17-4PH Stainless Steel
Yunming Metal supplies precipitation hardening stainless steel including 17-4PH and 15-5PH, known for exceptional strength and corrosion resistance. Ideal for aerospace, marine, and industrial use.
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Product Overview
17-4PH stainless steel (UNS S17400) is a martensitic precipitation hardening stainless steel known for its exceptional combination of high strength, good corrosion resistance, and excellent mechanical properties at temperatures up to 600°F (316°C). It offers a versatile solution for industries requiring structural integrity, precision, and durability under demanding conditions.
Application Areas
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Aerospace and aircraft components
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Nuclear reactor parts
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Chemical processing equipment
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Valves, flanges, and fittings
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Marine shafts and pump parts
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Oil & gas field equipment
Product Features
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High tensile and yield strength after aging
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Excellent corrosion resistance in many environments
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Good toughness in both longitudinal and transverse directions
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Easily weldable and machinable
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Heat treatable to multiple hardness conditions (H900–H1150)
Technical Specifications
| Condition | Diameter / Thickness | Width (mm / in) | Length (mm / in) | Hardness |
|---|---|---|---|---|
| Annealed | 8–300 mm / ⁵⁄₁₆″–11 ⁷⁄₈″ | up to 2000 mm / 78 ³⁄₄″ | up to 6000 mm / 236 ¹⁄₄″ | ≤ 363 HB |
| H900 | 8–250 mm / ⁵⁄₁₆″–9 ⁷⁸″ | up to 1500 mm / 59″ | up to 6000 mm / 236 ¹⁄₄″ | 44–47 HRC |
| H1025 | 8–250 mm / ⁵⁄₁₆″–9 ⁷⁸″ | up to 1500 mm / 59″ | up to 6000 mm / 236 ¹⁄₄″ | 35–40 HRC |
Manufacturing Process
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Vacuum induction melting (VIM) or ESR
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Hot rolled or forged to desired shape
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Solution treated and annealed
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Precision machining or cutting
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Precipitation hardening (H900, H1025, etc.)
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Final inspection, certification, and packaging
FAQ
Q1: What is the main benefit of 17-4PH stainless steel?
A: It delivers high strength and corrosion resistance with the flexibility of heat treatment for specific hardness needs.
Q2: Can 17-4PH be welded?
A: Yes, standard welding methods can be used, with post-weld aging to restore mechanical properties.
Q3: What is the aging process for 17-4PH?
A: It involves heating the material to specific temperatures (e.g., 900°F for H900) to achieve desired hardness.
Q4: Is 17-4PH suitable for marine environments?
A: Yes, it has moderate-to-good corrosion resistance in saltwater and marine conditions, especially in aged states.
Q5: What is the difference between 17-4PH and 304 stainless steel?
A: 17-4PH offers far greater strength and hardness, while 304 is more formable and corrosion-resistant in non-critical environments.
Still Have Questions?
Feel free to contact us for more details or to discuss your custom 17-4PH stainless steel requirements.
Our technical support team is ready to assist with specifications, certifications, and delivery.
