Grade DIN 20Cr4 CNBM Alloy Steel Round Bar Made in China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 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
You Might Also Like
Specification
Type:
Alloy Steel
Shape:
Steel Round Bar
Product Description
1. Diameter: 8mm-250mm rou
2. Length: 2m, 3m, 5.8m, 6m or customized
3. Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN
4. Produce Process: smelt iron - EAF smelt billet - ESR smelt billet -hot rolled or forged -steel round bar and plate
5. Heat Treatment: annealing, normalizing, tempering, quenching
6. Surface Treatment: Black, Polished, Galvanized
7. Quality Assurance: We accept third party inspection for all orders.
You can ask testing organizations such as SGS, BV, etc. to test our products before shipping.
Chemical Composition
Grade | Dia.(mm) | C | Si | Mn | Cr | P | S | Ni | Cu |
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 |
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 |
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 |
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 |
Application:
Mechanism & Fasteners gear,
Stressed components for vehicles
Engines and machines
Parts of larger cross-section
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.
Packing & Delivery
1. Packaging: seaworthy package or as required
2. Delivery: 35-45 days or based on quantity
Product Show
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.
- Q: How is special steel used in the production of turbine blades?
- Special steel is used in the production of turbine blades due to its exceptional strength, heat resistance, and corrosion resistance properties. This high-quality steel allows turbine blades to withstand the extreme conditions within a turbine, including high temperatures and rotational speeds. Additionally, the unique composition of special steel enables the blades to maintain their shape and structural integrity, ensuring optimal performance and longevity in power generation applications.
- Q: Can special steel be used in the production of cutting tools?
- Yes, special steel can be and is commonly used in the production of cutting tools. Special steel, such as high-speed steel or tool steel, is specifically engineered to have superior hardness, toughness, and wear resistance, making it ideal for manufacturing various types of cutting tools like drills, saw blades, milling cutters, and lathe tools.
- Q: How is high-speed stainless steel used in the production of machining tools?
- High-speed stainless steel is used in the production of machining tools due to its excellent hardness, wear resistance, and heat resistance properties. It allows the tools to operate at high speeds without losing their shape or deteriorating quickly. The stainless steel's corrosion resistance also ensures the longevity of the machining tools, making them suitable for various industrial applications.
- Q: What are the different types of mold steel?
- There are several different types of mold steel used in various industries, including P20, H13, 420, 440C, and S7. These steels have different properties and strengths, making them suitable for specific mold applications such as injection molding, blow molding, and extrusion.
- Q: How does special steel withstand high temperatures?
- Special steel is able to withstand high temperatures due to its unique composition and manufacturing process. It is typically alloyed with elements such as chromium, nickel, and molybdenum, which enhance its heat resistance properties. These alloying elements form stable oxides on the surface of the steel, creating a protective layer that prevents oxidation and corrosion at high temperatures. Additionally, special steel undergoes heat treatment processes like quenching and tempering, which further enhance its strength and ability to retain its structural integrity under extreme heat conditions.
- Q: How does special steel contribute to improving product performance?
- Special steel contributes to improving product performance in several ways. Firstly, special steel has superior strength and durability compared to regular steel, making it more resistant to wear, corrosion, and impact. This increased durability ensures that products made with special steel have a longer lifespan and can withstand harsh conditions, ultimately enhancing their performance and reliability. Additionally, special steel can be tailored to have specific characteristics, such as high temperature resistance or magnetic properties, which can be crucial for certain applications. By using special steel, manufacturers can create products with enhanced functionality, efficiency, and safety, ultimately leading to improved overall performance.
- Q: What are the different surface hardening techniques used for special steel?
- There are several different surface hardening techniques used for special steel, including case hardening, induction hardening, flame hardening, and nitriding. Case hardening involves heating the steel in the presence of a carbon-rich atmosphere to create a hardened outer layer, while induction hardening uses an electromagnetic field to heat and harden specific areas of the steel. Flame hardening involves heating the steel using a high-temperature flame, followed by quenching to achieve hardness. Nitriding is a process where the steel is exposed to nitrogen gas at high temperatures to create a hard, wear-resistant surface layer. Each technique has its own advantages and is chosen based on the specific requirements of the application.
- Q: How does the hardness of special steel affect its machinability?
