Grade AISI309_309S Stainless Steel Round Bar Large Quantity in Stock

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Grade AISI309_309S Stainless Steel Round Bar Large Quantity in Stock

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 m.t.

Supply Capability:: 10000 m.t./month

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Grade AISI 309_309S Stainless Steel Round Bar in stock

Descriptio of Grade AISI 309_309S Steel Round Bar in Stock

(stainless steel round bar, angle bar , flat bar , channel bar , hexagon bar , square bar .)

1.grade:201,202,301,302,303,304,304L,308,309,310,310S,316,316L,321,410,420,430,etc.

2.diameter:3mm-400mm.

3.surface:bright , black , pickeled & bright .

4.length: no more than 6 m .

5.packing: according to international standards of export .

6.trade terms: FOBshanghai , CIF+import port .

7.payment terms: L/C at sight , 30% T/T in advance + copy of B/L .

8.delivery time: within 8 to 12 days since the receipt of payment .

9. MOQ is 1 ton .

Description of Grade AISI309_309S Steel Round Bar in Stock

Standard	AISI , JIS , ER , GB , ASTM , etc.
Grade	201,201,301,302,303,304,304l,308,309,310,310S,316,316L,321,410,420,etc.
Application	widely used in the areas as ss fasteners , chains , kitchen and sanitary wares , furniture handles , handrails , electroplating and electrolyzing pendants , foods, electron , petroleum , construction and decoration , etc. with a high strength after cold-drawn , anti-stress corrosion , good surface .
Chemcial composition	according to international standards of ASTM , AISI , JIS , ER , GB ,etc.

Company Information of Grade AISI309_309S Steel Round Bar in Stock

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Grade AISI309_309S Stainless Steel Round Bar Large Quantity in Stock

Packaging & Delivery of Grade AISI309_309S Steel Round Bar in Stock

Packaging Detail	Sea worthy packing /as per customer's packing instruction
Delivery Detail	15 ~ 40 days after receiving the deposit

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Grade AISI309_309S Stainless Steel Round Bar Large Quantity in Stock

FAQ:

Are you a trading company or manufacturer?	Manufacturer
What’s the MOQ?	3 metric ton
What’s your delivery time?	15-35 days after downpayment received
Do you Accept OEM service?	Yes
what’s your delivery terms?	FOB/CFR/CIF
What's the Payment Terms?	30% as deposit,70% before shipment by T/T
	Western Union acceptable for small amount.
	L/C acceptable for large amount.
	Scrow ,Paybal,Alipay are also ok
Why choose us?	Chose happens because of quality, then price, We can give you both. Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.
What's your available port of Shipment?	Main Port, China
What’s your featured services?	Our service formula: good quality+ good price+ good service=customer's trust
Where are your Market?	Covering more than 160 countries in the world

Q: What are the main applications of special steel in the energy storage industry?: Special steel is extensively used in the energy storage industry for various applications. It is primarily employed in the manufacturing of storage tanks and containers, ensuring the safe storage and transport of energy sources such as liquefied natural gas (LNG) or compressed hydrogen. Special steel is also utilized in the construction of battery casings and components, providing durability and protection for energy storage systems. Additionally, special steel is crucial in the fabrication of critical infrastructure, such as pipelines and transmission towers, which play a vital role in the efficient distribution of energy. Overall, special steel serves as a fundamental material in the energy storage industry, enabling the reliable and secure storage, transportation, and utilization of various energy sources.

Q: What are the most common alloys used in special steel?: The most common alloys used in special steel are stainless steel, high-speed steel, tool steel, and carbon steel.

Q: What are the main characteristics of spring steel?: Spring steel is a type of high-carbon steel known for its exceptional elasticity and resilience. Its main characteristics include high tensile strength, excellent fatigue resistance, and the ability to withstand repeated bending or twisting without permanent deformation. Spring steel also exhibits good corrosion resistance, making it suitable for various applications where durability and flexibility are required, such as springs, clips, and automotive components.

