Hot Rolled Round Steel Bars C45 System 1

Hot Rolled Round Steel Bars C45 System 2

Hot Rolled Round Steel Bars C45 System 3

Hot Rolled Round Steel Bars C45 System 4

Hot Rolled Round Steel Bars C45

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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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C	Si	Mn	P	S	Cr	Ni	Cu	Al
0.4~0.5	0.2~0.3	0.6~0.7	≤0.016	≤0.008	≤0.023	≤0.014	0.018	≤0.005

GB	DIN	JIS	AISI
45#	1.1191	S45C	1045

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 for making bearings?: No, steel round bars cannot be used for making bearings. Bearings require materials with specific properties such as hardness, smoothness, and low friction, which are not typically found in steel round bars. Bearing materials like stainless steel, ceramics, or specialized alloys are used instead.

Q:How do steel round bars perform under fatigue loading?: High-quality steel round bars generally exhibit excellent performance when subjected to fatigue loading. Fatigue loading refers to the repetitive application of stress or strain on a material, which can eventually cause failure. The outstanding fatigue strength of steel round bars is well-known. This refers to their ability to withstand cyclic loading without developing cracks or failures. This exceptional fatigue strength can be attributed to the inherent properties of steel, including its high strength, ductility, and toughness. During fatigue loading, steel round bars undergo cyclic stress, resulting in alternating tension and compression. Nonetheless, steel possesses a relatively high endurance limit, also known as the fatigue strength coefficient. This limit determines the maximum stress level that the material can endure without failure, even under cyclic loading. Moreover, steel round bars demonstrate commendable resistance to fatigue crack propagation. In the event that a crack does initiate due to cyclic loading, it is less likely to propagate or grow rapidly in comparison to other materials. This can be attributed to the material's ability to absorb energy and redistribute stress, thus impeding crack growth and preventing failure. Nevertheless, it is essential to consider that the performance of steel round bars under fatigue loading can be influenced by various factors. These factors include the specific type and grade of steel utilized, the manufacturing process, surface conditions, and the applied stress or strain levels. Therefore, it is crucial to adhere to industry standards and guidelines when designing and implementing steel round bars to ensure optimal performance and safety under fatigue loading.

Q:Are steel round bars suitable for welding applications?: Yes, steel round bars are suitable for welding applications. Steel is a commonly used material in welding due to its high strength and durability. Round bars have a consistent shape and provide good stability and support during the welding process. They can be easily welded using various methods such as MIG, TIG, or stick welding, making them ideal for a wide range of welding applications in industries like construction, manufacturing, and automotive.

Q:What are the standard sizes of steel round bars?: The standard sizes of steel round bars vary depending on the country and the specific industry standards. In general, steel round bars are available in a wide range of diameters, typically ranging from 6mm (0.24 inches) to 400mm (15.75 inches) or even larger. Commonly used sizes for commercial applications include 10mm (0.39 inches), 12mm (0.47 inches), 16mm (0.63 inches), 20mm (0.79 inches), 25mm (0.98 inches), and 32mm (1.26 inches). However, it is important to note that these sizes may differ in different regions and industries, and specialized applications may require unique dimensions. It is always recommended to consult the relevant industry standards or consult with suppliers to determine the specific standard sizes for steel round bars in a particular context.

Q:Can steel round bars be used for making cooling system components?: Certainly, cooling system components can be fabricated using steel round bars. Steel, being a versatile and resilient material, possesses the capability to endure elevated temperatures and pressures, rendering it ideal for cooling system applications. Steel round bars can be precisely shaped and dimensioned to meet the varying requirements of distinct cooling system components such as pipes, fittings, valves, and heat exchangers. Furthermore, steel exhibits exceptional thermal conductivity, enabling efficient heat transfer within cooling systems. However, it is vital to meticulously consider the specific demands of the cooling system and seek advice from engineers or professionals to ascertain the appropriate grade of steel and ensure compatibility with other system components.

Q:Can steel round bars be used for making interior components?: Yes, steel round bars can be used for making interior components. They are often used in various applications such as handrails, furniture, fixtures, and decorative elements due to their strength, durability, and versatility.

Q:Which is hard, round steel or screw steel?: Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of them: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. They are more than 25 millimeters of round steel. They are mainly used in the manufacture of mechanical parts or seamless steel tube billets

Q:What are the advantages of using nickel-chromium-titanium alloy steel round bars?: Some advantages of using nickel-chromium-titanium alloy steel round bars include their high strength and durability, excellent corrosion resistance, and good heat resistance. These alloy steel round bars also offer superior wear resistance and can withstand harsh environments. Additionally, they have good machinability, making them suitable for various applications in industries such as aerospace, automotive, and oil and gas.

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.

Q:What are the different types of steel round bar surface treatments for improved wear resistance?: There are several different types of steel round bar surface treatments that can be applied to improve wear resistance. These treatments are designed to enhance the hardness, toughness, and overall durability of the steel, making it more resistant to wear and corrosion. Some of the most common surface treatments for steel round bars include: 1. Nitriding: This treatment involves exposing the steel to a nitrogen-rich environment at high temperatures. This forms a hard nitride layer on the surface, which improves wear resistance and provides enhanced hardness. 2. Carburizing: Carburizing is a process that involves introducing carbon into the surface of the steel to create a high-carbon layer. This layer increases hardness and wear resistance, making it suitable for applications that require high strength and durability. 3. Induction hardening: Induction hardening is a heat treatment process that selectively hardens the surface of the steel. This is achieved by heating the steel using an induction coil and then rapidly quenching it. The resulting hardened layer provides excellent wear resistance while maintaining the toughness of the core. 4. Shot peening: Shot peening involves bombarding the steel surface with small metal or ceramic particles at high velocity. This process creates compressive stresses on the surface, which improves fatigue life and wear resistance. 5. Thermal spraying: In thermal spraying, a coating material is melted and sprayed onto the steel surface using a flame or plasma torch. This creates a protective layer that offers enhanced wear resistance and corrosion protection. 6. PVD/CVD coatings: Physical Vapor Deposition (PVD) and Chemical Vapor Deposition (CVD) coatings involve depositing a thin layer of material onto the steel surface. These coatings provide excellent wear resistance, low friction, and improved corrosion protection. 7. Hard chrome plating: This process involves electroplating a layer of chromium onto the steel surface. Hard chrome plating offers high hardness, wear resistance, and corrosion protection. It's important to note that the choice of surface treatment depends on the specific application requirements and the type of wear resistance needed. Each treatment has its own advantages and limitations, and it is crucial to consider factors such as cost, environmental impact, and performance characteristics when selecting the most suitable treatment for a given steel round bar.

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