Alloy Steel Round Bars 42CrMo4

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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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GB	DIN	AISI	JIS
42CrMo	1.7225	4140	SCM440

C	Si	Mn	Cr	Mo	P	S
0.38-0.43	0.40max	0.60-0.90	0.90-1.20	0.15-0.30	≤0.035	≤0.035

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:Are steel round bars prone to deformation?: Steel round bars are generally not prone to deformation when they are properly manufactured and used within their intended limits. Steel is known for its high tensile strength and durability, making it resistant to bending or warping under normal circumstances. However, it is important to note that excessive force or improper handling can still cause deformation in steel round bars. Overloading, incorrect storage conditions, or inappropriate machining techniques can all contribute to bending or twisting of the bars. Therefore, it is crucial to follow recommended guidelines and industry standards to ensure the integrity and longevity of steel round bars.

Q:Are steel round bars suitable for decorative purposes?: Indeed, decorative purposes can be served by steel round bars. Steel, being a versatile and durable material, can be molded and crafted into numerous designs and patterns. The application of steel round bars extends to the creation of decorative elements like railings, furniture, sculptures, and architectural details. The polished and lustrous surface of steel contributes a contemporary and elegant touch to any area. Moreover, the strength and longevity associated with steel make it a pragmatic option for decorative endeavors, as it can endure environmental conditions and preserve its visual appeal throughout time.

Q:What are the advantages of using precipitation-hardening steel round bars?: Using precipitation-hardening steel round bars in various applications has several advantages. Firstly, these bars provide exceptional strength and hardness, making them suitable for industries that require robust and durable materials. The precipitation-hardening process involves heat treatment, which enhances the steel's strength and resistance to wear, deformation, and fatigue. Secondly, precipitation-hardening steel round bars exhibit excellent corrosion resistance. This makes them ideal for applications in marine environments or industries where exposure to harsh chemicals or corrosive substances is common. The steel's resistance to corrosion ensures the longevity and reliability of components or structures made from it. Another advantage is the versatility of these bars. They can be easily machined, welded, and forged, allowing for flexibility in design and fabrication processes. This makes them suitable for a wide range of applications, including aerospace, automotive, construction, and oil and gas industries. Furthermore, precipitation-hardening steel round bars offer good dimensional stability. Their low rates of thermal expansion mean they retain their shape and size even under extreme temperature variations. This characteristic is particularly important in precision engineering or tool manufacturing, where dimensional accuracy and stability are crucial. Lastly, the availability of a wide range of grades and sizes of precipitation-hardening steel round bars makes it easier to find the most suitable option for specific requirements. Different grades offer varying levels of strength, toughness, and corrosion resistance, allowing for tailored solutions to meet different application needs. Overall, the advantages of using precipitation-hardening steel round bars include exceptional strength, corrosion resistance, versatility, dimensional stability, and availability in various grades. These advantages make them the preferred choice for many industries requiring high-performance and durable materials.

Q:What are the advantages of using free-cutting steel round bars?: There are several advantages to using free-cutting steel round bars. Firstly, they offer improved machinability, which means they can be easily and efficiently machined into various shapes and sizes without excessive tool wear or power consumption. This leads to increased productivity and reduced manufacturing costs. Additionally, free-cutting steel round bars have excellent chip formation properties, resulting in better surface finish and dimensional accuracy of the machined parts. They also exhibit enhanced surface hardness and wear resistance, making them suitable for applications that require durability and strength. Lastly, these bars are readily available and cost-effective, making them a preferred choice for many industries.

Q:Are steel round bars suitable for architectural applications?: Architectural applications can indeed make use of steel round bars. Steel, being a versatile and durable material, is commonly employed in construction and architectural projects. The utilization of steel round bars for architectural purposes offers numerous advantages. Primarily, steel round bars are renowned for their robustness and load-bearing capacity. They possess excellent tensile strength and can withstand heavy loads, making them suitable for applications where structural integrity is paramount. Whether employed as support beams, columns, or other structural elements, steel round bars offer a dependable and long-lasting solution. Furthermore, steel round bars exhibit high resistance to corrosion and fire, which is crucial for architectural applications. They can endure harsh weather conditions, including extreme temperatures, without compromising their structural integrity. This resistance to corrosion and fire renders steel round bars a secure and reliable choice for architectural projects. Moreover, steel round bars can be conveniently fabricated and customized to meet specific design requirements. They can be cut, welded, bent, and shaped into various forms, enabling architects and designers to create unique and innovative structures. The versatility of steel round bars makes them suitable for a wide range of architectural applications, such as bridges, stadiums, and high-rise buildings. Additionally, steel round bars are cost-effective in comparison to certain other building materials. They possess a longer lifespan and require minimal maintenance, thereby reducing the overall lifecycle costs of a project. The combination of cost-effectiveness, durability, and versatility contributes to the popularity of steel round bars in architectural applications. In conclusion, steel round bars are indeed appropriate for architectural applications. Their strength, resistance to corrosion and fire, ease of fabrication, and cost-effectiveness make them an ideal choice for a diverse array of architectural projects. Whether employed for structural elements or decorative purposes, steel round bars offer a reliable and aesthetically pleasing solution for architects and designers.

