Gr40 Ribbed High Quality Steel Rebar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 170 m.t.
- Supply Capability:
- 500000 m.t./month
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Specification
Gr40 Ribbed High Quality Steel Rebar
Description of Gr40 Ribbed High Quality Steel Rebar
1, Diameter: 5.5mm-10mm Gr40 Ribbed High Quality Steel Rebar
10m- 40mm Gr40 Ribbed High Quality Steel Rebar
2, Length: 6m, 9m, 12m or customized
3, Standard: GB, ASTM, AISI, SAE, DIN, JIS, EN
OEM technology - send detailed technical parameters for accurate quotation.
2, Produce Process: smelt iron - EAF smelt billet - ESR smelt billet -
hot rolled or forged to get the steel round bar and plate
3, Heat Treatment: annealing, normalizing, tempering, quenching
4, Surface Treatment: Black
5, 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 of Gr40 Ribbed High Quality Steel Rebar
Grade | Technical data of the original chemical composition(%) | |||||
Reinforcing steel bar HRB335 | C | Mn | Si | S | P | B |
≤0.25 | ≤1.60 | ≤0.80 | ≤0.045 | ≤0.045 | >0.0008 | |
Physics Capability | ||||||
Yield Strength(N/cm2) | Tensile Strength(N/cm2) | Elongation(%) | ||||
≥ 335 | ≥490 | ≥16 | ||||
Reinforcing steel bar HRB400 | C | Mn | Si | S | P | B |
≤0.25 | ≤0.16 | ≤0.80 | ≤0.045 | ≤0.045 | 0.04-0.12 | |
Physics Capability | ||||||
Yield Strength(N/cm2) | Tensile Strength(N/cm2) | Elongation(%) | ||||
≥ 400 | ≥ 570 | ≥ 14 | ||||
Products Show of Gr40 Ribbed High Quality Steel Rebar
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.
F A Q
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 does special steel perform in extreme environments?
- Special steel is specifically designed to perform exceptionally well in extreme environments. It has superior resistance to corrosion, high temperatures, and pressure, making it highly reliable and durable. This type of steel can withstand harsh conditions such as extreme cold, intense heat, and corrosive chemicals, ensuring optimal performance and longevity even in the most challenging environments.
- Q: How does special steel perform in stamping applications?
- The unique properties of special steel make it an excellent choice for stamping applications. Its high strength and durability ensure that it can withstand wear and tear during the stamping process, resulting in longer tool life and reduced maintenance costs. Additionally, special steel's heat resistance allows it to maintain its structural integrity even at high temperatures, preventing warping or deformation. Its exceptional dimensional stability ensures precise and consistent results, while its excellent formability allows for the creation of intricate designs. Overall, special steel's properties make it a reliable and versatile option for a wide range of stamping applications.
- Q: What are the different surface defects in special steel?
- Some common surface defects in special steel include scale, pits, scratches, cracks, and inclusions. Scale refers to the formation of oxide layers on the surface, while pits are small depressions caused by corrosion or mechanical damage. Scratches can occur during handling or processing, while cracks are often due to excessive stress or improper heat treatment. Inclusions are foreign particles or impurities embedded in the steel, which can impact its overall quality and performance.
- Q: What are the main factors affecting the corrosion resistance of special steel?
- The corrosion resistance of special steel can be influenced by several key factors. To begin with, the composition of the steel is pivotal in determining its ability to resist corrosion. Special steels often contain alloying elements like chromium, nickel, and molybdenum, which create a protective oxide layer on the steel's surface. This layer acts as a barrier, preventing corrosive substances from reaching the steel and causing damage. The higher the percentage of these alloying elements, the stronger the corrosion resistance of the steel. Another significant factor is the presence of impurities or contaminants in the steel. Impurities like sulfur or phosphorous can compromise the protective oxide layer, making the steel more vulnerable to corrosion. Therefore, it is crucial to ensure the purity of the steel and implement appropriate manufacturing processes to maintain good corrosion resistance. The surface finish of the steel also plays a role in its corrosion resistance. A smooth and polished surface minimizes the areas where corrosive substances can gather and penetrate the steel, thereby reducing the chances of corrosion. Surface treatments like passivation or coating can further enhance the corrosion resistance of special steel. Moreover, the environment in which the steel is exposed is a critical factor. Different environments contain varying levels of corrosive substances such as moisture, acids, or salts, which can accelerate the corrosion process. Marine environments, for example, with their high salt content, are particularly corrosive and demand special steel grades with superior resistance to such conditions. Finally, the operating temperature of the steel can impact its corrosion resistance. Certain special steels, like stainless steel, exhibit excellent resistance to corrosion at elevated temperatures, making them suitable for high-temperature applications where other materials may corrode. To summarize, the corrosion resistance of special steel is influenced by factors such as composition, impurities, surface finish, environment, and operating temperature. By considering these factors and selecting the appropriate steel grade, one can ensure optimal corrosion resistance for specific applications.
