Specialty Products / Superalloys & Metals / Specialty Stainless Steels / 17-4 PH®
17-4 PH®
17-4 PH® is a precipitation-hardening stainless steel used for high strength with practical corrosion resistance. It is one of the most common choices for shafts, fasteners, fittings, and structural parts that need more strength than austenitic stainless grades can provide. EQI supplies 17-4 PH in bar, plate, and finished components.
17-4-PH® is a registered trademark of Cleveland-Cliffs Steel Corporation.
- UNS S17400
- Precipitation-hardening martensitic stainless
- Also known as: Type 630
Request a Quote for 17-4 PH®
To get started, request a quote using the form below and we will get back to you. Please note that the quantity needed to quote or supply a specific alloy grade is typically 500-1,000 lbs, depending on the material.
Key Properties
- High strength after age hardening
- Good corrosion resistance for a hardenable stainless
- Useful toughness and dimensional stability
- Common in aerospace, energy, and general engineering
- Available in multiple heat-treated conditions
Composition
Applications
Common industries and end-use applications include Food & Beverage Processing, Industrial Equipment & Machinery, and Medical & Life Sciences.
- Shafts and stems
- Fasteners and fittings
- Pump and valve components
- Aerospace structural hardware
- Molds, tooling, and general engineered parts
Request a Quote
Whether you're sourcing raw material or need a manufactured component produced from a specialty alloy, the EQI team can help.
Why Choose EQI
Your Single Source for Specialty Alloys and Precision Manufacturing
EQI combines specialty alloy sourcing with manufacturing expertise, allowing customers to move from raw material supply to finished components through a single partner.
Our team supports OEMs and manufacturers by sourcing difficult-to-procure alloys and producing components for demanding applications.
Key Advantages
- Global sourcing and foundry partnerships
- Expertise in high-temperature and high-performance alloys
- Precision machining and finished component manufacturing
- Reliable lead times and consistent quality
- Inventory management and just-in-time delivery programs
- Engineering support for complex alloy applications