Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t
- Supply Capability:
- 10000 m.t/month
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Item specifice
Specifications of Round Bar
Produce Standard: GB, AISI, ASTM, SAE, EN, BS, DIN, JIS
Produce Processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate
Heat Treatment; Normalized / Annealed / Quenched+Tempered
Quality Assurance:All order we can received third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.
Equivement Grade
GB | 20# | 35# | 45# | 20Cr | 40Cr | 35CrMo | 42CrMo | GCr15 | 60Si2MnA | 65Mn |
AISI | 1020 | 1035 | 1045 | 5120 | 5140 | 4135 | 4140 | 52100 | 9260 | 1065 |
JIS | s20c | s35c | s45c | scr435 | scr440 | scm435 | scm440 | suj2 | sup7 | - |
DIN | c20 | c35 | c45 | 20cr4 | 41cr4 | 35crmo4 | 42crmo4 | 100cr6 | 65si7 |
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Chemical Composition
Grade | Dia.(mm) | C | Si | Mn | Cr | P | S | Ni | Cu | Mo |
1020 | 16-280 | 0.17-0.25 | 0.17-0.37 | 0.35-0.65 | ≤0.15 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 |
|
1035 | 16-300 | 0.32-0.40 | 0.17-0.37 | 0.50-0.80 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.25 | ≤0.25 |
|
1045 | 16-430 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 |
|
5120 | 16-85 | 0.18-0.24 | 0.17-0.37 | 0.50-0.80 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 |
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5140 | 16-400 | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.03 |
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4135 | 13-230 | 0.32-0.40 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25 |
4140 | 13-360 | 0.38-0.45 | 0.17-0.37 | 0.50-0.80 | 0.90-1.20 | ≤0.035 | ≤0.035 | ≤0.03 | ≤0.03 | 0.15-0.25 |
52100 | 21-400 | 0.95-1.05 | 0.15-0.35 | 0.20-0.40 | 1.30-1.65 | ≤0.027 | ≤0.02 | ≤0.30 | ≤0.025 | ≤0.10 |
9260 | 20-60 | 0.56-0.60 | 1.50-2.00 | 0.60-0.90 | ≤0.35 | ≤0.035 | ≤0.035 | ≤0.35 | ≤0.20 |
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1566 | 16-80 | 0.62-0.70 | 0.17-0.37 | 0.90-1.20 | ≤0.25 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 |
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Our Featured Products
Alloy steel: Combination of steel / Bearing steel// Spring steel/ Cr- mo steel
GB 20Cr/ 40Cr / 42CrMo / 35CrMo/ 20CrMn/GCr15/30CrMnTi…
ASTM 5120 /5140 / 4140/ 4135/ 5152/52100…
JIS SCr420H/ SCr440/ SCM3/ SUP9/SUJ2…
Carbon steel: Carbon tool steel /Carbon Structural Steel
GB 20/ 35 /45/…
ASTM 1020/ 1030/1045…
JIS S20C/ S30C / S45C…
Usage and Applications of Round Bar
1. Chinese standard steel bar is often used where large amounts of steel need to be formed, for example as structural steel.
2. And we can use this kind of product on the performance of the mechanical parts if the demand is not very high.
3. Steel round bar is used in construction and a large number of architectural and engineering structures.
Packaging & Delivery of Round Bar
Packaging Detail: All goods are packed in bundle with steel strips and shipped by break bulk vessel or container (depend on target market and different ports)
Delivery Detail: 15~45 days
Trade terms: FOB, CFR, CIF
MOQ: 30 metric tons per specification; we can negotiate the quantity if the specification is normal or we have stock of one specification.
Weight: Theprice invoicing on theoretical weight basis or actual weight basis depends on customer’s request.
Shipment: The shipment of bulk break or container is depends on customer’s request and the situation of the port of destination.
Documents given: Full set of original clean on board bill of lading; Original signed commercial invoice; Original packing list; Policy of insurance; Certificate of origin and what the target market needs.
FAQ:
Q1: Why buy Materials & Equipment from OKorder.com?
A1: All products offered byOKorder.com are carefully selected from China's most reliable manufacturing enterprises. Through its ISO certifications, OKorder.com adheres to the highest standards and a commitment to supply chain safety and customer satisfaction.
Q2: How do we guarantee the quality of our products?
A2: We have established an advanced quality management system which conducts strict quality tests at every step, from raw materials to the final product. At the same time, we provide extensive follow-up service assurances as required.
Q3: How soon can we receive the product after purchase?
A3: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q4: What makes stainless steel stainless?
