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:What is the difference between a solid and a hollow steel round bar?: The main difference between a solid and a hollow steel round bar lies in their construction. A solid steel round bar is made entirely of solid steel material throughout its entire length. On the other hand, a hollow steel round bar has a hollow center, creating a tube-like structure. This design reduces the weight of the bar while maintaining its strength. Solid round bars are often used when high strength and durability are required, while hollow round bars are commonly used in applications where weight reduction is a priority, such as in construction or engineering projects.

Q:What is the difference between a solid and a hollow steel round bar?: A solid steel round bar is a cylindrical bar made entirely of solid steel material, meaning it is filled and does not have any hollow spaces inside. On the other hand, a hollow steel round bar is also cylindrical in shape but has a hollow center, meaning it has empty space or a void inside the bar. The main difference between a solid and a hollow steel round bar lies in their structural composition and the purposes they serve. A solid steel round bar is typically used in applications where strength and durability are of utmost importance. It is commonly used in construction, manufacturing, and engineering projects where load-bearing capacity is required. On the other hand, a hollow steel round bar is designed to be lighter in weight while still maintaining structural integrity. The hollow center allows for weight reduction while still providing sufficient strength for various applications. Hollow steel round bars are often used in industries such as aerospace, automotive, and marine, where weight reduction is critical for improved fuel efficiency and overall performance. Additionally, the hollow space inside a hollow steel round bar also provides an opportunity for customization. It can be used to house other components, such as wires or piping, allowing for a more streamlined and efficient design. This makes hollow steel round bars versatile and suitable for various applications that require both strength and weight reduction. In summary, the main difference between a solid and a hollow steel round bar lies in their structural composition and the purposes they serve. Solid steel round bars are used for applications that require maximum strength and durability, while hollow steel round bars offer weight reduction and customization options, making them suitable for applications that prioritize lightweight design without compromising structural integrity.

Q:What are the different mechanical properties of steel round bars?: The different mechanical properties of steel round bars include tensile strength, yield strength, elongation, hardness, and impact resistance. Tensile strength refers to the maximum amount of stress a material can withstand before breaking. Yield strength is the stress at which a material begins to deform permanently. Elongation measures the amount of deformation a material can undergo before breaking. Hardness determines the material's resistance to indentation or scratching. Impact resistance is the ability of a material to absorb energy during sudden impacts without breaking.

Q:What are the main differences between wrought round steel, hot rolled round steel and cold drawn round steel? Where are they used separately?: The main differences are in mechanical properties. I don't know very well how to make round steel, I can't compare it. Forged round steel is expected to be used in the processing of some special performance requirements.

Q:What is the difference between a cold-drawn and a polished steel round bar?: A cold-drawn steel round bar is typically produced by pulling a hot-rolled bar through a die, resulting in a smoother and more precise diameter. On the other hand, a polished steel round bar undergoes an additional process of grinding or buffing to achieve a smooth and shiny surface finish. While both bars offer improved surface quality, the cold-drawn bar primarily focuses on dimensional accuracy, while the polished bar enhances aesthetics and corrosion resistance.

Q:Can steel round bars be used for making turbine blades?: Using steel round bars to make turbine blades is not possible. Turbine blades experience high temperatures and extreme forces, so they need to be durable and flexible. Steel round bars do not have the required properties to endure these conditions. Usually, turbine blades are constructed from materials like titanium alloys or advanced composites, which have a high strength-to-weight ratio, exceptional fatigue resistance, and thermal stability. These materials are purposely designed to withstand the challenging conditions of turbine operations, ensuring efficiency and reliability.

Q:What are the different types of steel round bar profiles?: In the market, one can find various steel round bar profiles. Among the most commonly used profiles are: 1. Plain Round Bar: This profile is the most basic and widely used. It consists of a solid cylindrical bar with a smooth surface and a consistent diameter throughout its length. 2. Deformed Round Bar: This type of round bar features deformations or ribs on its surface. These deformations enhance the bond between the bar and concrete, making it ideal for construction applications requiring reinforced concrete structures. 3. Hollow Round Bar: As the name suggests, this profile has a hollow center. It is often utilized in industries where weight reduction is crucial or when the round bar needs to serve as a conduit for fluids or gases. 4. Threaded Round Bar: This profile is characterized by threads along its length, enabling easy screwing into other components. It is commonly employed in applications that require secure fastening or adjustability. 5. Half-Round Bar: With one flat side and one rounded side, this profile takes on a semi-circular shape. It is frequently used in decorative applications, such as handrails, where an aesthetically pleasing appearance is desired. 6. Square Bar: Although not strictly a round profile, square bars are often included in this category. They possess four equal sides and find common use in applications that demand higher torsional strength. 7. Hexagonal Bar: Similar to square bars, hexagonal bars have six equal sides. They are often employed in applications that require high torque resistance or when a distinctive appearance is desired. These represent just a few of the available steel round bar profiles. The selection of a profile depends on specific application requirements, such as structural strength, bonding capabilities, or aesthetic considerations.