Q: How does special steel contribute to the aerospace material recyclability?: Special steel contributes to aerospace material recyclability in several ways. First, special steel is known for its high strength-to-weight ratio, making it a preferred choice for critical components in aircraft. This means that when these components reach the end of their service life, they can be recycled and repurposed without compromising the safety and structural integrity of the aircraft. Additionally, special steel is highly durable and resistant to corrosion, making it suitable for long-term use in harsh aerospace environments. This durability ensures that the steel can be recycled multiple times without significant degradation in its mechanical properties, further enhancing the recyclability of aerospace materials. Moreover, the metallurgical properties of special steel allow for efficient recycling processes. Steel is a highly recyclable material, and special steel alloys can be easily separated from other materials during the recycling process. This ease of separation and the high value of steel in the recycling market make special steel an economically viable choice for aerospace manufacturers and recyclers. In summary, special steel's strength, durability, corrosion resistance, and ease of recycling make it a valuable contributor to the recyclability of aerospace materials. By using special steel in aircraft components, the aerospace industry can enhance sustainability efforts and reduce the environmental impact of its operations.

Q: What are the challenges in heat treatment of special steel alloys?: The heat treatment of special steel alloys poses several challenges due to their unique composition and properties. One of the main challenges is achieving the desired microstructure and mechanical properties while maintaining dimensional stability. Special steel alloys often have complex alloying elements and require specific heat treatment processes to achieve the desired properties. Another challenge is controlling the heating and cooling rates during the heat treatment process. Special steel alloys are often sensitive to rapid or uneven heating and cooling, which can result in distortion, cracking, or the formation of undesirable phases. Therefore, precise control of the heating and cooling rates is crucial to avoid these issues and ensure uniformity in the final product. Furthermore, the presence of alloying elements in special steel alloys can lead to increased hardenability, making it challenging to achieve the desired hardness throughout the entire component. Special attention needs to be given to the selection of appropriate heat treatment parameters, such as temperatures, soaking times, and quenching media, to achieve the desired hardness and avoid excessive hardness gradients. Additionally, special steel alloys are often prone to oxidation and decarburization during heat treatment due to their high alloy content and exposure to elevated temperatures. These reactions can lead to surface defects and a decrease in the carbon content, affecting the final properties of the alloy. Therefore, protective atmospheres or heat treatment environments must be carefully controlled to prevent such issues. Moreover, the size and geometry of components made from special steel alloys can pose challenges during heat treatment. Large or complex-shaped components require careful consideration of the heating and cooling methods to ensure uniformity of the microstructure and properties throughout the entire component. This may involve the use of specialized furnaces, fixtures, or heat treatment cycles to overcome these challenges. In conclusion, the challenges in heat treatment of special steel alloys include achieving the desired microstructure and mechanical properties, controlling heating and cooling rates, managing hardenability, preventing oxidation and decarburization, and addressing the size and geometry of components. Overcoming these challenges requires a deep understanding of the alloy's composition, properties, and the application of appropriate heat treatment techniques.

Q: What are the common challenges in welding special steel?: When welding special steel, there are several challenges that differ from welding regular carbon steel. Some common challenges in welding special steel include the following: 1. High carbon content: Special steels often have a high carbon content, which can increase hardness and brittleness. Achieving a proper weld without cracks or defects can be more difficult. 2. High alloy content: Special steels often contain various alloying elements like chromium, nickel, or molybdenum, which can affect weldability. These elements can introduce complexities, such as increased susceptibility to heat-affected zone (HAZ) cracking or the formation of brittle phases. 3. Heat sensitivity: Special steels are often more sensitive to heat during welding. Excessive heat can cause grain growth, reduced mechanical properties, or distortion of the welded structure. Therefore, careful control of heat input and preheating techniques may be necessary. 4. Pre-weld and post-weld treatments: Specific pre-weld and post-weld treatments may be required for special steels to ensure proper weld quality and performance. These treatments can include preheating, stress relieving, or post-weld heat treatment. Failure to follow these procedures can result in residual stresses or reduced mechanical properties. 5. Joint design and fit-up: The design and fit-up of the weld joint can also present challenges. Special steels may require specific joint configurations, such as a double-V or double-U groove, to ensure adequate penetration and fusion. Additionally, tight tolerances may be necessary to maintain desired mechanical properties. 6. Welding process selection: The choice of welding process can greatly impact the success of welding special steel. TIG or laser welding may be more suitable for high-alloy steels, while MIG or submerged arc welding may be better for specific applications. Selecting the appropriate welding process is crucial for achieving a sound weld with desired properties. To overcome these challenges, it is essential to thoroughly understand the specific type of special steel being welded and follow proper welding procedures and techniques. This may involve conducting pre-weld qualification tests, using suitable welding consumables, and ensuring proper heat control throughout the welding process. Additionally, working with experienced welders and seeking guidance from experts in special steel welding can effectively overcome these challenges.

