439 Stainless Steel Plate/Sheet Details
Overview
439 stainless steel plate/sheet is a ferritic stainless steel known for its excellent corrosion resistance, good weldability, and high formability. It contains stabilizing elements such as titanium, which improve its resistance to intergranular corrosion and provide enhanced mechanical properties. This steel is a popular choice for applications requiring good corrosion resistance and formability.
Key Characteristics
Excellent Corrosion Resistance: Provides superior resistance to corrosion, especially in oxidizing environments.
Good Formability: Offers excellent formability, making it suitable for complex shapes and deep draws.
High Temperature Resistance: Maintains good oxidation resistance and strength at elevated temperatures.
Stabilized Composition: Titanium stabilization improves resistance to intergranular corrosion and enhances mechanical properties.
Weldability: Exhibits good weldability, allowing for ease of fabrication and joining processes.
Magnetic Properties: Exhibits magnetic properties in both the annealed and cold-worked conditions.
Chemical Composition
Carbon (C): ≤ 0.03%
Manganese (Mn): ≤ 1.00%
Silicon (Si): ≤ 1.00%
Phosphorus (P): ≤ 0.040%
Sulfur (S): ≤ 0.030%
Chromium (Cr): 17.0-19.0%
Nickel (Ni): ≤ 0.50%
Titanium (Ti): ≥ 0.20% + 4xC
Common Applications
Automotive Exhaust Systems: Widely used in automotive exhaust systems and components due to its good corrosion and heat resistance.
Heat Exchangers: Suitable for use in heat exchangers and other equipment requiring good thermal conductivity and corrosion resistance.
Kitchen Equipment: Used in kitchen appliances and equipment, including sinks, countertops, and cookware, for its aesthetic appeal and durability.
Architectural Applications: Employed in architectural elements such as facades and decorative trim for its corrosion resistance and formability.
Food Processing Equipment: Ideal for food processing and handling equipment due to its non-reactive surface and ease of cleaning.
Advantages
Superior Corrosion Resistance: Provides excellent resistance to corrosion, particularly in oxidizing and mildly corrosive environments.
High Formability: Easily formed, bent, and shaped, making it suitable for a wide range of applications.
Good Oxidation Resistance: Maintains structural integrity and appearance at high temperatures, offering reliable oxidation resistance.
Improved Mechanical Properties: Stabilized with titanium, providing enhanced mechanical properties and resistance to intergranular corrosion.
Excellent Weldability: Can be welded using standard techniques without compromising its corrosion resistance or mechanical properties.
Magnetic Properties: Magnetic in both annealed and cold-worked conditions, useful in applications requiring magnetic properties.
Summary
439 stainless steel plate/sheet is a versatile and high-performance material designed for applications requiring superior corrosion resistance, good formability, and high-temperature resistance. The addition of titanium improves its mechanical properties and resistance to intergranular corrosion, making it ideal for automotive exhaust systems, heat exchangers, kitchen equipment, architectural applications, and food processing equipment.
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