- Q: What are the different certifications available for special steel?
- There are several certifications available for special steel, including ISO 9001, ISO 14001, ISO/TS 16949, and AS9100. These certifications ensure that the steel meets specific quality standards, environmental management practices, automotive industry requirements, and aerospace industry standards, respectively.
- Q: Can special steel be used in the electronics industry?
- Yes, special steel can be used in the electronics industry. It is often utilized for manufacturing various components and tools in electronic devices due to its desirable properties such as high strength, corrosion resistance, and thermal conductivity.
- Q: Can special steel be used in the renewable energy sector?
- Yes, special steel can be used in the renewable energy sector. Special steel, also known as alloy steel, offers enhanced properties such as high strength, durability, and corrosion resistance, making it suitable for various applications in renewable energy technologies. In wind energy, special steel is utilized for manufacturing wind turbine components. Wind turbine towers require strong and lightweight materials to withstand the dynamic loads and harsh environmental conditions. Special steel alloys, such as high-strength low-alloy (HSLA) steel, provide the necessary strength-to-weight ratio, ensuring the structural integrity of wind turbine towers. Solar energy systems also benefit from special steel. Concentrated solar power (CSP) plants utilize mirrors or lenses to focus sunlight, generating intense heat for electricity generation. Special steel alloys with high thermal conductivity and resistance to high temperatures are used in the construction of these components, ensuring efficient energy capture and durability. Moreover, special steel is employed in the manufacturing of hydroelectric power generation equipment. Turbine components, such as blades, shafts, and runners, require materials with high strength and resistance to erosion and cavitation. Special steel alloys, such as stainless steel and tool steel, possess these characteristics, ensuring the longevity and reliability of hydroelectric power systems. In summary, special steel finds numerous applications in the renewable energy sector. Its properties, including high strength, durability, and corrosion resistance, make it suitable for wind energy, solar energy, and hydroelectric power generation. By using special steel, the renewable energy sector can enhance the performance, efficiency, and lifespan of various renewable energy technologies.
- Q: What are the different surface treatments applied to special steel?
- There are several different surface treatments that can be applied to special steel to enhance its properties and improve its performance. Some of the commonly used surface treatments include: 1. Heat treatment: This is a process that involves heating the steel to a specific temperature and then cooling it at a controlled rate. Heat treatment can be used to improve the hardness, strength, and toughness of the steel, as well as to enhance its resistance to wear and corrosion. 2. Coating: Coating the surface of special steel with a protective layer is another common surface treatment. This can be done using various methods such as electroplating, hot-dip galvanizing, or powder coating. Coatings can provide additional resistance to corrosion, improve the appearance of the steel, and increase its lifespan. 3. Nitriding: Nitriding is a process that involves diffusing nitrogen into the surface of the steel, typically at high temperatures. This forms a hard surface layer that improves the wear resistance and fatigue strength of the steel, while maintaining the core toughness. 4. Shot peening: Shot peening is a mechanical surface treatment that involves bombarding the steel surface with small spherical particles, typically made of steel or ceramic. This process induces compressive stresses in the surface layer, which improves the fatigue strength and resistance to stress corrosion cracking. 5. Passivation: Passivation is a chemical treatment that is used to remove impurities and contaminants from the surface of the steel, typically by immersing it in an acid solution. This process helps to restore the natural corrosion resistance of stainless steel by forming a protective oxide layer on the surface. 6. Electro-polishing: Electro-polishing is an electrochemical process that removes a thin layer of material from the surface of the steel. This treatment can improve the surface finish, remove micro-roughness, and enhance the corrosion resistance of the steel. These are just a few examples of the various surface treatments that can be applied to special steel. The choice of treatment depends on the specific requirements of the application and the desired properties of the steel.
- Q: How is free-cutting steel used in the production of precision components?
- Free-cutting steel is used in the production of precision components because it has enhanced machinability properties. Its composition includes elements like sulfur, lead, or bismuth, which act as lubricants during machining operations. This allows for improved cutting efficiency, reduced tool wear, and increased productivity in manufacturing processes involving precision components.
- Q: What is the significance of alloying elements in special steel?
- Alloying elements in special steel play a crucial role in enhancing its properties and performance. These elements, such as chromium, nickel, manganese, and molybdenum, are added to improve characteristics like strength, hardness, corrosion resistance, and heat resistance. The combination and proportion of alloying elements determine the specific properties of the steel, making it suitable for various applications, such as manufacturing aircraft parts, automotive components, or tools. Overall, alloying elements greatly contribute to the versatility and functionality of special steel.
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Gr40 Ribbed High Quality Steel Rebar
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 170 m.t.
- Supply Capability:
- 500000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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