C22 Carbon Steel Round Bars

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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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Chemical Composition	Mechanical Properties (In Quenched & Tempered State)
C	0.37-0.44 %	Tensile strength(MPA)	≥980(100)
Si	0.17-0.37 %	Yield strength (MPA)	≥785(80)
Mn	0.50-0.80 %	Elongation (δ5/%)	≥9
Cr	0.80-1.10 %	Reduction in Area (ψ/%)	≥45
Ni	≤0.30 %	Impact (J)	≥ 47
P	≤0.035 %	Impact toughness value αkv (J/cm2)	≥59(6)
S	≤0.035 %	Hardness	≤207HB
Cu	≤0.030 %

Grade/Material	1020 1045 4140 4130 4150 ASTM A36 A105 S20C S45c SCM440
Available sizes	Round: Dia. 9.5–300mm Square:88-160160mm Flat: Thickness 10–120mm, width 305 – 2200mm
Size tolerance	Length tolerance:+100mm/-0mm Straigthness:<=3mm/m
Delivery condition	Hot rolled or cold drawn or forged, turned or black surface, annealed or QT as customer’s request
Applications	Statically and dynamically stressed components for vehicles, engines and machines. For parts of larger cross-sections, crankshafts, gears.
Inspection	100% Ultrasonic according to the test standards: SEP1921-84,GR.3 CLASS C/C
Packing situation	In bundle or as customer required
Process	EAF+LF+VD ( necessary) +UT+ Peeled(optional) +Turned (optional) + Heat Treatment (optional)
Delivery time	30days after the down payment
Payment term	T/T or L/C

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:How are steel round bars tested for quality?: Steel round bars are tested for quality through various methods such as visual inspection, dimensional checks, surface defects detection, mechanical testing, and chemical analysis. These tests ensure that the steel bars meet the required standards for strength, durability, and composition, ensuring their suitability for specific applications.

Q:How do you measure the hardness of a steel round bar?: The hardness of a steel round bar can be measured using various methods, with the most common method being the Rockwell hardness test. This test involves applying a specific load to an indenter and measuring the depth of the indentation left on the material's surface. To measure the hardness of a steel round bar using the Rockwell hardness test, the following steps can be followed: 1. Select the appropriate Rockwell scale for the steel being tested. The most commonly used scales for steel are HRC (Rockwell C) and HRB (Rockwell B). 2. Clean the surface of the steel round bar to remove any dirt, oil, or contaminants that could affect the accuracy of the test. 3. Place the steel round bar on a flat and stable surface, ensuring it is properly supported to prevent any movement during testing. 4. Select the appropriate indenter for the chosen Rockwell scale. For HRC, a diamond cone indenter is typically used, while for HRB, a hardened steel ball is used. 5. Apply a preliminary minor load to the indenter, typically 10 kgf (kilogram-force) for HRC and 3 kgf for HRB. This helps ensure proper contact between the indenter and the material's surface. 6. Apply the major load, which is specific to the chosen Rockwell scale. For HRC, it is typically 150 kgf, while for HRB, it is usually 100 kgf. 7. Allow the major load to dwell for a specific period, typically 15 seconds, to ensure proper indentation. 8. Release the major load while keeping the minor load applied. This allows the indenter to partially recover, reducing the depth of the indentation. 9. Measure the depth of the remaining indentation using a microscope or a specialized Rockwell hardness testing machine. The measured value corresponds to the hardness value on the chosen Rockwell scale. It is important to note that the Rockwell hardness test is just one of several methods available to measure the hardness of a steel round bar. Other methods, such as the Brinell hardness test or the Vickers hardness test, may also be used depending on the specific requirements of the application.

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:Can steel round bars be used for making shock absorber components?: Yes, steel round bars can be used for making shock absorber components. Steel is a common material choice for shock absorber components due to its strength, durability, and ability to withstand high levels of stress and impact. The round shape of the bars also allows for easy machining and fabrication of the necessary components.

Q:How are steel round bars tested for quality and compliance?: Steel round bars are tested for quality and compliance through various assessment methods such as visual inspection, dimensional measurements, chemical composition analysis, and mechanical property testing. These tests ensure that the bars meet the required standards, strength, and durability for their intended applications.

