4130 4140 4150 20MnCr5 42CrMo4 8620 4340 Alloy Round Steel Bar

4130 4140 4150 20MnCr5 42CrMo4 8620 4340 Alloy Round Steel Bar System 1

4130 4140 4150 20MnCr5 42CrMo4 8620 4340 Alloy Round Steel Bar System 2

4130 4140 4150 20MnCr5 42CrMo4 8620 4340 Alloy Round Steel Bar System 3

4130 4140 4150 20MnCr5 42CrMo4 8620 4340 Alloy Round Steel Bar System 4

4130 4140 4150 20MnCr5 42CrMo4 8620 4340 Alloy Round Steel Bar

Ref Price:

Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

Inquire Now

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Grade:	S45CB, 40Cr, SCM440, SCM420, 42CrMo, AISI4140, customized is available.
Size:	25-450mm
Length:	5.8m/6m fixed length, or as customized.
MOQ:	20MT
Remark:	chamfering and straightness
Packing:	arround 3MT per bundle

Grade	C	Si	Mn	P	S	Cr	Mo
42CrMo4	0.38-0.45	0.17-0.37	0.40-0.70	≤0.035	≤0.035	0.90-1.20	0.15-0.25
1.7225	0.38-0.45	≤0.40	0.60-0.90	≤0.025	≤0.035	0.90-1.20	0.15-0.30
4140	0.38-0.43	0.15-0.35	0.75-1.00	≤0.035	≤0.040	0.80-1.10	0.15-0.25

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)

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 in the production of bearings?: No, steel round bars cannot be used in the production of bearings. Bearings require specific materials that can withstand high loads and offer low friction. Steel round bars are not designed with the necessary characteristics to fulfill these requirements. Instead, bearings are typically made from specialized materials such as chrome steel, stainless steel, or ceramic materials, which offer excellent durability and performance under the demanding conditions in which bearings operate.

Q: What are the different types of steel round bars used in the automotive steering systems?: In automotive steering systems, there exists a range of steel round bars with distinctive properties and advantages. 1. Carbon Steel Round Bars: These round bars are extensively utilized in automotive steering systems due to their superior strength and durability. They are suitable for various steering components like tie rods and drag links. Additionally, carbon steel round bars are cost-effective and readily accessible, making them a popular choice in the automotive industry. 2. Alloy Steel Round Bars: By incorporating alloying elements such as chromium, nickel, and molybdenum into carbon steel, alloy steel round bars enhance their strength, hardness, and wear resistance. They are particularly useful in high-stress areas of the steering system, including steering shafts and steering knuckles, where additional strength is required. 3. Stainless Steel Round Bars: Stainless steel round bars are renowned for their exceptional resistance to corrosion, making them ideal for steering components exposed to harsh environments or moisture. Steering column shafts and tie rod ends frequently incorporate stainless steel round bars. 4. Tool Steel Round Bars: Steering system components that demand high hardness, wear resistance, and toughness often utilize tool steel round bars. These bars are commonly employed in the production of steering gears and other precision steering components. 5. High-Strength Low-Alloy (HSLA) Steel Round Bars: HSLA steel round bars, a type of alloy steel, offer a favorable balance between strength, toughness, and formability. Lightweight steering system components often employ HSLA steel round bars to reduce weight while maintaining structural integrity. Ultimately, the selection of steel round bars in automotive steering systems depends on factors such as the specific application, desired strength, durability, and corrosion resistance. Manufacturers carefully choose the appropriate steel type to ensure optimal performance and safety in steering systems.

Q: What is the elasticity of a steel round bar?: The elasticity of a steel round bar refers to its ability to return to its original shape after being subjected to external forces or deformation. Steel is known for its high elasticity, meaning it can withstand significant stress and strain without permanent deformation. This property makes steel round bars suitable for various applications, including construction, manufacturing, and engineering.

Q: What are the different surface defects that can occur in steel round bars?: There are several different surface defects that can occur in steel round bars. These defects can be classified into various categories based on their appearance and severity. Some of the common surface defects include: 1. Scale: Scale is a thin layer of oxide that forms on the surface of steel during the manufacturing process. It appears as a rough, flaky coating and can be easily removed by mechanical means. 2. Pits: Pits are small depressions or craters that can occur on the surface of the steel. They are usually caused by corrosion or mechanical damage. Pits can weaken the structural integrity of the steel and may require repair or replacement. 3. Scratches: Scratches are shallow grooves or cuts on the surface of the steel. They can be caused by handling, transportation, or machining processes. While minor scratches may not affect the performance of the steel, deep scratches can lead to stress concentration and potential failure. 4. Roll marks: Roll marks are raised or depressed lines or patterns that are left on the surface of the steel during the rolling process. These marks are typically caused by the uneven pressure distribution between the rolls and can affect the dimensional accuracy and surface quality of the steel. 5. Laminations: Laminations are thin layers or bands of non-metallic inclusions that can occur parallel to the surface of the steel. They are usually caused by inadequate refining or improper casting techniques. Laminations can decrease the strength and toughness of the steel and may require further processing or rejection. 6. Decarburization: Decarburization refers to the loss of carbon content on the surface of the steel. It can occur during heating, annealing, or hot working processes. Decarburization can reduce the hardness and strength of the steel and may lead to premature failure under load. 7. Surface cracks: Surface cracks are visible cracks that occur on the surface of the steel. They can be caused by excessive cooling rates, improper heat treatment, or mechanical stress. Surface cracks can compromise the structural integrity of the steel and may require repairs or rejection. These are just a few examples of the different surface defects that can occur in steel round bars. It is essential to inspect and address these defects to ensure the quality and performance of the steel in various applications.

