High Strength Steel Round Bar 4140 Round Bar Steel

High Strength Steel Round Bar 4140 Round Bar Steel System 1

High Strength Steel Round Bar 4140 Round Bar Steel System 2

High Strength Steel Round Bar 4140 Round Bar Steel System 3

High Strength Steel Round Bar 4140 Round Bar Steel System 4

High Strength Steel Round Bar 4140 Round Bar Steel

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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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1,Size of 4140 Carbon Alloy Steel
Round bar	Diameter(mm)	Length (mm)
20~800	3000~9000
Plate	Thickness(mm)	Width (mm)	Length (mm)
Max:800	Max:2200	Max:9000
The specification can be customized.
2,Chemical Compositons
Grade	C	Si	Mn	P	S	Cr	Mo	Ni
42CrMo	0.38~0.45	0.17~0.37	0.50~0.8	≤0.035	≤0.035	0.9~1.2	0.15-0.25	≤0.3
4140	0.40~0.45	0.15~0.35	0.75~1.0	≤0.035	≤0.040	0.8~1.1	0.15-0.25	-
SCM44	0.38~0.43	0.15~0.35	0.60~0.9	≤0.030	≤0.030	0.9~1.2	0.15-0.30	≤0.25
1.7225	0.38~0.45	≤0.40	0.60~0.9	≤0.025	≤0.035	0.9~1.2	0.15-0.30
3,Features of 4140 alloy steel
1, Chromium molybdenum alloy steel
2, Slightly higher carbon content then 4130
3, Greater strength and heat treatment
4,Typical Applications
1, Applications in the oil and gas sector
2, Connection rods, collets, conveyor pins,
3, Gears, stem assemblies,
4, Pump shafts and tool holders

Alloy Steel	5140,5115,5120,5130,5145,4118,4130,4135,6150,5115,4142,4130,4118,6150,4140,4720,4320 ,E9310,8620,4340
Tool Steel	H13,1.2344,SKD61,D2,SKD11,1.2379,1.2510,01,SKS3,95MnWCr5,D3,SKD1,1.2419, SKS31,H21,SKD5,1.2581,P20,35CrMo7,1.2738,1.2316,M2
Bearing Steel	GCr15,52100,SUJ1,SUJ2,100Cr6,1.2067,55C,8620,4320,9310,440C,M50
Spring Steel	9260,SUP6,SUP7,1.7108,54SiCr6,1.7102,5155,SUP9,1.7176,5160,1.7177,6150, SUP10,51CrV4,1.8159
Stainless Steel	321,sus321,1.4541,304,SUS304,1.4301,410,SUS410,1.4006,420,1.4021,1.4028, 434,1.4113,316L,SUS316L,1.4435,630,1.4542,431,1.4057,201,202,301

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 are the different types of steel used in manufacturing round bars?: Round bars in manufacturing can be made from various types of steel. The most commonly used types include: 1. Carbon Steel: This is the go-to steel for manufacturing round bars due to its strength and durability. It mainly consists of iron and carbon and finds application in construction, automotive, and machinery. 2. Alloy Steel: By adding elements like manganese, nickel, chromium, and molybdenum to carbon steel, alloy steel is formed. This enhances its strength and hardness, making it suitable for applications that demand high strength and resistance to wear and tear. 3. Stainless Steel: A type of alloy steel, stainless steel contains a minimum of 10.5% chromium. This high chromium content gives it excellent corrosion resistance, making it ideal for applications exposed to moisture or chemicals. Stainless steel round bars are commonly used in kitchen utensils, medical equipment, and automotive parts manufacturing. 4. Tool Steel: Tool steel is an alloy steel designed specifically for high hardness, wear resistance, and heat resistance. It is commonly used in manufacturing cutting tools, dies, and molds. Tool steel round bars are usually made from high-carbon steel with additional elements like tungsten, vanadium, or cobalt. 5. Bearing Steel: Bearing steel is an alloy steel specifically formulated for bearing applications. It is characterized by its high hardness, wear resistance, and fatigue strength. Bearing steel round bars are widely used in bearing manufacturing for industries like automotive, aerospace, and industrial machinery. These examples demonstrate the range of steel types available for manufacturing round bars. The specific choice of steel depends on the desired properties and requirements of the application at hand.

Q: Lightning protection earthing zinc plating flat iron and round steel welding method, need to flat iron wrapped in round steel outside welding?: The flat steel is not required to be wrapped outside the round bar, and the round steel can be directly welded on the flat steel, and the welding joint area can not be smaller than round steel or flat steel, and the section is a cross section

Q: Difference between cold drawn round steel and round steel: The free torsion rigidity of hot rolled steel is higher than that of cold rolled steel, so the torsion resistance of hot rolled steel is better than that of cold rolled steel.

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: Are steel round bars available in different lengths?: Yes, steel round bars are available in different lengths.

