Special Steel Reinforcing Steel Bars HRB400 Rebars

Special Steel Reinforcing Steel Bars HRB400 Rebars System 1

Special Steel Reinforcing Steel Bars HRB400 Rebars

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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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Product Information

1.Specification

Diameter(mm)	Φ6 ,Φ8,Φ10,Φ12,Φ13,Φ14,Φ16,Φ18,Φ20,Φ22,Φ25,Φ28,Φ32,Φ36,Φ40,Φ50
Length(m)	Unfolded / Straight Bundles weighing upto 2 Metric Tons and lengths is 6 Meters up to 15 Meters or according customers require
	U Shaped folded Bundles weighing up to 2 Metric Tons and lengths is 12 Meters
	Rounded Coils ~ up to 2 Metric Ton Coils for Bending / Cutting Machine use.
Standard	GB(HRB335/HRB400/HRB500);
	BS4449 -1997 GRADE 250B, 460B; BS4449-2005 GRADE 500B;
	ASTM A615 GRADE 40,GRADE60,GRADE75; ASTM A706;
	DIN488-1 420S/500S, BST500S
	JIS G3112 SD35, SD40, SD50,SD390
	NFA 35016 FE E 400, FE E 500
	CA 50/60
	GOST A3 R A500C
Surface finished	Screw-thread
	Epoxy coating
	Galvanized coating
Production facility	Imports of production equipment from Italy
Production capacity	50,000 MT/month
Payment term	T/T or 100% L/C at sight
Package	In bundles. One bundles about 2-3tons

2.Chemical composition

Grade	Technical data of the original chemical composition (%)
	C	Mn	Si	S	P	V
HRB400	≤0.25	≤1.60	≤0.80	≤0.045	≤0.045	0.04-0.12
	Physics capability
	Yield Strength (N/cm2)		Tensile Strength (N/cm2)		Elongation (%)
	≥400		≥570		≥14

3.Theorectical weight

Diameter (MM)	Cross Sectional Area (MM2)	Theorectical Weight (KG/M)	Weight of 12M Bar (KG)	A Ton Contains 12M Bars (PCS)
6	28.27	0.222	2.664	375.38
8	50.27	0.395	4.74	210.97
10	78.54	0.617	7.404	135.06
12	113.1	0.888	10.656	93.84
14	153.9	1.21	14.52	68.87
16	201.1	1.58	18.96	52.74
18	254.5	2	24	41.67
20	314.2	2.47	29.64	33.74
22	380.1	2.98	35.76	27.96
25	490.9	3.85	46.2	21.65
28	615.8	4.83	57.96	17.25
32	804.2	6.31	75.72	13.21
36	1018	7.99	98.88	10.43
40	1257	9.87	118.44	8.44

Product Show

Special Steel Reinforcing Steel Bars HRB400 Rebars

Workshop Show

Special Steel Reinforcing Steel Bars HRB400 Rebars

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Why choose us?

(1) The leading exporter in China special steel industry.

(2) Large stocks for various sizes, fast delivery date.

(3) Good business relationship with China famous factories.

(4) More than 7 years steel exporting experience.

(5) Good after-sales service guarantee.

Q:Can special steel be used in construction?: Yes, special steel can be used in construction. Special steel, also known as alloy steel, offers superior strength, durability, and resistance to corrosion and wear compared to regular steel. It is commonly used in the construction of high-rise buildings, bridges, and other structures that require exceptional strength and longevity. Additionally, special steel can be customized to meet specific project requirements, making it a versatile choice for construction applications.

Q:What are the different surface treatment methods for special steel?: Some of the different surface treatment methods for special steel include heat treatment, coating or plating, polishing, shot blasting, and passivation. Heat treatment involves subjecting the steel to specific temperatures and cooling processes to alter its properties. Coating or plating involves applying a layer of another material, such as zinc or chrome, to protect the steel from corrosion. Polishing is done to create a smooth and glossy surface finish. Shot blasting is a process that involves using abrasive materials to remove impurities and create a textured surface. Passivation is a chemical treatment used to remove iron contaminants and improve corrosion resistance. These methods can be utilized individually or in combination to enhance the surface characteristics of special steel.

