17-4PH (UNS S17400) conforms to AMS 5604, AMS 5622 & AMS 5643.

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17-4PH precipitation hardening stainless steel is highly suitable for engineering applications requiring much higher strength.

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The nickel-chromium-based alloy combines this strength with high toughness, resulting in a material with excellent mechanical properties. We stock and supply 17-4PH stainless steel bars in various sizes, shapes and tempers to suit your engineering requirements. Precipitation hardening gives the alloy the capacity for mechanical properties to be precisely crafted and, once heat-treated, results in a product with considerably higher strength. Additional performance benefits include high fatigue resistance and good stress corrosion resistance. 17-4PH also offers improved galling resistance and good corrosion resistance.

Suitability:

17-4PH is highly suitable for motorsport engineering applications requiring high strength and toughness with good corrosion resistance. Typical applications include valve stems, engine gear components and fasteners.

Machining:

The material is straightforward to machine and is readily weldable by conventional methods. Unlike standard hardenable stainless steel alloys, 17-4PH does not require pre or post-heating.

About SHP:

Smiths High Performance is a leading stockholder and supplier of high-performance engineering materials. We are material supply chain partners supporting high-technology motorsport market sectors, including Formula 1 and MotoGP.