AISI 5140 Alloy Steel Round Bars System 1

AISI 5140 Alloy Steel Round Bars System 2

AISI 5140 Alloy Steel Round Bars System 3

AISI 5140 Alloy Steel Round Bars

Ref Price:

Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 120000 m.t./month

Inquire Now

Customer Service

Add to My Favorites

OKorder Service Pledge

Quality Product, Order Online Tracking, Timely Delivery

OKorder Financial Service

Credit Rating, Credit Services, Credit Purchasing

Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.37-0.44 %	Tensile strength(MPA)	≥980(100)
Si	0.17-0.37 %	Yield strength (MPA)	≥785(80)
Mn	0.50-0.80 %	Elongation (δ5/%)	≥9
Cr	0.80-1.10 %	Reduction in Area (ψ/%)	≥45
Ni	≤0.30 %	Impact (J)	≥ 47
P	≤0.035 %	Impact toughness value αkv (J/cm2)	≥59(6)
S	≤0.035 %	Hardness	≤207HB
Cu	≤0.030 %

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 outdoor applications?: Indeed, outdoor applications can make use of steel round bars. Steel, being a robust and long-lasting material, possesses corrosion resistance, thus rendering it suitable for outdoor purposes. Construction, manufacturing, and infrastructure projects frequently employ round bars to offer structural support and reinforcement. Furthermore, steel round bars exhibit the ability to withstand diverse weather conditions, such as rain, snow, and extreme temperatures, while retaining their strength and integrity. Nevertheless, it is crucial to carefully choose the most suitable type of steel for the specific outdoor application to guarantee optimal performance and longevity.

Q:What is the hardness of a steel round bar?: The hardness of a steel round bar can vary depending on the specific type of steel and the manufacturing process used. Steel is typically measured for hardness using the Rockwell hardness scale, which measures the depth of indentation caused by a specific load on a diamond or steel ball. Common hardness values for steel round bars can range from around 20 to 60 Rockwell C (HRC), with higher numbers indicating a harder material. However, it is important to note that the hardness of a steel round bar can also be influenced by factors such as heat treatment, alloying elements, and any surface treatments applied. Therefore, it is essential to consult the specific hardness specifications provided by the manufacturer or supplier to accurately determine the hardness of a steel round bar.

Q:What are the advantages of using nitriding steel round bars?: There are several advantages of using nitriding steel round bars. Firstly, nitriding steel round bars have a high surface hardness, which makes them resistant to wear, abrasion, and scratching. This makes them ideal for applications where the material needs to withstand harsh conditions and maintain its integrity over time. Additionally, nitriding steel round bars have improved fatigue and impact strength, making them suitable for heavy-duty applications. They also exhibit good heat resistance and can withstand high temperatures without losing their mechanical properties. Moreover, nitriding steel round bars have excellent corrosion resistance, reducing the need for frequent maintenance and replacement. Overall, the use of nitriding steel round bars offers enhanced durability, strength, and reliability, making them a preferred choice in various industries.

Q:What is the difference between a rough turned and a precision ground steel round bar?: A rough turned steel round bar refers to a steel bar that has undergone a rough machining process to remove excess material and bring the bar to a closer approximation of its final dimensions. This process typically involves removing the outer layer of the bar through turning or other machining methods. However, the bar is not yet finished to precise tolerances and may still have slight variations in diameter or surface roughness. On the other hand, a precision ground steel round bar has undergone a secondary machining process known as grinding. Grinding is a more precise and controlled method of removing material from the surface of the bar. It involves using a grinding wheel or abrasive tool to carefully remove small amounts of material, resulting in a bar with highly precise dimensions and a smoother surface finish. Precision ground bars are typically made to meet specific tolerances and have a more consistent diameter, surface finish, and straightness compared to rough turned bars. The main difference between a rough turned and a precision ground steel round bar is the level of precision and surface finish achieved. Rough turned bars are suitable for applications where tight tolerances and surface finish are not critical, such as in certain structural or machinery components. Precision ground bars, on the other hand, are preferred when precise dimensions, tight tolerances, and a smooth surface finish are required, such as in precision machining applications or where the bar will be used as a shaft or component in critical machinery or equipment.

