35cd4 Alloy Structural Steel Round Bars System 1

35cd4 Alloy Structural Steel Round Bars System 2

35cd4 Alloy Structural Steel Round Bars System 3

35cd4 Alloy Structural Steel Round Bars System 4

35cd4 Alloy Structural Steel Round Bars

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 50 m.t.

Supply Capability:: 10000 m.t./month

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Grade	Tensile Strength (Mpa)	Yield Strength (Mpa)	Elongation (%)	Reduction of Area (%)	Charpy Impact (J)	Hardness (HB)
35cd4	≥985	≥835	≥12	≥45	≥63	229

Grade	C	Cr	Mo	Si	Mn	P	S	Ni	Cu
35cd4	0.32-0.40	0.80-1.10	0.15-0.25	0.17-0.37	0.40-0.70	≤0.035	≤0.035	≤0.30	≤0.30

Carbon Steel Round Bar	SS400, S235JR,Q235, ASTM A36, Fe360A, Fe360B,SM400A,080A15, SS41,E235B
SAE 1020, AISI 1020, ASTM 1020, S20C, 20#, 050A20
SAE 1045, AISI 1045, ASTM 1045, S45C, 45#,EN8, XC45, XC48, 45B, C45, CK45, CM45, 060A47, R683/IC45e
Alloy Steel Round Bar	40Cr, DIN 1.7035, SAE 5140, AISI 5140, ASTM 5140, SCr440, 41Cr4, 530A40, 42Cr4, 40X, R683/VII3
SAE4140,42CrMo, 42CrMo4, DIN 1.7225, SCM440,EN19, 42CD4, 708M40, R683/II3
SAE 4340, 40CrNiMoA, EN24, SNCM439, 817M40,40XMA, R683/III4
SAE 8620,,AISI 8620, ASTM 8620, 20CrNiMo,SNCM220, 805M20
SAE52100, AISI52100,ASTM E52100, GCr15, SUJ2, 100C6, 100Cr6, 1.3505, 534A99, IIIX15

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 for making wire?: Yes, steel round bars can be used for making wire. Steel round bars can be processed into wire by a process called wire drawing. In this process, the steel round bar is pulled through a series of progressively smaller dies to reduce its diameter until it reaches the desired wire size. This process is commonly used in the manufacturing of various types of wire, including steel wire used in construction, electrical wiring, fencing, and other applications. The steel round bars used for making wire are typically made from carbon steel, which provides the necessary strength and durability for the wire to be used in various applications.

Q: Can steel round bars be used in the fabrication of machinery?: Yes, steel round bars can be used in the fabrication of machinery. Steel round bars are often chosen for their high strength and durability, making them suitable for various applications in machinery fabrication. Additionally, their uniform shape and ease of machining make them versatile for use in different components and structures of machinery.

Q: Can steel round bars be coated or painted?: Yes, steel round bars can be coated or painted. Coating or painting steel round bars serves several purposes, such as preventing corrosion, enhancing aesthetics, and providing additional protection against environmental factors. Coatings and paints can be applied to steel round bars using various methods, including powder coating, electroplating, or wet paint application. These processes involve preparing the surface of the steel round bar by removing any existing rust or contaminants, followed by the application of the chosen coating or paint. The type of coating or paint used will depend on the specific requirements of the steel round bars, such as the intended use, environmental conditions, and desired appearance. Coating or painting steel round bars can significantly extend their lifespan, improve their visual appeal, and ensure their durability in various applications.

Q: Can steel round bars be used in the manufacturing of power transmission components?: Yes, steel round bars can be used in the manufacturing of power transmission components. Steel round bars are known for their high strength, durability, and ability to withstand heavy loads, making them suitable for various applications in power transmission. These components include gears, shafts, couplings, and other parts that need to transmit power efficiently and reliably.