Q:What is the difference between a hot rolled and a turned steel round bar?: The main difference between a hot rolled and a turned steel round bar lies in the manufacturing process and the resulting characteristics of the finished product. A hot rolled steel round bar is produced by heating a billet or ingot of steel to a high temperature and then rolling it into the desired shape. This process allows for the steel to be formed and shaped easily, resulting in a bar with a rough surface and a slightly rounded or irregular shape. Hot rolling also helps to improve the overall strength and toughness of the steel, making it suitable for a wide range of applications. On the other hand, a turned steel round bar is produced by machining a hot rolled or cold drawn bar on a lathe. This process involves removing material from the surface of the bar using cutting tools, resulting in a smooth and precise finish. Turning also allows for greater dimensional accuracy and control over the final shape and size of the bar. In terms of surface finish and dimensional accuracy, a turned steel round bar generally offers a higher level of precision compared to a hot rolled bar. The turned bar has a smoother surface with fewer imperfections, making it ideal for applications where appearance and aesthetics are important. Additionally, the turned bar typically has tighter tolerances, ensuring consistent dimensions throughout its length. The choice between a hot rolled and a turned steel round bar depends on the specific requirements of the application. Hot rolled bars are commonly used in construction, manufacturing, and general engineering applications where strength and toughness are crucial. Turned bars, on the other hand, are often used in industries such as automotive, aerospace, and precision machining, where a high level of surface finish and dimensional accuracy is required. In summary, the difference between a hot rolled and a turned steel round bar lies in the manufacturing process and the resulting characteristics. Hot rolled bars offer strength and toughness, while turned bars provide a smoother surface finish and greater dimensional accuracy. The choice depends on the specific needs of the application.

Q:What are the advantages of using nickel-iron alloy steel round bars?: There are several advantages to using nickel-iron alloy steel round bars. Firstly, nickel-iron alloy steel has excellent resistance to corrosion and oxidation. This makes it highly suitable for use in environments where exposure to moisture, chemicals, or high temperatures is expected. The corrosion resistance of this alloy ensures that the round bars will maintain their structural integrity and durability over time, reducing the need for frequent replacements or repairs. Secondly, nickel-iron alloy steel round bars have excellent mechanical properties. They possess high strength, toughness, and hardness, making them suitable for applications that require heavy-duty performance. These round bars can withstand significant stress and load, making them ideal for use in various industries such as construction, manufacturing, and engineering. Additionally, nickel-iron alloy steel offers good thermal stability and resistance to thermal expansion. This means that the round bars will maintain their shape and dimensions even when exposed to extreme temperatures, ensuring their reliability and performance in high-temperature applications. Furthermore, nickel-iron alloy steel has excellent magnetic properties. It exhibits high magnetic permeability, making it suitable for electromagnetic applications such as transformers, inductors, and magnetic shielding. This property enables the round bars to efficiently conduct and distribute magnetic fields, enhancing the performance of these devices. Lastly, the versatility of nickel-iron alloy steel allows for various manufacturing processes and customization options. It can be easily machined, welded, and formed into different shapes and sizes, providing flexibility in design and application. This adaptability makes nickel-iron alloy steel round bars a preferred choice in many industries. In conclusion, the advantages of using nickel-iron alloy steel round bars lie in their corrosion resistance, excellent mechanical properties, thermal stability, magnetic properties, and versatility. These qualities make them reliable, durable, and suitable for a wide range of applications, ensuring optimal performance and longevity.

Q:How do you calculate the bending stress in a steel round bar?: The bending stress in a steel round bar can be calculated using the formula: Bending Stress = (Moment * Radius) / (Section Modulus). The moment is calculated by multiplying the applied force by the distance from the force to the center of the bar. The radius is the radius of the round bar, and the section modulus is a property of the bar's cross-sectional shape that indicates its resistance to bending.

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