SAE 52100 Bearing Steel Round Bars SUJ2 System 1

SAE 52100 Bearing Steel Round Bars SUJ2 System 2

SAE 52100 Bearing Steel Round Bars SUJ2 System 3

SAE 52100 Bearing Steel Round Bars SUJ2 System 4

SAE 52100 Bearing Steel Round Bars SUJ2

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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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DIN	AISI	JIS
1.2067	L1/L3	SUJ2

C	Si	Mn	Cr	P	S	Mo	Ni
0.95-1.10	0.15-0.35	0.25-0.40	1.40-1.70	≤0.03	≤0.03	---	---

Round steel bar 60-800mm
Flat steel bar 25-400mm*200-800mm

Black surface/ Grinded/ Machined

HB225MAX

Flat Steel GCr15 Flats are of Good hardening ability. Good wear resistance. Shadow depth of hardness

Flat Steel GCr15 Flats are for making gauges and measuring tools, mandrels, cold rolls and flanging rolls, wood and paper processing tools, slitting blades, ball bearings and shear knives

Hardening Harden from a temperature of 790-820oC, 820-860oC followed by water or oil quenching. Hardness after quenching is 63-67, 63-66 HRC. Tempering Tempering temperature: 150-300oC. Hardness after tempering is 56-65 HRC.

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 used for making fasteners?: Yes, steel round bars can be used for making fasteners. Steel round bars are commonly used in the manufacturing of fasteners such as bolts, screws, and rivets. The strength and durability of steel make it an ideal material for fasteners, as it can withstand high levels of stress and provide a secure connection. Additionally, steel round bars can be easily machined and threaded to create the desired shape and size needed for fasteners. Overall, steel round bars are a reliable and commonly used material in the production of fasteners.

Q: Can steel round bars be used for making decorative items?: Yes, steel round bars can definitely be used for making decorative items. Steel round bars are versatile and can be shaped, bent, and welded to create various decorative designs. They offer durability and strength, making them suitable for both indoor and outdoor applications. Steel round bars can be used to make decorative furniture, sculptures, railings, gates, light fixtures, and much more. Their sleek and modern appearance adds an industrial and contemporary touch to any space. Additionally, steel round bars can be finished with different coatings or treatments, such as powder coating or patina, to enhance their visual appeal and protect them from corrosion. Therefore, steel round bars are an excellent choice for creating decorative items due to their versatility, strength, and ability to add a stylish and unique touch to any design.

Q: The difference between round steel and screw steel: Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter.

Q: Are steel round bars suitable for decorative purposes?: Yes, steel round bars can be suitable for decorative purposes. They can be used in various architectural and interior design applications to create a modern and industrial aesthetic. Steel round bars can be shaped, polished, or painted to enhance their decorative appeal and add a stylish touch to furniture, fixtures, sculptures, and other artistic creations.

Q: What are the different types of steel used to make round bars?: There are various types of steel used to make round bars, including carbon steel, alloy steel, stainless steel, and tool steel.

Q: What are the different testing methods used for steel round bars?: Steel round bars undergo various testing methods to guarantee their quality and suitability for different applications. These methods encompass: 1. Visual Inspection: In this preliminary step, the bars are visually assessed for any discernible defects, such as cracks, surface irregularities, or incorrect dimensions. 2. Dimensional checks: To verify their diameter, length, and straightness, steel round bars are subject to dimensional scrutiny. Accurate measurements are imperative to meet specified requirements. 3. Ultrasonic Testing: Internal defects like cracks, voids, or inclusions are detected by passing ultrasonic waves through the round bars. This method identifies potential weaknesses that could compromise the bars' structural integrity. 4. Magnetic Particle Inspection: By utilizing a magnetic field and magnetic particles, this method identifies surface and near-surface defects like cracks, seams, or laps. It is especially advantageous for ferromagnetic materials like steel. 5. Dye Penetrant Inspection: This technique involves applying a colored dye to the round bars' surface and subsequently wiping it off. The dye seeps into any surface cracks or defects, making them visible under ultraviolet light. 6. Hardness Testing: To gauge the hardness of steel round bars, hardness testing is conducted using methods like Rockwell or Brinell scales. It assists in determining the material's ability to withstand external forces and ensures compliance with required hardness specifications. 7. Tensile Testing: This test measures the maximum load a steel round bar can bear before fracturing, providing insight into the material's strength and ductility. 8. Chemical Analysis: Chemical analysis is performed to ascertain the composition of the steel round bars, including the presence of elements like carbon, manganese, sulfur, phosphorus, and others. It guarantees adherence to the required chemical composition standards. These testing methods are vital in ensuring that steel round bars meet industry standards and customer requirements in terms of quality, reliability, and compliance. Employing a combination of these tests is essential to ensure overall quality and performance in various applications.

