Alloy Steel SCr420H AISI 5120

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 30 m.t.

Supply Capability:: 120000 m.t./month

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C	Si	Mn	Cr	S	P	Ni	Cu
0.18~0.24	0.17~0.37	0.50~0.80	0.70~1.00	≤0.035	≤0.035	≤0.030	≤0.030

Description	Carbon Steel Rod/Carbon Steel Bar,carbon steel rod,carbon steel shaft,mild steel bar, Mild steel shaft,ms bar
Material	ASTM	1005, 1006, 1008, 1010, 1015, 1020, 1025, 1030, 1035, 1040, 1045, 1050, 1055, 1060, 1065, 1070, 1080, 1084, 1016, 1022
DIN	Ck10, Ck15, Ck22, Ck25, Ck30, Ck35, Ck40,Ck45, Ck50, 30Mn4, 40Mn4
BS	040A04, 095M15, 045M10, 080A40, 045M10, 080M50
JIS	S09CK, S9CK, S10C, S15C, S20C, S25C, S30C, S35C, S40C, S45C, S50C, S55C, S58C, SB45, S30C, S40C, S45C, S53C
Standard	GB/T799, ASTM A29, A108, A321, A575, BS970, DIN1652, JIS G4051
Section shape	Round, square, hexagonal, flat, angle
Surface	Black painted, galvanized
Specifications	Round bar	Diameter: 4mm~1200mm
Angle bar	Size: 3mm20mm20mm~12mm800mm800mm
Square bar	Size: 4mm4mm~100mm100mm
Flat bar	Thickness: 2mm~100mm
Width: 10mm~500mm
Hexagonal	Size: 4mm~800mm
Length	2m, 4m, 5.8m, 6m, 11.8m, 12m or as required.

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: What is the tolerance for diameter in steel round bars?: The tolerance for diameter in steel round bars may differ based on the manufacturer or industry's specific standards and requirements. Typically, a certain range is specified for the diameter tolerance to maintain the desired precision and consistency in the bars' dimensions. This tolerance is usually denoted as a plus or minus value, indicating the acceptable deviation from the specified diameter. To ascertain the precise tolerance for diameter in steel round bars, it is essential to verify the applicable industry standards or consult with the manufacturer, as it can vary depending on the intended application and manufacturing process employed.

Q: Are steel round bars suitable for high-pressure applications?: Steel round bars are frequently a good choice for high-pressure applications. Steel is renowned for its strength and durability, making it an ideal material for handling high pressure. Round bars, in particular, possess exceptional tensile strength and resistance to deformation, rendering them suitable for utilization in high-pressure settings like hydraulic systems, oil and gas pipelines, and structural applications. Furthermore, steel round bars can be customized to meet specific strength and hardness criteria, further enhancing their aptness for high-pressure applications. Nevertheless, it is crucial to carefully consider the requirements of the particular application and seek advice from an engineer or industry expert to guarantee the selection of the most appropriate grade and size of steel round bar for optimal performance and safety.

Q: How many grades of steel are round 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. It is divided into three kinds: hot rolling, forging and cold drawing. There is no classification of steel. However, high quality finished steel must be in the form of round steel, otherwise it is called ingot or billet and section steel.

Q: Can steel round bars be used for hydraulic applications?: Yes, steel round bars can be used for hydraulic applications. Steel is known for its strength and durability, making it a suitable material for hydraulic systems that require high pressure and heavy loads. Steel round bars can be used to manufacture various hydraulic components such as cylinders, pistons, shafts, and valves. The hardness and corrosion resistance of steel also make it a reliable choice for hydraulic applications where the fluid may contain contaminants or have high temperatures. However, it is important to consider the specific requirements of the hydraulic application and select the appropriate grade and type of steel round bars to ensure optimal performance and longevity.

Q: What are the considerations for selecting the right steel grade for a round bar?: There are various factors to consider when choosing the appropriate steel grade for a round bar. To begin with, the intended application of the round bar should be taken into account. Different steel grades possess distinct properties that make them suitable for specific purposes. For instance, stainless steel or high-alloy steel, which have exceptional heat resistance, would be ideal for use in high-temperature environments. Conversely, carbon steel, with its good strength and ductility, may be more appropriate for structural applications. Another factor to consider is the desired mechanical properties of the round bar, including tensile strength, yield strength, hardness, and toughness. These properties can vary significantly among different steel grades, so it is crucial to select a grade that meets the specific requirements of the application. Corrosion resistance is also an important consideration. If the round bar will be exposed to corrosive environments, such as in marine or chemical applications, it is advisable to choose a stainless steel grade with high resistance to corrosion. On the other hand, if corrosion resistance is not a major concern, a carbon steel grade may be more cost-effective. Cost is another factor to be taken into account. Different steel grades have varying costs based on availability, demand, and manufacturing processes. It is important to strike a balance between the desired properties of the round bar and the available budget to ensure cost-effectiveness. Moreover, the manufacturability of the steel grade should be considered. Some steel grades may be more challenging to machine or weld, which can impact the production process and cost. It is crucial to select a readily available steel grade that can be easily processed to meet the required specifications. Finally, it is always advisable to seek guidance from steel suppliers, engineers, or metallurgists to ensure that the chosen steel grade aligns with the specific requirements of the application. Their expertise and experience in the industry can provide valuable insights and recommendations.