A4: Stainless steel must contain at least 10.5 % chromium. It is this element that reacts with the oxygen in the air to form a complex chrome-oxide surface layer that is invisible but strong enough to prevent further oxygen from "staining" (rusting) the surface. Higher levels of chromium and the addition of other alloying elements such as nickel and molybdenum enhance this surface layer and improve the corrosion resistance of the stainless material.
Q5: Can stainless steel rust?
A5: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
- Q:What are the typical mechanical properties of special steel?
- The typical mechanical properties of special steel may vary depending on the specific grade and composition of the steel, but there are some general characteristics that can be expected. Special steels are often designed to have enhanced properties compared to standard carbon steels, making them suitable for specific applications that require superior strength, hardness, or resistance to wear and corrosion. One of the key mechanical properties of special steel is its high tensile strength. Special steels are typically engineered to have higher strength levels than standard steels, enabling them to withstand heavy loads and stresses without deformation or failure. This makes them ideal for use in industries such as construction, automotive, and aerospace, where structural integrity is crucial. Special steels also exhibit excellent hardness, which is a measure of a material's resistance to permanent indentation or scratching. This property is often achieved through alloying elements and heat treatment processes that increase the steel's ability to resist wear and abrasion. Consequently, special steels are commonly used in tools, cutting equipment, and machinery components that are subjected to severe wear conditions. Moreover, special steel alloys can possess exceptional toughness, which refers to the material's ability to absorb energy and resist fracture under impact or sudden loading. This is particularly important in applications where impact resistance is vital, such as in the manufacturing of heavy-duty machinery or structures subjected to dynamic loads. In addition to strength, hardness, and toughness, special steels may also exhibit improved corrosion resistance compared to standard steels. This is achieved by incorporating alloying elements such as chromium, nickel, or molybdenum, which create a protective oxide layer on the surface of the steel, preventing or slowing down the process of corrosion. This property is highly desirable in industries that deal with corrosive environments, such as marine, oil and gas, and chemical processing. In summary, the typical mechanical properties of special steel include high tensile strength, excellent hardness, exceptional toughness, and improved corrosion resistance. These properties enable special steels to excel in various applications where superior performance is required, making them essential in numerous industries around the world.
- Q:What are the requirements for special steel used in textile machinery?
- The requirements for special steel used in textile machinery include high strength and durability, excellent corrosion resistance, good wear resistance, and the ability to withstand high temperatures and pressures. Additionally, the steel should have good machinability and be able to maintain dimensional stability under various operating conditions.
- Q:What are the requirements for special steel used in oil and gas equipment manufacturing?
- The requirements for special steel used in oil and gas equipment manufacturing include high strength and corrosion resistance to withstand harsh operating conditions, such as high pressure, temperature, and exposure to corrosive substances. It should also have excellent fatigue resistance and toughness to ensure long-term reliability. Additionally, the steel should be able to maintain its mechanical properties even at low temperatures and possess good weldability for ease of fabrication and assembly. Compliance with industry standards, such as API specifications, is also essential to ensure quality and compatibility with other components.
- Q:How does special steel contribute to improved product performance?
- Special steel contributes to improved product performance by providing enhanced strength, durability, and resistance to wear and corrosion. It offers superior mechanical properties and can withstand extreme temperatures, pressures, and impacts. The use of special steel in manufacturing leads to longer-lasting products, improved efficiency, and enhanced safety. Additionally, its versatility allows for customization and innovation, enabling the creation of more advanced and high-performance products across various industries.
- Q:How does special steel contribute to reducing product rejection rates?
- Special steel contributes to reducing product rejection rates by offering superior strength, durability, and corrosion resistance. It enables manufacturers to produce high-quality products that meet stringent specifications and standards. Special steel's precise composition and unique properties enhance the performance and reliability of the end products, reducing the chances of defects, failures, and rejections.
- Q:How does special steel perform under high-temperature oxidation?
- Special steel is engineered to exhibit outstanding performance when exposed to high temperatures, particularly in terms of oxidation. It is fabricated utilizing alloys that possess a significant quantity of chromium, which generates a shielding chromium oxide layer on the steel's surface once confronted with elevated temperatures. This chromium oxide layer acts as a barrier, thwarting further oxidation and safeguarding the steel against corrosion. The generous amount of chromium present in special steel also heightens its resistance to scaling, which refers to the development of thick layers of oxide on the steel's surface. Scaling can compromise the steel's integrity and result in failure when subjected to high temperatures. Nonetheless, special steel retains its structural soundness even at elevated temperatures due to its capacity to resist scaling. Apart from chromium, special steel may contain additional alloying elements like nickel, molybdenum, and vanadium. These elements contribute to the steel's resistance to high-temperature oxidation by further augmenting the formation and stability of the protective oxide layer. Overall, special steel exhibits exceptional performance under high-temperature oxidation circumstances. Its distinctive composition and alloying elements enable it to establish a protective oxide layer, resist scaling, and retain its strength and integrity even at elevated temperatures. As a result, it is extensively utilized in various industries that involve high-temperature applications, including power generation, aerospace, and petrochemical industries.