Q:What are the advantages of using nickel-molybdenum alloy steel round bars?: One of the main advantages of using nickel-molybdenum alloy steel round bars is their exceptional strength and durability. These bars have a high tensile strength, making them suitable for applications that require resistance to heavy loads and extreme temperatures. Additionally, nickel-molybdenum alloy steel round bars offer excellent corrosion resistance, making them ideal for use in harsh environments where exposure to moisture, chemicals, or corrosive substances is a concern. Moreover, this alloy steel also exhibits good weldability and machinability, allowing for ease of fabrication and customization. Overall, the use of nickel-molybdenum alloy steel round bars can result in long-lasting, reliable, and cost-effective solutions in various industries such as construction, automotive, and aerospace.

Q:What are the advantages of using nickel-chromium-titanium alloy steel round bars?: There are several advantages of using nickel-chromium-titanium alloy steel round bars: 1. High Strength: Nickel-chromium-titanium alloy steel round bars are known for their exceptional strength and durability. They have a high tensile strength, making them suitable for applications requiring heavy-duty materials. 2. Corrosion Resistance: These alloy steel round bars have excellent corrosion resistance properties due to the presence of nickel and chromium. This makes them ideal for use in environments where exposure to moisture, chemicals, or harsh conditions is common. 3. Heat Resistance: Nickel-chromium-titanium alloy steel round bars can withstand high temperatures without losing their mechanical properties. They exhibit good heat resistance, making them suitable for applications in industries such as aerospace, power generation, and automotive. 4. Fatigue Resistance: The unique composition of nickel-chromium-titanium alloy steel round bars provides excellent fatigue resistance, allowing them to withstand repeated stress and load cycles without deformation or failure. This makes them suitable for applications in high-stress environments. 5. Machinability: Despite their high strength and toughness, nickel-chromium-titanium alloy steel round bars are relatively easy to machine. They can be easily cut, drilled, or shaped, allowing for efficient and precise manufacturing processes. 6. Versatility: These alloy steel round bars have a wide range of applications due to their versatile properties. They can be used in industries such as construction, automotive, aerospace, marine, and many more. Their high strength and corrosion resistance make them suitable for various structural and load-bearing applications. Overall, nickel-chromium-titanium alloy steel round bars offer a combination of high strength, corrosion resistance, heat resistance, fatigue resistance, machinability, and versatility, making them a preferred choice for many industrial applications.

Q:What is the cost of a steel round bar?: The price of a steel round bar can fluctuate based on various elements, including its dimensions, quality, and the source from which it is obtained. Typically, the larger the diameter and length of the round bar, the more expensive it becomes. Moreover, the steel grade significantly influences the cost since different grades possess different levels of robustness and endurance. Furthermore, the supplier and location also influence the price due to factors such as transportation and market demand. To obtain a precise cost estimation, it is advisable to reach out to a nearby supplier or consult online metal marketplaces for up-to-date pricing information.

Q:Are steel round bars suitable for the production of springs?: Indeed, springs can be produced using steel round bars. Steel, renowned for its exceptional strength and durability, finds widespread application in spring manufacturing. The circular configuration of these bars facilitates effortless shaping and molding, rendering them an ideal choice for spring production procedures. Steel round bars can be conveniently machined and heat-treated to impart the desired spring attributes, including elasticity and resilience. Furthermore, steel boasts a remarkable tensile strength, enabling it to endure substantial loads. Consequently, it proves well-suited for applications necessitating robust and dependable springs.

Q:Can steel round bars be recycled?: Indeed, the recycling of steel round bars is possible. Steel, being an immensely recyclable substance, encompasses steel round bars as well. The process of recycling steel round bars entails the gathering of scrap material, its subsequent melting, and the subsequent remolding into fresh steel products. This course of action can be repeated countless times, all while upholding the steel's quality and resilience. By recycling steel round bars, not only are natural resources preserved, but energy consumption and greenhouse gas emissions are also diminished in contrast to the production of new steel. An environmentally conscious choice, recycling steel round bars aids in fostering sustainability and minimizing waste.

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