Hot Rolled Round Steel C45 Bars System 1

Hot Rolled Round Steel C45 Bars System 2

Hot Rolled Round Steel C45 Bars System 3

Hot Rolled Round Steel C45 Bars System 4

Hot Rolled Round Steel C45 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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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: Are steel round bars prone to deformation?: Yes, steel round bars can be prone to deformation under certain conditions. Factors such as excessive heat, extreme pressure, or improper handling can cause steel round bars to bend, warp, or twist. However, when manufactured and used properly, steel round bars are highly durable and resistant to deformation.

Q: Are steel round bars suitable for welding applications?: Steel round bars are a great choice for welding. They are commonly used in welding applications because they are strong and durable. You can easily weld them to other steel components or structures using different welding processes like arc welding, MIG welding, or TIG welding. Steel round bars also have good mechanical properties, including excellent tensile strength. This makes them suitable for welding applications where strength and load-bearing capacity are important. They come in various sizes and grades, so you can use them for different welding projects. However, it's important to choose the right type of steel round bar for your specific welding application and desired final product properties.

Q: Can steel round bars be galvanized?: Yes, steel round bars can be galvanized. Galvanizing is a process in which a protective zinc coating is applied to the surface of steel to prevent corrosion. This process can be applied to various steel products, including round bars. Galvanizing steel round bars not only enhances their resistance to corrosion but also improves their durability and longevity. The galvanizing process involves immersing the round bars in a bath of molten zinc, which adheres to the steel and forms a protective layer. This layer acts as a barrier, shielding the steel from moisture, chemicals, and other corrosive elements. As a result, galvanized steel round bars are commonly used in outdoor applications, such as construction, fencing, and marine environments, where they are exposed to harsh conditions.

Q: How do you prevent steel round bars from rusting during transportation?: To prevent steel round bars from rusting during transportation, you can apply a protective coating such as oil or rust inhibitors on the surface of the bars. Additionally, storing them in a dry and moisture-free environment, using moisture-absorbing materials or desiccants, and covering them with waterproof wrapping can also help prevent rusting.

Q: What is the maximum hardness achievable for steel round bars?: The maximum hardness achievable for steel round bars depends on various factors such as the composition of the steel, the heat treatment process, and the desired properties for the specific application. Generally, steel can achieve a maximum hardness of around 65 HRC (Rockwell Hardness Scale C) or higher. This level of hardness is typically obtained through processes like quenching and tempering. Quenching involves rapidly cooling the steel from a high temperature to room temperature, which results in a hardened structure. Tempering is then performed to reduce the brittleness and improve the toughness of the steel while maintaining a high level of hardness. It's important to note that increasing the hardness of steel beyond a certain point may lead to reduced toughness and increased brittleness. Therefore, the maximum achievable hardness should be balanced with the desired properties for the specific application, such as strength, ductility, and resistance to wear or impact.

Q: What are the different types of steel round bars used in the marine industry?: Various applications in the marine industry require the use of different types of steel round bars. These round bars are specifically designed to withstand the challenging marine environment and offer high strength and resistance to corrosion. 1. Stainless Steel Round Bars: Due to their exceptional corrosion resistance, stainless steel round bars are extensively used in the marine industry. They can endure saltwater, acids, and other corrosive elements commonly found in the marine environment. Marine fittings, fasteners, and propeller shafts are among the common uses for stainless steel round bars. 2. Carbon Steel Round Bars: Known for their durability and high strength, carbon steel round bars find application in various marine fields such as shipbuilding, offshore structure construction, and marine equipment fabrication. Different grades of carbon steel round bars are available, with higher carbon content providing increased strength and hardness. 3. Alloy Steel Round Bars: Mechanical properties of alloy steel round bars are enhanced by combining various elements like chromium, nickel, and molybdenum with carbon steel. These bars offer excellent strength, toughness, and resistance to corrosion. Marine shafts, gears, and structural components typically make use of alloy steel round bars. 4. Duplex Stainless Steel Round Bars: Combining the properties of austenitic and ferritic stainless steels, duplex stainless steel round bars offer superior corrosion resistance and high strength, making them ideal for marine applications. Offshore platforms, marine vessels, and underwater equipment often utilize duplex stainless steel round bars. 5. Nickel Alloy Round Bars: Nickel alloy round bars are particularly notable for their exceptional resistance to corrosion and ability to withstand high-temperature environments. They are crucial in marine applications where strength, durability, and resistance to corrosive elements are essential. Marine valves, pumps, and heat exchangers frequently employ nickel alloy round bars. Each type of steel round bar used in the marine industry possesses its own unique properties and advantages. The selection of the appropriate steel round bar depends on the specific requirements and application of the marine project.

