C22 Carbon Steel Round 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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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.37-0.44 %	Tensile strength(MPA)	≥980(100)
Si	0.17-0.37 %	Yield strength (MPA)	≥785(80)
Mn	0.50-0.80 %	Elongation (δ5/%)	≥9
Cr	0.80-1.10 %	Reduction in Area (ψ/%)	≥45
Ni	≤0.30 %	Impact (J)	≥ 47
P	≤0.035 %	Impact toughness value αkv (J/cm2)	≥59(6)
S	≤0.035 %	Hardness	≤207HB
Cu	≤0.030 %

Grade/Material	1020 1045 4140 4130 4150 ASTM A36 A105 S20C S45c SCM440
Available sizes	Round: Dia. 9.5–300mm Square:88-160160mm Flat: Thickness 10–120mm, width 305 – 2200mm
Size tolerance	Length tolerance:+100mm/-0mm Straigthness:<=3mm/m
Delivery condition	Hot rolled or cold drawn or forged, turned or black surface, annealed or QT as customer’s request
Applications	Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.
Inspection	100% Ultrasonic according to the test standards: SEP1921-84,GR.3 CLASS C/C
Packing situation	In bundle or as customer required
Process	EAF+LF+VD ( necessary) +UT+ Peeled(optional) +Turned (optional) + Heat Treatment (optional)
Delivery time	30days after the down payment
Payment term	T/T or L/C

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: What is the standard length of a steel round bar?: The standard length of a steel round bar can differ based on the specific industry and its intended usage. Nevertheless, in most cases, a steel round bar typically measures 20 feet or 6 meters. This particular length finds extensive application in construction, manufacturing, and engineering sectors. It is worth mentioning that custom lengths can also be acquired to align with the specific needs of a project or application.

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: How do you prevent corrosion on steel round bars?: One way to prevent corrosion on steel round bars is by applying a protective coating, such as paint or a corrosion-resistant metal coating like zinc or epoxy. Regular maintenance, including cleaning and removing any dirt or moisture buildup, can also help prevent corrosion. Additionally, storing the steel round bars in a dry and controlled environment can minimize exposure to moisture and prevent corrosion.

Q: Which is stronger, steel pipe or round steel? Which is good at bending?: Round bars are, of course, more powerful, but not much higher.

Q: How are steel round bars used in the manufacturing of valves and fittings?: Valve and fitting manufacturing commonly utilizes steel round bars for their strength, durability, and versatility. These bars serve as the primary raw material for various valve and fitting components. A significant application of steel round bars in valve manufacturing involves producing valve stems. Valve stems control fluid or gas flow through the valve. The round bars are machined and threaded to create the stem, which connects to the valve disc or plug. Steel round bars are chosen for this purpose due to their high tensile strength, ensuring the stem can withstand the required pressure and torque to operate the valve. In fittings manufacturing, steel round bars are frequently used to produce threaded connectors, nipples, and couplings. These components are integral for joining pipes or tubes, enabling fluid or gas transfer in different systems. Steel round bars are easily machinable, allowing manufacturers to create precise threads and shapes necessary for these fittings. Additionally, steel round bars are also employed in fabricating the body or housing of valves and fittings. The bars can be cut, forged, or machined into the desired shape, providing a robust and dependable structure for the valve or fitting. The use of steel in the body guarantees the component's ability to endure high pressures, temperature fluctuations, and corrosive environments. In conclusion, steel round bars have a crucial role in valve and fitting manufacturing. Their strength, durability, and machinability make them an exceptional choice for creating vital components like valve stems, threaded connectors, and the bodies of valves and fittings.

Q: What is the impact strength of a steel round bar?: The impact strength of a steel round bar refers to its ability to withstand sudden applied forces or shock loads without fracturing or breaking. It is usually measured in terms of energy absorbed during impact testing, such as the Charpy or Izod test. The exact impact strength can vary depending on the specific grade and heat treatment of the steel, but steel round bars are generally known for their high impact strength, making them suitable for applications requiring resistance to sudden impacts or dynamic loads.

Q: Can steel round bars be used for making renewable energy systems?: Indeed, the utilization of steel round bars is feasible for the production of renewable energy systems. Steel, being a versatile material, finds extensive usage across multiple industries, including the renewable energy sector. Its robustness, longevity, and resistance against corrosion render it an ideal choice for fabricating frameworks, support structures, and components of renewable energy systems. For instance, steel round bars serve as an excellent building material for manufacturing wind turbine towers, solar panel frames, and support structures for hydroelectric power systems. Wind turbine towers necessitate a sturdy and stable structure to bear the weight of the turbine and endure the forces exerted by the wind. In this regard, steel round bars provide the requisite strength and stability, thereby ensuring the safety and efficiency of wind turbines. Similarly, solar panel frames require a sturdy construction capable of supporting the panels' weight and withstanding adverse weather conditions. Steel round bars can be employed to construct durable frames that securely hold the solar panels in place. Moreover, in the context of hydroelectric power systems, steel round bars prove invaluable in erecting support structures for various components like turbines, generators, and penstocks. Given the colossal pressure and force exerted by water flow, these structures need to possess the necessary durability and strength, making steel an exceptional choice for this purpose. All in all, steel round bars represent a dependable and frequently employed material in the construction of renewable energy systems. Their strength, durability, and resistance to corrosion render them suitable for diverse applications, thereby contributing to the long-term viability and sustainability of renewable energy sources.