Q:What are the different applications of tool special steel?: Tool special steel is a versatile material with unique properties that finds applications in various industries. Some of the diverse uses of this steel include: 1. Cutting Tools: In the manufacturing of drills, saw blades, milling cutters, and lathe tools, tool special steel is widely employed. Its exceptional hardness, wear resistance, and toughness ensure long tool life and superior cutting performance. 2. Dies and Molds: Tool special steel is extensively used in the production of dies and molds for metalworking and plastic injection molding processes. It is suitable for these demanding applications due to its ability to withstand high temperatures, resist wear and deformation, and maintain dimensional stability. 3. Automotive Industry: Tool special steel is employed in the automotive industry for various components such as crankshafts, gears, camshafts, and engine valves. Its outstanding strength, fatigue resistance, and heat resistance qualities contribute to the overall durability and performance of automotive parts. 4. Aerospace Industry: The aerospace industry utilizes tool special steel for applications such as turbine blades, aircraft engine components, landing gears, and structural parts. Its high strength, corrosion resistance, and ability to withstand extreme temperatures and pressure make it an ideal choice for these critical applications. 5. Construction and Mining: In the construction and mining sectors, tool special steel is used for equipment like excavator buckets, rock drills, bulldozer blades, and drilling bits. Its remarkable hardness, toughness, and resistance to abrasion enable these tools to withstand the harsh conditions encountered in these industries. 6. Tooling Industry: In the tooling industry, tool special steel is extensively employed in the manufacture of various types of tools and equipment. Hand tools, power tools, and precision instruments all benefit from the exceptional strength, hardness, and resistance to wear and deformation of tool special steel. 7. Medical Industry: In the medical field, tool special steel is utilized for the production of surgical instruments, orthopedic implants, and dental tools. Its biocompatibility, corrosion resistance, and ability to be sterilized make it suitable for these critical applications. These examples highlight the numerous applications of tool special steel. Its unique properties make it a valuable material in various industries where durability, strength, and precision are essential requirements.

Q:How does molybdenum improve the performance of special steel?: Molybdenum plays a crucial role in enhancing the performance of special steel due to its unique properties and characteristics. First and foremost, molybdenum significantly improves the strength and toughness of steel, making it more durable and resistant to deformation. This is achieved by forming a solid solution with iron, which results in a fine-grained microstructure and reduces the formation of brittle phases in the steel. Moreover, molybdenum increases the hardenability of steel, allowing it to be heat-treated to obtain desired mechanical properties. This is particularly important in the production of special steel, where high strength, wear resistance, and thermal stability are often required. By enabling effective heat treatment, molybdenum ensures that the steel can be processed to meet specific performance requirements, such as hardness, toughness, and dimensional stability. Additionally, molybdenum enhances the corrosion resistance of special steel, making it suitable for various challenging environments. It forms a protective oxide layer on the surface of the steel, which acts as a barrier against corrosive substances like acids, alkalis, and salts. This resistance to corrosion is crucial in applications where the steel is exposed to harsh conditions, such as marine environments, chemical processing plants, and oil and gas industries. Furthermore, molybdenum improves the high-temperature strength and creep resistance of special steel. It enables the steel to maintain its mechanical properties even at elevated temperatures, making it suitable for applications where the steel is subject to prolonged exposure to heat or mechanical stress. In summary, molybdenum plays a vital role in enhancing the performance of special steel by improving its strength, toughness, hardenability, corrosion resistance, and high-temperature properties. These attributes make molybdenum an essential alloying element in the production of special steel for various industries, including automotive, aerospace, energy, and tool manufacturing.

Q:What are the different surface coatings applied to special steel?: Some of the different surface coatings applied to special steel include galvanization, powder coating, electroplating, and thermal spray coatings. These coatings serve various purposes such as corrosion resistance, improved aesthetics, increased durability, and enhanced electrical conductivity.

Q:What are the different tool steel alloys?: Tool steel, a type of steel containing carbon and alloy, is specifically designed for producing tools, dies, and cutting applications. There are various tool steel alloys available, each possessing unique properties and characteristics. 1. Carbon Tool Steels: These steels have a higher carbon content, typically ranging from 0.60% to 1.00%. They provide excellent hardness, wear resistance, and toughness, rendering them suitable for cutting and forming tools. 2. High-Speed Tool Steels: These steels are engineered to endure high temperatures while maintaining their hardness and strength at elevated speeds. They usually contain alloying elements like tungsten, molybdenum, and vanadium. 3. Shock-Resistant Tool Steels: These steels are specially formulated to withstand high impact or shock loads without fracturing. They offer exceptional toughness and are frequently utilized for chisels, hammers, and other tools subjected to intense impact forces. 4. Hot-Work Tool Steels: These steels are designed to retain their hardness and strength at high temperatures, making them ideal for applications involving hot forming or forging processes. They exhibit outstanding thermal conductivity and wear resistance. 5. Cold-Work Tool Steels: These steels are specifically designed for applications involving cutting, shearing, and forming at room temperature or lower. They possess high hardness, wear resistance, and toughness, enabling them to withstand the stresses associated with cold-working operations. 6. Mold Steels: Mold steels are primarily used in the production of molds for plastic injection molding, die casting, and extrusion processes. They offer good machinability, high wear resistance, and excellent dimensional stability. 7. Stainless Tool Steels: Stainless tool steels combine the corrosion resistance of stainless steel with the hardness and toughness of tool steel. They are commonly used in applications where both wear resistance and corrosion resistance are required. These examples represent just a fraction of the tool steel alloys available in the market. Each alloy possesses distinct properties and applications, enabling manufacturers to select the most suitable tool steel for their specific requirements.

