15-5PH Plate: A High-Strength, Corrosion-Resistant Stainless Steel
Overview
15-5PH plate is a type of precipitation-hardening stainless steel plate that offers high strength, corrosion resistance, and excellent mechanical properties. It is a versatile material that is widely used in various industries, including aerospace, chemical processing, and power generation.
Chemical Composition
The chemical composition of 15-5PH plate is as follows:
- Carbon (C): 0.07%
- Manganese (Mn): 1.00%
- Phosphorus (P): 0.040%
- Sulfur (S): 0.030%
- Silicon (Si): 1.00%
- Chromium (Cr): 14.0-15.5%
- Nickel (Ni): 3.5-5.5%
- Columbium (Cb): 0.10-1.00%
- Copper (Cu): 2.5-4.0%
Mechanical Properties
15-5PH plate has excellent mechanical properties, including:
- Tensile Strength: 135,000-145,000 psi (930-1000 MPa)
- Yield Strength: 115,000-130,000 psi (790-900 MPa)
- Elongation: 10-15%
- Hardness: Rockwell C 38-42
Corrosion Resistance
One of the key advantages of 15-5PH plate is its excellent corrosion resistance. It has a high chromium content, which provides a natural barrier against corrosion. Additionally, the presence of molybdenum and copper helps to improve its resistance to corrosion in acidic and seawater environments.
Applications
15-5PH plate is widely used in various industries, including:
- Aerospace: Engine components, fasteners, and other high-stress applications
- Chemical Processing: Equipment and components for handling corrosive chemicals
- Power Generation: Components for nuclear and fossil fuel power plants
- Marine Hardware: Shafts, propellers, and other marine equipment
Heat Treatment
15-5PH plate can be heat-treated to enhance its mechanical properties. The typical heat treatment process involves:
- Solution annealing at 1900°F (1040°C) followed by air cooling
- Aging at 1400°F (760°C) for 4-6 hours
Conclusion
15-5PH plate is a high-strength, corrosion-resistant stainless steel material that offers excellent mechanical properties and corrosion resistance. Its versatile properties make it an ideal choice for various industries, including aerospace, chemical processing, and power generation.
