S20C-B/S45C-B Steel Round Bar

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 5 m.t.

Supply Capability:: 100000 m.t./month

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Specifications

1. 2080
1. cold work mould/die steel
2. High carbon high chromium type ledeburite
3. High hardness wear resistance

Product description

1. Cr12 steel is a widely used cold work die steel, a type of high carbon high chromium ledeburite . The steel has good hardenability and good abrasion resistance

2. Mainly used to with stand the impact load is smaller, and require high abrasion resistance Die and punch, cold-cut scissors, drill sets, gauges, drawing die, pressure die thread rolling board, drawing die thread rolling die.

Chemical composition(for reference only)

1.2080 Cold work die steel round bar

Delivery of hardness and quenching hardness

Steel name	Delivery status		Quenched specimens
Steel name	Hardness HBW	Impressiondiameter (mm)	Quenching temperature/°C	Cooling medium	hardness ≥HRC
Cr12	269~217	3.7~4.1	950~1000	oil	60

Physical properties

Cr12 critical temperature

Critical point	Ac1	Acm	Ar1	Arcm	Ms
temperature(approximation)/°C	810	835	755	770	180

Cr12 Hot Working Technology

Item	Heating temperature/°C	start forging temperature/°C	final forging temperature/°C	type of cooling
Steel ingot	1140~1160	1100~1120	900~920	Slow cooling
Steel billet	1120~1140	1080~1100	880~920	Slow cooling

Cr12 heat treatment

between the quenching temperature and the hardness of the relationship

quenching temperature/°C	875	900	925	950	975	1000	1050	1100
Hardness HRC	54.5	57	60	62.5	65	66	64	59.5

Delivery status: steel delivered in the annealed condition

We are professional manufacture of tool steel. We can provide various kinds of tool steel and mould steel. If you have any question regarding our products ,please feel free to let us know. We assure you will receive our best attention to your enquiry.

Products

S20C-B/S45C-B Steel Round Bar

Q:How do you prevent steel round bars from rusting during transportation?: To prevent steel round bars from rusting during transportation, there are several effective measures that can be taken. 1. Proper packaging: The first step is to ensure that the steel round bars are properly packaged. They should be securely wrapped and sealed in a moisture-resistant packaging material such as plastic or shrink wrap. This will create a barrier against moisture and prevent direct contact with air. 2. Desiccants: Including desiccants, such as silica gel packets or moisture-absorbing clay, inside the packaging can help in absorbing any moisture that may be present. These desiccants will help to maintain a dry environment around the steel bars, reducing the chances of rust formation. 3. VCI (Volatile Corrosion Inhibitor) packaging: VCI packaging is an effective method to prevent rust during transportation. VCI materials release a protective vapor that forms a thin protective layer on the steel surface, inhibiting corrosion. VCI films or papers can be used to wrap the steel round bars, providing a long-lasting rust protection. 4. Proper storage conditions: During transportation, it is important to store the steel round bars in a dry and well-ventilated environment. Avoid exposing them to rain, humidity, or extreme temperature fluctuations. If possible, store them in a covered and climate-controlled area to minimize the risk of rust formation. 5. Regular inspection and maintenance: Regularly inspect the steel round bars during transportation to ensure that the packaging remains intact and no moisture has seeped in. If any damage or signs of moisture are detected, immediate action should be taken to rectify the issue and prevent rust from spreading. By implementing these preventive measures, the risk of rust formation on steel round bars during transportation can be significantly reduced, ensuring that they reach their destination in optimal condition.

