Stainless Steel 17.4PH, 15.5PH Round Bars
Stainless Steel 17-4PH and 15-5PH round bars are widely recognized for their exceptional mechanical properties, corrosion resistance, and high strength. These precipitation-hardening stainless steels are designed for applications requiring superior performance in demanding environments such as aerospace, marine, chemical, and power generation industries.
Stainless Steel 17-4PH Round Bars
Stainless Steel 17-4PH (UNS S17400) is a martensitic precipitation-hardening stainless steel that offers a unique combination of high strength, corrosion resistance, and good mechanical properties. It is particularly noted for its ability to be heat treated to various strength levels.
Key Features of Stainless Steel 17-4PH
- High Strength and Hardness: Exceptional mechanical properties achieved through heat treatment.
- Corrosion Resistance: Comparable to Type 304 in most environments, with added resistance to stress corrosion cracking.
- Versatility: Suitable for machining and welding.
- Heat Treatment Flexibility: Tailored to achieve specific mechanical properties.
Applications of Stainless Steel 17-4PH Round Bars
- Aerospace components
- Nuclear reactor parts
- Valve and pump parts
- Marine applications
- Chemical processing equipment
Chemical Composition of Stainless Steel 17-4PH
| Element | Percentage |
|---|---|
| Chromium (Cr) | 15.0-17.5 |
| Nickel (Ni) | 3.0-5.0 |
| Copper (Cu) | 3.0-5.0 |
| Carbon (C) | 0.07 (maximum) |
| Manganese (Mn) | 1.0 (maximum) |
| Silicon (Si) | 1.0 (maximum) |
| Phosphorus (P) | 0.04 (maximum) |
| Sulfur (S) | 0.03 (maximum) |
Stainless Steel 15-5PH Round Bars
Stainless Steel 15-5PH (UNS S15500) is a refined version of 17-4PH, offering enhanced toughness and improved ductility. It is commonly used in applications requiring excellent corrosion resistance, high strength, and superior fatigue properties.
Key Features of Stainless Steel 15-5PH
- Improved Toughness: Superior ductility and impact resistance compared to 17-4PH.
- Corrosion Resistance: Outstanding resistance to both atmospheric and chemical corrosion.
- Enhanced Mechanical Properties: Stronger and tougher under repeated loads.
- Heat Treatment: Excellent flexibility for achieving desired mechanical properties.
Applications of Stainless Steel 15-5PH Round Bars
- Aerospace structural components
- Medical equipment
- Chemical processing equipment
- Power generation parts
- High-performance fasteners
Chemical Composition of Stainless Steel 15-5PH
| Element | Percentage |
|---|---|
| Chromium (Cr) | 14.0-15.5 |
| Nickel (Ni) | 3.5-5.5 |
| Copper (Cu) | 2.5-4.5 |
| Carbon (C) | 0.07 (maximum) |
| Manganese (Mn) | 1.0 (maximum) |
| Silicon (Si) | 1.0 (maximum) |
| Phosphorus (P) | 0.04 (maximum) |
| Sulfur (S) | 0.03 (maximum) |
Mechanical Properties
| Property | 17-4PH | 15-5PH |
|---|---|---|
| Tensile Strength (MPa) | 930-1310 | 1030-1380 |
| Yield Strength (MPa) | 725-1100 | 860-1170 |
| Elongation (%) | 10-15 | 10-15 |
| Hardness (HRC) | Up to 44 | Up to 45 |
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.
Manufacturing Standards
- ASTM A564: Specification for high-strength precipitation-hardening stainless steel bars.
- AMS 5643: Aerospace specification for 17-4PH stainless steel.
- AMS 5659: Aerospace specification for 15-5PH stainless steel.
Marking & Packaging
- Marking: Each bar is marked with grade, size, heat number, and batch number for full traceability.
- Packaging: Packed in wooden crates or wrapped in corrosion-resistant materials to ensure safe transit.
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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