Carbon Steel Rod Bar AISI 1050

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 10000 m.t./month

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Material	C	Si	Mn	S/P	B
20#	0.17-0.23	0.17-0.37	0.35-0.65	0.035(max)	0.0008-0.003
25#	0.22-0.29	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
30#	0.27-0.34	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
35#	0.32-0.39	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
40#	0.37-0.44	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
45#	0.42-0.48	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
50#	0.47-0.55	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
55#	0.52-0.60	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003
60#	0.57-0.65	0.17-0.37	0.50-0.80	0.035(max)	0.0008-0.003

GB	20#	30#	35#	40#	45#	50#	55#	60#
JIS	S20C	S30C	S35C	S40C	S45C	S50C	S55C	S60C
ASTM	1020	1030	1035	1040	1045	1050	1055	1060
								C60
DIN	C22	C30	C35	C40	C45/CK45	C50	C55

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 plated with other metals?: Yes, steel round bars can be plated with other metals. Plating is a process in which a thin layer of one metal is applied to the surface of another metal. This is commonly done to enhance the appearance of the steel round bar or to provide it with additional properties such as corrosion resistance or improved conductivity. The plating process involves immersing the steel round bar in a solution that contains ions of the desired metal. Through the use of electrical currents or chemical reactions, the metal ions are deposited onto the surface of the steel, forming a thin and uniform coating. Popular metals used for plating steel round bars include nickel, chrome, zinc, and copper. Plating is a versatile and cost-effective method to improve the performance and aesthetics of steel round bars for various applications.

Q: What are the different types of tests performed on steel round bars for quality control?: Steel round bars undergo various tests for quality control purposes to ensure they meet the necessary standards and specifications. These tests include: 1. Tensile Test: This test assesses the tensile strength, yield strength, and elongation properties of the steel bars. It involves applying a pulling force until the bar breaks, measuring the maximum force it can endure, and determining its ability to stretch without fracturing. 2. Hardness Test: The hardness test determines the steel bar's resistance to indentation or scratching, providing insight into its strength and durability. Common hardness tests include Rockwell, Brinell, and Vickers tests. 3. Chemical Composition Analysis: This analysis identifies the steel round bars' chemical composition, including the percentage of elements like carbon, manganese, sulfur, phosphorus, and others. It ensures compliance with specified composition requirements. 4. Ultrasonic Testing: Ultrasonic testing utilizes high-frequency sound waves to detect internal defects or discontinuities within the steel bars. This non-destructive test identifies cracks, voids, or other flaws that may compromise their structural integrity. 5. Dimensional Inspection: This inspection verifies whether the steel round bars meet the required dimensional tolerances, including diameter, length, and straightness. Precision measuring instruments such as calipers, micrometers, and gauges are used to ensure accurate dimensions. 6. Surface Quality Examination: This examination checks the surface condition of the steel bars for defects like cracks, pits, scratches, or irregularities. A smooth and defect-free surface is crucial for proper functionality and safety. 7. Microstructure Analysis: This analysis involves examining the internal structure of the steel bars under a microscope to determine grain size, inclusion content, and overall microstructural integrity. It provides insights into their mechanical properties and ability to withstand various loads and stresses. By conducting these tests, manufacturers guarantee that the steel round bars meet the required quality standards and are suitable for their intended applications.

Q: What are the safety precautions to be taken while handling steel round bars?: When handling steel round bars, it is important to follow certain safety precautions to prevent accidents and injuries. Here are some safety measures to be taken: 1. Personal Protective Equipment (PPE): Always wear appropriate PPE, such as safety goggles, gloves, and steel-toe boots, to protect yourself from potential hazards like flying debris, sharp edges, and crushing injuries. 2. Lifting Techniques: Use proper lifting techniques, such as bending your knees and using your leg muscles instead of your back, to avoid strain or back injuries. Do not attempt to lift heavy steel round bars alone; seek assistance or use lifting equipment like cranes or forklifts. 3. Secure Storage: Store steel round bars in a designated area or rack that is stable and secure. Ensure that they are properly stacked and organized to prevent them from falling or rolling onto someone. 4. Handling Tools: Use appropriate tools, such as tongs or lifting hooks, to handle steel round bars. Avoid using your hands or fingers directly to prevent cuts or pinching injuries. 5. Inspection: Before handling steel round bars, inspect them for any defects, sharp edges, or protrusions that may pose a safety risk. If any issues are found, report them to the appropriate personnel and do not use the bars until they are repaired or replaced. 6. Communication: Maintain clear communication with co-workers when handling steel round bars, especially in situations where multiple people are involved. Use hand signals or verbal cues to coordinate movements and avoid accidental collisions. 7. Proper Storage and Transportation: When storing or transporting steel round bars, ensure they are properly secured and adequately supported to prevent shifting, sliding, or falling during movement. 8. Training: Provide appropriate training to all personnel involved in handling steel round bars. This should include proper lifting techniques, the use of PPE, and awareness of potential hazards and safety procedures. By following these safety precautions, you can minimize the risk of accidents and injuries while handling steel round bars. Always prioritize safety to create a secure working environment for yourself and those around you.

Q: Are steel round bars suitable for aerospace applications?: Indeed, aerospace applications can find steel round bars to be suitable. Steel is renowned for its exceptional strength, durability, and resistance against corrosion, making it highly valued in the aerospace sector. Various aerospace components and structures, including landing gear, engine components, and structural supports, can benefit from the utilization of steel round bars. Nevertheless, it is crucial to acknowledge that the precise grade and composition of the steel round bars must adhere to the exacting requirements and standards established by the aerospace industry. Moreover, weight reduction endeavors and the integration of advanced materials like titanium and composites are also taken into account when considering aerospace applications.

