Carbon Steel Bar 1020 S20C C22

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 120000 m.t./month

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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.17-0.23 %	Tensile strength(MPA)	≥253
Si	0.17-0.37 %	Yield strength (MPA)	≥245
Mn	0.35-0.65 %	Elongation (δ5/%)	≥25
Cr	≤0.25 %	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	≤156HB
Cu	≤0.25 %

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)

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 are the limitations of steel round bars?: When selecting the appropriate material for a specific application, it is important to consider the limitations associated with steel round bars. Firstly, weight is a significant factor to consider. Steel round bars can be quite heavy, especially in larger diameters. This can pose challenges during transportation and installation, especially in situations where weight restrictions are a concern. Secondly, corrosion is another limitation of steel round bars. Although steel is known for its strength and durability, it is susceptible to rust and deterioration when exposed to moisture or certain chemicals. To mitigate this, protective coatings can be used or stainless steel round bars can be chosen as they are more resistant to corrosion. Thirdly, machinability is a challenge with steel round bars due to their high hardness and strength. This can result in increased tool wear, reduced cutting speeds, and longer machining times, leading to higher production costs. Cost is also an important consideration. Steel round bars, especially those made from high-quality alloys, can be relatively expensive compared to other materials. This cost factor may limit their use in applications with budget constraints. In terms of design flexibility, steel round bars come in standard sizes and shapes, which may restrict design options in some cases. Additional processing steps such as cutting or forging may be necessary to achieve a specific shape or size, adding to the overall production cost. Lastly, fatigue strength is a limitation of steel round bars. Although they have excellent strength properties, they can be prone to fatigue failure under repeated or cyclic loading. This is particularly relevant in applications where the material is constantly subjected to stress or vibration. Despite these limitations, steel round bars are still widely used in various industries due to their exceptional strength, reliability, and versatility. However, it is crucial to carefully consider these factors to ensure that the chosen material meets the specific requirements of the intended application.

Q: Can steel round bars be threaded?: Yes, steel round bars can be threaded. Threading is a common process used to create a helical ridge on the surface of a round bar, allowing it to be securely fastened to other components or fittings.

Q: What are the advantages of using lead-alloy steel round bars?: There are several advantages of using lead-alloy steel round bars: 1. Enhanced machinability: Lead-alloy steel round bars have excellent machinability due to the presence of lead. The lead acts as a lubricant during machining processes, reducing friction and heat generation. This results in improved tool life and better surface finish of the machined components. 2. Superior wear resistance: Lead-alloy steel round bars exhibit high wear resistance, making them ideal for applications where the material is subjected to abrasive conditions or frequent contact with other surfaces. The lead content in the alloy helps in reducing the wear and tear, thereby increasing the lifespan of the round bars. 3. Improved thermal conductivity: Lead has a higher thermal conductivity compared to steel. Therefore, lead-alloy steel round bars have better heat dissipation properties, making them suitable for applications that involve high temperatures. This characteristic helps in preventing overheating and potential damage to the material. 4. Reduced vibration and noise: The presence of lead in the alloy helps in dampening vibrations and reducing noise levels. This is particularly advantageous in applications where noise reduction is crucial, such as in construction equipment or automotive components. 5. Easy machinability of leaded zones: Lead-alloy steel round bars can be selectively machined to create leaded zones. These leaded zones act as self-lubricating areas, reducing friction and wear between moving parts. This feature is highly beneficial in applications where frequent lubrication is not feasible or practical. 6. Cost-effective solution: Lead-alloy steel round bars offer a cost-effective solution for various industries. The inclusion of lead in the alloy enhances the performance and durability of the material without significantly increasing the overall cost. This makes lead-alloy steel round bars a popular choice for many applications.

Q: Are steel round bars suitable for high-stress applications?: Steel round bars are well-suited for high-stress situations due to their strength and durability. The remarkable properties of steel, including its strength and durability, make it a perfect material for environments with high levels of stress. In particular, round bars offer excellent tensile strength and can withstand heavy loads and intense pressure. They are widely used in industries like construction, manufacturing, and engineering, where reliable and robust materials are needed for high-stress applications. The round shape of the bars also ensures consistent strength, guaranteeing dependable performance even in extreme conditions. Moreover, steel round bars can be heat-treated to enhance their mechanical properties, making them even more suitable for high-stress situations. In summary, steel round bars are a dependable and efficient choice for demanding environments that require exceptional strength and resilience.

Q: What are the common applications of steel round bars?: Steel round bars have numerous common applications across various industries. One common application is in construction, where steel round bars are used for structural support in buildings, bridges, and other infrastructure projects. They are also commonly used in the automotive industry for manufacturing of components such as axles, crankshafts, and suspension systems. Additionally, steel round bars find applications in the manufacturing of machinery, tools, and equipment due to their strength and durability. They are also utilized in the production of furniture, appliances, and various hardware products.

Q: What are the weight calculations for steel round bars?: The weight calculations for steel round bars depend on the diameter and length of the bar. The formula used to calculate the weight is weight = volume × density, where volume = π × (diameter/2)² × length and density = 7.85 g/cm³.

Q: Can steel round bars be used for making cutting tools?: Yes, steel round bars can be used for making cutting tools. Steel is a versatile material that can be hardened and tempered to create sharp and durable cutting edges. Round bars can be machined and shaped into various cutting tool profiles such as drills, lathe tools, milling cutters, and punches. The specific type of steel used will depend on the desired cutting application, as different steel alloys have different properties such as hardness, toughness, and wear resistance. Heat treatment processes like quenching and tempering can further enhance the cutting performance and longevity of the tools. Overall, steel round bars provide a reliable and cost-effective option for manufacturing cutting tools.

Q: Can steel round bars be used in the production of shafts?: Shafts can indeed be produced using steel round bars. The manufacturing process of shafts often involves utilizing steel round bars as a raw material due to their remarkable attributes of strength, durability, and versatility. These bars can be machined or forged into the precise shape and size required for the shaft. With their inherent properties, they are well-suited for a wide range of applications, including the automotive, machinery, and construction industries. Steel round bars boast exceptional mechanical properties such as high tensile strength, impressive impact resistance, and resistance to corrosion. Consequently, they are an ideal choice for shafts that necessitate both a high load-bearing capacity and reliability. Additionally, steel round bars can undergo heat treatment to further enhance their strength and hardness, thereby ensuring optimal performance and longevity of the shafts under diverse operating conditions.

Q: Can steel round bars be used in the production of electrical equipment?: Yes, steel round bars can be used in the production of electrical equipment. Steel is a highly versatile and durable material that can provide structural support and conductivity in various electrical components. The round shape of the bars allows for easy fabrication and assembly, making them suitable for use in electrical equipment manufacturing.

Q: Can steel round bars be used for making body panels?: Indeed, body panels can be crafted using steel round bars. Steel is widely employed in the automotive sector owing to its robustness, endurance, and malleability. By manipulating, joining, and molding round bars, an array of body panel shapes can be achieved, rendering structural reinforcement and safeguarding. Nevertheless, it is crucial to acknowledge that steel round bars may not be the optimal selection for all body panels, as they might possess greater weight when compared to alternative materials like aluminum or carbon fiber. The determination to utilize steel round bars for body panels rests upon factors like the precise vehicle application, desired reduction in weight, and cost considerations.

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