Q: Can steel round bars be used in the oilfield equipment industry?: Yes, steel round bars can be used in the oilfield equipment industry. Steel round bars are commonly used in the manufacturing of various components and structures in the oilfield equipment industry due to their strength, durability, and resistance to corrosion. These bars are often utilized in the construction of drilling tools, pipe fittings, valves, and other equipment needed for oil exploration, extraction, and transportation.

Q: How do steel round bars compare to carbon fiber round bars?: Steel round bars and carbon fiber round bars are materials commonly used in various industries, but they differ in several aspects. Strength and Durability: Steel round bars are renowned for their exceptional strength and durability, enabling them to withstand heavy loads, high temperatures, and harsh environments. On the other hand, carbon fiber round bars are also strong but generally not as strong as steel bars. However, they have a remarkable strength-to-weight ratio, making them a popular choice when weight reduction is crucial. Weight: One noticeable difference is the weight. Steel round bars are significantly heavier compared to carbon fiber round bars. This weight disparity often makes carbon fiber bars more preferable in industries where reducing weight is important, like aerospace and automotive sectors. The use of lighter bars can contribute to improved fuel efficiency, increased speed, and enhanced maneuverability. Corrosion Resistance: Steel round bars are susceptible to corrosion, especially when exposed to moisture and specific chemicals. Regular maintenance and protective coatings are often necessary to prevent rusting. Conversely, carbon fiber round bars possess inherent corrosion resistance. This property makes them valuable in environments where corrosion is a concern, such as marine applications. Flexibility and Stiffness: Steel round bars are generally stiffer and less flexible compared to carbon fiber round bars. This characteristic is advantageous in applications where rigidity and structural integrity are crucial, like construction and heavy machinery. In contrast, carbon fiber round bars offer higher flexibility and can be engineered to have varying levels of stiffness, making them suitable for applications requiring vibration damping or enhanced shock absorption. Cost: In terms of cost-effectiveness, steel round bars usually have the upper hand. Steel is widely available, and its production costs are relatively low. Carbon fiber, however, is more expensive to produce due to the complex manufacturing process and the cost of raw materials. Consequently, carbon fiber round bars tend to be pricier and are limited to industries where their unique properties justify the increased costs. In conclusion, steel round bars and carbon fiber round bars have their own advantages and disadvantages. Steel bars offer exceptional strength, durability, and cost-effectiveness, while carbon fiber bars excel in weight reduction, corrosion resistance, flexibility, and stiffness. The choice between the two depends on the specific requirements of the application, including factors such as load-bearing capacity, weight reduction, corrosion resistance, and cost considerations.

Q: How can stainless steel rounds occur? Is it a quality problem?: Cracks caused by inclusions in steel, cracks and steel surface of a certain angle, about 1 ~ 2.5mm, slightly decarburization on both sides, decarburization layer 0.10 ~ 0.15mm. There are inclusions on both sides of the crack and in the tail, and the ferrite band is formed

Q: Are steel round bars suitable for use in the construction of bridges?: Yes, steel round bars are suitable for use in the construction of bridges. Steel round bars offer high tensile strength, durability, and flexibility, making them ideal for withstanding heavy loads and structural demands. They also provide excellent resistance to corrosion, ensuring longevity and structural integrity. Additionally, steel round bars can be easily fabricated and installed, making them a cost-effective choice for bridge construction projects.

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