Steel Round Bar 18CrNiMo7-6 17CrNiMo6
- Ref Price:
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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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Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Steel Round Bar 18CrNiMo7-6 17CrNiMo6
Product Information:
1. Dia.5-50 mm cold drawn,
Dia.12-330 mm hot rolled,
Dia.100-1200 mm forged
2.EAF + LF + VD + Hot rolled or Forged + Annealed / QT (optional)
3.Black / peeled / rough-turned
4.UT SEP1921 Class C/c
5.Application:Heavy-duty arbors, bushings, wear pins, bearings, sprockets, gears and shafts etc. Or can be used for high tensile applications uncarburised but through hardened and tempered.
Good through hardening properties with excellent toughness due to the low carbon and high alloy content, also suitable for Nitriding.
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) |
Product Show:
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- Q: What are the most common alloys used in special steel?
- The most common alloys used in special steel are stainless steel, high-speed steel, tool steel, and carbon steel.
- Q: What are the different methods for improving the machinability of special steel?
- There are several methods for improving the machinability of special steel, including: 1. Alloying: Adding elements such as sulfur, lead, or selenium to the steel composition can enhance machinability by forming brittle compounds that break up chips during machining. 2. Heat treatment: Proper heat treatment, such as annealing or stress relieving, can reduce hardness and improve machinability. 3. Cutting tool selection: Choosing appropriate cutting tools with the right geometry, coatings, and materials can significantly enhance machinability. 4. Lubrication: Using suitable cutting fluids or lubricants during machining can reduce friction, heat generation, and tool wear, thereby improving machinability. 5. Machining parameters optimization: Adjusting cutting speed, feed rate, and depth of cut can optimize chip formation, reduce cutting forces, and enhance machinability. 6. Surface treatments: Applying surface coatings or treatments, such as nitriding or carburizing, can improve the wear resistance and reduce friction, leading to improved machinability. 7. Material selection: Selecting alternative steel grades with inherently better machinability characteristics can be an effective method for improving machinability.
- Q: How does special steel perform in terms of corrosion resistance in marine environments?
- Special steel alloys, specifically designed for marine environments, exhibit excellent corrosion resistance. Due to their higher levels of alloying elements like chromium, nickel, and molybdenum, these steels form a protective oxide layer that prevents rusting and pitting, even when exposed to saltwater and other harsh marine conditions. Their exceptional corrosion resistance ensures prolonged durability, reduced maintenance, and enhanced performance in marine environments.
- Q: How does special steel perform in electrical conductivity applications?
- Special steel, which is also known as stainless steel, offers exceptional electrical conductivity properties in a wide range of applications. It finds extensive use in electrical engineering and electronics owing to its high resistance against corrosion and low electrical resistance. By incorporating specific alloys like chromium and nickel, its conductivity is further enhanced, making it the ideal option for efficient electricity conduction. Within electrical conductivity applications, special steel demonstrates low resistivity, enabling the seamless flow of electrical current with minimal energy loss. Its low resistance plays a vital role in minimizing heat generation, which is crucial for preventing overheating and ensuring the efficient functioning of electrical components. Special steel also possesses outstanding magnetic properties, making it a suitable choice for applications that demand both electrical conductivity and magnetic strength. This attribute proves particularly beneficial in the production of transformers, motors, and generators. Furthermore, special steel boasts exceptional durability and the ability to withstand harsh environmental conditions, making it well-suited for outdoor applications. Its corrosion resistance prevents the formation of rust, ensuring a long lifespan and consistent performance even in challenging environments. In conclusion, special steel is an excellent material for electrical conductivity applications due to its low electrical resistance, high corrosion resistance, and exceptional durability. Its unique properties make it the preferred choice in various industries that rely on efficient and dependable electrical conductivity.
- Q: Is special steel suitable for manufacturing surgical instruments?
- Yes, special steel is suitable for manufacturing surgical instruments. Special steel is often used in the production of surgical instruments due to its high strength, corrosion resistance, and ability to maintain sharpness. It meets the stringent requirements of surgical procedures and ensures durability and reliability in medical settings.
