Mould Steel Round Bar 1.2379

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 100000 m.t./month

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Mould Steel Round Bar 1.2379 / SAE 8620 Forging Round Steel Bar

Process: EAF+LF+VD+ Hot Forged+Turned(Optinal)+ Heat treatment (Optinal)

Chemical composition (%)

Grade	C	Si	Mn	P ≤	S ≤	Cr	Mo	V
Cr12Mo1V1	1.40-1.60	≤ 0.60	≤ 0.60	0.030	0.030	11.00-13.00	0.70-1.20	0.5-1.10

Production Specification

Material:	forged mould steel round bar
Diameter:	250mm-800mm
Length:	2000mm-12000mm Straightness: 3mm/M max; square bar.150-800mm, blocks sizes up to 800*800mm
Process:	EAF + LF + VD +(ESR) + Forged + Heat Treatment (optional)
Delivery condition:	Hot forged +Rough machined (black surface after Q/T)+ Turned (optional)
Delivery Time:	30 days
MOQ:	20 tons
Heat treatment:	Normalized / Annealed / Quenched / tempered
Forged ratio:	no less than 3:1
Technical Data:	According to the customer's requirement of Chemical Composition, Physical Properties and Mechanical Testing; mould steel round bar available for test
Test:	Ultrasonic test according to SEP 1921-84 G3 C/c
Certificate of Quality	issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness), forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the Certificate of Quality
Marking:	Grade, heat NO. length will be stamped one each bar with required color
Payment:	30% advance by T\T; Balance pay before the shipment against shipping documents or irrevocable LC at sight
Application:	Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.

Mould Steel Round Bar 1.2379

Q: What is the difference between a cold-drawn and a centerless ground steel round bar?: Both cold-drawn and centerless ground steel round bars are distinct types of steel bars that have undergone different manufacturing processes, leading to varied characteristics and properties. To produce cold-drawn steel round bars, a hot-rolled or annealed steel bar is pulled through a die, decreasing its diameter and increasing its length. This procedure enhances the steel's mechanical properties, making it stronger, more precise in dimensions, and possessing a smoother surface finish. Cold-drawn bars exhibit superior tensile strength, improved surface finish, and tighter dimensional tolerances compared to hot-rolled bars. They are frequently employed in applications that necessitate precision and strength, such as automotive components, machinery parts, and construction materials. On the contrary, centerless ground steel round bars are created by passing a cylindrical steel bar through a grinding machine without the need for centers or support. This grinding process eliminates surface imperfections and deviations in diameter, resulting in a precise and smooth finish. Centerless ground bars offer exceptional dimensional accuracy, surface finish, and roundness. They are commonly utilized in applications where precision and tight tolerances are crucial, such as in the production of bearings, shafts, and hydraulic cylinders. In conclusion, the primary distinction between a cold-drawn steel round bar and a centerless ground steel round bar lies in the manufacturing process and the resultant properties. Cold-drawn bars are formed by pulling the steel through a die, leading to enhanced mechanical properties, tighter tolerances, and a smoother surface finish. Centerless ground bars are produced by grinding the steel to enhance dimensional accuracy, roundness, and surface finish. Both types of bars possess their own advantages and are suitable for different applications based on the required precision, strength, and surface finish.

Q: Can steel round bars be used for pump shaft applications?: Indeed, pump shaft applications can make effective use of steel round bars. The prevalence of steel round bars in pump shafts can be attributed to their exceptional strength, durability, and resistance against corrosion. Considering the high torsional loads pump shafts face and the necessity to endure the strains of rotating machinery, steel round bars provide the essential mechanical attributes to withstand these circumstances, rendering them an apt selection for pump shaft applications. Moreover, the adaptability of steel permits diverse heat treatments and surface finishes to amplify its efficiency and longevity in pump shafts.

Q: Can steel round bars be extruded?: Steel round bars cannot be extruded; instead, they are typically produced through a different process called hot rolling. In hot rolling, a cylindrical billet is heated and passed through a series of rollers to achieve the desired diameter and length. Extrusion, on the other hand, is a manufacturing process that involves forcing material through a die to create specific shapes or profiles. While steel can be extruded into various shapes such as tubes, channels, or angles, round bars are not typically produced in this way.

