Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 1

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 2

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 3

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H System 4

Spring Steel Round Bar SUP7 SUP9 SUP10 SUP11 5160H 6150H

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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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Grade	C	Si	Mn	S	P	Cr	B
55Si7	0.42-0.60	1.50-2.00	0.60-0.90	Max 0.030	Max 0.030		0.0008-0.0030
60Si7	0.57-0.64	1.50-2.00	0.60-0.90	Max 0.030	Max 0.030		0.0008-0.0030
60SiCr7	0.56-0.64	1.60-2.00	0.70-1.00	Max 0.025	Max 0.025	0.20-0.40
55Cr3	0.52-0.59	Max 0.40	0.70-1.00	Max 0.025	Max 0.025	0.70-1.00

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:Are steel round bars suitable for high-stress applications?: Yes, steel round bars are suitable for high-stress applications. Steel is known for its strength and durability, making it an ideal material for high-stress environments. Round bars, in particular, offer excellent tensile strength and can withstand heavy loads and intense pressure. They are commonly used in industries such as construction, manufacturing, and engineering, where high-stress applications require a reliable and robust material. The round shape of the bars also provides uniformity in strength, ensuring consistent performance under extreme conditions. Additionally, steel round bars can be heat-treated to further enhance their mechanical properties, making them even more suitable for high-stress applications. Overall, steel round bars are a reliable and effective choice for demanding environments that require exceptional strength and resilience.

Q:What is the difference between seamless and welded steel round bars?: The main difference between seamless and welded steel round bars lies in their production process. Seamless steel round bars are made by piercing a solid steel billet to create a hollow tube, which is then elongated and rolled to the desired size and shape. On the other hand, welded steel round bars are formed by welding together two or more pieces of steel, typically using a fusion process. This results in a visible seam along the length of the bar. While seamless bars offer a smoother and more uniform surface, welded bars are generally more cost-effective and readily available in a wider range of sizes and lengths.

Q:Is the shear wall concealed column stirrup steel or round steel?: Specify the construction drawing is HPB300 is hot rolled round bar, that is HRB335, HRB400 is the hot rolled ribbed bar. Don't call thread steel, this name has long been abandoned. Simple, light marked wall column reinforcement detail construction drawing on the diameter and spacing is not encrypted, what non encrypted area, like the dense spacing.

Q:Can steel round bars be used in the manufacturing of conveyor systems?: Yes, steel round bars can be used in the manufacturing of conveyor systems. Steel is a strong and durable material that can withstand heavy loads and provide stability and support to conveyor systems. Steel round bars can be used as rollers or shafts in conveyor systems to facilitate the movement of materials or products along the conveyor belt. The smooth surface of the round bars allows for easy rotation and reduces friction, ensuring the smooth operation of the conveyor system. Additionally, steel round bars can be easily customized to fit specific conveyor system requirements, making them versatile and suitable for various industrial applications.

Q:What is the difference between a hot-rolled and a peeled steel round bar?: The production of a hot-rolled steel round bar involves heating a billet or ingot until it reaches a temperature suitable for shaping. The heated steel is then passed through a series of rollers to achieve the desired shape and size. This rolling process results in a bar with a rough surface texture and a slightly rounded edge. In contrast, a peeled steel round bar goes through a different manufacturing process. It is initially hot-rolled to achieve the desired shape and size, similar to the hot-rolled bar. However, after the initial hot rolling, the peeled bar undergoes a mechanical peeling process. This process entails removing the outer layer of the bar to achieve a smooth and shiny surface finish. Additionally, the peeling process contributes to improving the dimensional accuracy and surface quality of the bar. To summarize, the key distinction between a hot-rolled and a peeled steel round bar lies in the surface finish and dimensional accuracy. While a hot-rolled bar possesses a rough surface texture and a slightly rounded edge, a peeled bar exhibits a smooth and shiny surface finish with enhanced dimensional accuracy. The peeling process elevates the overall quality and appearance of the steel round bar, making it more appropriate for applications where aesthetics or precision hold significance.