Q:What is the difference between a bright and a rough turned steel round bar?: The primary differences between a bright turned steel round bar and a rough turned steel round bar lie in their surface finishes and the precision involved in their manufacturing processes. A bright turned steel round bar boasts a sleek and shiny surface finish. This is achieved by subjecting the bar to supplementary processes such as polishing or grinding after the initial turning operation. The bright surface finish not only enhances the bar's aesthetic appeal but also provides improved resistance against corrosion. Conversely, a rough turned steel round bar exhibits a more textured surface finish. It is typically obtained directly from the turning operation without any additional refining processes. The rough surface finish may display visible tool marks and a slightly uneven texture. Regarding manufacturing precision, a bright turned steel round bar tends to be more accurate and precise in terms of its dimensions and tolerances. The additional processes involved in attaining a bright surface finish also enable tighter control over the bar's specifications. As a result, bright turned bars are suitable for applications where precise dimensions and tolerances are crucial. In contrast, a rough turned steel round bar may have slightly looser tolerances due to the nature of the turning process and the absence of further refining operations. Nevertheless, rough turned bars can still meet the requirements of many applications that do not necessitate high precision. Ultimately, the choice between a bright turned steel round bar and a rough turned steel round bar hinges on the specific application and the desired surface finish and precision.

Q:Are the bolts for the round bar or round steel?: The utility model relates to a pair of bolts which are used for drawing between the inner and the outer formwork of the wall when the beam and the column template are set. The bolt under concrete lateral pressure and other loads, ensure the spacing inside and outside the template can meet the design requirements, but also the template and its support structure fulcrum, so the impact on the overall arrangement of bolt, the template structure stiffness and strength greatly.

Q:How are steel round bars used in the automotive industry?: Steel round bars are commonly used in the automotive industry for various applications such as manufacturing of axles, drive shafts, suspension components, and steering systems. These bars provide high strength and durability, allowing them to withstand the heavy loads and harsh operating conditions of vehicles. Additionally, steel round bars can be machined and formed into desired shapes, making them versatile and suitable for different automotive parts.

Q:Can steel round bars be used in high-temperature environments?: Yes, steel round bars can be used in high-temperature environments. However, the specific type of steel and its composition need to be carefully chosen to ensure it has the necessary heat resistance properties, such as high melting point and good strength retention at elevated temperatures.

Q:How do you prevent steel round bars from rusting?: To prevent rusting of steel round bars, there are several effective methods at your disposal: 1. Employ a protective coating: One effective way to prevent rust on steel round bars is to apply a protective coating. This can be accomplished through the use of paint, epoxy, or other coatings that are resistant to corrosion. The coating acts as a barrier between the steel and moisture, thus preventing oxidation and the formation of rust. 2. Ensure dryness of the bars: Moisture is a key factor in the formation of rust. Therefore, it is crucial to keep the steel round bars dry at all times. Store them in a dry area, away from water or humidity. If the bars come into contact with water, be sure to thoroughly dry them to prevent any residual moisture from causing rust. 3. Implement proper ventilation: Adequate ventilation is essential for reducing moisture levels in the air, thereby preventing rust. Make sure that the storage area or facility where the steel round bars are kept has good airflow and is well-ventilated. This will minimize the accumulation of moisture and the formation of rust. 4. Utilize corrosion inhibitors: Corrosion inhibitors are chemical compounds that can be applied to the surface of steel round bars to prevent rust. These inhibitors work by creating a protective layer on the steel, inhibiting the oxidation process. There are various types of corrosion inhibitors available, so choose the one that fits your specific needs. 5. Regularly maintain and inspect: Routinely inspect the steel round bars for any signs of rust or damage. If any rust spots are detected, promptly remove them using a wire brush or sandpaper, and apply a fresh coat of protective coating. Additionally, ensure that the bars are stored in a clean and dry environment to minimize the risk of rust formation. By adhering to these preventive measures, you can significantly decrease the likelihood of rusting in steel round bars and extend their lifespan.

Q:Can steel round bars be used in the manufacturing of pressure vessels?: Yes, steel round bars can be used in the manufacturing of pressure vessels. Steel round bars offer high strength and durability, making them suitable for withstanding the high pressure environment inside pressure vessels. Additionally, steel round bars can be easily fabricated and welded, allowing for the construction of complex pressure vessel designs.

1. Manufacturer Overview
Location
Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates
a) Certification Name
Range
Reference
Validity Period

3. Manufacturer Capability
a)Trade Capacity
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range