Q: Can steel round bars be used for drive shaft applications?: Yes, steel round bars can be used for drive shaft applications. Drive shafts are responsible for transmitting torque and rotational motion from the engine to the wheels or other components in various mechanical systems such as automobiles, industrial machinery, and even boats. Steel round bars possess excellent mechanical properties, including high strength, durability, and toughness, which are crucial for withstanding the stresses and loads imposed during operation. They also exhibit good fatigue resistance, allowing them to endure repeated loading cycles without failure. Furthermore, steel round bars can be accurately machined to meet the required dimensions and tolerances for drive shaft applications. They can be heat-treated to enhance their strength and hardness or surface treated to improve corrosion resistance if necessary. Overall, steel round bars are a popular choice for drive shaft applications due to their combination of strength, durability, and machinability, making them well-suited for transmitting power efficiently and reliably in various mechanical systems.

Q: What is the maximum hardness achievable for steel round bars?: The maximum hardness achievable for steel round bars depends on various factors such as the composition of the steel, the heat treatment process, and the desired properties for the specific application. Generally, steel can achieve a maximum hardness of around 65 HRC (Rockwell Hardness Scale C) or higher. This level of hardness is typically obtained through processes like quenching and tempering. Quenching involves rapidly cooling the steel from a high temperature to room temperature, which results in a hardened structure. Tempering is then performed to reduce the brittleness and improve the toughness of the steel while maintaining a high level of hardness. It's important to note that increasing the hardness of steel beyond a certain point may lead to reduced toughness and increased brittleness. Therefore, the maximum achievable hardness should be balanced with the desired properties for the specific application, such as strength, ductility, and resistance to wear or impact.

Q: What are the advantages of using manganese-alloy steel round bars?: There are several advantages of using manganese-alloy steel round bars in various applications. Firstly, manganese-alloy steel round bars offer excellent strength and toughness. The addition of manganese to the alloy enhances the hardness and durability of the steel, making it suitable for high-stress applications. This makes it an ideal choice for industries such as construction, mining, and manufacturing. Secondly, manganese-alloy steel round bars have excellent wear resistance properties. The presence of manganese in the alloy significantly improves the steel's ability to resist wear, abrasion, and impact. This makes it a preferred choice for components that are subject to heavy usage and constant friction, such as gears, shafts, and axles. Additionally, manganese-alloy steel round bars exhibit good machinability. They can be easily shaped, cut, and formed into various shapes and sizes, which makes them versatile for different applications. This characteristic allows for efficient manufacturing processes and reduces production time and costs. Moreover, manganese-alloy steel round bars have excellent corrosion resistance. The presence of manganese in the alloy provides a protective layer that helps prevent the formation of rust and corrosion, even in harsh environments. This makes them suitable for applications where exposure to moisture, chemicals, or extreme temperatures is a concern. Lastly, manganese-alloy steel round bars offer cost-effectiveness. Compared to other high-performance alloys, manganese-alloy steel is relatively more affordable while still providing many of the same benefits. This makes it a cost-effective choice for many industries looking for a durable and reliable material without breaking the bank. Overall, the advantages of using manganese-alloy steel round bars include superior strength, excellent wear resistance, good machinability, corrosion resistance, and cost-effectiveness. These qualities make them a popular choice in various industries where durability, reliability, and cost-efficiency are essential.

Q: Embedded bolts M24 why use M25 round steel?: Because M25 round steel machine processing, the direct use of M24 round steel accuracy is not guaranteed

Q: Can steel round bars be used for making axles?: Yes, steel round bars can be used for making axles. Steel round bars are commonly used in the manufacturing of axles due to their high strength and durability. The round shape of the bar provides structural integrity and allows for smooth rotation, making it suitable for axle applications. Additionally, steel has excellent mechanical properties, such as high tensile strength and impact resistance, which are crucial for axles to withstand heavy loads and harsh operating conditions. Overall, steel round bars are a reliable and commonly used material for making axles in various industries, including automotive, transportation, and heavy machinery.

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: Can steel round bars be coated with protective coatings?: Yes, steel round bars can be coated with protective coatings. These coatings serve as a barrier to protect the steel from corrosion, abrasion, and other forms of damage. The most common type of protective coating used on steel round bars is called a corrosion-resistant coating. This coating is typically applied through processes such as hot-dip galvanizing, electroplating, or powder coating. These coatings provide a layer of protection that prevents the steel from coming into contact with corrosive substances, moisture, and other environmental factors that may cause deterioration. Additionally, protective coatings can also enhance the appearance of the steel round bars and increase their lifespan.

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