes.

Q: What is the typical yield strength of a steel round bar?: The yield strength of a steel round bar can vary depending on the grade of steel used. Most common grades of steel typically have a yield strength ranging from 36,000 to 80,000 psi. It should be noted that this range is a general guideline and there may be exceptions and variations among different grades of steel. The yield strength can also be influenced by factors such as the manufacturing process and any additional treatments or heat treatments applied to the steel. Therefore, it is advisable to consult the specific material specifications or seek advice from a metallurgical expert for accurate and precise information on the yield strength of a particular steel round bar.

Q: What are the different types of steel round bar surface finishes used in the marine industry?: In the marine industry, there are several different types of steel round bar surface finishes that are commonly used. These finishes serve various purposes and have specific characteristics that make them suitable for specific applications. Here are some of the most common types of steel round bar surface finishes used in the marine industry: 1. Polished Finish: A polished finish is achieved by grinding the surface of the steel round bar to a smooth and reflective surface. This finish is commonly used in applications where aesthetics are important, as it provides a visually appealing and shiny appearance. Polished finishes are often used for decorative purposes on boat fittings, handrails, and other exposed areas. 2. Mill Finish: Mill finish refers to the surface condition of steel round bars as they come from the mill without any additional treatment. This finish is characterized by a rough and dull appearance, as it is not meant to be visually appealing. Mill finishes are typically used when a smooth or polished surface is not necessary, such as in structural applications or where the material will be painted or coated. 3. Shot Blasted Finish: Shot blasting is a surface treatment process that involves propelling small steel shots at high velocity onto the surface of the round bar. This process removes any surface impurities, scales, or rust, resulting in a clean and slightly textured finish. Shot blasted finishes are commonly used in marine applications where improved adhesion of coatings or paint is required, as the textured surface provides a better bonding surface. 4. Hot Rolled Finish: Hot rolled finish is achieved by subjecting the steel round bar to high temperatures during the manufacturing process, followed by rapid cooling. This process results in a scaly surface with a rough texture. Hot rolled finishes are suitable for marine applications where corrosion resistance is not a primary concern and where the material will be further processed or coated. 5. Galvanized Finish: Galvanizing is a process of applying a protective zinc coating to the surface of the steel round bar. This finish provides excellent corrosion resistance, making it ideal for marine applications where the material will be exposed to saltwater or harsh environmental conditions. Galvanized finishes are commonly used for boat trailers, marine hardware, and other components that require enhanced protection against corrosion. These are just a few of the different types of steel round bar surface finishes used in the marine industry. Each finish has its own unique properties and advantages, allowing for a wide range of applications in the maritime sector. The choice of finish depends on factors such as aesthetics, corrosion resistance, coating compatibility, and the specific requirements of the marine application.

Q: How are steel round bars priced?: Steel round bars are typically priced based on several factors. One of the key factors is the cost of raw materials, which includes the cost of steel billets or ingots used to produce the round bars. The price of these raw materials can fluctuate based on market conditions, such as supply and demand dynamics and changes in input costs. Another factor that influences the pricing of steel round bars is the manufacturing process involved. The cost of transforming raw materials into finished round bars includes expenses such as energy consumption, labor costs, and equipment maintenance. These costs can vary depending on the complexity of the manufacturing process and the efficiency of the production facilities. Market conditions also play a significant role in determining the pricing of steel round bars. Factors such as global economic trends, industry demand, and competition among suppliers can impact the market price. If there is high demand for steel round bars, manufacturers may be able to charge a premium price. Conversely, during periods of oversupply, prices may be lower as suppliers compete for customers. Additionally, the size, grade, and quality of the steel round bars can affect the pricing. Larger diameter bars or specialty grades that require additional processing steps or high-quality raw materials may be priced higher than standard sizes or lower-grade bars. Finally, transportation costs and logistics can also influence the pricing of steel round bars. Shipping distances, freight rates, and any additional handling fees can add to the overall cost of the product. In summary, the pricing of steel round bars is influenced by the cost of raw materials, the manufacturing process, market conditions, the size and grade of the bars, and transportation costs. Understanding these factors can help buyers and sellers negotiate fair prices for steel round bars.

Q: How do steel round bars compare to brass or copper bars?: Steel round bars, when compared to brass or copper bars, exhibit several key differences. Firstly, steel bars are known for their superior strength and durability. They have a high tensile strength and are capable of withstanding heavy loads and impacts, making them ideal for applications that require robustness and toughness. On the other hand, brass and copper bars are relatively softer and less rigid, making them more suitable for applications that prioritize malleability and electrical conductivity. Another significant difference lies in their corrosion resistance. While brass and copper bars are known for their excellent corrosion resistance, steel bars, particularly carbon steel, are more vulnerable to rusting. However, stainless steel round bars are highly resistant to corrosion due to the presence of chromium, making them a suitable alternative to brass or copper bars in environments where corrosion is a concern. In terms of cost, steel round bars are generally more economical compared to brass or copper bars. This is primarily due to the higher availability and lower production costs associated with steel. Brass and copper, being non-ferrous metals, are less abundant and require more complex extraction and refining processes, making them relatively more expensive. Furthermore, steel round bars offer a wide range of mechanical properties, such as different grades and compositions, allowing for customization based on specific application requirements. Conversely, brass and copper bars have more limited options in terms of strength and hardness variations. Overall, the choice between steel, brass, or copper round bars depends on the specific application and desired properties. Steel bars are preferred for their strength, durability, and cost-effectiveness, while brass or copper bars are favored for their malleability, electrical conductivity, and corrosion resistance.

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