3Cr2MnNiMo Tool Steel Special Steel Alloy Steel
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Standard:
AISI,JIS,GB,BS,DIN,API,EN,ASTM
Thickness:
as required
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Extruded,EFW,Spring
Shape:
U Channel,Square,C Channel,Hexagonal,Round
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Steel Grade:
Q195,Q215,Q235,Q215B,Q235B,RHB335,HRB400,200 Series,300 Series,400 Series,600 Series,SS400-SS490,10#,20#,A53(A,B)
Certification:
ISO,SGS,BV,IBR,RoHS,CE,API,BSI,UL
Length:
as required
Net Weight:
as required
Chemical Composition(GB)%
| C | Si | Mn | Cr | Ni | Mo | P | S |
| 0.32-0.40 | 0.20-0.40 | 1.10-1.50 | 1.70-2.00 | 0.85-1.10 | 0.25-0.40 | ≤0.030 | ≤0.030 |
Standard
| GB | ASSAB | DIN | ISO |
| 3Cr2MnNiMo | 718 | 1.2738 | 40CrMnNiMo8-6-4 |
Available Size
| Rolled plate | 12-90mm×610mm×L |
Heat Treatment
| Processing | Temperature ℃ | Hardness |
| Anneal | 690-710 | ≤220HB |
| Quenching | 830-870 | 48-52HRC |
| Tempering | 580-650 | 28-35HRC |
Characterstics
| Characteristics | |||||
| 1.High hardening ability | |||||
| 2.Excellent polishing performance and smoothness |
Applications: Suitable for large size mirror dies,automobile tail lights,domestic electrical applicances,etc
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, Payment Terms?
30% TT as deposit and 70% before delivery.
Irrevocable L/C at sight.
4, Trading Terms?
EXW, FOB, CIF, FFR, CNF
6, After-sale Service?
We 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.
- Q:What are the different tooling grades of special steel?
- Special steel, which possesses specific characteristics and properties, is a type of steel designed and manufactured for various industrial applications. Within this category, there are different tooling grades that have their own unique composition and properties. These grades are specifically engineered to meet the demands of different tooling applications, ensuring optimal performance and durability. There are several common tooling grades of special steel: 1. High-Speed Steel (HSS): HSS is a type of tool steel that has excellent hardness, wear resistance, and heat resistance. It is ideal for high-speed cutting tools like drills, milling cutters, and taps. Even at elevated temperatures, HSS retains its hardness, allowing it to maintain cutting performance without losing its edge. 2. Hot Work Tool Steel: This type of steel is designed to withstand high temperatures and thermal cycling in applications such as hot forging, die casting, and extrusion. It possesses good toughness, high heat resistance, and excellent wear resistance, which enable it to retain its strength and shape even under extreme thermal conditions. 3. Cold Work Tool Steel: Cold work tool steel is primarily used for cutting and forming applications at lower temperatures. It exhibits high hardness, toughness, and wear resistance, making it suitable for applications like blanking, shearing, and cold forming. Cold work tool steel maintains its hardness even under compressive forces, ensuring long-lasting performance. 4. Plastic Mold Steel: Specifically designed for the production of plastic injection molds and related tooling, this type of steel possesses excellent machinability, high polishability, and good wear resistance. It can withstand the demanding conditions encountered during plastic molding processes, ensuring precise and high-quality molding performance. 5. Powder Metallurgy (PM) Steel: PM steel is a tooling grade manufactured using a powder metallurgy process. This method allows for the production of complex shapes, uniform microstructure, and improved properties. PM steels are commonly used in high-performance cutting tools, wear-resistant parts, and high-strength applications. These examples represent just a fraction of the different tooling grades available in special steel. Each grade is carefully engineered to meet the specific requirements of various tooling applications, ensuring optimal performance, durability, and efficiency in different industrial sectors.
- Q:How does the composition of special steel affect its mechanical properties?
- The mechanical properties of special steel are significantly influenced by its composition. Special steel refers to a type of steel that has been altered or mixed with other elements to enhance its strength, toughness, hardness, and other desirable properties. The mechanical properties of special steel can be greatly affected by the addition of various alloying elements, such as manganese, chromium, nickel, molybdenum, vanadium, and tungsten. For instance, the inclusion of chromium can enhance corrosion resistance and hardness, making the steel more suitable for use in harsh environments. Manganese is often added to improve the steel's hardenability and tensile strength. Nickel can increase toughness and strength while maintaining good ductility. The specific mechanical properties of special steel can be achieved by adjusting the amount and combination of these alloying elements. For example, increasing the carbon content can boost the steel's strength and hardness, but it may reduce its ductility. Conversely, reducing the carbon content and introducing elements like nickel and molybdenum can enhance the steel's toughness and resistance to impacts. Moreover, the heat treatment process is crucial in influencing the mechanical properties of special steel. Techniques like quenching and tempering allow for the manipulation of the steel's microstructure to attain desired properties. Quenching involves rapidly cooling the steel to achieve high hardness and strength, while tempering helps reduce brittleness and improve toughness. In conclusion, the mechanical properties of special steel are determined by its composition, including the type and quantity of alloying elements, as well as the heat treatment process. By carefully selecting and controlling these factors, manufacturers can customize special steel to meet specific performance requirements for a wide range of applications.