Q:What are the different types of steel round bar surface finishes used in the aerospace industry?: Different steel round bar surface finishes are utilized in the aerospace industry to meet specific requirements and enhance component performance. Some commonly employed finishes include: 1. Smooth Finish: This basic finish involves leaving the steel round bar untreated, resulting in a smooth surface. It is used when no specific treatment is needed or further processing is required. 2. Polished Finish: By polishing the surface, the steel round bar gains an aesthetically pleasing, reflective appearance. This finish is ideal for enhancing the look of aerospace components visible to passengers or in the cabin area. 3. Shot Peened Finish: Employing small metal particles or beads to bombard the steel round bar surface, shot peening creates compressive stresses that improve fatigue resistance and reduce stress corrosion cracking risk. 4. Anodized Finish: Through electrochemical means, anodizing forms a protective oxide layer on the steel round bar's surface. This finish enhances corrosion resistance and allows for color addition or improved paint adhesion on aerospace components. 5. Passivated Finish: Passivation involves treating the steel round bar surface with an acid solution to remove impurities and develop a protective oxide layer. This finish enhances corrosion resistance, particularly in environments with moisture or chemical exposure. 6. Zinc or Nickel Plated Finish: Plating the steel round bar with zinc or nickel provides enhanced corrosion resistance, especially in harsh conditions. These finishes are commonly used for aerospace components exposed to saltwater or acidic environments. 7. Black Oxide Finish: A chemical conversion process forms a black protective layer on the steel round bar through black oxide coating. This finish offers increased corrosion resistance and provides an appealing black appearance to the component. 8. Chrome Plated Finish: Depositing a thin layer of chromium onto the steel round bar surface through chrome plating yields excellent wear resistance. This finish is suitable for aerospace components subjected to high friction or abrasion. These diverse steel round bar surface finishes in the aerospace industry serve various purposes, such as corrosion resistance, wear resistance, improved aesthetics, or fatigue resistance. The choice of the appropriate finish depends on the specific requirements and performance expectations of the aerospace component at hand.

Q:What is the maximum molybdenum content allowed for steel round bars?: The maximum molybdenum content allowed for steel round bars varies depending on the grade and specific requirements of the steel. Generally, the maximum molybdenum content for standard carbon and alloy steels is around 0.25-0.30%. However, for high-performance steels such as tool steels or stainless steels, the maximum molybdenum content can be higher, ranging from 1-10%, depending on the specific grade and application. It is crucial to consult the relevant industry standards, specifications, or material data sheets to determine the precise maximum molybdenum content allowed for a specific steel round bar.

Q:What is the difference between carbon steel and alloy steel round bars?: Carbon steel round bars are made primarily of carbon and iron, while alloy steel round bars are made of carbon, iron, and other elements such as chromium, nickel, or manganese. Alloy steel round bars have enhanced properties such as increased strength, hardness, and resistance to corrosion, making them ideal for applications that require higher performance. On the other hand, carbon steel round bars are more affordable and have good machinability, making them suitable for general-purpose use.

Q:What are the advantages of using nickel-molybdenum-vanadium alloy steel round bars?: Nickel-molybdenum-vanadium alloy steel round bars offer several benefits due to their unique properties. Firstly, they possess remarkable strength and durability, making them suitable for applications that demand structural integrity. Industries such as construction, automotive, and aerospace can benefit from this alloy's ability to withstand heavy loads and resist deformation. Additionally, these round bars exhibit excellent resistance to corrosion. The inclusion of nickel and vanadium in the alloy enhances its oxidation and corrosion resistance, even in harsh environmental conditions. Therefore, it becomes a preferred choice for applications that involve exposure to moisture, chemicals, or corrosive substances. Moreover, nickel-molybdenum-vanadium alloy steel round bars possess high heat resistance, making them suitable for use in high-temperature applications. The presence of molybdenum in the alloy enhances its ability to withstand thermal stress, ensuring structural stability even at elevated temperatures. Industries such as oil and gas, power generation, and heat exchangers can benefit from this property. The versatility of these round bars is another advantage. They can be easily forged, machined, and welded, allowing for a wide range of manufacturing processes. This versatility makes them suitable for applications that require complex shapes and designs, such as shafts, gears, and valves. Despite their numerous advantages, nickel-molybdenum-vanadium alloy steel round bars are relatively cost-effective compared to other high-performance alloys. Their excellent combination of properties results in a longer lifespan, reduced maintenance requirements, and improved performance, leading to cost savings over time. In conclusion, the use of nickel-molybdenum-vanadium alloy steel round bars offers high strength and durability, corrosion resistance, heat resistance, versatility, and cost-effectiveness. These properties make them a preferred choice for various industries and applications.

Q:Can steel round bars be used in the production of flanges?: Yes, steel round bars can be used in the production of flanges. Round bars made of steel are commonly used as raw materials in the manufacturing process of flanges. These round bars are often machined, forged, or rolled into the desired flange shape. Steel round bars offer several advantages in the production of flanges, including high strength, durability, and resistance to corrosion. They can be easily fabricated and machined to meet specific size and dimensional requirements. Steel round bars are widely utilized in various industries, such as oil and gas, petrochemical, power generation, and construction, for producing flanges that are used in piping systems to connect pipes or equipment.

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