Q:How do you calculate the maximum allowable stress for a steel round bar?: To calculate the maximum allowable stress for a steel round bar, several factors need to be taken into consideration. The maximum allowable stress represents the maximum amount of stress that the material can withstand before it starts to deform or fail. 1. Determine the material properties: Steel round bars come in various grades, each with their own unique material properties. These properties include the ultimate tensile strength (UTS), yield strength, and elongation percentage. These values can typically be found in material specification documents or reference books. 2. Identify the design factor: The design factor, also known as the safety factor or factor of safety, is a multiplier applied to the maximum stress to ensure the structure or component is safe and can handle unexpected or dynamic loads. The design factor can vary depending on the application and industry standards. Common values are between 1.5 and 4. 3. Calculate the allowable stress: The allowable stress is calculated by dividing the yield strength of the material by the design factor. This ensures that the structure or component operates within a safe stress range. The formula can be expressed as: Allowable Stress = Yield Strength / Design Factor. For example, if a steel round bar has a yield strength of 300 MPa and a design factor of 2, the maximum allowable stress would be 150 MPa (300 MPa / 2). This means that the steel round bar can safely withstand a maximum stress of 150 MPa before the risk of deformation or failure. It is important to note that the maximum allowable stress is just one aspect of designing a structure or component. Other factors such as fatigue, environmental conditions, and load distribution should also be taken into account to ensure a safe and reliable design. Consulting relevant engineering codes, standards, and professional guidance is highly recommended when calculating the maximum allowable stress for a specific application.

Q:Can steel round bars be used for making punches and dies?: Certainly! Punches and dies can indeed be fashioned from steel round bars. In the realm of tool and die fabrication, steel round bars are frequently employed owing to their robustness and durability. These bars can be skillfully machined or forged into the desired configuration, subsequently bolstered to guarantee extended longevity and fortitude against wear and distortion. The commendable hardness and tenacity of steel round bars render them optimal for withstanding the formidable forces and pressures entailed in the act of punching and shaping diverse materials. Moreover, steel round bars are easily obtainable in an assortment of dimensions and grades, rendering them a judicious and cost-efficient option for producing punches and dies.

Q:Can steel round bars be used in the aerospace industry?: Steel round bars have the capacity to be utilized in the aerospace industry. Steel is a versatile substance that finds application in diverse sectors, including aerospace. In the construction of aircraft components and structures, such as landing gears, engine parts, and structural supports, steel round bars are frequently employed. Steel possesses exceptional strength and durability, crucial attributes for guaranteeing aircraft safety and reliability in the aerospace field. Moreover, steel round bars can be customized and manipulated to meet the specific design and performance necessities of aerospace applications. In summary, steel round bars are an appropriate material selection for numerous aerospace applications owing to their mechanical properties, dependability, and cost-effectiveness.

Q:What are the advantages of using heat-treatable steel round bars?: There are several advantages of using heat-treatable steel round bars: 1. Increased strength: Heat-treatable steel round bars can be subjected to controlled heating and cooling processes, which enhances their strength and hardness. This makes them suitable for applications that require high strength and durability. 2. Improved wear resistance: Through heat treatment, the steel round bars can develop a hardened surface layer, which significantly improves their resistance to wear and abrasion. This makes them ideal for use in industries such as manufacturing, construction, and automotive, where components are subjected to heavy wear and tear. 3. Customizability: Heat-treatable steel round bars offer the advantage of being easily customizable to meet specific requirements. By adjusting the heat treatment process, the hardness, strength, and other mechanical properties of the bars can be tailored to suit different applications, ensuring optimal performance. 4. Machinability: Heat-treatable steel round bars typically have good machinability, which means they can be easily cut, drilled, or shaped into various forms without compromising their structural integrity. This makes them convenient to work with, reducing production time and costs. 5. Versatility: Heat-treatable steel round bars are highly versatile and find applications in a wide range of industries, including construction, manufacturing, oil and gas, automotive, and aerospace. They are commonly used in the production of shafts, gears, bolts, axles, and other critical components. 6. Cost-effectiveness: While heat-treatable steel round bars may have a higher initial cost compared to non-heat-treatable or lower-grade steels, their durability and enhanced properties make them cost-effective in the long run. The improved strength and wear resistance lead to longer service life, reducing the need for frequent replacements and maintenance. Overall, the advantages of using heat-treatable steel round bars include increased strength, improved wear resistance, customizability, good machinability, versatility, and cost-effectiveness. These benefits make them a preferred choice for demanding applications that require high-performance materials.

