EN19/30CrMo A30302 /4130/SCM430/25CrMo4 1.7218 alloy structural steel round bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
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Specification
EN19/30CrMo(A30302)/4130/SCM430/25CrMo4(1.7218) alloy structural steel round bar
Name | Steel Round Bar |
Shape | Round Bar/Square Bar/Flat Bar/Plate/Wire |
Standard | GB/ASTM/SAE/AISI/DIN/JIS/EN/BS |
Surface Treatment: | Black/Peeling/Polished/Machined |
Delivery Condition: | Hot Rolled or Forged/Peeled or Black Surface |
Test | SGS/UT 100% Elements Testing |
Certificate: | ISO/Mill Certificate |
Service: | 24 hours online service / |
more than 20 years trading and manufacture | |
Quality Assurance: | the third party inspection, such as SGS, BV, TUV…etc. is acceptable |
Packaging Details: | seaworthy packaging or as per customer's packing instruction |
Chemical Composition
C | Si | Mn | Cr | Mo | P | S | Cu | Ni |
0.26-0.34 | 0.17-0.37 | 0.40-0.70 | 0.80-1.10 | 0.15-0.25 | ≤ 0.035 | ≤0.035 | ≤0.30 | ≤0.30 |
Mechanical Properties
Tensile strength | Yield strength | Elongation rate | Contractibility rate | Hardness | Impact energy |
≥930MPa | ≥785MPa | ≥12% | ≥50% | ≤229 | ≥63J |
Packaging & Delivery
Packaging Detail | Sea worthy packing /as per customer's packing instruction |
Delivery Detail | 15 ~ 40 days after receiving the deposit |
Product Show
Workshop
FAQ
Are you a trading company or manufacturer? | Manufacturer |
What’s the MOQ? | 3 metric ton |
What’s your delivery time? | 15-35 days after downpayment received |
Do you Accept OEM service? | Yes |
what’s your delivery terms? | FOB/CFR/CIF |
What's the Payment Terms? | 30% as deposit,70% before shipment by T/T |
Western Union acceptable for small amount. | |
L/C acceptable for large amount. | |
Scrow ,Paybal,Alipay are also ok | |
Why choose us? | Chose happens because of quality, then price, We can give you both. |
Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals. | |
What's your available port of Shipment? | Main Port, China |
What’s your featured services? | Our service formula: good quality+ good price+ good service=customer's trust |
Where are your Market? | Covering more than 160 countries in the world |
Special steel and there is no uniform definition of the concept of special steel is generally considered to have a special chemical composition (alloying), using a special production process, with a special organization and performance to meet the special needs of the steel type. Compared with ordinary steel, special steel has a higher strength and toughness, physical properties, chemical properties, biocompatibility and process performance.
China and Japan, the EU definition of special steel closer, into the special steel quality carbon steel, alloy steel, high alloy steel (alloying elements greater than 10%) three categories, including steel and high-alloy special steel production accounted for 70%. The main advantages of special steel carbon structural steel, carbon tool steel, carbon spring steel, alloy spring steel, alloy steel, ball bearing steel, alloy tool steel, high alloy tool steel, high speed tool steel, stainless steel, heat-resistant steel , and high-temperature alloys, precision alloy, electric alloy. There are nearly 2,000 special steel grades, about 50,000 varieties and specifications in the world currently. In addition to a wide range of special steel outside, in the specification with ordinary steel also showed different characteristics. In addition to plates, tubes, wire, strip, rods and profiles outside, as well as composite materials, surface alloying material, surface treatment material, forging materials, precision casting, powder metallurgy products.
- Q: What are the different methods for improving the toughness of tool steels used in special steel?