- Q: How are tungsten alloys used in the defense industry?
- Tungsten alloys are extensively used in the defense industry due to their exceptional strength, high density, and excellent resistance to heat and wear. These alloys are commonly utilized in the manufacturing of armor-piercing ammunition, artillery projectiles, and kinetic energy penetrators. Tungsten alloys are also employed in the production of various defense equipment such as missile components, bomb casings, and tank armor. Their ability to withstand extreme conditions and deliver superior performance makes them invaluable in enhancing the effectiveness and protection capabilities of military applications.
- Q: What are the different corrosion protection techniques used for special steel?
- There are several corrosion protection techniques used for special steel, including: 1. Coatings: Applying protective coatings like paints, epoxy, or polyurethane can create a barrier between the steel surface and corrosive elements, preventing direct contact and oxidation. 2. Galvanization: Special steel can be hot-dip galvanized, where a layer of zinc is applied to the surface. This zinc layer acts as a sacrificial anode, corroding in place of the steel and providing protection against corrosion. 3. Cathodic protection: This technique involves connecting the special steel to a sacrificial anode, such as zinc or magnesium, through an electrical circuit. The anode corrodes instead of the steel, extending its lifespan. 4. Passivation: Passivation is a chemical process that removes free iron and other contaminants from the surface of the steel, creating a passive oxide layer that enhances corrosion resistance. 5. Alloying: By adding specific alloying elements like chromium, nickel, or molybdenum to the special steel, its corrosion resistance can be significantly improved. 6. VCI (Volatile Corrosion Inhibitors): VCI techniques involve using chemicals that emit volatile corrosion inhibitors, which form a protective layer on the steel surface, inhibiting corrosion. It is important to assess the specific requirements, environment, and intended application of the special steel in order to select the most suitable corrosion protection technique.
- Q: How does nitriding improve the wear resistance of special steel?
- Nitriding is a surface hardening process that significantly improves the wear resistance of special steel. The process involves the diffusion of nitrogen atoms into the steel's surface, forming a hardened layer called nitride. This nitride layer is exceptionally hard and has a high resistance to wear, making the steel more durable and able to withstand abrasive forces and friction. The improved wear resistance of nitrided special steel is primarily due to the formation of a compound called iron nitride (Fe3N) within the nitride layer. Iron nitride has a high hardness level, typically ranging from 800 to 1000 HV (Vickers hardness). This hardness is significantly higher than the hardness of the steel's base material, contributing to the enhanced wear resistance. Additionally, the nitride layer formed during the nitriding process also increases the surface hardness of the steel. This increased hardness makes the steel more resistant to deformation and indentation, which are common causes of wear in materials subjected to friction and abrasion. Furthermore, the nitride layer acts as a barrier, protecting the underlying steel from chemical reactions, oxidation, and corrosion. This barrier prevents the steel from degrading due to exposure to harsh environments, moisture, and chemicals, thus further enhancing its wear resistance. Overall, nitriding improves the wear resistance of special steel by creating a hardened nitride layer that is exceptionally hard, resistant to wear, and acts as a protective barrier. This process significantly extends the lifespan and durability of the steel, making it ideal for applications that require high wear resistance, such as cutting tools, gears, and automotive components.
- Q: How is special steel used in the production of turbine shafts?
- Special steel is used in the production of turbine shafts due to its high strength, durability, and resistance to corrosion and fatigue. The unique properties of special steel make it ideal for withstanding the extreme conditions and loads experienced by turbine shafts during operation, ensuring efficient and reliable power generation.
- Q: How does special steel contribute to the electrical conductivity of products?
- Special steel contributes to the electrical conductivity of products by offering high levels of purity and low levels of impurities. Its composition and manufacturing process ensure that it has excellent conductivity and minimal resistance, allowing for efficient flow of electric current.
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Steel Round Bar 18CrNiMo7-6 17CrNiMo6
- Ref Price:
-
- Loading Port:
- China main port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 30 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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