- Q:How does special steel perform in high-temperature corrosion?
- Special steel is specifically designed to perform well in high-temperature corrosion environments. It possesses unique properties that make it highly resistant to oxidation and corrosive reactions at elevated temperatures. One of the key factors that contribute to special steel's performance in high-temperature corrosion is its high chromium content. Chromium forms a protective oxide layer on the surface of the steel, known as a passive film, which acts as a barrier against corrosive elements. This passive film is stable even at high temperatures, preventing the steel from undergoing oxidation and corrosion. Additionally, special steel often contains other alloying elements such as nickel, molybdenum, and titanium, which further enhance its resistance to high-temperature corrosion. These elements increase the steel's ability to withstand aggressive chemical environments, such as those encountered in industrial processes involving high temperatures and corrosive substances. Furthermore, special steel is known for its excellent mechanical properties, including high strength and toughness, which enable it to withstand the harsh conditions of high-temperature corrosion. It can maintain its structural integrity and dimensional stability even when exposed to extreme temperatures and corrosive chemicals. Overall, special steel's superior resistance to high-temperature corrosion makes it an ideal choice for various applications in industries such as petrochemical, power generation, and aerospace. Its ability to maintain its performance and durability in challenging environments ensures the longevity and reliability of equipment and structures, ultimately reducing maintenance and replacement costs.
- Q:What are the factors that affect the corrosion resistance of special steel?
- There are several factors that affect the corrosion resistance of special steel. These factors include the composition of the steel, the presence of alloying elements such as chromium or nickel, the surface finish, the pH and temperature of the environment, the presence of corrosive agents such as acids or salts, and the duration of exposure to corrosive conditions. Additionally, factors such as the design and construction of the structure using the special steel can also impact its corrosion resistance.
- Q:How does special steel perform in automotive applications?
- Special steel is often used in automotive applications due to its exceptional performance characteristics. It offers superior strength, durability, and resistance to wear and corrosion, making it an ideal choice for various automotive components. In terms of strength, special steel has a higher tensile strength compared to regular steel, allowing it to withstand heavy loads and impacts. This strength is crucial in automotive applications where components need to endure extreme forces and maintain structural integrity. Special steel also exhibits excellent fatigue resistance, ensuring longevity and reliability in demanding conditions. Moreover, special steel's exceptional durability enables it to withstand harsh environments, such as extreme temperatures, chemicals, and moisture. This durability helps automotive components to maintain their functionality and performance over an extended period. Another significant advantage of special steel in automotive applications is its resistance to wear and corrosion. Automotive components are constantly exposed to friction, abrasion, and corrosive substances. Special steel's high wear resistance allows these components to endure prolonged use without significant degradation. Furthermore, its corrosion resistance protects against rust and other forms of deterioration, preventing premature component failure. Additionally, special steel can be easily shaped and formed into complex designs, enabling automotive manufacturers to create intricate components with precise specifications. This versatility and formability of special steel make it an excellent choice for various automotive applications, including engine parts, suspension systems, chassis components, and exhaust systems. Overall, special steel's exceptional strength, durability, resistance to wear and corrosion, and versatility make it a highly desirable material for automotive applications. Its performance characteristics contribute to improved safety, reliability, and efficiency in vehicles, making special steel an integral part of the automotive industry.
- Q:Are there any international standards for special steel?
- Yes, there are international standards for special steel. The most widely recognized and accepted international standards for special steel are set by the International Organization for Standardization (ISO). ISO develops and publishes a range of standards that cover various aspects of special steel, including composition, properties, testing methods, and quality requirements. These standards ensure that special steel produced by different manufacturers from different countries meet the same minimum quality and performance criteria. In addition to ISO, there are also other organizations and standards bodies that have their own specific standards for special steel, such as the American Society for Testing and Materials (ASTM) and the European Committee for Iron and Steel Standardization (ECISS). These international standards provide a common framework for the production, trade, and use of special steel across different countries and industries, promoting consistency, reliability, and quality assurance.
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Grade AISI 4140,42CrMo, SCM440 Alloy Steel Round Bar
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 m.t
- Supply Capability:
- 10000 m.t/month
OKorder Service Pledge
OKorder Financial Service
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