Q:Classification of special steel products: Carbon steel, also called carbon steel, is an iron carbon alloy with a carbon content of less than 2% wc. Carbon steel, in addition to carbon, usually contains a small amount of silicon, manganese, sulfur and phosphorus.Carbon steels can be divided into three categories: carbon structural steel, carbon tool steel and free cutting structural steel by use. Carbon structural steel can be divided into two kinds of structural steel and machine building steel.

Q:How does special steel perform in construction applications?: With its exceptional properties and performance characteristics, special steel, also known as alloy steel, plays a vital role in construction applications. Its enhanced strength, durability, and resistance to environmental factors make it highly suitable for demanding projects. A major advantage of special steel in construction is its high strength-to-weight ratio. This means it can handle heavy loads and pressures while remaining relatively lightweight, allowing for more efficient and cost-effective designs. Additionally, special steel has excellent fracture toughness, ensuring that structures built with this material can withstand significant impacts and vibrations without failure. Another significant benefit is its exceptional corrosion resistance. Construction projects often face exposure to harsh weather conditions, chemicals, and moisture, which can cause rusting and deterioration of traditional steel. However, special steel contains elements like chromium, nickel, and molybdenum, which provide excellent resistance to corrosion and oxidation, ensuring the longevity and durability of structures. Furthermore, special steel offers excellent weldability, enabling the efficient and secure joining of various components during construction. This allows for the fabrication of complex structures while maintaining their integrity and strength. In addition to its mechanical properties, special steel can provide additional benefits in construction applications. For instance, certain types of special steel possess excellent fire resistance, making them ideal for constructing fire-resistant structures or components. Additionally, some types of special steel offer enhanced electrical conductivity, making them suitable for applications that require efficient transmission of electricity. Overall, special steel's superior strength, durability, corrosion resistance, weldability, and additional properties make it an excellent choice for a wide range of construction applications. Whether it's high-rise buildings, bridges, infrastructure, offshore structures, or industrial facilities, special steel ensures the construction of safe, reliable, and long-lasting structures in challenging environments.

Q:What are the challenges in welding special steel alloys?: Welding special steel alloys presents various obstacles due to their distinct properties and composition. Key challenges encountered when welding special steel alloys include the following: 1. Elevated melting point: Special steel alloys typically possess higher melting points compared to regular steel, necessitating increased heat input during the welding process. This can create difficulties in achieving proper fusion and may require specialized welding equipment and techniques. 2. Disparity in thermal expansion: Special steel alloys may exhibit different coefficients of thermal expansion in comparison to the base metal or other materials being joined. This can result in the development of stress and distortion during welding, impacting the structural integrity of the welded joints. 3. Heat sensitivity: Certain special steel alloys are more susceptible to heat-affected zone (HAZ) cracking and other forms of weld defects. The heightened heat input during welding can induce the formation of brittle phases or precipitates, leading to reduced mechanical properties and potential weld failures. 4. Metallurgical alterations: Welding special steel alloys can bring about significant metallurgical changes in the base metal and the heat-affected zone. These changes encompass the formation of new microstructures, variations in hardness, and modifications in chemical composition. Such alterations can affect the overall performance and properties of the welded joints. 5. Pre-weld and post-weld treatments: Specific pre-weld and post-weld treatments are often required for special steel alloys to minimize the risk of weld defects and optimize the properties of the welded joints. These treatments may encompass preheating, post-weld heat treatment, or the utilization of specialized filler metals to ensure adequate weld integrity. 6. Limited consumable availability: Special steel alloys may have a limited selection of suitable consumables, such as filler metals and shielding gases, which are vital for achieving high-quality welds. The absence of appropriate consumables can make it challenging to find compatible materials that offer sufficient strength and corrosion resistance in the welded joints. To overcome these challenges effectively, it is essential to possess a comprehensive understanding of the specific properties and requirements of the special steel alloy being welded. The utilization of proper welding techniques, including heat control, filler material selection, and post-weld treatments, is crucial to ensure welds of superior quality with optimal mechanical properties and structural integrity. Moreover, collaborating with material suppliers, welding experts, and adhering to industry standards and guidelines can facilitate the effective resolution of challenges associated with welding special steel alloys.

Q:What are the different surface finishing techniques for special steel?: Some of the different surface finishing techniques for special steel include electroplating, powder coating, passivation, etching, and polishing.

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