- Q:What are the advantages of using special steel in manufacturing?
- There are several advantages of using special steel in manufacturing. Firstly, special steel offers a higher level of strength and durability compared to regular steel. This is due to the presence of various alloying elements such as chromium, nickel, and manganese, which enhance the material's mechanical properties. As a result, special steel can withstand heavy loads, resist wear and tear, and endure extreme conditions, making it an ideal choice for manufacturing applications that require high strength and longevity. Secondly, special steel provides excellent corrosion resistance. The addition of alloying elements like chromium forms a protective oxide layer on the surface of the steel, preventing it from rusting or corroding when exposed to moisture or harsh environments. This corrosion resistance is crucial in industries such as marine, automotive, and construction, where the materials are constantly exposed to water, salt, and chemicals. Furthermore, special steel offers exceptional heat resistance and heat transfer properties. These properties are crucial in manufacturing processes that involve high temperatures, such as forging, casting, and heat treatment. Special steel can retain its strength and structural integrity even at elevated temperatures, allowing manufacturers to produce components that need to withstand extreme heat conditions. Another advantage of using special steel in manufacturing is its versatility. Special steel can be easily customized and tailored to meet specific requirements. It can be modified to exhibit various mechanical properties, such as hardness, toughness, or flexibility, depending on the application. This flexibility allows manufacturers to develop components with precise characteristics, ensuring optimal performance and efficiency. Lastly, special steel is often more cost-effective in the long run. Although the initial costs of special steel may be higher than regular steel, its superior durability and longevity result in reduced maintenance and replacement costs. Additionally, the enhanced properties of special steel can lead to improved energy efficiency and reduced material waste, contributing to overall cost savings in the manufacturing process. In conclusion, the advantages of using special steel in manufacturing include increased strength and durability, excellent corrosion resistance, superior heat resistance, versatility, and long-term cost-effectiveness. These benefits make special steel a preferred choice for various industries, ensuring the production of high-quality and reliable components.
- Q:What are the different surface protection methods used for special steel?
- There are several surface protection methods used for special steel to enhance its durability and resistance to various forms of damage. One commonly used method is galvanizing, where a layer of zinc is applied to the surface of the steel. This helps to protect the steel from corrosion and rusting, increasing its lifespan and maintaining its appearance. Galvanizing can be done through hot-dip galvanizing or electroplating, depending on the specific requirements of the steel. Another method is powder coating, which involves applying a dry powder to the steel surface and then curing it in high temperatures. This creates a protective layer that is resistant to chipping, scratching, and fading. Powder coating is often used for aesthetic purposes as it provides a wide range of color options and can improve the steel's appearance. Additionally, special steel can be protected using various types of paints and coatings. These coatings can be applied through spray or brush, and they provide a barrier against corrosion, chemicals, and UV radiation. Epoxy, polyurethane, and acrylic coatings are commonly used for this purpose, depending on the specific needs and environment the steel will be exposed to. Furthermore, stainless steel is inherently resistant to corrosion due to its composition, but it can be further protected by passivation. Passivation is a chemical treatment that removes iron particles from the surface, preventing corrosion and enhancing the steel's resistance to staining and pitting. Lastly, special steel can also be protected by applying a layer of ceramic or enamel coating. These coatings provide a high level of resistance to heat, chemicals, and physical abrasion. They can be applied through spraying or dipping and are often used in environments where the steel will be exposed to extreme conditions or aggressive substances. In conclusion, the different surface protection methods used for special steel include galvanizing, powder coating, painting, passivation, and ceramic/enamel coating. These methods aim to enhance the steel's durability, resistance to corrosion, and overall lifespan, ensuring that it can withstand various environmental factors and maintain its structural integrity.
- Q:What are the different types of corrosion that special steel can encounter?
- Special steel can encounter various types of corrosion, including general corrosion, localized corrosion such as pitting and crevice corrosion, galvanic corrosion due to the contact with dissimilar metals, intergranular corrosion along grain boundaries, and stress corrosion cracking caused by the combined effect of tensile stress and corrosive environment.
- Q:What are the properties of nitriding steel?
