Wide flat bar for construction made in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 10000 m.t.
- Supply Capability:
- 10000 m.t./month
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OKorder Financial Service
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Product Description:
OKorder is offering Wide flat bar for construction made in China at great prices with worldwide shipping. Our supplier is a world-class manufacturer of steel, with our products utilized the world over. OKorder annually supplies products to European, North American and Asian markets. We provide quotations within 24 hours of receiving an inquiry and guarantee competitive prices.
Product Applications:
Wide flat bar for construction made in China are ideal for structural applications and are widely used in the construction of buildings and bridges, and the manufacturing, petrochemical, and transportation industries.
Product Advantages:
OKorder's Wide flat bar for construction made in China are durable, strong, and resist corrosion.
Main Product Features:
· Premium quality
· Prompt delivery & seaworthy packing (30 days after receiving deposit)
· Corrosion resistance
· Can be recycled and reused
· Mill test certification
· Professional Service
· Competitive pricing
Product Specifications:
Specifications of Bearing Steel Round Bar
Grade | AISI 52100, ASTM E52100, DIN 1.3505,JIS SUJ2, GCr15 |
Dimensions | Diameter: 30-60mm Length: 2000-13000mm or as required |
Shape | Round Bar |
Type | Alloy Steel Bar |
Delivery Condition | Black Surface |
Material | Bearing Steel |
Technique | Hot Rolled |
Usage and Applications of Bearing Steel Round Bar
Bearing steels are used for ball and roller bearing applications and are comprised of low carbon steels and high carbon through harden able steel.
First the famous 1C-1.5Cr steel from which the majority of bearings are made. Its structure is apparently well-understood and the focus is on purity in order to avoid inclusions which initiate fatigue during rolling contact. Then there is the M50 steel and its variants, from which bearings which serve at slightly higher temperatures in aeroengines are manufactured, based on secondary-hardened martensite.
Tapered roller bearing are generally used to support combined load mainly consisting of radial load. Their cups are separable for easy assembling ,During mounting and using, radial clearance and axial clearance can be adjusted and preloaded mounting can be made.
Packaging & Delivery of Bearing Steel Round Bar
Packaging Detail: ASTM 52100 Steel in seaworthy packing or on customer request; Packed in bundles with standard export sea-worthy package or as customer require
Delivery Detail: 45 days after confirmed
Trade terms: FOB, CFR, CIF ou as customer's required
MOQ: 25 tons or at customer's demands. If the quantity is good, the price will be better.
Processing of Bearing Steel Round Bar
The processing of Bearing Steel Round Bar is hot rolled (strictly control sulphur, phosphorus and non-metallic inclusions content and distribution)
Chemical Composition of Bearing Steel Round Bar
C | Si | Mn | Cr | Ni | Cu |
Equal or less than | |||||
0.95-1.05 | 0.15-0.35 | 0.25-0.45 | Cr:1.40-1.65 | 0.30 | 0.25 |
All products' chemical composition and specification can be design according to customers' requirement.
Note of Bearing Steel Round Bar
1. According to national standard (GB) for our products, if not, supply according to national standards (GB) or agreement.
2. We can not only provide electric furnace +LF+VD and electros lag re-melting (ESR) steel forging materials, but also forging products of piece, bar, etc.
3. Our company is equipped with roll equipment and can provide our customers with roll billets or finished.
4. Please send us your detailed specifications when inquire. We will reply to you ASAP.
5. Certificate of quality is issued in English, in addition the normal terms, production process, the mechanical property (yield strength, tensile strength, elongation and hardness. forged ratio, UT test result, Grain size, heat treatment methods and the sample of is shown on the certificate
FAQ：
Q1: How soon can we receive the product after purchase?
A1: Within three days of placing an order, we will begin production. The specific shipping date is dependent upon international and government factors, but is typically 7 to 10 workdays.
Q2: Can stainless steel rust?
A2: Stainless does not "rust" as you think of regular steel rusting with a red oxide on the surface that flakes off. If you see red rust it is probably due to some iron particles that have contaminated the surface of the stainless steel and it is these iron particles that are rusting. Look at the source of the rusting and see if you can remove it from the surface.
- Q: What are the different low-temperature grades of special steel?
