20MnCr5 Alloy Steel Round Bars SAE 5152 System 1

20MnCr5 Alloy Steel Round Bars SAE 5152 System 2

20MnCr5 Alloy Steel Round Bars SAE 5152 System 3

20MnCr5 Alloy Steel Round Bars SAE 5152 System 4

20MnCr5 Alloy Steel Round Bars SAE 5152

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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	0.17-0.22 %	Tensile strength(MPA)	≥1482
Si	≤0.25 %	Yield strength (MPA)	≥1232
Mn	1.10-1.50 %	Elongation (δ5/%)	≥13
Cr	1.00-1.30 %	Reduction in Area (ψ/%)	≥57
Ni	≤0.30 %	Impact toughness value αkv (J/cm2)	≥73
P	≤0.035 %	Hardness	≤357HB
S	≤0.035 %

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: How are steel round bars used in the construction of tunnels and underground structures?: Steel round bars are commonly used in the construction of tunnels and underground structures as reinforcement for concrete. These bars are placed within the concrete to provide strength and stability, preventing the structure from cracking or collapsing under pressure. The steel round bars also enhance the overall durability and load-bearing capacity of the tunnel or underground structure, ensuring its long-term structural integrity.

Q: How do steel round bars perform under vibration or resonance?: Steel round bars have excellent performance under vibration or resonance due to their high strength and stiffness. They are able to withstand and absorb vibrations, minimizing the risk of failure or damage. Additionally, steel round bars possess good damping properties, which helps in dissipating energy and reducing the amplitude of vibrations, resulting in improved stability and reduced noise levels.

Q: Are steel round bars suitable for use in the manufacturing of fittings?: Yes, steel round bars are suitable for use in the manufacturing of fittings. They have excellent strength and durability properties, making them ideal for creating fittings that require high structural integrity. Additionally, steel round bars can be easily machined and welded, allowing for precise and efficient manufacturing processes.

Q: How are steel round bars priced?: Steel round bars are typically priced based on several factors. One of the key factors is the cost of raw materials, which includes the cost of steel billets or ingots used to produce the round bars. The price of these raw materials can fluctuate based on market conditions, such as supply and demand dynamics and changes in input costs. Another factor that influences the pricing of steel round bars is the manufacturing process involved. The cost of transforming raw materials into finished round bars includes expenses such as energy consumption, labor costs, and equipment maintenance. These costs can vary depending on the complexity of the manufacturing process and the efficiency of the production facilities. Market conditions also play a significant role in determining the pricing of steel round bars. Factors such as global economic trends, industry demand, and competition among suppliers can impact the market price. If there is high demand for steel round bars, manufacturers may be able to charge a premium price. Conversely, during periods of oversupply, prices may be lower as suppliers compete for customers. Additionally, the size, grade, and quality of the steel round bars can affect the pricing. Larger diameter bars or specialty grades that require additional processing steps or high-quality raw materials may be priced higher than standard sizes or lower-grade bars. Finally, transportation costs and logistics can also influence the pricing of steel round bars. Shipping distances, freight rates, and any additional handling fees can add to the overall cost of the product. In summary, the pricing of steel round bars is influenced by the cost of raw materials, the manufacturing process, market conditions, the size and grade of the bars, and transportation costs. Understanding these factors can help buyers and sellers negotiate fair prices for steel round bars.

Q: What are the different types of carbon steel round bars?: There are several different types of carbon steel round bars available on the market. Some of the commonly used types include: 1. Mild Steel Round Bars: These are the most common type of carbon steel round bars. They have a low carbon content and are easy to weld, cut, and form. Mild steel round bars are suitable for general engineering purposes and have excellent machinability. 2. Medium Carbon Steel Round Bars: These round bars have a higher carbon content than mild steel round bars. They offer better strength and hardness, making them suitable for applications that require higher load-bearing capacity. Medium carbon steel round bars are commonly used in automotive, construction, and machinery industries. 3. High Carbon Steel Round Bars: These round bars have a higher carbon content, typically above 0.60%. They offer superior strength, hardness, and wear resistance. High carbon steel round bars are commonly used in applications that require high strength, such as springs, cutting tools, and axles. 4. Free Cutting Steel Round Bars: These round bars have added elements, such as sulfur or lead, to improve machinability. They are commonly used in applications where easy machining is required, such as in the production of bolts, screws, and fittings. 5. Alloy Steel Round Bars: These round bars contain additional alloying elements, such as chromium, nickel, or molybdenum, to enhance specific properties. Alloy steel round bars offer improved strength, hardness, corrosion resistance, and heat resistance. They are commonly used in applications that require high performance, such as in the aerospace, oil and gas, and automotive industries. It is important to consider the specific requirements of your project or application when selecting the type of carbon steel round bar to ensure optimal performance and durability.

