17-4PH H1025 Mechanical Properties
Overview
17-4PH H1025 is a high-strength, precipitation-hardened stainless steel alloy that offers excellent mechanical properties, corrosion resistance, and weldability. This grade is widely used in various industries, including aerospace, chemical processing, and power generation, due to its unique combination of properties.
Mechanical Properties
Tensile Properties
- Ultimate Tensile Strength (UTS): 145,000 psi (1000 MPa)
- Yield Strength (YS): 115,000 psi (790 MPa)
- Elongation at Break: 10%
Hardness
- Rockwell Hardness (HRB): 38-42
- Vickers Hardness (HV): 370-420
Impact Properties
- Charpy V-Notch Impact: 60 ft-lb (81 J)
Fatigue Properties
- Fatigue Strength: 70,000 psi (480 MPa) at 10^7 cycles
Creep Properties
- Creep Rupture: 70,000 psi (480 MPa) at 1000 hours
Physical Properties
- Density: 0.282 lb/in^3 (7.80 g/cm^3)
- Specific Heat Capacity: 0.12 BTU/lb-°F (0.50 J/g-°C)
- Thermal Conductivity: 15.1 BTU/ft-hr-°F (2.60 W/m-°C)
- Electrical Resistivity: 720 ohm-cm
Corrosion Resistance
17-4PH H1025 exhibits excellent corrosion resistance in various environments, including:
- Atmospheric Corrosion: Resistant to corrosion in both rural and industrial atmospheres
- Acid Corrosion: Resistant to corrosion in sulfuric acid, hydrochloric acid, and phosphoric acid
- Alkaline Corrosion: Resistant to corrosion in sodium hydroxide and calcium hydroxide
Applications
17-4PH H1025 is widely used in various industries, including:
- Aerospace: Structural components, fasteners, and engine components
- Chemical Processing: Equipment, vessels, and piping
- Power Generation: Turbine components, generator components, and structural components
- Marine: Propeller shafts, pumps, and valves
Conclusion
17-4PH H1025 is a high-strength, corrosion-resistant stainless steel alloy that offers excellent mechanical properties, making it an ideal choice for various industrial applications. Its unique combination of properties, including high strength, corrosion resistance, and weldability, makes it a popular choice for engineers and designers.
