Stainless Steel 17-4 PH Round Bar
Stainless Steel 17-4 PH is a precipitation-hardening martensitic stainless steel alloy known for its exceptional combination of high strength, good corrosion resistance, and excellent mechanical properties. It is widely used in aerospace, chemical processing, marine, and nuclear industries, especially for parts that require high strength and moderate corrosion resistance.
Key Features
- External options: Bare, black-painted, varnished, or anti-corrosion coated.
- Coatings: FBE, 3LPE, 3LPP, and custom options as per client requirements.
- High Strength & Hardness: Maintains strength even after heat treatment.
- Corrosion Resistance: Comparable to 304 in many industrial conditions.
- Good Machinability: Ideal for precision-machined parts.
- Dimensional Stability: Maintains tolerance after processing.
- Weldability: Weldable using standard procedures with post-weld heat treatment.
Chemical Composition
Element | Composition (%) |
Chromium (Cr) | 15.0 – 17.5 |
Nickel (Ni) | 3.0 – 5.0 |
Copper (Cu) | 3.0 – 5.0 |
Manganese (Mn) | ≤ 1.00 |
Silicon (Si) | ≤ 1.00 |
Carbon (C) | ≤ 0.07 |
Phosphorus (P) | ≤ 0.04 |
Sulfur (S) | ≤ 0.03 |
Columbium + Tantalum (Nb + Ta) | 0.15 – 0.45 |
Mechanical Properties
Property | Value |
Tensile Strength | ≥ 1310 MPa |
Yield Strength (0.2% offset) | ≥ 1170 MPa |
Elongation | ≥ 10% |
Hardness | ~38–44 HRC |
Applications
- Aerospace Components: Shafts, fasteners, engine mounts.
- Marine Hardware: High-load corrosion-resistant components.
- Chemical Processing: Pumps, valves, and fittings.
- Oil & Gas: High-pressure turbine parts and instrumentation.
- Nuclear Industry: Pressure-retaining structural components.
Available Forms
- Round Bars: Precision-engineered for high-performance applications.
- Flat Bars: For structural and industrial uses.
- Square Bars: Ideal for precision engineering.
- Hex Bars: Suitable for fasteners and custom designs.
- Custom Sizes: Manufactured to meet specific project requirements.
Equivalent Grades
Standard | Grade |
UNS | S17400 |
ASTM | A564 |
W.Nr | 1.4542 |
Surface Finish and Coatings
- Available Finishes: Black, bright, or rough-turned.
- Optional Coatings: Passivation or PTFE as per need.
Quality Assurance & Packaging
- Certifications: ASTM A564 / AMS 5643 compliant.
- Testing: UT, hardness, tensile, and IGC testing on request.
- Packaging: Secure bundling or wooden crates with clear markings.
Connect with Riyaarth Overseas for reliable 17-4 PH stainless steel round bars, engineered for strength, precision, and long-term performance.
FAQ's
Products
Industry We Serve
- Oil & Gas industries
- Chemical process industries
- Pump and valve in high pressure component
- Food industries
- Pulp and paper industry
- Aerospace industry
- Power plant
- Mechanical component
- Sugar industry
- Cement industry