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
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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: Is special steel suitable for manufacturing surgical instruments?
- Indeed, surgical instruments can be manufactured using special steel. Known as stainless steel, this type of steel is commonly utilized in the production of surgical instruments owing to its distinct characteristics. Its ability to resist corrosion is crucial in a surgical environment where instruments frequently encounter bodily fluids. Furthermore, special steel is resilient and can endure repeated sterilization procedures without compromising its functionality or structural integrity. Additionally, its non-magnetic properties make it appropriate for applications in MRI and other medical imaging procedures. In summary, special steel possesses the essential attributes necessary for the production of surgical instruments, guaranteeing their dependability, durability, and safety for both medical professionals and patients.
- Q: How does special steel perform in high-vibration environments?
- Special steel performs well in high-vibration environments due to its exceptional strength, durability, and ability to dampen vibrations. Its unique composition and heat treatment make it highly resistant to fatigue, reducing the risk of fractures or failures caused by constant vibrations. Additionally, special steel's excellent hardness and toughness properties allow it to maintain its structural integrity and performance even under severe vibration conditions.
- Q: How does special steel perform in pharmaceutical applications?
- Due to its unique properties and characteristics, special steel is highly sought after in pharmaceutical applications. Its exceptional corrosion resistance is especially important in pharmaceutical environments where chemical substances and aggressive cleaning agents are commonly used. This corrosion resistance ensures the steel remains durable and maintains its integrity over time. Furthermore, special steel is renowned for its strength and durability, making it suitable for applications that involve heavy loads or frequent use. This strength allows the steel to withstand the demanding requirements of pharmaceutical processes, such as mixing, grinding, and sterilization, without compromising its structural integrity. Another significant advantage of special steel in pharmaceutical applications is its hygienic properties. It is highly resistant to bacterial growth and easy to clean, making it perfect for environments where cleanliness and sterility are of utmost importance. The smooth surface of special steel prevents the accumulation of dirt, bacteria, and other contaminants, reducing the risk of contamination and ensuring the safety and quality of pharmaceutical products. Moreover, special steel offers excellent temperature resistance, enabling it to endure extreme temperatures and thermal cycling commonly encountered in pharmaceutical processes. This thermal stability guarantees that the steel retains its mechanical properties and dimensional stability, even under fluctuating temperature conditions. Overall, special steel's corrosion resistance, high strength, hygienic properties, and temperature resistance make it a trustworthy and versatile material for pharmaceutical applications. Its exceptional performance in these challenging environments contributes to the production of safe and high-quality pharmaceutical products.
- Q: How is case-hardening steel used in the manufacturing of gears?
- Case-hardening steel is used in the manufacturing of gears to increase their surface hardness while maintaining a tough and durable core. This process involves heating the gear in the presence of a carbon-rich gas or by immersing it in a carbon-rich environment. The carbon diffuses into the outer layer of the steel, creating a hardened surface. This hardened layer provides enhanced wear resistance and significantly extends the lifespan of the gear, making it suitable for demanding applications where gears experience high loads and friction.
- Q: What are the environmental benefits of using special steel?
- Special steel, also known as alloy steel, offers several environmental benefits. Firstly, it has a longer lifespan compared to conventional steel, reducing the need for frequent replacements and minimizing the associated resource consumption and waste generation. Secondly, special steel is often manufactured using recycled materials, thereby reducing the demand for new raw materials and the energy required for extraction and processing. Additionally, its high strength and durability enable the production of lighter structures and components, leading to lower transportation and fuel consumption. Lastly, special steel can be recycled at the end of its life, further reducing waste and the environmental impact associated with its disposal.
- Q: How does special steel contribute to the safety of infrastructure?
- Special steel contributes to the safety of infrastructure by providing enhanced strength, durability, and resistance to corrosion. This type of steel is specifically designed and manufactured to withstand extreme conditions and load-bearing requirements, making it ideal for critical infrastructure components such as bridges, buildings, and pipelines. The use of special steel ensures that these structures can withstand natural disasters, heavy traffic, and other potential threats, reducing the risk of collapse or failure and enhancing overall safety for users and communities.
- Q: How does special steel comply with international standards?
- Special steel is a type of steel that is specifically designed and manufactured to possess exceptional properties and performance characteristics. When it comes to complying with international standards, special steel undergoes a rigorous process to ensure its quality and adherence to the established norms. Firstly, special steel production adheres to international standards through the selection of raw materials. The composition and quality of the raw materials used in the manufacturing process are carefully controlled and tested to meet the specifications outlined by international standards organizations. This ensures that the special steel produced is of the desired quality and possesses the required mechanical properties. Secondly, special steel manufacturers follow standardized production processes. These processes are designed in accordance with international guidelines and standards to guarantee consistency and traceability. Through the use of advanced technologies and quality control measures, special steel manufacturers can monitor and control every stage of production, from melting and casting to rolling and heat treatment. This ensures that the final product meets the required standards in terms of chemical composition, mechanical properties, and dimensional tolerances. Furthermore, special steel undergoes stringent testing and inspection procedures to validate its compliance with international standards. This includes various destructive and non-destructive testing methods such as ultrasonic testing, hardness testing, and microstructure analysis. These tests are conducted by certified laboratories and independent third-party agencies to ensure unbiased and accurate results. In addition, special steel manufacturers often have their production processes and quality management systems audited and certified by recognized bodies, such as ISO (International Organization for Standardization), to demonstrate their commitment to compliance with international standards. It is also worth mentioning that special steel manufacturers actively participate in international standardization committees, such as ASTM International and the International Organization for Standardization (ISO). By engaging in these committees, they can contribute to the development and revision of international standards, ensuring that their products remain up to date and in line with the latest industry requirements. In conclusion, special steel complies with international standards through careful selection of raw materials, adherence to standardized production processes, rigorous testing and inspection procedures, and active participation in international standardization committees. By following these measures, special steel manufacturers demonstrate their commitment to producing high-quality products that meet the stringent requirements of international standards.
- Q: How does special steel perform in high-temperature creep resistance?
- Special steel has excellent performance in high-temperature creep resistance. It is specifically designed to withstand prolonged exposure to elevated temperatures without undergoing excessive deformation. This is achieved through the addition of alloying elements and a careful heat treatment process, which help to enhance the steel's strength, stability, and resistance to creep. Special steel's superior creep resistance makes it a reliable choice for applications that involve high temperatures and long-term stress, ensuring the structural integrity and durability of the material.
- Q: How does special steel contribute to the manufacturing of defense equipment?
- Special steel plays a crucial role in the manufacturing of defense equipment due to its exceptional properties. It provides enhanced strength, durability, and resistance to extreme conditions, making it ideal for critical components such as armor plates, missile casings, or aircraft parts. Special steel's ability to withstand high temperatures, impacts, and corrosion ensures the reliability and longevity of defense equipment, ultimately enhancing the safety and effectiveness of military operations.
- Q: What are the main challenges in machining special steel?
- The main challenges in machining special steel include its high hardness and low machinability, which make it difficult to cut and shape. Special steels also have a tendency to work harden, causing tools to wear out quickly. Additionally, special steels often contain alloying elements that can lead to heat build-up during machining, requiring careful selection of cutting parameters and cooling methods.
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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
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