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17/4 PH | 1.4542
Key Features
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Precipitation-hardening stainless steel with high strength and hardness.
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Good corrosion resistance, comparable to SS304 in many environments.
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Heat treatable to a wide range of strength and toughness levels.
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Good corrosion resistance, comparable to SS304 in many environments.
Size Range
Round Bar
80 mm To 450 mm Diameter
Flat Bar
80mm*80mm To 510mm*260mm
About the Steel
17-4 PH stainless steel provides an outstanding balance of high strength, hardness, and corrosion resistance. Through precipitation hardening, it achieves superior mechanical properties that can be tailored via different heat treatment conditions (H900–H1150). It maintains good toughness and dimensional stability while offering moderate corrosion resistance, making it suitable for both structural and wear applications. The alloy also retains its mechanical strength at elevated service temperatures. In addition, it demonstrates excellent fatigue resistance, making it highly reliable in demanding environments.
Applications
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Aerospace Industry
Used in turbine blades, aircraft fittings, and engine components for strength and corrosion resistance.
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Petrochemical & Offshore
Applied in pumps, valves, and fasteners exposed to corrosive environments.
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Pulp & Paper Industry
Used in machinery parts requiring wear resistance and toughness.
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Medical Devices
Preferred for surgical instruments and equipment needing high precision and strength.
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General Engineering Components
Ideal for shafts, gears, and couplings requiring durability.
Manufacturing
Process flow for manufacturing 17-4 Ph steel
Melting
Ingots melted in EIF or AOD, impurities fully killed and followed LRF and VD process at Client's request. Ingots annealed
Forging
Press or Hammer Forged with reduction ratio of 3.5 to 4.5 times
Heat Treatment
Solution annealing and QT cycle post forging to H1150 or H900 or any special QT process as per Client's TDC
Quality Test
Ultrasonic, Hardness, Mechanical, Microstructure testing of the metal at a NABL approved lab
Proof Machining
Proof machining of Forged Rounds and Flats as per Client's requirements
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