- There are several methods available for improving the toughness of tool steels used in special steel applications. These methods are aimed at enhancing the resistance of the steel to fracture and increasing its ability to absorb energy without undergoing brittle failure. Some of the different methods for improving the toughness of tool steels include: 1. Alloying: The addition of specific alloying elements such as chromium, molybdenum, vanadium, and tungsten can significantly enhance the toughness of tool steels. These alloying elements form carbides within the steel matrix, which helps to improve its toughness. 2. Heat treatment: Proper heat treatment can greatly improve the toughness of tool steels. Processes such as quenching and tempering are commonly employed to achieve the desired level of toughness. Quenching involves rapidly cooling the steel from high temperatures, resulting in a hardened structure. Tempering follows quenching and involves reheating the steel to a specific temperature and then cooling it slowly. This process helps to relieve internal stresses and increases toughness. 3. Controlled cooling rates: By controlling the cooling rate during heat treatment, it is possible to optimize the toughness of tool steels. Slow cooling rates allow for the formation of a more uniform microstructure, leading to improved toughness. 4. Grain refinement: Refining the grain size of the steel can enhance its toughness. This can be achieved through processes such as hot working, controlled rolling, or adding grain refining elements like titanium or zirconium. 5. Surface treatments: Certain surface treatments, such as shot peening or nitriding, can improve the toughness of tool steels. Shot peening involves bombarding the surface of the steel with small metal or ceramic particles, inducing compressive residual stresses that enhance toughness. Nitriding involves diffusing nitrogen into the surface of the steel, forming a hard and wear-resistant layer that improves toughness. 6. Cryogenic treatment: Cryogenic treatment involves subjecting the tool steel to extremely low temperatures, typically below -100°C (-148°F), for an extended period. This process helps to refine the microstructure and reduce residual stresses, leading to improved toughness. 7. Powder metallurgy: Powder metallurgy techniques, such as hot isostatic pressing or sintering, can produce tool steels with improved toughness. By using a fine powder and applying high pressure and temperature, a more uniform and fine-grained microstructure can be achieved, resulting in increased toughness. Overall, the selection and combination of these methods depend on the specific requirements of the tool steel and the intended application. By carefully considering these techniques, manufacturers can enhance the toughness of tool steels, ensuring their suitability for demanding special steel applications.
- Q: How is magnetic stainless steel used in the production of magnetic components?
- Magnetic stainless steel is commonly used in the production of magnetic components due to its unique combination of corrosion resistance and magnetic properties. It is particularly suitable for applications where both strength and resistance to oxidation are required. The stainless steel is typically formed into various shapes and sizes, such as rods or sheets, and then processed into the desired magnetic component. This can include items like magnets, transformer cores, or magnetic shielding components. The magnetic properties of the stainless steel facilitate efficient magnetization, making it a valuable material for the production of magnetic components in various industries.
- Q: What are the main advantages of using special steel in the marine industry?
- The main advantages of using special steel in the marine industry include its high strength and corrosion resistance, which are crucial for withstanding the harsh marine environment. Special steel also offers excellent weldability and formability, enabling the construction of complex structures and components. Additionally, its durability and long service life contribute to reduced maintenance and replacement costs.
- Q: What are the different surface treatment methods for special steel?
- Some of the different surface treatment methods for special steel include heat treatment, plating, coating, and nitriding. Heat treatment involves heating and cooling the steel to improve its hardness, strength, and ductility. Plating involves applying a thin layer of metal, such as zinc or chrome, to enhance corrosion resistance. Coating methods like painting or powder coating provide a protective layer and can improve aesthetics. Nitriding involves introducing nitrogen to the steel's surface to increase hardness and wear resistance.
- Q: What are the requirements for special steel used in surgical instruments?
- Meeting the stringent requirements for special steel used in surgical instruments is crucial due to their critical role in medical procedures. Above all else, the steel must exhibit exceptional corrosion resistance to endure repeated exposure to body fluids and sterilization chemicals. This guarantees that the instruments remain durable, hygienic, and safe for use. Another indispensable requirement is high strength and hardness, enabling surgical instruments to withstand the forces exerted during procedures without bending, breaking, or losing sharpness. Moreover, the steel should possess outstanding wear resistance, maintaining its cutting edge for an extended period and minimizing the need for frequent sharpening or replacement. Biocompatibility is also a pivotal factor for surgical instruments. The steel must not elicit adverse reactions when in contact with living tissue or fluids, thus reducing the risk of infection or complications for patients. This necessitates the absence of harmful elements or impurities that could trigger allergic responses or toxicity. Furthermore, the steel used in surgical instruments must be highly sterilizable. It should withstand high temperatures during autoclaving or other sterilization methods without significant alterations to its physical or mechanical properties. Lastly, the steel should be easily workable, facilitating precision manufacturing processes like forging, machining, and polishing to create intricate instrument designs. This guarantees that surgical instruments possess the necessary shape, size, and surface finish to effectively perform specific tasks. Overall, the requirements for special steel used in surgical instruments encompass corrosion resistance, strength, hardness, wear resistance, biocompatibility, sterilizability, and workability to ensure the instruments meet the exacting standards of the medical field.
- Q: How does special steel perform in automotive applications?
- Special steel performs exceptionally well in automotive applications due to its unique properties and characteristics. It offers superior strength, durability, and resistance to wear and corrosion, making it highly suitable for critical components such as engine parts, chassis, and suspension systems. Special steel also enables the production of lightweight designs, enhancing fuel efficiency and reducing emissions. Additionally, its high heat resistance and thermal conductivity contribute to improved performance and safety in extreme conditions. Overall, the use of special steel in automotive applications ensures enhanced reliability, performance, and longevity of vehicles.
