17-4PH stainless steel is a precipitation-hardening martensitic alloy known for its combination of high strength, corrosion resistance, and excellent toughness. These qualities make it ideal for critical parts that demand both mechanical durability and environmental stability.
Mechanical Properties in Various Heat Treatments
| Condition | Yield Strength (MPa) | Tensile Strength (MPa) | Hardness (HRC) | Elongation (%) |
|---|---|---|---|---|
| H900 | ≥1000 | ≥1275 | 40–44 | ~10 |
| H1025 | ~965 | ~1170 | 32–36 | ~13 |
| H1150 | ~860 | ~1060 | 28–32 | ~15 |
Why 17-4PH Is Suitable for High-Strength Parts
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High Mechanical Strength: Maintains structural integrity under heavy loads
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Corrosion Resistance: Comparable to 304 in many environments
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Dimensional Stability: Excellent after machining and heat treatment
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Customizable Hardness: Achieved through controlled heat treatment
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Fatigue Resistance: Suitable for dynamic and rotating parts
Typical Applications
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Aircraft fasteners and shafts
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Gas turbines and valves
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High-pressure pump components
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Injection mold inserts
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Marine and offshore equipment
17-4PH stainless steel bar delivers a rare combination of strength, corrosion resistance, and stability, making it a go-to solution for manufacturers of high-performance components. Tongyi Metal offers certified 17-4PH bars in various specifications and supports machining and custom processing to meet diverse industry requirements.
