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 do you determine the strength of a steel round bar?: The strength of a steel round bar can be determined through various methods, but the most common approach is by conducting a tensile test. This test involves applying a controlled force to the bar until it fractures, allowing for the measurement of its ultimate tensile strength (UTS). Other important parameters, such as yield strength, elongation, and reduction in area, can also be determined from the test results. Additionally, the chemical composition and microstructure of the steel can provide valuable insights into its overall strength and performance characteristics.

Q: What are the different tolerances for steel round bars?: The different tolerances for steel round bars depend on various factors such as the diameter, length, and intended application. Common tolerances for steel round bars include diameter tolerances ranging from +/- 0.005 inches to +/- 0.030 inches, length tolerances ranging from +/- 0.125 inches to +/- 0.500 inches, and straightness tolerances ranging from 0.0125 inches per foot to 0.030 inches per foot. However, specific tolerances may vary depending on the specific requirements set by the industry or customer.

Q: What are the different grades of stainless steel round bars?: There are several grades of stainless steel round bars, with the most common ones being 304, 316, and 410. These grades differ in their chemical composition, strength, and corrosion resistance properties, making them suitable for various applications in different industries.

Q: Can steel round bars be used in the production of construction materials?: Indeed, the utilization of steel round bars is feasible in the manufacturing of construction materials. Owing to their remarkable robustness and endurance, steel round bars find frequent application within the construction sector. These bars are instrumental in fortifying concrete structures, exemplified by the reinforcement of beams, columns, and slabs, thereby enhancing their resilience and steadfastness. Furthermore, in the construction of buildings and bridges, steel round bars can be employed in the creation of steel frames, trusses, and various structural constituents. The widespread popularity of these bars stems from their adaptability and capacity to endure substantial burdens in the construction industry.

Q: What are the tolerances for steel round bars?: The tolerances of steel round bars can differ based on the specific requirements of the application and manufacturing process. Generally, steel round bars have specified tolerances for diameter, straightness, and length. For diameter tolerance, it is usual to find tolerances ranging from +/- 0.001 inches to +/- 0.005 inches. This means that the actual diameter of the steel round bar can deviate within this range from the specified diameter. The size and grade of the bar determine the specific tolerance. Straightness tolerance refers to the permissible deviation in the straightness of the bar. Typically, it is specified as a maximum deviation per unit length, such as 0.125 inches per foot. This ensures that the bar remains straight and within acceptable limits when measured along its length. Length tolerance determines the allowable variation in the overall length of the round bar. It can range from +/- 0.125 inches to +/- 0.5 inches, depending on the size and grade of the bar. This ensures that the bar meets the required length specifications. It is important to note that these tolerances can vary based on industry standards, customer specifications, and the manufacturing method employed. Moreover, certain applications may have stricter tolerance requirements, particularly in industries like aerospace or automotive where precision is crucial. To summarize, the tolerances for steel round bars encompass diameter, straightness, and length. The specific tolerances depend on the size, grade, and application of the round bar, as well as any relevant industry standards or customer specifications.

Q: What are the tolerance levels for steel round bars?: Tolerance levels for steel round bars vary depending on the specific application and industry standards. Steel round bars are typically produced with tight dimensional tolerances to ensure their precise diameter, straightness, and surface finish. Common tolerance levels for steel round bars include diameter tolerances, straightness tolerances, and surface finish tolerances. Diameter tolerances specify the acceptable range of deviation from the nominal diameter of the round bar. This tolerance is usually expressed as a plus or minus value, such as +/- 0.005 inches. The specific tolerance will depend on the size and type of steel round bar being produced, as well as the requirements of the application. Straightness tolerances refer to the allowable amount of deviation from a perfectly straight line along the length of the round bar. This tolerance is typically expressed in terms of the maximum distance between the round bar and a straight edge placed along its length. For example, 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 in terms of roughness average (Ra) or roughness peak (Rz) values. The specific tolerance will depend on the desired surface finish and the application requirements. It is important to note that tolerance levels may also be subject to industry-specific standards, such as those set 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: Are steel round bars susceptible to corrosion?: Yes, steel round bars are susceptible to corrosion.

Q: How can steel round bars be protected from corrosion?: Steel round bars can be protected from corrosion through various methods. One of the most common ways is by applying a protective coating such as paint or enamel. This coating acts as a barrier between the steel and the corrosive elements in the environment, preventing direct contact and reducing the chances of corrosion. Another effective method is through the use of galvanization. This involves coating the steel round bars with a layer of zinc. Zinc is a sacrificial metal, which means it corrodes more easily than steel. So, when the round bars are exposed to moisture or other corrosive substances, the zinc coating will corrode instead of the steel, providing an added layer of protection. Using stainless steel round bars is also a great way to prevent corrosion. Stainless steel contains a significant amount of chromium, which forms a passive layer on the surface of the steel. This passive layer acts as a shield, protecting the steel from corrosion caused by moisture or other corrosive agents. Regular maintenance and cleaning of the steel round bars is crucial in preventing corrosion. Removing dirt, dust, and other contaminants from the surface helps to maintain the protective coating or passive layer, if present. Additionally, keeping the round bars dry and storing them in a well-ventilated area can also help prevent corrosion. Lastly, proper handling and storage of steel round bars are important. They should be stored in a dry and covered area to prevent exposure to moisture and corrosive elements. Avoiding contact with other metals or materials that can cause galvanic corrosion is also essential. By implementing these protective measures, steel round bars can be effectively shielded from corrosion, ensuring their longevity and structural integrity.

Q: Can steel round bars be used in structural applications?: Yes, steel round bars can be used in structural applications. Steel round bars are commonly used in construction and engineering projects where strength and durability are important. They are versatile and can be used for various structural elements such as beams, columns, and supports. Steel round bars have excellent mechanical properties, including high tensile strength and good ductility, making them suitable for withstanding heavy loads and resisting deformation. Additionally, steel round bars can be easily joined or connected to other structural components, making them a popular choice in the construction industry.

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.

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