Q: What are the advantages of using nickel-molybdenum alloy steel round bars?: There are several advantages of using nickel-molybdenum alloy steel round bars: 1. High strength and durability: Nickel-molybdenum alloy steel round bars have excellent strength and durability properties, making them suitable for use in high-stress applications. They can withstand heavy loads and provide long-lasting performance. 2. Corrosion resistance: The addition of nickel in the alloy enhances its corrosion resistance, making it resistant to various corrosive environments. This makes nickel-molybdenum alloy steel round bars ideal for use in industries where exposure to chemicals or moisture is common, such as the oil and gas industry or marine applications. 3. High temperature resistance: Nickel-molybdenum alloy steel round bars exhibit excellent heat resistance properties, allowing them to maintain their mechanical strength and structural integrity at high temperatures. This makes them suitable for use in applications where elevated temperatures are present, such as heat exchangers or power generation equipment. 4. Excellent machinability: Nickel-molybdenum alloy steel round bars can be easily machined and fabricated, allowing for various customization options. This makes them versatile and easily adaptable to different project requirements. 5. Weldability: These alloy steel round bars have good weldability, which means they can be easily joined to other components or structures using standard welding techniques. This makes them convenient for manufacturing processes and construction projects. 6. Cost-effective: Despite their excellent properties, nickel-molybdenum alloy steel round bars are relatively cost-effective compared to other high-performance alloys. This makes them a cost-efficient choice for various applications, providing value for money without compromising on quality. Overall, the advantages of using nickel-molybdenum alloy steel round bars include high strength, corrosion resistance, temperature resistance, machinability, weldability, and cost-effectiveness. These properties make them a preferred choice for various industries and applications where superior performance and durability are required.

Q: Can steel round bars be used in the production of telecommunications equipment?: Yes, steel round bars can be used in the production of telecommunications equipment. Steel is a versatile material that offers strength and durability, making it suitable for various applications, including telecommunications equipment. Steel round bars can be used to create structural components, connectors, brackets, and supports, among other parts required in the production of telecommunications equipment.

Q: What are the advantages of using nickel-chromium-manganese alloy steel round bars?: Nickel-chromium-manganese alloy steel round bars offer numerous benefits in various applications. Firstly, this type of alloy steel provides exceptional strength and durability. The combination of nickel, chromium, and manganese enhances the overall strength of the steel, making it resistant to wear, impact, and deformation. This is particularly advantageous in industries such as construction, manufacturing, and automotive, where the round bars are commonly used for structural support and load-bearing purposes. Secondly, the round bars made from nickel-chromium-manganese alloy steel exhibit outstanding corrosion resistance. The presence of nickel and chromium in the alloy composition results in high resistance to rust and oxidation, even in harsh environments or exposure to corrosive substances. This property is crucial in applications where the round bars are exposed to moisture, chemicals, or high temperatures, such as marine environments or chemical processing plants. Additionally, this type of alloy steel offers excellent weldability and machinability. The balanced composition of nickel, chromium, and manganese enables easy welding and machining operations. This convenience allows fabricators and manufacturers to work with the round bars, creating complex shapes or structures without compromising the material's integrity. Moreover, nickel-chromium-manganese alloy steel round bars possess exceptional heat resistance. The presence of nickel and chromium in the alloy composition enhances its ability to withstand high temperatures without losing strength or shape. This property makes it suitable for applications involving exposure to extreme heat, such as furnace components, heat exchangers, or high-temperature industrial processes. Lastly, the use of nickel-chromium-manganese alloy steel round bars often leads to long-term cost savings. Due to their remarkable strength and durability, these round bars have a longer lifespan compared to other materials. This reduces the need for frequent replacements, resulting in lower maintenance costs and improved overall efficiency. In conclusion, the advantages of nickel-chromium-manganese alloy steel round bars include remarkable strength and durability, corrosion resistance, weldability, machinability, heat resistance, and long-term cost savings. These properties make them a preferred choice in various industries that require high-performance materials.

Q: How are steel round bars used in the construction of high-rise buildings?: Steel round bars are commonly used in the construction of high-rise buildings due to their strength, durability, and versatility. These bars are typically made of carbon steel, which has excellent mechanical properties and can withstand high loads and pressures. In the construction of high-rise buildings, steel round bars are primarily used in reinforced concrete structures. They are commonly used as reinforcement in concrete beams, columns, and slabs. The bars are embedded in the concrete to provide additional strength and stiffness to the overall structure. One of the main advantages of using steel round bars is their ability to resist tension forces. Concrete is strong in compression but weak in tension, so the steel bars act as tension reinforcement, preventing the concrete from cracking or failing under tension loads. This helps to enhance the structural integrity and overall safety of the building. Additionally, steel round bars can be easily bent, shaped, and welded, allowing for flexible design and construction possibilities. They can be customized to specific lengths and diameters to suit the requirements of the building project. This versatility makes them ideal for constructing various structural elements, such as beams and columns, which need to be precisely engineered to support the weight and stresses of a high-rise building. Moreover, steel round bars have excellent resistance to corrosion, which is crucial in the construction of high-rise buildings that are exposed to various environmental elements. The corrosion-resistant properties of steel ensure the long-term durability and lifespan of the structure. Overall, steel round bars play a vital role in the construction of high-rise buildings by providing strength, durability, and flexibility to the reinforced concrete structures. They enhance the overall structural integrity, safety, and longevity of the building, making them an essential component in modern construction practices.

Q: Are steel round bars suitable for the manufacturing of shafts?: Yes, steel round bars are highly suitable for the manufacturing of shafts. Steel round bars offer excellent strength, durability, and resilience, making them ideal for applications that require transmitting power, such as in shafts. Their uniform shape and consistent diameter also facilitate ease of machining and assembly, further enhancing their suitability for shaft manufacturing.

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