- The hardness of special steel has a significant impact on its machinability. In general, as the hardness of the steel increases, its machinability decreases. Machinability refers to the ease with which a material can be machined or shaped using various machining processes such as cutting, drilling, or milling. Hardness is a measure of a material's resistance to indentation or scratching. It is typically measured using the Rockwell hardness scale or the Brinell hardness test. Special steel, which is known for its high strength and durability, often has a higher hardness compared to other types of steel. When machining special steel, a harder material poses challenges for several reasons. Firstly, harder materials are more difficult to cut, as they require higher cutting forces and generate more heat during the machining process. This can lead to increased tool wear and shorter tool life, resulting in higher production costs. Secondly, hard steel tends to have lower ductility and toughness, making it more prone to cracking or chipping during machining. This can lead to poor surface finish, dimensional inaccuracies, and even component failure. Moreover, the increased hardness of special steel also affects chip formation. Harder materials tend to produce shorter and more segmented chips, which can cause issues with chip evacuation and tool clogging. This can further hinder the machining process and affect the overall productivity. To improve the machinability of hard special steel, various strategies can be employed. The selection of appropriate cutting tools with specific geometries and coatings designed for hard materials is crucial. Additionally, optimizing cutting parameters such as cutting speed, feed rate, and depth of cut can help reduce the negative effects of hardness on machinability. In conclusion, the hardness of special steel has a direct impact on its machinability. As the hardness increases, the machinability decreases due to increased cutting forces, higher tool wear, reduced ductility, and chip formation challenges. However, with proper tool selection and optimization of cutting parameters, the machinability of hard special steel can be improved, enabling efficient and cost-effective machining processes.
- Q: What are the different non-destructive testing techniques used for special steel?
- There are several non-destructive testing techniques commonly used for special steel. These include magnetic particle testing, ultrasonic testing, radiographic testing, eddy current testing, and liquid penetrant testing.
- Q: What are the different applications of stainless special steel?
- Stainless special steel, which is also known as stainless steel, is a highly versatile material that is used in various industries because of its unique properties. Some examples of the different ways in which stainless special steel is utilized include: 1. Construction: Stainless steel is widely employed in the construction industry due to its exceptional durability and resistance to corrosion. It is used in structural components, bridges, building facades, and roofing materials. 2. Automotive industry: The automotive sector extensively utilizes stainless steel because of its strength, ability to withstand high temperatures, and durability. It can be found in exhaust systems, mufflers, catalytic converters, fuel tanks, and various other components. 3. Medical equipment: Stainless steel is the preferred material in the medical field because of its high resistance to corrosion and biocompatibility. It is used in the production of surgical instruments, implants, orthopedic devices, and medical equipment. 4. Food processing industry: Stainless steel is widely employed in the food industry because of its hygienic properties. It is used in the manufacturing of food processing equipment, storage tanks, food preparation surfaces, and utensils. 5. Aerospace industry: Stainless steel is utilized in the aerospace industry for its strength, ability to withstand high temperatures, and resistance to corrosion. It is used in the production of aircraft parts, engine components, and structural elements. 6. Chemical industry: Stainless steel is highly resistant to corrosion from various chemicals, making it suitable for applications in the chemical industry. It is used in the manufacturing of tanks, pipes, valves, and other equipment that come into contact with corrosive substances. 7. Energy sector: Stainless steel is used in the energy industry for various purposes. It is employed in the construction of power plants, oil and gas refineries, pipelines, and renewable energy systems such as wind turbines and solar panels. 8. Marine industry: Stainless steel is extensively used in marine environments because of its excellent resistance to corrosion. It is used in the production of boat fittings, propellers, underwater structures, and offshore platforms. 9. Household appliances: Stainless steel is commonly used in household appliances because of its attractive appearance, durability, and resistance to stains and scratches. It can be found in kitchen appliances such as refrigerators, ovens, dishwashers, and washing machines. 10. Art and design: Stainless steel is increasingly being employed in art installations, sculptures, and architectural designs because of its aesthetic appeal, versatility, and ability to withstand outdoor conditions. In conclusion, stainless special steel is utilized in a wide range of industries due to its durability, resistance to corrosion, strength, ability to withstand high temperatures, and aesthetic appeal. It plays a crucial role in construction, automotive, medical, food processing, aerospace, chemical, energy, marine, household appliances, and artistic fields.
Send your message to us
Grade DIN 20Cr4 CNBM Alloy Steel Round Bar Made in China
- Ref Price:
-
- Loading Port:
- Shanghai
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 3 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
Similar products
Hot products
Hot Searches
Related keywords
