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Product Overview
INTRODUCTION TO 17-4 PH STAINLESS STEEL / UNS S17400 / ASTM A564
MOKSH TUBES & FITTINGS LLP is a leading supplier, exporter, importer, and stockist of a wide range of 17-4 PH Stainless Steel (UNS S17400) products including Pipes & Tubes, Pipe Fittings, Flanges, Fasteners, Sheets & Plates, Coils, Wires, Bars, Welding Rods, Mesh, and Custom Fabricated Components.
17-4 PH Stainless Steel is a precipitation-hardening martensitic stainless steel that combines high strength, excellent corrosion resistance, and ease of heat treatment into one versatile alloy. Its nominal composition includes chromium, nickel, and copper, which allow it to achieve very high tensile and yield strengths through a simple heat treatment process.
The alloy is magnetic in all conditions, weldable using conventional techniques, and can be machined efficiently in its solution-annealed or aged states. Due to its ability to develop high mechanical properties without extensive processing, 17-4 PH is widely used in aerospace, petrochemical, marine, power generation, and general engineering industries.
It performs well in mildly corrosive environments, similar to 304 stainless steel, and offers exceptional resistance to stress corrosion cracking in many applications. Its balance of strength, toughness, and corrosion resistance makes it one of the most commonly used precipitation-hardening stainless steels worldwide.
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Chemical Composition of 17-4 PH Stainless Steel
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 15.00 – 17.50 |
| Nickel (Ni) | 3.00 – 5.00 |
| Copper (Cu) | 3.00 – 5.00 |
| Manganese (Mn) | 1.00 max |
| Silicon (Si) | 1.00 max |
| Columbium + Tantalum (Cb + Ta) | 0.15 – 0.45 |
| Carbon (C) | 0.07 max |
| Phosphorus (P) | 0.040 max |
| Sulfur (S) | 0.030 max |
| Iron (Fe) | Balance |
Mechanical Properties of 17-4 PH (H900 Condition)
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength | 1310 MPa | 190,000 psi |
| Yield Strength (0.2%) | 1170 MPa | 170,000 psi |
| Elongation | 8–12 % | 8–12 % |
| Reduction of Area | 45 % | 45 % |
| Hardness | 40–47 HRC | 40–47 HRC |
| Impact Toughness | Good transverse & longitudinal toughness | |
Note: Properties depend on heat treatment conditions such as H900, H1025, H1150, etc.
Products in 17-4 PH Stainless Steel
MOKSH TUBES & FITTINGS LLP, we supply a complete range of 17-4 PH Stainless Steel products tailored to meet diverse industrial applications. Backed by years of experience and a strong global sourcing network, we ensure top-quality materials that perform reliably under demanding and challenging service conditions.
We offer 17-4 PH Stainless Steel in various product forms to match your specific industrial requirements.
Uses and Advantages of 17-4PH stainless steel
High Strength & Hardness
Can be strengthened to very high levels through simple heat treatment processes.
Excellent Corrosion Resistance
Exhibits corrosion resistance comparable to 304 stainless steel in many environments.
Easy Fabrication & Welding
Compatible with standard manufacturing and welding techniques, minimizing production complexity.
Wide Range of Heat Treatments
Properties can be tailored for specific applications using different aging conditions (H900 to H1150).
Good Toughness & Creep Resistance
Performs reliably under both ambient and elevated temperature conditions.
Versatile Applications
Widely used in aerospace, marine, chemical, and general industrial sectors for critical components.
Applications of 17-4 PH Stainless Steel
17-4 PH Stainless Steel is widely used in applications requiring high mechanical strength and moderate corrosion resistance. Below are some of its major application areas:
Chemical Processing
Oil & Gas
Marine
Pharmaceutical
Heat Exchangers
Power Plants
WHY CHOOSE US?
FAQ’s – 17-4 PH Stainless Steel
What is 17-4 PH Stainless Steel?
17-4 PH (Precipitation Hardening) Stainless Steel is a high-strength, corrosion-resistant alloy widely used in aerospace, chemical, petrochemical, and marine industries for demanding applications.
What are its main properties?
High hardness, exceptional strength, good corrosion resistance, and excellent mechanical performance at elevated temperatures.
What is its chemical composition?
Typical composition includes:
Chromium (Cr): 15–17.5%
Nickel (Ni): 3–5%
Copper (Cu): 3–5%
Carbon (C): ≤ 0.07%
Manganese (Mn): ≤ 1%
Silicon (Si): ≤ 1%
Iron (Fe): Balance
Where is it used?
Aerospace structural components, chemical process equipment, marine shafts, pump parts, valves, and tooling applications.
Is it weldable?
Yes, with proper methods such as TIG or MIG welding; post-weld heat treatment is recommended to restore strength and corrosion resistance.
Contact Us
For inquiries, technical assistance, or to request a quote for 17-4 PH Stainless Steel products, reach out to Moksh Tubes & Fittings LLP – your trusted partner for high-performance stainless steel solutions.
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