17-4PH ALLOYS UNS S17400 / AMS 5604 / DIN/EN 1.4542 / JIS SUS 630

17-4PH alloy, also designated as UNS S17400, AMS 5604,DIN/EN 1.4542, and JIS SUS 630, is a precipitation-hardened stainless steel valued for its high strength, excellent toughness, and reliable corrosion resistance. Its adaptable properties make it suitable for a wide range of demanding environments.

Capable of maintaining mechanical integrity at temperatures up to 600°F (316°C), 17-4PH offers a balance of hardness, durability, and resistance to both oxidation and corrosion. These qualities make it a trusted material in critical sectors, including aerospace, marine, energy, and petrochemical industries.

This stainless steel grade is ideal for components that require strength, wear resistance, and long-term performance in challenging operating conditions.

17-4PH Alloy Sheet | Plate

17-4PH Alloy sheets and plates are available in various thicknesses and sizes, making them suitable for aerospace, automotive, and industrial applications that require high strength and good corrosion resistance.

17-4PH Alloy Round Bar | Rod

Round bars and rods in 17-4PH Alloy are available in multiple diameters and lengths, suitable for precision machining and manufacturing parts that need to withstand high stresses and maintain toughness.

17-4PH Alloy Strip | Coil

Offered in strips and coils, 17-4PH Alloy is used for applications that require strong, flexible materials, such as in high-stress springs and components.

17-4PH Alloy Applications

• Utilized in critical aerospace components like landing gear, turbine blades, and structural parts due to its high strength and corrosion resistance.

17-4PH Alloy Properties

• Tensile Strength: Exhibits high tensile strength, typically around 1,200 MPa, making it suitable for demanding applications.
• Density: Approximately 7.8 g/cm³, providing a good strength-to-weight ratio.
• Thermal Conductivity: Moderate thermal conductivity suitable for various applications.
• Corrosion Resistance: Excellent resistance to oxidation and corrosion, particularly in marine and acidic environments.

Machining 17-4PH Alloy

• Cutting: Use high-speed steel or carbide tools for cutting. Precision cutting techniques such as laser or water jet cutting are recommended for detailed work.
• Drilling: Employ carbide drills for drilling 17-4PH Alloy. Proper cooling and lubrication are essential to prolong tool life and achieve accurate holes.
• Turning: Carbide inserts are preferred for turning. Maintain consistent cutting speeds and effective cooling to ensure optimal performance.
• Milling: Use carbide end mills with adequate cooling to manage heat and maintain precision during milling operations.
• Grinding: For grinding, use aluminum oxide or CBN wheels to achieve precise tolerances and a high-quality surface finish. Adequate cooling is necessary to prevent overheating and ensure dimensional accuracy.

Chemical Composition

• Copper (Cu): Min 3.00%, Max 5.00%
• Manganese (Mn): Max 1.00%
• Phosphorus (P): Max 0.04%
• Silicon (Si): Max 1.00%
• Nickel (Ni): Min 3.00%, Max 5.00%
• Carbon (C): Max 0.07%
• Sulfur (S): Max 0.03%
• Chromium (Cr): Min 15.00%, Max 17.50%
• Iron (Fe): Balance