- Q: Can special steel be used in the production of kitchen utensils?
- Yes, special steel can be used in the production of kitchen utensils. Special steel is a term used to describe steel alloys that have specific properties and characteristics, such as resistance to corrosion, high strength, and durability. These properties make special steel suitable for various applications, including the production of kitchen utensils. Kitchen utensils need to withstand regular use, exposure to water, and high temperatures. Special steel, such as stainless steel, is commonly used in the production of kitchen utensils due to its corrosion resistance and ability to withstand heat. Stainless steel utensils are known for their durability, resistance to rust, and ease of cleaning. In addition to stainless steel, there are other types of special steel that can be used in the production of kitchen utensils. For example, high carbon steel is commonly used in the production of chef knives due to its ability to maintain a sharp edge and its strength. Titanium-coated steel utensils are also available, providing additional benefits such as non-stick properties and enhanced durability. Overall, special steel is a versatile material that can be used in the production of a wide range of kitchen utensils. Its properties make it an excellent choice for manufacturers looking to produce durable and high-quality products that can withstand the demands of everyday use in the kitchen.
- Q: Can special steel be used in the plastic manufacturing industry?
- Yes, special steel can be used in the plastic manufacturing industry. Special steel is often used for making molds and dies, which are critical components in the plastic manufacturing process. These molds and dies need to be strong, durable, and able to withstand high temperatures and pressures. Special steel, such as tool steel or stainless steel, can provide the necessary properties to ensure the quality and longevity of plastic manufacturing equipment.
- Q: How does special steel contribute to improved product performance?
- There are multiple ways in which special steel contributes to enhancing product performance. Firstly, special steel is renowned for its outstanding strength and durability. This means that products made from special steel can withstand heavy loads, high temperatures, and harsh environments without distorting or fracturing. As a result, the extended strength and durability of special steel lead to a longer lifespan for the product and reduced maintenance needs. Moreover, special steel possesses remarkable resistance to corrosion. It is less prone to rust and other types of corrosion, making it the perfect choice for products that are exposed to moisture or chemicals. This corrosion resistance ensures that the product remains in optimal condition, even in corrosive surroundings, and minimizes the need for frequent replacements. Additionally, special steel offers superior heat resistance. It can endure extreme temperatures without compromising its mechanical properties, such as strength and hardness. This attribute makes it suitable for products that operate in high-temperature conditions, including engines, turbines, and exhaust systems. The ability of special steel to retain its properties at elevated temperatures significantly enhances product performance and reliability. Furthermore, special steel can be customized to meet specific requirements through the utilization of different alloying elements and heat treatment processes. This customization enables manufacturers to finely adjust the material properties to suit the intended application, thereby resulting in improved product performance. For instance, by modifying the alloying elements, special steel can exhibit enhanced wear resistance, impact resistance, or hardness, depending on the desired application. To summarize, special steel contributes to improved product performance by offering exceptional strength, durability, corrosion resistance, heat resistance, and customization options. These properties not only extend the lifespan of the product but also enhance its reliability and performance in challenging conditions, ultimately benefiting the end-users.
- Q: Can special steel be used in the manufacturing of precision instruments?
- Yes, special steel can be used in the manufacturing of precision instruments. Special steel refers to a category of steel that has been specifically designed and processed to possess certain properties, such as high strength, hardness, corrosion resistance, and thermal stability. These properties make special steel ideal for applications where precision and accuracy are crucial, such as in the manufacturing of precision instruments. Precision instruments, such as surgical tools, measuring devices, optical instruments, and scientific equipment, require materials that can maintain dimensional stability and withstand extreme conditions. Special steels, such as stainless steel, tool steel, and high-speed steel, offer excellent mechanical properties, including high tensile strength, wear resistance, and dimensional stability. This makes them well-suited for precision instrument manufacturing. Furthermore, special steel can be engineered to have specific characteristics, such as low magnetic permeability or excellent resistance to temperature changes. These properties are particularly important in precision instruments where magnetic interference or temperature variations can affect their performance. In conclusion, special steel can indeed be used in the manufacturing of precision instruments due to its exceptional mechanical properties, dimensional stability, and ability to withstand extreme conditions. Its versatility allows for the production of high-quality precision instruments that meet the stringent requirements of various industries, including medical, scientific, and engineering fields.
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EN19/30CrMo A30302 /4130/SCM430/25CrMo4 1.7218 alloy structural steel round bar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 3 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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