Q:What are the different types of steel alloy compositions used for round bars?: Round bars are made from various steel alloy compositions, each with its own unique properties and applications. Some commonly used compositions include carbon steel, alloy steel, stainless steel, tool steel, duplex steel, and high-speed steel. Carbon steel is the basic and widely used type, consisting primarily of iron and carbon. It is known for its strength, durability, and affordability. Alloy steel, on the other hand, contains additional alloying elements like manganese, chromium, nickel, or molybdenum. This gives it enhanced strength, hardness, and resistance to wear, making it suitable for high-performance applications. Stainless steel, composed mainly of iron, chromium, and nickel, offers excellent corrosion resistance. It is ideal for environments with high moisture or chemical exposure, and it is often used in architectural and decorative applications. Tool steel is designed for exceptional hardness, toughness, and wear resistance. It is commonly used in the production of cutting tools, dies, and molds. Elements like tungsten, vanadium, or cobalt are added to enhance its performance. Duplex steel is a balanced combination of austenitic and ferritic microstructures. It provides excellent strength and corrosion resistance, making it suitable for demanding environments like the offshore oil and gas industry. High-speed steel is engineered to withstand high temperatures and maintain hardness and toughness at elevated speeds. It is frequently used in the production of cutting tools, drills, and milling cutters. Compositions containing elements like tungsten, molybdenum, or cobalt are typically used. These examples represent just a few of the steel alloy compositions available for round bars. The choice of composition depends on the specific application, desired properties, and performance requirements.

Q:Can steel round bars be used in the manufacturing of bearings?: Typically, steel round bars are not utilized in the production of bearings. Bearings necessitate materials with distinct qualities, such as exceptional strength, hardness, and resistance to wear. Steel round bars may not possess these attributes to the necessary extent. Instead, bearings are usually crafted from top-notch steel alloys that are specifically engineered for bearing purposes, such as bearing steel or stainless steel. These materials undergo specialized heat treatment procedures to attain the desired properties essential for bearing manufacturing, including the ability to bear heavy loads, minimal friction, and long-lasting endurance.

Q:Are steel round bars used in the manufacturing of machinery?: Yes, steel round bars are commonly used in the manufacturing of machinery. They are often utilized for various components such as shafts, gears, and axles due to their high strength, durability, and versatility.

Q:Can steel round bars be used for making interior components?: Indeed, the utilization of steel round bars in the creation of interior components is viable. Steel, being both sturdy and adaptable, can be molded and fashioned into a plethora of different designs and structures. Specifically, round bars are exceptionally well-suited for crafting interior components including handrails, staircases, furniture frames, and decorative elements. They offer not only robustness and stability, but also an appealing aesthetic to interior spaces. Moreover, steel round bars can be effortlessly welded, bent, or cut to fulfill particular design specifications, rendering them an optimal selection for bespoke interior components.

Q:What are the different grades of heat-treated steel round bars?: There exists a variety of heat-treated steel round bars with distinct properties and characteristics. Among the commonly used grades are: 1. 4140: Renowned for its high strength and toughness, this grade of heat-treated steel round bar possesses exceptional wear resistance and good machinability. It can undergo easy heat treatment to enhance its hardness and strength. 2. 4340: Heat-treated steel round bars belonging to this grade are recognized for their high tensile strength, toughness, and resistance to fatigue. They find extensive use in industries like aerospace and automotive, which demand superior strength and durability. 3. 8620: Characterized by its case hardening properties, this grade of heat-treated steel round bar exhibits good core strength, excellent toughness, and is frequently employed in applications requiring high wear resistance, such as gears, shafts, and pins. 4. 52100: Widely utilized in bearing applications, heat-treated steel round bars of this grade offer exceptional hardness, wear resistance, and high fatigue strength. They are specially designed to withstand heavy loads and provide long-lasting performance. 5. 1045: Recognized for its medium carbon content, this grade of heat-treated steel round bar provides good strength and impact resistance. It is commonly employed in applications that necessitate moderate strength and toughness, such as shafts, axles, and machinery parts. These examples represent only a fraction of the diverse grades of heat-treated steel round bars available in the market. The choice of grade depends on specific requirements like strength, hardness, toughness, and wear resistance. Seeking guidance from a knowledgeable professional is essential to determine the most suitable grade for one's particular needs.

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