Q: What are the tolerance levels for steel round bars?: Steel round bars have varying tolerance levels depending on the specific application and industry standards. To ensure precision in terms of diameter, straightness, and surface finish, steel round bars are typically produced with tight dimensional tolerances. Diameter tolerances specify the acceptable range of deviation from the nominal diameter of the round bar and are expressed as a plus or minus value, such as +/- 0.005 inches. The specific tolerance depends on the size, type of steel round bar, and application requirements. Straightness tolerances determine the allowable amount of deviation from a perfectly straight line along the length of the round bar. This tolerance is expressed as the maximum distance between the round bar and a straight edge placed along its length. For instance, a straightness tolerance of 0.030 inches per foot means that a one-foot section of the round bar can deviate up to 0.030 inches from a straight line. Surface finish tolerances specify the acceptable level of imperfections or irregularities on the surface of the round bar. This tolerance is often expressed using roughness average (Ra) or roughness peak (Rz) values. The specific tolerance depends on the desired surface finish and application requirements. It is worth noting that tolerance levels may also be subject to industry-specific standards established by organizations like the American Society for Testing and Materials (ASTM) or the International Organization for Standardization (ISO). These standards provide guidelines and specifications for various steel products, including round bars, to ensure consistent quality and performance. Ultimately, determining the tolerance levels for steel round bars involves considering the specific application requirements, industry standards, and the capabilities of the manufacturing process.

Q: Can steel round bars be anodized?: Steel round bars cannot be anodized as anodizing is exclusively tailored for aluminum and its alloys. This process entails generating an oxide layer on the metal's surface, offering improved corrosion resistance and decorative possibilities. In contrast, steel lacks the ability to form a stable oxide layer like aluminum, thus precluding anodization. Nevertheless, alternative surface treatment alternatives, such as galvanizing or powder coating, can be employed for steel, yielding comparable advantages.

Q: What is the difference between carbon steel and stainless steel round bars?: Carbon steel and stainless steel round bars differ primarily in their composition and properties. Carbon steel is primarily made up of iron and carbon, with trace amounts of other elements. It is known for its strength and durability, making it ideal for various applications in industries such as construction and automotive. Carbon steel round bars are generally more affordable than stainless steel round bars. Stainless steel, on the other hand, is a steel alloy that contains at least 10.5% chromium. This addition of chromium gives stainless steel its unique properties, including corrosion resistance. Stainless steel round bars are highly resistant to rust and staining, making them suitable for applications in environments exposed to moisture and chemicals. They are commonly used in industries such as food processing, medical equipment, and marine applications. Due to the chromium content, stainless steel round bars are generally more expensive than carbon steel round bars. However, the added cost is justified by their superior corrosion resistance and aesthetic appeal. Stainless steel also offers different grades and finishes, allowing for customization based on specific requirements. In summary, the main difference between carbon steel and stainless steel round bars lies in their composition and properties. Carbon steel is strong and affordable, while stainless steel offers corrosion resistance and comes in various grades and finishes. The choice between the two depends on the specific application and the desired properties required for the project.

Q: What are the different types of finishes available for steel round bars?: There are several types of finishes available for steel round bars, including hot rolled, cold drawn, turned and polished, and coated finishes. Each finish has its own unique characteristics and is suitable for specific applications.

Q: What are the different types of steel round bars used in the manufacturing of gears?: There are several types of steel round bars commonly used in the manufacturing of gears. Some of the most common ones include alloy steel round bars, carbon steel round bars, stainless steel round bars, and tool steel round bars. These steel round bars offer different properties and characteristics that are suitable for various gear applications, such as high strength, durability, wear resistance, and corrosion resistance. The specific type of steel round bar used depends on the specific requirements of the gear and the operating conditions it will be subjected to.

Q: How can steel round bars be protected against rust?: There are various ways to protect steel round bars from rust. One popular method involves applying a protective coating, like paint or a rust-resistant primer, which acts as a barrier between the steel and its surroundings, preventing moisture and oxygen from reaching the metal surface. Another effective approach is to galvanize the steel by immersing it in molten zinc. This creates a sacrificial barrier that shields the steel, even if it gets scratched or damaged. Maintaining the steel round bars is crucial in preventing rust. This involves keeping them clean and dry, as moisture is a major catalyst for rust formation. Regular inspections for rust or damage and prompt repairs are also important to prevent further corrosion. Storing the bars in a dry and well-ventilated area can help reduce the risk of rust. Elevating the bars off the ground or using moisture-absorbing materials, like silica gel packets, can provide additional protection against moisture buildup. Lastly, using corrosion inhibitors or rust-preventative oils can create a thin film on the surface that inhibits rust formation. By implementing these methods, steel round bars can be effectively shielded from rust, ensuring their durability and structural integrity.

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