Q: What are the advantages of using precipitation-strengthened steel round bars?: Using precipitation-strengthened steel round bars in various applications offers several benefits. Firstly, these bars possess improved mechanical properties, making them stronger and more durable compared to regular steel bars. Through the heat treatment process of precipitation hardening, fine particles form within the steel structure. These particles act as obstacles to dislocation movement, resulting in enhanced strength and hardness. Secondly, the increased strength of precipitation-strengthened steel round bars allows for material usage reduction while maintaining the desired level of structural integrity. This leads to cost savings in terms of raw materials and transportation, making it an economical choice in the construction and manufacturing industries. Additionally, precipitation-strengthened steel round bars exhibit excellent corrosion resistance properties. The formation of fine particles during precipitation hardening creates a dense and uniform microstructure, effectively blocking the movement of corrosive agents. This corrosion resistance makes these bars ideal for applications in harsh environments or industries where exposure to corrosive substances is common. Another advantage of using precipitation-strengthened steel round bars is their ability to withstand high temperatures. The fine particles within the steel structure contribute to improved thermal stability, enabling these bars to maintain their strength and hardness even under elevated temperatures. This makes them suitable for applications involving high-temperature operations, such as in the aerospace and automotive industries. Furthermore, precipitation-strengthened steel round bars possess superior fatigue resistance, making them advantageous in applications that require repetitive or cyclic loading. The precipitation hardening process enhances the material's resistance to fatigue failure, allowing it to withstand prolonged stress without significant deformation or failure. This makes these bars suitable for use in structures subjected to dynamic or fluctuating loads, such as bridges, cranes, and machinery components. In conclusion, precipitation-strengthened steel round bars offer enhanced mechanical properties, reduced material usage, excellent corrosion resistance, high-temperature stability, and superior fatigue resistance. These advantages make them the preferred choice for a wide range of applications, spanning from construction and manufacturing to the aerospace and automotive industries.

Q: What are the different surface treatments available for tool steel round bars?: There are several surface treatments available for tool steel round bars, which are used to enhance the performance, durability, and overall quality of the steel. Some of the common surface treatments for tool steel round bars include: 1. Nitriding: This process involves exposing the tool steel to a nitrogen-rich environment at high temperatures. It forms a hard surface layer that improves wear resistance and reduces friction. 2. Coating: Tool steel round bars can be coated with various materials such as titanium nitride (TiN), titanium carbonitride (TiCN), or chromium nitride (CrN). These coatings provide excellent resistance to wear, corrosion, and heat. 3. Black oxide: It is a chemical treatment that forms a black oxide layer on the surface of the tool steel. This treatment improves corrosion resistance and reduces the risk of rusting. 4. Heat treatment: Tool steel round bars can undergo heat treatment processes such as annealing, tempering, or quenching. These treatments help to improve the hardness, strength, and toughness of the steel. 5. Surface grinding: This process involves removing a thin layer of material from the surface of the tool steel. It helps to achieve a smooth and polished surface, enhancing the aesthetics and reducing the risk of surface defects. 6. Shot peening: It is a process where small metal or ceramic particles are propelled onto the surface of the tool steel at high velocity. This treatment induces compressive stress, improving the fatigue resistance and extending the lifespan of the steel. 7. Electropolishing: This treatment involves immersing the tool steel in an electrolyte bath and applying an electric current. It helps to remove surface imperfections, enhance the surface finish, and improve corrosion resistance. These surface treatments can be chosen based on the specific requirements and applications of the tool steel round bars. Each treatment offers unique benefits and can significantly enhance the performance and longevity of the tool steel.

Q: What is the difference between strip steel and round steel? Where are they mainly used?: Difference between round bar and other steel bars:(1), is not the same, round shape light round, no pattern without ribs, other steel surface appearance is engraved or ribbed, cohesive force that cause steel and concrete, and the bond strength of steel and concrete in the other.(2) the composition is different. Round steel (grade a steel) belongs to ordinary low carbon steel, and most other steel bars are alloy steel.(3), the strength is not the same, low strength steel, and other steel with high strength, the diameter of the same size as compared with other steel, round steel can bear the pulling force than other reinforced small, but the plastic steel reinforced bar is stronger than the other, there is a large deformation in the break before, while the other bars in the break before the deformation is much smaller.

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