Q: What is galvanized round bar?: A cylindrical bar of iron or steel bar that crosses a layer of zinc on its surface.

Q: Can steel round bars be used for making hydraulic systems?: Steel round bars can indeed be used for making hydraulic systems. Steel is a durable and strong material that can withstand high pressure and extreme conditions, making it suitable for hydraulic applications. Steel round bars can be machined and shaped into various components such as cylinders, pistons, and shafts, which are essential parts of hydraulic systems. Additionally, steel is resistant to corrosion, which is crucial for hydraulic systems that often come into contact with fluids. However, it is important to ensure that the steel round bars used for hydraulic systems meet the necessary specifications and requirements, such as hardness, tensile strength, and dimensional accuracy, to ensure optimal performance and reliability.

Q: Are steel round bars suitable for architectural applications?: Architectural applications can indeed make use of steel round bars. Steel, being a versatile and durable material, is commonly employed in construction and architectural projects. The utilization of steel round bars for architectural purposes offers numerous advantages. Primarily, steel round bars are renowned for their robustness and load-bearing capacity. They possess excellent tensile strength and can withstand heavy loads, making them suitable for applications where structural integrity is paramount. Whether employed as support beams, columns, or other structural elements, steel round bars offer a dependable and long-lasting solution. Furthermore, steel round bars exhibit high resistance to corrosion and fire, which is crucial for architectural applications. They can endure harsh weather conditions, including extreme temperatures, without compromising their structural integrity. This resistance to corrosion and fire renders steel round bars a secure and reliable choice for architectural projects. Moreover, steel round bars can be conveniently fabricated and customized to meet specific design requirements. They can be cut, welded, bent, and shaped into various forms, enabling architects and designers to create unique and innovative structures. The versatility of steel round bars makes them suitable for a wide range of architectural applications, such as bridges, stadiums, and high-rise buildings. Additionally, steel round bars are cost-effective in comparison to certain other building materials. They possess a longer lifespan and require minimal maintenance, thereby reducing the overall lifecycle costs of a project. The combination of cost-effectiveness, durability, and versatility contributes to the popularity of steel round bars in architectural applications. In conclusion, steel round bars are indeed appropriate for architectural applications. Their strength, resistance to corrosion and fire, ease of fabrication, and cost-effectiveness make them an ideal choice for a diverse array of architectural projects. Whether employed for structural elements or decorative purposes, steel round bars offer a reliable and aesthetically pleasing solution for architects and designers.

Q: What are the advantages of using nickel-chromium-manganese alloy steel round bars?: The advantages of using nickel-chromium-manganese alloy steel round bars include their excellent strength and durability, high resistance to corrosion and oxidation, good machinability, and the ability to withstand high temperatures and pressures. Additionally, this alloy offers good weldability and can be easily formed into various shapes and sizes, making it suitable for a wide range of applications in industries such as aerospace, automotive, and construction.

Q: What is the difference between hot rolled and cold rolled steel round bars?: The main difference between hot rolled and cold rolled steel round bars lies in the process of production. Hot rolled steel round bars are formed by heating the steel above its recrystallization temperature and then rolling it into the desired shape. This process makes the steel more malleable and ductile, resulting in a rougher surface finish. On the other hand, cold rolled steel round bars are formed by rolling the steel at room temperature. This process produces a smoother surface finish and tighter dimensional tolerances, but it also makes the steel less malleable. Overall, the choice between hot rolled and cold rolled steel round bars depends on the specific application and desired characteristics of the end product.

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