Q: What is the difference between a polished and a precision ground steel round bar?: A polished steel round bar refers to a bar that has undergone a polishing process to achieve a smooth and shiny surface finish. This process involves using abrasive materials to remove any imperfections or roughness on the surface of the bar. The end result is a visually appealing bar with a high level of aesthetic appeal. On the other hand, a precision ground steel round bar is a bar that has been precisely ground to achieve tight dimensional tolerances and a smooth surface finish. This grinding process involves removing material from the surface of the bar using grinding wheels or other cutting tools. The purpose of precision grinding is to ensure that the bar meets specific size and shape requirements, making it suitable for use in applications that demand precise dimensions and tight tolerances. In summary, the main difference between a polished and a precision ground steel round bar lies in the purpose of the respective finishing processes. Polishing is primarily done for aesthetic reasons, enhancing the appearance of the bar, while precision grinding focuses on achieving precise dimensions and tight tolerances to meet specific technical requirements.

Q: 20# difference between round bar and A3 round bar, can they be used separately?: The former belongs to low carbon steel, and the latter belongs to iron.The mechanical properties of the two are completely different, and they can not be interchanged if they are technically required

Q: How do steel round bars compare to brass round bars?: Steel round bars and brass round bars possess distinct characteristics that make them suitable for different purposes. To begin with, steel round bars exhibit superior strength and durability in comparison to brass round bars. Steel boasts a higher tensile strength, rendering it ideal for applications demanding resistance against heavy loads. Consequently, it finds extensive usage in the construction, manufacturing, and automotive sectors, where strength and durability play pivotal roles. On the other hand, brass round bars are renowned for their exceptional corrosion resistance and electrical conductivity. As an alloy of copper and zinc, brass acquires a unique amalgamation of properties. It frequently finds application in scenarios necessitating good electrical conductivity, such as electrical connectors, plumbing fittings, and musical instruments. Moreover, brass possesses an appealing golden appearance, making it a favored choice for decorative purposes. In terms of cost, steel round bars generally prove more economical than their brass counterparts. Steel enjoys widespread availability and substantial production, resulting in lower unit costs. Conversely, brass, as a copper alloy, being a relatively expensive metal, typically carries a higher price tag. Another crucial aspect to consider is machinability. Steel round bars typically prove more manageable and workable than brass round bars. Steel exhibits favorable cutting and drilling properties, thereby facilitating the fabrication of diverse shapes and sizes. Conversely, brass tends to boast a higher machinability rating, indicating its ease of cutting and shaping compared to other metals. In conclusion, steel round bars surpass brass round bars in terms of strength, durability, and cost-effectiveness. They serve as suitable components for applications necessitating robustness and resistance against heavy loads. Conversely, brass round bars excel in offering exceptional corrosion resistance, electrical conductivity, and an aesthetically pleasing appearance. They commonly find use in applications demanding high electrical conductivity and for decorative purposes. Ultimately, the choice between steel and brass round bars hinges upon the specific requirements of the given application.

Q: What are the advantages of using structural steel round bars?: There are several advantages of using structural steel round bars. Firstly, they provide excellent strength and durability, making them suitable for various structural applications. Additionally, their round shape allows for easy fabrication and installation, reducing construction time and costs. Steel round bars also have a high resistance to corrosion and can withstand extreme weather conditions. Moreover, they offer versatility in design as they can be easily bent, shaped, and welded to meet specific project requirements. Lastly, steel round bars are widely available and can be recycled, making them a sustainable choice for construction projects.

Q: 4145H round steel is equivalent to the domestic brand?: Round steel is a solid strip of steel whose cross section is round. Its specifications are expressed in diameter, in units of millimeters (mm), such as "50mm", which means a diameter of 50 millimeters of round steel. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts; round steel larger than 25 millimeters, mainly used for making machines.

Q: What are the advantages of using precipitation-strengthened steel round bars?: There are several advantages of using precipitation-strengthened steel round bars in various applications. Firstly, precipitation-strengthened steel round bars have enhanced mechanical properties, making them stronger and more durable compared to regular steel bars. The precipitation hardening process involves heat treatment, which allows for the formation of fine particles within the steel structure. These particles act as obstacles to dislocation movement, resulting in improved strength and hardness. Secondly, the enhanced strength of precipitation-strengthened steel round bars allows for the reduction of material usage while maintaining the desired level of structural integrity. This leads to cost savings in terms of raw materials and transportation, making it an economical choice for construction and manufacturing industries. Additionally, precipitation-strengthened steel round bars offer excellent corrosion resistance properties. The formation of fine particles during the precipitation hardening process creates a dense and uniform microstructure, which effectively blocks the movement of corrosive agents. This resistance to corrosion makes these bars ideal for applications in harsh environments or industries where exposure to corrosive substances is common. Another advantage of using precipitation-strengthened steel round bars is their ability to withstand high temperatures. The fine particles within the steel structure contribute to improved thermal stability, enabling these bars to maintain their strength and hardness even under elevated temperatures. This makes them suitable for applications that involve high-temperature operations, such as in the aerospace and automotive industries. Furthermore, the superior fatigue resistance of precipitation-strengthened steel round bars is an advantage in applications that require repetitive or cyclic loading. The precipitation hardening process enhances the material's resistance to fatigue failure, allowing it to withstand prolonged stress without undergoing significant deformation or failure. This makes these bars suitable for use in structures subjected to dynamic or fluctuating loads, such as bridges, cranes, and machinery components. In summary, the advantages of using precipitation-strengthened steel round bars include enhanced mechanical properties, reduced material usage, excellent corrosion resistance, high-temperature stability, and superior fatigue resistance. These advantages make them a preferred choice for various applications, ranging from construction and manufacturing to aerospace and automotive industries.

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