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: What are the main characteristics of heat-resistant steel?: Heat-resistant steel, known as high-temperature steel as well, is an alloy with specific properties that enable it to endure extreme temperatures without sacrificing its mechanical strength and integrity. The primary features of heat-resistant steel are as follows: 1. Thermal fatigue resistance: Heat-resistant steel is designed to endure cyclic heating and cooling without developing cracks or fractures. This characteristic allows it to maintain its structural integrity, even in environments with rapid temperature fluctuations. 2. Exceptional creep resistance: Creep refers to the gradual deformation that occurs in a material when exposed to high temperatures over an extended period. Heat-resistant steel exhibits exceptional resistance to creep, ensuring that it retains its shape and strength even under prolonged heat exposure. 3. Preservation of mechanical properties at elevated temperatures: Unlike regular steel, which experiences a significant reduction in strength and hardness at high temperatures, heat-resistant steel retains its mechanical properties even under extreme conditions. This property makes it suitable for applications in industries such as aerospace, power generation, and oil and gas. 4. Resistance to oxidation and corrosion: Heat-resistant steel possesses a high resistance to oxidation and corrosion at elevated temperatures. It forms a protective oxide layer on its surface, preventing the underlying material from being attacked by oxygen or other corrosive elements. This property enhances the longevity and reliability of components made from heat-resistant steel. 5. Excellent thermal conductivity: Heat-resistant steel exhibits outstanding thermal conductivity, allowing it to efficiently transfer heat away from its surface. This feature proves particularly beneficial in applications where heat dissipation is crucial, such as in heat exchangers and furnace components. 6. Minimal thermal expansion: Heat-resistant steel has a relatively low coefficient of thermal expansion, meaning it expands and contracts minimally when subjected to temperature changes. This characteristic ensures dimensional stability and reduces the risk of warping or distortion under thermal stress. In summary, the main characteristics of heat-resistant steel make it an ideal material for applications that involve exposure to high temperatures, such as furnace components, exhaust systems, gas turbines, and heat exchangers. Its ability to endure extreme heat while maintaining its structural integrity and mechanical properties make it a critical material in industries where temperature resistance is of utmost importance.

Q: What are the different methods of improving the impact toughness of special steel?: There are multiple ways to increase the impact toughness of special steel. Here are a few commonly utilized techniques: 1. Heat Treatment: Heat treatment is a highly effective method that involves subjecting the steel to specific heating and cooling processes. For example, quenching and tempering can significantly enhance the impact toughness of steel. Quenching rapidly cools the heated steel in a liquid medium like oil or water, while tempering involves reheating the quenched steel to a specific temperature and then slowly cooling it. This process refines the steel's microstructure, making it more resistant to fractures and improving its impact toughness. 2. Alloying: Another method is alloying, which entails adding specific elements to the steel composition. Elements like nickel, chromium, and molybdenum can enhance the toughness of steel by modifying its microstructure and improving its resistance to impact. These alloying elements reduce the formation of brittle phases and enhance the steel's ductility. 3. Grain Refinement: The grain size of steel is crucial in determining its impact toughness. By refining the grain size, the steel can exhibit improved toughness. This can be achieved through techniques like controlled rolling or severe plastic deformation. These methods break down large grains and promote the formation of smaller, more uniform grains, resulting in enhanced toughness. 4. Shot Peening: Shot peening is a surface treatment technique that involves bombarding the steel surface with small metallic or ceramic shots. This process induces compressive stress on the surface, reducing the likelihood of crack propagation and improving impact toughness. 5. Welding Techniques: When welding special steel, specific techniques can be employed to enhance its impact toughness. Preheating the steel before welding and controlling welding parameters like heat input and cooling rate help reduce the formation of brittle phases and improve the toughness of the welded joint. It's important to consider various factors like the desired level of toughness, the steel composition, and the intended application when selecting the appropriate method for improving the impact toughness of special steel. A comprehensive understanding of the steel's properties and specific requirements is crucial in determining the most suitable method for enhancing its impact toughness.

Q: What are the main factors that determine the cost of special steel?: The main factors that determine the cost of special steel include the raw material costs, production techniques and processes involved, the complexity of the steel's composition, the level of customization required, and market demand and supply dynamics.

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