Q:Can steel round bars be used for making sway bars?: Certainly! Sway bars can indeed be crafted using steel round bars. These bars, also recognized as stabilizer bars or anti-roll bars, are implemented in automobiles to diminish body roll and enhance stability while maneuvering corners. The utilization of steel round bars is quite prevalent for this task owing to their remarkable robustness and endurance. The circular form facilitates the uniform dispersion of forces and furnishes crucial torsional stiffness necessary for sway bars to effectively govern body roll. Furthermore, steel is effortlessly obtainable, economical, and can be conveniently shaped and sized to cater to sway bar requirements.

Q:Requirements for groove welding of grade 22mm round steel and manual arc welding: If not on the lathe, in the groove on the round bar with gouging or cutting gun, docking form X type double sided bilateral docking, blunt edge 2mm root gap 2mm welding, welding side sincere one or two seam, flip the workpiece on the other side of a full weld groove, flip weld residual,

Q:What are the different types of steel round bar alloys used in the aerospace industry?: There are several different types of steel round bar alloys used in the aerospace industry, including stainless steel, titanium alloy, nickel alloy, and carbon steel. These alloys offer specific properties such as high strength, corrosion resistance, and heat resistance, making them suitable for various applications in aircraft manufacturing.

Q:What are the different machining processes used for steel round bars?: Steel round bars can be machined using various processes to achieve specific outcomes and meet project specifications. Some commonly employed machining processes for steel round bars include the following: 1. Turning: By rotating the round bar and utilizing a cutting tool, material is removed to create the desired shape or size. This method is often employed to decrease the diameter or produce precise cylindrical shapes. 2. Drilling: Holes are created in the steel round bar using a rotating cutting tool called a drill bit. This process is frequently used for installing bolts, screws, or other fasteners. 3. Milling: Material is removed from the surface of the steel round bar using a rotating cutting tool with multiple teeth. This method is employed to create flat surfaces, grooves, or intricate shapes. 4. Grinding: Abrasive particles are used to remove material from the steel round bar, resulting in a smooth surface finish and achieving specific tolerances. This process is commonly used to refine the surface or eliminate imperfections. 5. Thread rolling: External threads are created on the steel round bar by pressing a hardened steel die against the rotating bar, causing the material to flow and form the desired threads. 6. Cold drawing: The steel round bar is pulled through a die, reducing its diameter and enhancing its surface finish. This process is utilized to achieve precise dimensions and improve the mechanical properties of the bar. 7. Heat treatment: Although not a machining process itself, heat treatment is often combined with machining to enhance the properties of the steel round bar. Processes like annealing, quenching, and tempering can improve hardness, strength, and toughness. These represent just a few of the numerous machining processes available for steel round bars. The selection of a specific process depends on factors such as the desired shape, size, surface finish, and mechanical properties required for the intended application.

Q:How do you cut steel round bars?: To cut steel round bars, one can utilize various methods based on specific requirements and available tools. Here are a few commonly employed techniques: 1. Abrasive Cutting: By using a handheld angle grinder or chop saw equipped with an abrasive cutting wheel or disc, a groove is created on the surface of the round bar. Applying pressure and rotating the bar gradually allows the cutting wheel to slice through the steel. 2. Cold Saw: This specialized machine operates with a circular blade at a low speed, minimizing heat generation. The round bar is firmly clamped, and the cold saw's blade is lowered onto it to achieve precise cuts. 3. Band Saw: Another commonly used machine for steel round bar cutting, the band saw features a rotating toothed metal band that moves on two pulleys. The round bar is secured in a vise, and the band saw is adjusted to the desired angle and speed. The bar is then fed into the blade, resulting in smooth cuts. 4. Torch Cutting: For thicker steel round bars, oxy-fuel torch cutting is suitable. This method involves using a torch that combines oxygen and fuel gas, like acetylene, to produce a high-temperature flame. The round bar is heated until it becomes molten, and then a separate stream of oxygen is directed onto the heated area, causing rapid oxidation and enabling a cut. Irrespective of the chosen method, it is crucial to adhere to proper safety measures, including wearing protective goggles and gloves, and ensuring a stable work surface. Furthermore, using the appropriate cutting tools and techniques for the specific type of steel being cut is vital to achieve clean and precise results.

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