Hot Rolled Alloy Structural Steel Round Bar SCM440
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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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Hot Rolled Alloy Structural Steel Round Bar SCM440
Technical Paramenters
Standard | Grade | C | Cr | Mo | Si | Mn | P | S | Ni | Cu |
GB | 42CrMo | 0.38-0.45 | 0.90-1.20 | 0.15-0.25 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 | 0.3 | 0.3 |
JIS | SCM440 | 0.38-0.43 | 0.90-1.20 | 0.15-0.30 | 0.15-0.35 | 0.60-0.90 | 0.03 | 0.03 | 0.25 | 0.3 |
ASTM | 4140 | 0.38-0.43 | 0.80-1.10 | 0.15-0.25 | 0.15-0.35 | 0.75-1.00 | 0.035 | 0.04 | — | — |
ENISO | 42CrMo4 | 0.38-0.45 | 0.90-1.20 | 0.15-0.30 | ≤0.40 | 0.60-0.90 | 0.035 | 0.035 | — | |
Grade | aisi4140 astm4140 sae4140 42CrMo,1.7225,scm440,42CrMo4 |
Processing | EAF+LF+VD |
Commodity | steel round bar/round steel bar/round bar steel |
Technique | hot rolled |
Diameter | 10-310mm |
Length | canbe required to 3-12m |
Sizes tolerance | length: +/-100mm,straightless:3mm/m |
Application | 1) General service industries (petroleum, food, chemical, paper, fertilizer, Fabric, aviation and nuclear) 2) Fluid, gas and oil transport 3) Pressure and heat transmission 4) Construction and ornament 5) Boiler heat exchangers |
Advantages of this material | 1) High fatigue strength and impact resistance after tempering 2) Good low-temperature impact toughness 3) No obvious temper brittleness |
Quality Condition | 1): Straightness: 3mm/m (max) 2): Corner Radius: 3(max) 3): The ends will be end cut or gas cut 4): No cracks on the surface |
Packing | 1): Paint oil on the surface to protect steel bars from rusting. 2): Bundle packing by Iron Strips. 3): Bundle weight is from 2mt to 3 mt. 4): Two or three tags will be attached on each bundle. |
MOQ | 5 tons for each sizes |
Products Show
Product Overviews
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) |
Application
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 |
Work Shop
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:
- There are several different types of steel round bar alloys that are known for their improved hardness and strength. Some of the most common alloys used for this purpose include: 1. Carbon Steel: Carbon steel is a popular choice for its exceptional strength and hardness. It contains a higher percentage of carbon compared to other alloys, which enhances its overall durability and resistance to wear and tear. 2. Alloy Steel: Alloy steel is a combination of carbon steel and other elements such as manganese, nickel, chromium, or vanadium. These additional elements improve the hardness and strength of the steel, making it more suitable for applications that require high tensile strength and toughness. 3. Stainless Steel: Stainless steel is a corrosion-resistant alloy that contains a minimum of 10.5% chromium. The addition of chromium enhances its hardness and strength, making it ideal for applications that require resistance to corrosion, heat, and wear. 4. Tool Steel: Tool steel is specifically designed to be used in the manufacturing of various tools. It is known for its high hardness, wear resistance, and strength. Tool steel often contains elements such as tungsten, molybdenum, or vanadium to improve its performance. 5. High-Speed Steel: High-speed steel is a type of tool steel that is specifically developed for use in high-speed cutting tools such as drills and milling cutters. It is known for its exceptional hardness and ability to retain its cutting edge even at elevated temperatures. 6. Maraging Steel: Maraging steel is a low-carbon, high-nickel alloy that is known for its exceptional strength, toughness, and resistance to fatigue. It is often used in applications that require high strength and durability, such as aerospace and defense industries. These are just a few examples of the different types of steel round bar alloys that are known for their improved hardness and strength. The specific choice of alloy depends on the intended application and the desired properties required for the end product.
- Q:
- Steel round bars are classified based on their shape as either hot-rolled or cold-drawn round bars.
- Q:
- Steel round bars are available in a variety of shapes, each designed to meet specific needs and applications. Some of the common shapes of steel round bars include: 1. Round: This is the most common and basic shape of steel round bars. It has a circular cross-section and is widely used in various industries for applications such as construction, manufacturing, and engineering. 2. Square: Square steel round bars have a square cross-section, making them suitable for applications that require stability and structural strength. They are commonly used in the construction of frames, supports, and braces. 3. Hexagonal: Hexagonal steel round bars have six flat sides and are often used in applications that require better grip and torque resistance, such as in machinery and tools. The hexagonal shape allows for a more secure connection and prevents slippage. 4. Flat: Flat steel round bars have a rectangular cross-section with two flat sides. They are commonly used for structural applications, such as in building frames and supports, as well as in the manufacturing of machinery and equipment. 5. Half-round: Half-round steel round bars have a semi-circular cross-section with one flat side. They are often used as decorative elements in architecture and furniture, as well as in the construction of railings and handles. 6. Oval: Oval steel round bars have an elongated oval shape, providing a unique aesthetic appeal. They are commonly used in decorative applications, such as in the design of furniture, railings, and artistic structures. Overall, the availability of different shapes in steel round bars allows for versatility in various industries, enabling engineers, manufacturers, and designers to choose the most suitable shape based on their specific requirements.
- Q:
- Yes, steel round bars are suitable for high-temperature applications. Steel is known for its excellent strength and heat resistance, making it a reliable choice for various industries that require materials capable of withstanding elevated temperatures. Steel round bars can maintain their structural integrity and mechanical properties even under extreme heat conditions, making them a popular choice for applications such as furnace components, heat exchangers, and high-temperature machinery.
- Q:
- Yes, steel round bars are suitable for the production of gears. Steel is a strong and durable material that can withstand high levels of stress and friction, making it ideal for gear manufacturing. Additionally, steel round bars can be easily machined and heat-treated to achieve the required hardness and precision for gear production.
- Q:What kind of steel pipe is round steel?
- First of all, this is the two concept, round steel solid, hollow steel pipe; secondly, the round bar is divided into hot rolling, forging and cold drawn three. Generally seamless steel pipe can be divided into hot rolling (extrusion), cold rolling (pull), heat expansion of the basic types of steel pipe. Hope to be of help to you
- Q:
- The hardness of a steel round bar can vary depending on the specific type of steel used and the manufacturing process, but it is typically measured on the Rockwell or Brinell hardness scales.
- Q:
- The different mechanical properties of steel round bars include tensile strength, yield strength, elongation, hardness, and impact resistance. Tensile strength refers to the maximum amount of stress a material can withstand before breaking. Yield strength is the stress at which a material begins to deform permanently. Elongation measures the amount of deformation a material can undergo before breaking. Hardness determines the material's resistance to indentation or scratching. Impact resistance is the ability of a material to absorb energy during sudden impacts without breaking.
- Q:
- The moment of inertia for a steel round bar can be calculated using the formula for the moment of inertia of a solid cylinder, which is given by I = (1/4)πr^4, where I is the moment of inertia and r is the radius of the round bar.
- Q:
- No, steel round bars are typically only available in round shapes. The term "round bar" refers specifically to a cylindrical shape with a circular cross section. However, there are other types of steel bars available in different shapes, such as square bars, flat bars, and hexagonal bars. These bars have specific applications and properties that make them suitable for different uses. So, while steel round bars are limited to round shapes, there are various other shapes of steel bars available in the market to cater to different requirements.
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