- Special steel includes several low-temperature grades designed to withstand extreme cold conditions. Among the commonly used grades are the following: 1. Austenitic Stainless Steel: This grade, such as 304 and 316, is renowned for its excellent corrosion resistance and high strength in low temperatures. It finds frequent use in cryogenic applications like LNG storage tanks and cryogenic piping. 2. Ferritic Stainless Steel: Ferritic stainless steel grades, including 410 and 430, possess good ductility and resistance to stress corrosion cracking, making them suitable for low-temperature applications. They are often utilized in cryogenic environments that require both high strength and resistance to embrittlement. 3. Martensitic Stainless Steel: Martensitic stainless steel, such as 410 and 420, delivers high strength and good toughness even in low temperatures. It is commonly employed in applications demanding exceptional wear resistance and strength, such as valves and turbine blades in cryogenic systems. 4. Duplex Stainless Steel: Duplex stainless steel grades like 2205 and 2507 combine high strength, excellent corrosion resistance, and good toughness in low temperatures. They are extensively employed in offshore and subsea applications where low-temperature performance and resistance to pitting and crevice corrosion are crucial. 5. Nickel-Based Alloys: Nickel-based alloys, such as Inconel and Hastelloy, are renowned for their exceptional corrosion resistance and high strength in both low and high temperatures. They are widely used in cryogenic applications, including liquefied natural gas (LNG) processing plants, as well as the aerospace and chemical processing industries. Each of these low-temperature grades of special steel offers distinct properties and advantages, making them suitable for various applications in extreme cold conditions. The appropriate grade selection depends on factors such as the specific temperature range, required corrosion resistance, strength requirements, and environmental conditions.
- Q: What are the different methods for improving the fatigue strength of special steel?
- There are various ways to enhance the fatigue strength of special steel: 1. Heat treatment is a commonly used approach, involving processes like annealing, quenching, and tempering. These treatments refine the steel's microstructure, reduce impurities, and boost fatigue resistance. 2. Surface treatments, such as shot peening and nitriding, can also enhance fatigue strength. Shot peening bombards the steel surface with small metal particles, inducing compression stress that prevents crack formation and propagation. Nitriding diffuses nitrogen into the surface layer, creating a hard and wear-resistant nitride layer that improves fatigue resistance. 3. Alloying special steel with specific elements, like chromium, molybdenum, or vanadium, can significantly improve fatigue strength. These elements form carbides or nitrides, acting as barriers against crack propagation. 4. Applying protective surface coatings, like electroplating, hot-dip galvanizing, or physical vapor deposition (PVD), can enhance fatigue strength. These coatings act as barriers against environmental factors that may cause corrosion or surface damage, ultimately extending the steel's fatigue life. 5. Grain refinement can be achieved through processes like severe plastic deformation or equal channel angular pressing (ECAP). By refining the grain size, the steel's fatigue strength can be improved, as fine-grained steels have higher resistance to crack initiation and propagation. 6. Residual stress management plays a crucial role in enhancing fatigue strength. Techniques like stress relieving or shot peening can reduce tensile residual stresses, which are detrimental to fatigue resistance. It's important to consider specific requirements, the type of special steel, and the intended application when selecting the most suitable method for improving fatigue strength.
- Q: How does special steel contribute to improving product lifespan?
- Special steel contributes to improving product lifespan by offering enhanced strength, durability, and resistance to corrosion. Its unique composition and manufacturing processes result in a material that can withstand harsh conditions, heavy loads, and wear and tear over an extended period. This increased longevity and reliability of products made with special steel ultimately leads to reduced maintenance costs, less frequent replacements, and improved customer satisfaction.
- Q: How does special steel contribute to sustainable development?
- Special steel contributes to sustainable development in several ways. Firstly, it is highly durable and long-lasting, reducing the need for frequent replacements and the associated resource consumption and waste generation. Additionally, special steel is often used in energy-efficient applications, such as in the construction of wind turbines or energy-efficient vehicles, helping to reduce carbon emissions and combat climate change. Furthermore, special steel can be recycled and reused, minimizing the demand for virgin materials and reducing the environmental impact of the steel industry. Overall, the use of special steel promotes sustainable practices by extending product lifecycles, reducing energy consumption, and supporting a circular economy.
- Q: How does special steel perform in cryogenic applications?
