GB/T 20878 AISI 441 Stainless Steel Coil – Product Overview

The GB/T 20878 AISI 441 Stainless Steel Coil is a ferritic stainless steel alloy with a high chromium content (17-19%) and a small amount of titanium, which enhances its corrosion resistance and stability at high temperatures. This alloy is primarily known for its excellent resistance to oxidation, high-temperature strength, and good weldability. AISI 441 stainless steel is widely used in automotive, industrial, and exhaust systems where excellent performance at elevated temperatures and resistance to corrosion are critical. Yuanchi Metal offers high-quality GB/T 20878 AISI 441 Stainless Steel Coils, designed to meet the stringent demands of various industries.

Unique Features of GB/T 20878 AISI 441 Stainless Steel Coil

• Superior High-Temperature Resistance: AISI 441 stainless steel exhibits excellent resistance to oxidation at elevated temperatures, making it ideal for exhaust systems and high-temperature applications.
• Corrosion Resistance: With its high chromium content and addition of titanium, AISI 441 offers superior resistance to corrosion, especially in aggressive environments like acidic and mildly corrosive atmospheres.
• Good Weldability: The material is easy to weld, and the presence of titanium stabilizes the grain structure, preventing the formation of chromium carbides during welding, which can cause corrosion.
• Outstanding Formability: AISI 441 offers excellent formability, which makes it easy to process into complex shapes, providing flexibility in various manufacturing processes.
• Magnetic Properties: Being a ferritic stainless steel, AISI 441 retains its magnetic properties, which can be advantageous in certain applications where magnetic materials are required.

Technical Specifications of GB/T 20878 AISI 441 Stainless Steel Coil

Applications of GB/T 20878 AISI 441 Stainless Steel Coil

1. Automotive Exhaust Systems: Due to its high temperature and corrosion resistance, AISI 441 is widely used in the manufacture of automotive exhaust systems, including catalytic converters and mufflers.
2. Heat Exchangers: AISI 441 is used in heat exchangers, where it is exposed to high temperatures and corrosive gases. Its ability to withstand these conditions makes it ideal for use in this industry.
3. Industrial Equipment: This stainless steel grade is commonly used in industrial applications such as furnaces, chemical reactors, and boilers, where high temperatures and corrosive environments are present.
4. Pressure Vessels: AISI 441 is used in pressure vessels and storage tanks, especially in industries where resistance to high temperatures and mild corrosion is essential.
5. Furnace Parts: It is ideal for furnace components such as tubes, trays, and liners, where high temperature oxidation resistance is critical for performance and longevity.

Packaging and Shipping

At Yuanchi Metal, we prioritize the safe and efficient packaging and transportation of our GB/T 20878 AISI 441 Stainless Steel Coils. Each coil is wrapped in protective plastic film to prevent contamination and damage during transit. For larger orders, we utilize wooden pallets or steel crates to ensure stability and minimize movement. Whether you require domestic or international delivery, we provide flexible shipping options, including air and sea freight. Our logistics team guarantees timely and secure delivery, ensuring that your order arrives on schedule and in excellent condition.

Frequently Asked Questions (FAQ)

1. What is the corrosion resistance of AISI 441?
   • AISI 441 offers excellent resistance to oxidation and corrosion, particularly in high-temperature and mildly corrosive environments. It is commonly used in automotive exhaust systems and other applications exposed to harsh conditions.
2. Can AISI 441 stainless steel be welded?
   • Yes, AISI 441 is weldable, and the addition of titanium prevents the formation of chromium carbides during welding. This ensures good weldability and helps maintain corrosion resistance.
3. What is the tensile strength of AISI 441 stainless steel?
   • The tensile strength of AISI 441 typically ranges from 480 MPa to 630 MPa, making it suitable for applications requiring both strength and corrosion resistance.
4. What is the main advantage of AISI 441 over other stainless steels?
   • AISI 441 is particularly well-suited for high-temperature applications due to its excellent oxidation resistance, which makes it ideal for exhaust systems, furnace components, and other high-heat environments.
5. Is AISI 441 stainless steel magnetic?
   • Yes, AISI 441 is a ferritic stainless steel, which means it retains its magnetic properties, unlike austenitic stainless steels, which are non-magnetic.
6. What surface finishes are available for AISI 441 stainless steel?
   • AISI 441 is available in several surface finishes, including 2B (matte finish), BA (bright annealed), No.4 (brushed), and No.8 (mirror finish), depending on the specific requirements of the application.