20MnCr5 Alloy Steel Round Bars SAE 5152 System 1

20MnCr5 Alloy Steel Round Bars SAE 5152 System 2

20MnCr5 Alloy Steel Round Bars SAE 5152 System 3

20MnCr5 Alloy Steel Round Bars SAE 5152 System 4

20MnCr5 Alloy Steel Round Bars SAE 5152

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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	0.17-0.22 %	Tensile strength(MPA)	≥1482
Si	≤0.25 %	Yield strength (MPA)	≥1232
Mn	1.10-1.50 %	Elongation (δ5/%)	≥13
Cr	1.00-1.30 %	Reduction in Area (ψ/%)	≥57
Ni	≤0.30 %	Impact toughness value αkv (J/cm2)	≥73
P	≤0.035 %	Hardness	≤357HB
S	≤0.035 %

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 in the manufacturing of garden tools?: Yes, steel round bars can definitely be used in the manufacturing of garden tools. Steel is a versatile and durable material that is commonly used in the production of various tools, including garden tools. Steel round bars can be shaped and formed into different types of garden tools such as shovels, rakes, hoes, and pruning shears. The strength and resistance of steel make it suitable for withstanding the rigors of outdoor use, including digging, cutting, and scraping. Additionally, steel can be easily sharpened and maintained, ensuring that the garden tools remain efficient and long-lasting.

Q: How do steel round bars compare to other materials like aluminum or titanium?: Steel round bars have numerous advantages over materials like aluminum or titanium. Firstly, steel is renowned for its exceptional strength and durability, possessing a high tensile strength that enables it to withstand heavy loads and resist deformation under stress more effectively than aluminum or titanium. This makes steel round bars an excellent option for applications necessitating robust structural support. Moreover, steel boasts a higher melting point in comparison to aluminum, rendering it more suitable for high-temperature environments. It can endure extreme heat without compromising its strength, making it the preferred choice for industries such as construction, manufacturing, and automotive. Furthermore, steel round bars offer a cost-effective solution. Generally, steel is more affordable than titanium, making it a more budget-friendly alternative for a variety of projects. Additionally, steel is readily available and easily sourced, while obtaining titanium can be more challenging and manufacturing it can be more expensive. Nevertheless, it is imperative to acknowledge that aluminum and titanium possess their own unique advantages. Aluminum, for instance, is lightweight and exhibits excellent corrosion resistance, making it the preferred material for industries like aerospace, marine, and automotive. Conversely, titanium is renowned for its exceptional strength-to-weight ratio and corrosion resistance. It is commonly utilized in applications requiring high strength and low weight, such as aircraft components and medical implants. In conclusion, steel round bars offer unparalleled strength, durability, and cost-effectiveness when compared to aluminum or titanium. However, choosing the appropriate material ultimately depends on the specific requirements of the project, as each material possesses distinct advantages and applications.

Q: What are the different types of steel alloy compositions used for round bars?: There are several different types of steel alloy compositions used for round bars, including carbon steel, stainless steel, tool steel, and alloy steel. Each type has its own unique properties and characteristics that make it suitable for specific applications.

Q: Can steel round bars be used in the construction equipment industry?: Yes, steel round bars are commonly used in the construction equipment industry. Steel round bars are known for their strength, durability, and versatility, making them suitable for various applications in construction equipment. They can be used to manufacture components such as axles, shafts, pins, and fasteners. The high strength of steel round bars ensures that the construction equipment can withstand heavy loads and harsh working conditions. Additionally, steel round bars can be easily machined and welded, allowing manufacturers to create complex and customized designs for construction equipment. Overall, steel round bars are widely utilized in the construction equipment industry due to their exceptional mechanical properties and ability to enhance the performance and longevity of the equipment.

Q: What are the different types of steel round bar surface finishes?: The different types of steel round bar surface finishes include hot rolled, cold rolled, turned and polished, and ground.

Q: Can steel round bars be used for making tie rods?: Yes, steel round bars can be used for making tie rods.

Q: Are steel round bars suitable for the production of crankshafts?: Yes, steel round bars are suitable for the production of crankshafts. Steel round bars offer excellent strength, durability, and machinability, making them ideal for withstanding the high stress and rotational forces experienced by crankshafts in an engine. Additionally, steel's ability to be heat-treated and hardened further enhances its suitability for crankshaft production.

Q: Can steel round bars be used in the pharmaceutical industry?: It is possible to use steel round bars in the pharmaceutical industry. Steel round bars are widely used in different sectors, including pharmaceuticals, because of their strength, durability, and versatility. In the pharmaceutical field, steel round bars can be applied for various purposes, such as producing equipment, machinery, and storage systems. These bars can be utilized to create pharmaceutical manufacturing equipment like mixers, reactors, and centrifuges, which necessitate robust and dependable materials to ensure effectiveness and safety in the production processes. Additionally, steel round bars can be employed in constructing storage systems like racks and shelves, providing a solid and secure solution for organizing pharmaceutical products and supplies. The corrosion resistance and ease of cleaning of steel make it appropriate for maintaining hygienic conditions in pharmaceutical facilities. Overall, steel round bars give the pharmaceutical industry a dependable and cost-effective material choice for diverse applications.

Q: What are the maximum allowable stresses for steel round bars?: The maximum allowable stresses for steel round bars depend on various factors such as the grade of steel, the type of loading, and the design code being followed. In general, the maximum allowable stress for steel round bars is determined by the yield strength of the steel. The yield strength is the stress at which permanent deformation or yielding of the material occurs. Different grades of steel have different yield strengths. For example, mild steel typically has a yield strength of around 250 MPa (megapascals), while high-strength low-alloy (HSLA) steel can have a yield strength of up to 550 MPa. To determine the maximum allowable stress, typically a safety factor is applied to the yield strength. This safety factor takes into account uncertainties in material properties, loadings, and potential variations in manufacturing processes. The safety factor can vary depending on the application and design code being followed. For example, in structural steel design, the American Institute of Steel Construction (AISC) specifies a safety factor of 1.67 for the yield strength. This means that the maximum allowable stress would be the yield strength divided by 1.67. It is important to consult relevant design codes, standards, or engineering specifications for specific applications to determine the appropriate maximum allowable stresses for steel round bars.

Q: How can steel round bars be protected from corrosion?: Steel round bars can be protected from corrosion through various methods. One of the most common ways is by applying a protective coating such as paint or enamel. This coating acts as a barrier between the steel and the corrosive elements in the environment, preventing direct contact and reducing the chances of corrosion. Another effective method is through the use of galvanization. This involves coating the steel round bars with a layer of zinc. Zinc is a sacrificial metal, which means it corrodes more easily than steel. So, when the round bars are exposed to moisture or other corrosive substances, the zinc coating will corrode instead of the steel, providing an added layer of protection. Using stainless steel round bars is also a great way to prevent corrosion. Stainless steel contains a significant amount of chromium, which forms a passive layer on the surface of the steel. This passive layer acts as a shield, protecting the steel from corrosion caused by moisture or other corrosive agents. Regular maintenance and cleaning of the steel round bars is crucial in preventing corrosion. Removing dirt, dust, and other contaminants from the surface helps to maintain the protective coating or passive layer, if present. Additionally, keeping the round bars dry and storing them in a well-ventilated area can also help prevent corrosion. Lastly, proper handling and storage of steel round bars are important. They should be stored in a dry and covered area to prevent exposure to moisture and corrosive elements. Avoiding contact with other metals or materials that can cause galvanic corrosion is also essential. By implementing these protective measures, steel round bars can be effectively shielded from corrosion, ensuring their longevity and structural integrity.

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