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. They are often used as reinforcement in concrete structures, such as beams, columns, and foundations. The high strength and durability of steel make it an ideal choice for construction applications.

Q: What are the chemical composition requirements for steel round bars?: Steel round bars can have different chemical composition requirements depending on the specific grade or type of steel. Generally, carbon steel, alloy steel, and stainless steel are commonly used for making these bars. Carbon steel round bars consist mainly of iron and carbon, with small amounts of other elements like manganese, phosphorus, sulfur, and silicon. The carbon content can range from 0.08% to 2.1%, depending on the desired strength and hardness. These bars find widespread use in construction, manufacturing, and general-purpose applications. Alloy steel round bars contain additional alloying elements such as chromium, nickel, molybdenum, vanadium, and manganese. These elements are added to improve the mechanical properties of the steel, including strength, hardness, and resistance to wear and corrosion. The specific chemical composition requirements for alloy steel round bars can vary significantly depending on the desired properties and the specific alloy used. Stainless steel round bars are primarily composed of iron, chromium, and nickel, with smaller amounts of other elements like carbon, manganese, and molybdenum. The high chromium content provides excellent corrosion resistance, while the nickel content enhances strength and ductility. The chemical composition requirements for stainless steel round bars are typically specified by international standards such as ASTM or EN, which define the minimum and maximum allowable percentages of each element. In conclusion, the chemical composition requirements for steel round bars depend on the specific grade or type of steel being used, with carbon steel, alloy steel, and stainless steel being the most common types. The composition of these bars is carefully controlled to achieve the desired mechanical properties and performance characteristics for various applications.

Q: Can steel round bars be used in the agricultural machinery industry?: Indeed, the agricultural machinery industry can employ steel round bars. Renowned for their robustness, endurance, and adaptability, steel round bars prove suitable for diverse applications, including agricultural machinery. These bars facilitate the fabrication of essential components such as shafts, axles, gears, and connecting rods, crucial for agricultural machinery. The steel's exceptional strength ensures the durability of these components, enabling them to endure the arduous conditions and heavy loads frequently encountered in agricultural operations. Furthermore, steel round bars lend themselves effortlessly to machining and welding, enabling customization and efficient production of agricultural machinery parts. Consequently, steel round bars emerge as a dependable and cost-effective choice for the agricultural machinery industry.

Q: Are steel round bars prone to fatigue failure?: Yes, steel round bars are generally prone to fatigue failure due to cyclic loading and repeated stress, especially when exposed to high loads or stress concentrations. However, factors such as material quality, design, and proper maintenance can help mitigate the risk of fatigue failure.

Q: What are the different types of steel round bar surface treatments used in the aerospace industry?: In the aerospace industry, there are several types of steel round bar surface treatments that are commonly used to enhance the performance and durability of the materials. These treatments are specifically designed to meet the stringent requirements and standards set by the industry. Some of the different types of steel round bar surface treatments used in the aerospace industry include: 1. Passivation: This treatment involves the removal of iron particles and other contaminants from the surface of the steel round bar. It helps to prevent corrosion and improves the overall corrosion resistance properties of the material. 2. Shot Peening: Shot peening is a process that involves bombarding the surface of the steel round bar with small metallic shots. This treatment induces compressive stress on the surface, which enhances the material's fatigue strength and resistance to stress corrosion cracking. 3. Electroplating: Electroplating is a common surface treatment used in the aerospace industry. It involves the deposition of a layer of metallic coating onto the steel round bar through an electrochemical process. This treatment enhances the material's corrosion resistance, wear resistance, and aesthetic appearance. 4. Anodizing: Anodizing is an electrolytic passivation process that is commonly used on aluminum alloys. However, it can also be used on steel round bars. This treatment forms a thick, durable, and corrosion-resistant layer of oxide on the surface, which improves the material's resistance to wear, corrosion, and scratching. 5. Nitriding: Nitriding is a surface hardening treatment that involves the diffusion of nitrogen into the surface of the steel round bar. This treatment improves the material's surface hardness, wear resistance, and fatigue strength. 6. Chemical Conversion Coating: Chemical conversion coating is a treatment that involves the formation of a thin, protective layer on the surface of the steel round bar. This coating enhances the material's corrosion resistance and provides a good base for subsequent paint or coating applications. These are just a few examples of the different types of steel round bar surface treatments used in the aerospace industry. Each treatment offers unique benefits and is selected based on the specific requirements of the application, such as corrosion resistance, wear resistance, fatigue strength, and aesthetic appearance.

Q: What is the maximum chromium content allowed for steel round bars?: The maximum chromium content allowed for steel round bars typically depends on the specific grade or specification being used. However, in general, stainless steel round bars often have a maximum chromium content of around 20-30%, while for carbon or alloy steels, the chromium content is usually lower, typically less than 2%.

Q: What are the considerations for selecting the right steel grade for a round bar?: When selecting the right steel grade for a round bar, there are several considerations to take into account. Firstly, the intended application of the round bar must be evaluated, as different steel grades offer varying levels of strength, hardness, and corrosion resistance. Additionally, factors such as the desired machinability, weldability, and heat treatability should be considered. Furthermore, the environmental conditions in which the round bar will be used, such as temperature and exposure to chemicals, play a crucial role in determining the appropriate steel grade. Lastly, budget constraints and availability of the steel grade should also be taken into consideration. Overall, a thorough analysis of the application requirements and an understanding of the properties of different steel grades are key considerations in selecting the right steel grade for a round bar.

Q: Can steel round bars be hardened?: Yes, steel round bars can be hardened. Hardening is a process in which the steel is heated to a specific temperature and then rapidly cooled, commonly known as quenching. This rapid cooling causes the steel to undergo a transformation, resulting in increased hardness and strength. The hardening process is typically followed by tempering, which involves reheating the hardened steel to a lower temperature to reduce its brittleness and further enhance its toughness. Hardening is commonly used in the manufacturing of tools, machine parts, and other applications where high strength and durability are required.

Q: Are steel round bars suitable for use in the oil and gas industry?: Steel round bars are well-suited for the oil and gas industry due to their strength, durability, and high resistance to corrosion. They can withstand the challenging and harsh environments encountered in this industry, making them reliable for critical components such as drilling tools, valves, pipelines, and offshore structures. In the oil and gas industry, extreme temperatures, pressures, and corrosive substances are present in offshore rigs, refining facilities, and pipelines. Steel round bars can withstand these conditions and maintain their structural integrity, making them a reliable choice for critical components. Steel round bars also offer versatility as they can be easily machined, welded, and fabricated into different shapes and sizes. This flexibility is crucial in the oil and gas industry, which often requires unique and complex equipment. Moreover, steel round bars possess excellent mechanical properties such as high tensile strength and impact resistance. These properties are essential for withstanding heavy loads and dynamic forces associated with oil and gas operations, ensuring the safety and reliability of equipment and structures. Additionally, steel round bars have a high resistance to corrosion, which is vital in the oil and gas industry due to the presence of corrosive substances like hydrogen sulfide and saltwater. This corrosion resistance ensures the longevity and reliability of equipment, reducing maintenance costs and downtime. In conclusion, steel round bars are a suitable choice for the oil and gas industry due to their strength, durability, corrosion resistance, and versatility. They are ideal for various applications, ensuring the safe and efficient operation of equipment and structures in this demanding industry.

Q: How do you calculate the weight of a steel round bar based on its density and dimensions?: To calculate the weight of a steel round bar, you need to multiply its density by its volume. The volume of a round bar can be calculated using the formula V = πr^2h, where r is the radius and h is the height. Once you have the volume, simply multiply it by the density of the steel to get the weight.

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