Q: What are the advantages of using nickel-tin alloy steel round bars?: There are several advantages of using nickel-tin alloy steel round bars. Firstly, the addition of nickel improves the corrosion resistance of the steel, making it suitable for applications in harsh and corrosive environments. Secondly, tin improves the machinability and workability of the steel, allowing for easy shaping and fabrication. Additionally, the alloy steel round bars exhibit high strength and excellent mechanical properties, making them ideal for structural applications that require durability and reliability. Lastly, the combination of nickel and tin enhances the overall performance and longevity of the steel, making it a cost-effective choice in various industries such as automotive, aerospace, and marine.

Q: How do you calculate the length of a steel round bar?: To calculate the length of a steel round bar, you need to measure its diameter and then use a simple formula involving the diameter and the mathematical constant pi (π). First, use a caliper or a measuring tape to measure the diameter of the steel round bar at its widest point. Make sure to measure across the center of the bar for an accurate result. Once you have the diameter, you can calculate the circumference of the round bar by multiplying the diameter by pi (π). The formula to calculate the circumference is: Circumference = π × Diameter Finally, to determine the length of the round bar, you either need to know the number of complete rotations it makes or measure the distance covered by it. If you know the number of rotations, multiply the circumference by the number of rotations. If you are measuring the distance covered, simply use the measured distance as the length of the round bar.

Q: What are the different types of steel round bars available in the market?: There are several different types of steel round bars available in the market, each with its own unique characteristics and applications. Some of the most common types include: 1. Mild Steel Round Bars: These are the most commonly used type of steel round bars due to their versatility and affordability. They have a low carbon content and are easy to weld and machine, making them suitable for a wide range of applications. 2. Carbon Steel Round Bars: Carbon steel round bars have a higher carbon content than mild steel, which gives them increased strength and hardness. They are commonly used in applications that require high strength, such as construction and machinery manufacturing. 3. Alloy Steel Round Bars: Alloy steel round bars are made by adding various alloying elements, such as chromium, nickel, or molybdenum, to improve their mechanical properties. These bars offer enhanced strength, toughness, and resistance to wear and corrosion, making them ideal for applications in the aerospace, automotive, and oil and gas industries. 4. Stainless Steel Round Bars: Stainless steel round bars are highly corrosion-resistant due to the presence of chromium, which forms a protective oxide layer on the surface. They are widely used in industries such as food processing, pharmaceuticals, and chemical processing, where resistance to corrosion and hygiene are crucial. 5. Tool Steel Round Bars: Tool steel round bars are specifically designed for tooling applications, such as cutting, drilling, and shaping materials. They have high hardness, wear resistance, and heat resistance, making them suitable for manufacturing tools and dies. 6. Duplex Steel Round Bars: Duplex steel round bars are a type of stainless steel that contains both austenitic and ferritic microstructures. They offer a combination of high strength, excellent corrosion resistance, and good weldability, making them ideal for applications in the chemical and petrochemical industries. These are just a few examples of the different types of steel round bars available in the market. The choice of the right type depends on the specific requirements of the application, including strength, corrosion resistance, machinability, and cost.

Q: How are steel round bars measured and specified?: Steel round bars are measured and specified based on their diameter, which is typically expressed in millimeters or inches. The measurement is taken across the widest point of the circular cross-section of the bar. In addition to the diameter, the length of the bar is also specified. The measurements and specifications are crucial in determining the appropriate size and quantity of steel round bars required for a particular application or project.

Q: What are the different grades of steel round bars?: Steel round bars come in various grades, each with its own distinct properties and characteristics. Some of the most commonly used grades are as follows: 1. Mild Steel, also known as low carbon steel, is widely preferred due to its affordability and versatility. It has a relatively low carbon content and is easily weldable and malleable. 2. Carbon Steel has a higher carbon content compared to mild steel, resulting in increased strength and durability. It is commonly used in applications that demand high strength and hardness, such as construction and machinery. 3. Alloy Steel round bars are created by combining carbon steel with different elements like chromium, nickel, or molybdenum. This combination enhances the material's properties, such as improved corrosion resistance, toughness, and tensile strength. 4. Stainless Steel round bars are predominantly made of iron and contain at least 10.5% chromium. This grade of steel is renowned for its exceptional corrosion resistance and is commonly used in industries, such as food and pharmaceuticals, where cleanliness and hygiene are critical. 5. Tool Steel round bars are specifically designed to withstand high temperatures, heavy loads, and repetitive impacts. They possess excellent hardness, wear resistance, and toughness, making them ideal for manufacturing tools and dies. 6. High-Speed Steel (HSS) round bars, a type of tool steel, can maintain their hardness even at high cutting speeds. They find extensive use in cutting, drilling, and machining applications that require high speeds, such as the production of drills and milling cutters. These are just a few examples of the wide variety of steel round bar grades available. Each grade is tailored to meet specific requirements in different industries and applications. It is crucial to select the appropriate grade based on factors like strength, corrosion resistance, and desired properties for a particular project or usage.

Q: Are steel round bars available in different shapes?: No, steel round bars are specifically designed and manufactured to have a cylindrical shape and are not available in different shapes.

Send your message to us

*Email

*TEL

*Quantity

*Unit