- Nitriding steel is a specialized process used to enhance the surface hardness and wear resistance of steel. The properties of nitriding steel include improved surface hardness, increased resistance to wear, improved fatigue strength, enhanced corrosion resistance, and reduced coefficient of friction. This process forms a hard nitride layer on the surface of the steel, making it suitable for applications in industries such as automotive, aerospace, and manufacturing, where durability and performance are crucial.
- Q:How does special steel contribute to the agriculture industry?
- Special steel contributes to the agriculture industry by providing durable and high-performance materials for various agricultural machinery and equipment. It is used in the manufacturing of tractor parts, plows, harvesters, and other farm implements. The strength and resistance to wear and tear of special steel enhance the efficiency and longevity of these tools, ultimately improving productivity and yield in the agriculture sector.
- Q:What are the different methods of surface polishing for special steel?
- There are several methods of surface polishing for special steel, each with its own advantages and applications. Some of the commonly used methods include mechanical polishing, electrochemical polishing, and chemical polishing. 1. Mechanical Polishing: This method involves the use of abrasive materials to remove surface imperfections and create a smooth and reflective surface. It can be done manually or using automated polishing machines. Mechanical polishing is effective for removing scratches, dents, and other surface defects. It is commonly used in industries such as automotive, aerospace, and precision engineering. 2. Electrochemical Polishing: Also known as electrolytic polishing, this method uses an electrolyte solution and an electric current to dissolve and remove surface material. Electrochemical polishing can provide a high level of surface smoothness and can be particularly useful for complex shapes and hard-to-reach areas. It is commonly used in industries such as medical devices, semiconductors, and jewelry manufacturing. 3. Chemical Polishing: This method involves the use of chemical solutions to selectively remove surface material and create a smooth finish. Chemical polishing is effective for removing oxide layers, stains, and contaminants. It is often used for stainless steel and other corrosion-resistant alloys. The process involves immersing the steel in a chemical bath and controlling factors such as temperature, concentration, and time to achieve the desired surface finish. 4. Electropolishing: Electropolishing is an electrochemical process that combines the benefits of electrochemical and chemical polishing. It involves the application of an electric current to remove surface material while simultaneously dissolving it in an electrolyte solution. Electropolishing can provide a highly smooth, clean, and corrosion-resistant surface finish. It is commonly used for stainless steel and other alloys in industries such as pharmaceutical, food processing, and semiconductor manufacturing. 5. Vibratory Polishing: This method utilizes vibrating media, such as ceramic chips or abrasive pellets, along with a polishing compound to remove surface imperfections. The steel parts are placed in a vibratory tumbler or bowl where the continuous movement causes the media to rub against the parts, resulting in a polished surface. Vibratory polishing is commonly used for small or delicate parts and can be an efficient and cost-effective method. Overall, the choice of surface polishing method for special steel depends on factors such as the desired surface finish, part geometry, material properties, and industry requirements. It is important to consider these factors and consult with experts or specialists to determine the most suitable method for a specific application.
- Q:How is special steel used in the production of injection molds?
- Special steel is widely used in the production of injection molds due to its unique properties that make it highly suitable for this application. Injection molds are used in the manufacturing of various plastic and metal products through the injection molding process. One of the key reasons for using special steel in injection molds is its excellent heat resistance. During the injection molding process, the molten material is injected into the mold under high pressure and temperature. Special steel can withstand these high temperatures without warping or losing its shape, ensuring the accuracy and precision of the final product. Additionally, special steel has exceptional hardness and wear resistance. The repeated use of injection molds can subject them to significant wear and tear, which can cause dimensional inaccuracies and affect the quality of the molded products. By using special steel, which is specifically designed to be highly resistant to wear, the lifespan of the injection molds is prolonged, ensuring consistent and high-quality production. Special steel also offers good machinability, allowing for intricate and complex mold designs to be accurately manufactured. This enables the production of molds with precise details and intricate geometries, which is crucial for manufacturing complex plastic or metal parts. Furthermore, special steel provides excellent surface finish to the molded products. The smooth and polished surface of the injection molds made from special steel ensures that the final products have a high-quality finish as well. In summary, special steel is extensively used in the production of injection molds due to its exceptional heat resistance, hardness, wear resistance, machinability, and surface finish. These properties make it an ideal material for ensuring accurate and precise manufacturing of plastic and metal products through the injection molding process.
- Q:How does special steel contribute to the automotive safety?
- Special steel, such as high-strength steel, plays a crucial role in enhancing automotive safety. It is used in various components of vehicles, including the chassis, body structure, and safety systems, to provide superior strength and durability. This type of steel helps improve crashworthiness by absorbing and distributing impact energy, reducing the risk of passenger injury. Additionally, special steel helps optimize the weight-to-strength ratio of vehicles, allowing manufacturers to design lighter yet safer cars that offer improved fuel efficiency and handling.
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3Cr2MnNiMo Tool Steel Special Steel Alloy Steel
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 25 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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