Q: How do I determine the strength and hardness of a steel round bar?: To determine the strength and hardness of a steel round bar, there are a few techniques and tests that can be used: 1. Tensile Test: This is the most common method for determining the strength of a steel bar. It involves applying a tensile force to the bar until it breaks, and measuring the maximum force or load it can withstand. This test provides information about the bar's ultimate tensile strength, yield strength, and elongation. 2. Hardness Test: There are several methods to measure the hardness of a steel bar, including the Rockwell, Brinell, and Vickers hardness tests. These tests involve indenting the surface of the bar with a standardized indenter and measuring the resulting indentation size. The hardness value obtained provides an indication of the bar's resistance to deformation and wear. 3. Charpy Impact Test: This test measures the toughness of a steel bar by striking it with a swinging pendulum and measuring the energy absorbed during fracture. It helps determine the ability of the bar to resist brittle fracture under impact loading conditions. 4. Microstructural Analysis: A microscopic examination of the steel bar's microstructure can provide insights into its mechanical properties. By preparing a polished and etched sample and examining it under a microscope, the presence of different phases, grain size, and any structural abnormalities can be observed. Different microstructural features can influence the strength and hardness of the bar. 5. Chemical Composition Analysis: The chemical composition of the steel bar, particularly the carbon content, plays a significant role in determining its strength and hardness. Analyzing the composition using techniques like spectroscopy or chemical analysis can provide valuable information about the bar's mechanical properties. It is important to note that these tests and techniques should be conducted by qualified professionals in a controlled laboratory environment to ensure accurate and reliable results. Additionally, specific standards and specifications may exist for different applications, so consulting relevant standards and guidelines can provide further guidance on determining the strength and hardness of a steel round bar.

Q: What are the different types of steel round bar alloys for improved toughness and wear resistance?: There are several different types of steel round bar alloys that are known for improved toughness and wear resistance. Some of these alloys include tool steel, stainless steel, alloy steel, and carbon steel. Each of these alloys has unique properties and compositions that make them suitable for various applications where toughness and wear resistance are crucial.

Q: Can steel round bars be used for making suspension springs?: Yes, steel round bars can be used for making suspension springs. Steel is a commonly used material for suspension springs due to its high strength and durability. The round bars can be forged or shaped into the desired spring shape and then heat-treated to achieve the desired spring characteristics. Additionally, steel round bars can be easily machined and drilled to accommodate different suspension systems and components. However, it is important to consider the specific requirements and load capacity of the suspension system to ensure that the chosen steel round bars are suitable for the intended application.

Q: What are the different shapes available for steel round bars?: The different shapes available for steel round bars include round, square, hexagonal, and flat.

Q: What are the different types of steel round bar alloys used in aerospace applications?: There are several different types of steel round bar alloys that are commonly used in aerospace applications. These alloys are selected for their specific properties and characteristics that make them suitable for use in aircraft and spacecraft components. Some of the most commonly used alloys include: 1. 4130: This alloy is a low-alloy steel that contains chromium and molybdenum. It has excellent strength and toughness, making it suitable for use in applications such as landing gear components and structural tubing. 2. 4340: This alloy is a nickel-chromium-molybdenum steel that is known for its high strength and good ductility. It is commonly used in applications such as gears, shafts, and structural components that require high strength and toughness. 3. 17-4 PH: This alloy is a precipitation-hardening stainless steel that offers a combination of high strength, corrosion resistance, and good toughness. It is often used in aerospace applications where both strength and corrosion resistance are important, such as in turbine blades and structural components. 4. 15-5 PH: This alloy is another precipitation-hardening stainless steel that offers high strength and good corrosion resistance. It is commonly used in aerospace applications such as landing gear components and structural parts. 5. 9310: This alloy is a low-alloy steel that is known for its high hardenability and toughness. It is often used in aerospace applications where high strength and good impact resistance are required, such as in gears and shafts. These are just a few examples of the different types of steel round bar alloys used in aerospace applications. Each alloy offers specific properties and characteristics that make it suitable for different components and requirements in the aerospace industry.

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