Q: Can steel round bars be machined easily?: Yes, steel round bars can be machined easily due to their excellent machinability properties.

Q: What are the advantages of using case-hardening steel round bars?: There are several advantages to using case-hardening steel round bars. Firstly, case-hardening steel round bars have a hardened outer layer or "case" while maintaining a relatively soft and ductile core. This allows for excellent wear resistance on the surface, making them ideal for applications where the material comes into contact with abrasive or erosive forces. The hardness of the outer layer also provides increased strength and durability, enhancing the lifespan of the round bars. Another advantage of case-hardening steel round bars is their ability to withstand high impact loads. The hardened outer layer provides a barrier that absorbs and disperses the impact energy, preventing deformation or breakage of the material. This makes them suitable for applications where the round bars are subjected to heavy loads or impacts, such as in machinery or construction equipment. Additionally, case-hardening steel round bars offer improved fatigue resistance. The hardened surface layer helps to distribute stresses evenly, reducing the likelihood of cracks or fractures developing under cyclic loading conditions. This makes them suitable for use in applications that require long-term durability and resistance to repeated stress, such as automotive components or gears. Furthermore, case-hardening steel round bars have excellent machinability. The soft and ductile core allows for easy cutting, drilling, and shaping, while the hardened surface provides the necessary wear resistance. This makes them cost-effective and efficient to work with, as they can be easily formed into various shapes and sizes to meet specific design requirements. In conclusion, the advantages of using case-hardening steel round bars include excellent wear resistance, high impact load resistance, improved fatigue resistance, and excellent machinability. These properties make them a versatile and reliable choice for a wide range of applications in industries such as automotive, construction, and manufacturing.

Q: What are the advantages of using nickel-iron alloy steel round bars?: There are several advantages to using nickel-iron alloy steel round bars. Firstly, nickel-iron alloy steel has excellent resistance to corrosion and oxidation. This makes it highly suitable for use in environments where exposure to moisture, chemicals, or high temperatures is expected. The corrosion resistance of this alloy ensures that the round bars will maintain their structural integrity and durability over time, reducing the need for frequent replacements or repairs. Secondly, nickel-iron alloy steel round bars have excellent mechanical properties. They possess high strength, toughness, and hardness, making them suitable for applications that require heavy-duty performance. These round bars can withstand significant stress and load, making them ideal for use in various industries such as construction, manufacturing, and engineering. Additionally, nickel-iron alloy steel offers good thermal stability and resistance to thermal expansion. This means that the round bars will maintain their shape and dimensions even when exposed to extreme temperatures, ensuring their reliability and performance in high-temperature applications. Furthermore, nickel-iron alloy steel has excellent magnetic properties. It exhibits high magnetic permeability, making it suitable for electromagnetic applications such as transformers, inductors, and magnetic shielding. This property enables the round bars to efficiently conduct and distribute magnetic fields, enhancing the performance of these devices. Lastly, the versatility of nickel-iron alloy steel allows for various manufacturing processes and customization options. It can be easily machined, welded, and formed into different shapes and sizes, providing flexibility in design and application. This adaptability makes nickel-iron alloy steel round bars a preferred choice in many industries. In conclusion, the advantages of using nickel-iron alloy steel round bars lie in their corrosion resistance, excellent mechanical properties, thermal stability, magnetic properties, and versatility. These qualities make them reliable, durable, and suitable for a wide range of applications, ensuring optimal performance and longevity.

Q: What are the standard sizes of steel round bars?: The standard sizes of steel round bars vary, but common diameters range from 1/4 inch to 12 inches.

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