- Special steel is renowned for its exceptional performance in cryogenic applications, characterized by extremely low temperatures that fall below -150 degrees Celsius (-238 degrees Fahrenheit). Unlike regular steel, which tends to become brittle and weaker in such conditions, special steel, also referred to as cryogenic steel or low-temperature steel, is specifically engineered to withstand these extreme cold temperatures. One of the key advantages of special steel lies in its ability to maintain its mechanical properties even at cryogenic temperatures. It retains its strength, toughness, and ductility, enabling it to endure the stresses and strains imposed on it in cryogenic environments. As a result, special steel finds application in various fields, including aerospace, energy, and healthcare, where it is used in cryogenic storage tanks, pipelines, and equipment. Another significant feature of special steel is its excellent resistance to brittle fracture at low temperatures. This is of utmost importance since brittle fractures occur when materials become excessively brittle and fail under stress. The distinct composition and processing methods employed in special steel help prevent such fractures, ensuring the integrity and safety of components within cryogenic systems. Furthermore, special steel possesses a low coefficient of thermal expansion, meaning it undergoes minimal dimensional changes when exposed to temperature fluctuations. This characteristic proves highly advantageous in cryogenic applications as it preserves the stability and reliability of equipment and structures. Additionally, special steel exhibits commendable corrosion resistance, which is vital in cryogenic environments where the presence of moisture and certain chemicals can accelerate corrosion processes. By resisting corrosion, special steel enhances the longevity and durability of components, thereby reducing maintenance and replacement costs. In conclusion, special steel is the preferred choice for cryogenic applications due to its ability to maintain mechanical properties, resist brittle fracture, display low thermal expansion, and exhibit corrosion resistance. These properties render it a dependable and efficient material for use in cryogenic systems, providing the necessary strength and durability even under extremely low-temperature conditions.
- Q: What are the different methods of preventing hydrogen-induced cracking in special steel?
- There are several methods to prevent hydrogen-induced cracking in special steel. One common approach is to use preheating techniques, which involve heating the steel before welding to reduce hydrogen levels and minimize the risk of cracking. Another method is to employ low-hydrogen welding consumables, such as low-hydrogen electrodes or filler wires, which have reduced hydrogen content and can help prevent cracking. Additionally, post-weld heat treatments, such as stress relieving or tempering, can be implemented to remove residual hydrogen and relieve stress in the steel, reducing the chances of cracking. Proper cleaning and preparation of the steel surface, as well as controlling the welding parameters, are also crucial in preventing hydrogen-induced cracking.
- Q: What are the specific requirements for special steel used in the chemical industry?
- The specific requirements for special steel used in the chemical industry include corrosion resistance, high strength, and the ability to withstand extreme temperatures and pressures. Additionally, it should have excellent weldability and formability, as well as resistance to various chemicals and acids commonly found in chemical processes.
- Q: How is the toughness of special steel measured?
- The toughness of special steel is typically measured using specific tests and methodologies that evaluate its ability to absorb energy and resist fracture. One common method is the Charpy V-Notch (CVN) test, which involves striking a notched specimen with a pendulum hammer and measuring the energy absorbed during fracture. The results are expressed as the amount of energy absorbed per unit area, usually in joules per square centimeter (J/cm²) or foot-pounds per square inch (ft-lb/in²). Another test commonly used is the Izod test, which is similar to the CVN test but uses a different specimen geometry. Additionally, other mechanical tests like tensile strength, impact strength, and fracture toughness measurements can also be used to assess the toughness of special steel. These tests help engineers and manufacturers determine the suitability of special steel for various applications, especially those that require high resistance to impact or sudden loading.
- Q: How does special steel contribute to the chemical resistance of products?
- Special steel contributes to the chemical resistance of products by offering enhanced corrosion resistance properties due to its unique composition and manufacturing process. It contains alloying elements such as chromium and nickel, which form a protective oxide layer on the surface that prevents the steel from reacting with corrosive substances. This makes special steel highly resistant to acids, alkalis, and other chemicals, ensuring the longevity and reliability of products in various industries.
- Q: How does special steel perform in high-temperature oxidation with sulfur-containing atmospheres?
- Special steel performs well in high-temperature oxidation with sulfur-containing atmospheres due to its enhanced resistance to sulfur-induced corrosion. The alloy composition and surface treatment of special steel enable it to form a protective oxide layer that prevents sulfur from penetrating the material, thereby reducing the risk of oxidation and corrosion.
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Wide flat bar for construction made in China
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT or LC
- Min Order Qty:
- 10000 m.t.
- Supply Capability:
- 10000 m.t./month
OKorder Service Pledge
OKorder Financial Service
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