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: How are steel round bars used in the construction of pipelines?: Steel round bars are commonly used in the construction of pipelines due to their high strength and durability. These bars are typically made from carbon or alloy steel and are available in various sizes and grades to suit the specific requirements of the pipeline. One of the key uses of steel round bars in pipeline construction is for reinforcement. They are often used as reinforcement in concrete foundations and supports along the pipeline route. The bars provide added strength and stability to the structure, ensuring that the pipeline remains secure and can withstand external forces such as soil movement or seismic activity. Additionally, steel round bars are also used as the main material for the fabrication of pipeline joints. These bars are typically bent or welded to form various shapes and sizes to connect different sections of the pipeline. The high tensile strength of steel ensures that the joints can withstand the pressure and stress exerted by the fluids being transported through the pipeline. Moreover, steel round bars are utilized in the construction of pipeline hangers and supports. These bars are often shaped and welded to form brackets or clamps that hold the pipeline in place. The bars provide a sturdy and reliable support system, preventing sagging or movement of the pipeline, and ensuring smooth and uninterrupted flow. In summary, steel round bars play a crucial role in the construction of pipelines. They are used for reinforcement, fabrication of pipeline joints, and the construction of hangers and supports. Their high strength, durability, and versatility make them an ideal choice for ensuring the structural integrity and reliability of pipelines.

Q: What are the different heat treatment processes for steel round bars?: There are several different heat treatment processes that can be used for steel round bars to enhance their mechanical properties and improve their overall performance. 1. Annealing: This process involves heating the steel round bars to a high temperature and then slowly cooling them, typically in a furnace. Annealing helps to relieve internal stresses, improve ductility, and refine the grain structure of the steel. 2. Normalizing: Normalizing is a heat treatment process that involves heating the steel round bars to a temperature above the critical range, followed by air cooling. This process helps to refine the grain structure, improve machinability, and enhance the mechanical properties of the steel. 3. Quenching and tempering: Quenching is a rapid cooling process that involves immersing the heated steel round bars into a quenching medium, such as oil or water, to rapidly cool them. This process results in the formation of a hard and brittle structure called martensite. To reduce the brittleness and improve the toughness of the steel, tempering is performed by reheating the quenched steel to a specific temperature and then cooling it. This process helps to improve the overall strength, hardness, and toughness of the steel. 4. Stress-relieving: Stress-relieving is a process that involves heating the steel round bars to a specific temperature below the critical range and holding it at that temperature for a certain period of time. This process helps to reduce residual stresses that may have developed during previous manufacturing processes, such as machining or welding. Stress-relieving improves the dimensional stability and reduces the risk of distortion or cracking in the steel round bars. 5. Induction hardening: Induction hardening is a specialized heat treatment process that involves selectively heating the surface of the steel round bars using high-frequency induction currents. This process quickly raises the temperature of the surface to a point where it can be hardened by quenching. Induction hardening is commonly used to increase the wear resistance and hardness of the surface while maintaining the toughness and ductility of the core of the steel round bars. These are some of the most common heat treatment processes used for steel round bars. The selection of the appropriate heat treatment process depends on the desired mechanical properties, intended application, and specific requirements of the steel round bars.

Q: Can steel round bars be threaded or machined?: Yes, steel round bars can be threaded or machined.

Q: What are the typical hardness values for different grades of steel round bars?: The typical hardness values for different grades of steel round bars can vary depending on the specific grade and manufacturing process. However, common ranges for hardness values in steel round bars can be between 200 and 400 on the Brinell hardness scale.

Q: Can steel round bars be used for hydraulic applications?: Indeed, hydraulic applications do permit the use of steel round bars. Renowned for its robustness and endurance, steel proves a fitting substance for hydraulic systems demanding intense pressure and substantial burdens. Steel round bars facilitate the production of diverse hydraulic constituents, including cylinders, pistons, shafts, and valves. Moreover, steel's sturdiness and resistance to corrosion render it an unwavering option for hydraulic applications wherein the fluid may harbor impurities or undergo elevated temperatures. Nonetheless, it remains crucial to ponder over the specific prerequisites of the hydraulic application and meticulously choose the grade and type of steel round bars to ensure supreme performance and longevity.

Q: Are steel round bars suitable for welding?: Certainly! Welding can be done with steel round bars, as they possess exceptional strength and durability. These bars are frequently utilized in welding applications due to their excellent properties. One can easily employ a variety of welding techniques, including MIG, TIG, or stick welding, to weld steel round bars. However, it is vital to carefully select the appropriate welding method and consumables based on the specific grade and alloy composition of the bar to ensure a successful weld. To achieve reliable and robust welds, proper surface preparation and cleaning are of utmost importance. All in all, steel round bars are a favored choice for welding projects due to their versatility and ability to endure high temperatures and stress.

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.

Q: What are the environmental considerations of steel round bars?: Steel round bars have several environmental considerations. Firstly, the production of steel requires a significant amount of energy, which often comes from non-renewable sources, leading to greenhouse gas emissions and contributing to climate change. Additionally, the extraction and processing of raw materials for steel production, such as iron ore and coal, can have detrimental effects on local ecosystems and habitats. Furthermore, the transportation of steel round bars can result in carbon emissions if not done efficiently. However, steel is a highly recyclable material, and the use of recycled steel in the production of round bars can help reduce environmental impact. Additionally, the durability and strength of steel make it a long-lasting material, leading to less waste in the long run.

Q: What are the advantages of using weather-resistant steel round bars?: Weather-resistant steel round bars have several advantages. Firstly, they have a higher resistance to corrosion compared to regular steel, making them ideal for outdoor applications or environments with high humidity or exposure to saltwater. Secondly, they have excellent strength and durability, allowing them to withstand harsh weather conditions, such as extreme temperatures, heavy rains, and strong winds. Additionally, these round bars require minimal maintenance, saving time and money in the long run. Overall, weather-resistant steel round bars provide enhanced longevity and performance, making them a reliable choice for various construction and industrial purposes.

Q: What are the different types of steel round bars used in the manufacturing of shafts?: There are several different types of steel round bars that are commonly used in the manufacturing of shafts. The choice of steel round bar depends on the specific requirements and application of the shaft. Here are some of the most commonly used types: 1. Carbon Steel Round Bars: These are the most common type of steel round bars used in shaft manufacturing. Carbon steel offers good strength and toughness, making it suitable for various shaft applications. 2. Alloy Steel Round Bars: Alloy steel round bars are made by adding other elements such as chromium, nickel, or molybdenum to carbon steel. This enhances the strength, hardness, and wear resistance of the shaft, making it suitable for demanding applications. 3. Stainless Steel Round Bars: Stainless steel is highly corrosion resistant and offers excellent mechanical properties. It is commonly used in shafts that require resistance to corrosion, high temperatures, or harsh environments. 4. Tool Steel Round Bars: Tool steel round bars are known for their exceptional hardness, toughness, and wear resistance. They are used in shafts for cutting tools, molds, and dies that require high performance and durability. 5. High-Speed Steel Round Bars: High-speed steel round bars are primarily used in shafts for cutting tools such as drills, mills, and taps. They have excellent heat resistance and can withstand high cutting speeds without losing their hardness. 6. Mild Steel Round Bars: Mild steel round bars are low carbon steel bars that offer good weldability and machinability. They are commonly used in shafts for less demanding applications that do not require high strength or hardness. It is important to consider the specific requirements, such as strength, hardness, corrosion resistance, and temperature resistance, when selecting the appropriate type of steel round bar for manufacturing shafts.

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