17-4PH Stainless Steel Investment Castings

Thanks to their unique properties, 17-4PH stainless steel castings are ideal for a broad array of applications. Combined with our precision investment casting process, 17-4PH stainless steel produces complex shapes and strong, durable components. Bescast can provide outstanding 17-4PH stainless steel machinability. We partner with you throughout your product life cycle, delivering design, engineering and manufacturing expertise that makes a difference in your parts.

Stainless Steel 17-4PH Properties

17-4PH stainless steel properties are wide-ranging. First of all, the material is easy to machine and form. Additional stainless steel 17-4PH properties include:

  • Good corrosion resistance

  • Good ductility and toughness

  • Good resistance to stress corrosion cracking

  • High strength and hardness


The yield strength of 17-4PH stainless steel castings can vary up to 1000 MPa, and its hardness up to 45 HRC. Heat treating 17-4PH stainless steel gives it an array of mechanical properties for specific end uses.

Applications for 17-4PH Stainless Steel Castings

You can find 17-4PH stainless steel castings in a variety of applications. This versatile material is used to make:


  • Landing gear parts

  • Oil and gas valves
  • Heat exchangers
  • Turbine blades


Bescast has had particular success casting 17-4PH stainless steel for parts like:


  • Aerospace structural components
  • Pump shafts
  • Mechanical seals


17-4PH stainless steel castings
17-4PH stainless steel castings

Frequently Asked Questions About 17-4PH Stainless Steel Castings

Backed by decades of experience, Bescast produces superior 17-4PH stainless steel castings. Our customers rely on our investment casting expertise to create components that withstand the harshest conditions. Read on to learn more about 17-4PH stainless steel and our capabilities.

What Is 17-4PH Stainless Steel?

17-4PH stainless steel is a martensitic precipitation-hardened stainless steel. It contains iron, chromium, copper and nickel. 17-4PH stainless steel castings have excellent corrosion resistance because of the high levels of chromium, copper and nickel. They also can have higher strength and hardness than 15-5PH stainless steel castings.

What Is 17-4PH Stainless Steel's Machinability?

17-4PH stainless steel's machinability is good, although heat treating makes the material less machinable. At Bescast, machinability isn't an issue because our investment casting process produces near-net shape parts with superior surface finishes. Our components require few secondary operations.

What Services Does Bescast Offer?

Bescast provides a full suite of design, engineering and prototyping services. We use ProCAST software with finite element analysis (FEA) to simulate casting processes and ensure the best 17-4PH stainless steel castings for your application. Bescast also offers heat treating, welding and non-destructive testing. Our strong relationships with partners in tooling creation, core design and production, coatings, painting, inspection services and other special processes give our customers a competitive edge.

Trust Bescast With Your 17-4PH Stainless Steel Castings

Our expert investment casting process takes full advantage of stainless steel 17-4PH capabilities to produce outstanding components for our customers. As their design-to-production cycles compress, our customers depend on Bescast to quickly design, engineer and manufacture 17-4PH stainless steel castings to conform to their exacting requirements. Contact us today to see what Bescast can do for you.


Manufacturing Capacity

• 75,000 ft2 manufacturing facility

• 10,000 ft engineering and customer service

• 200+ full-time employees

Bescast's Current Facility

Alloys Currently Poured on a Production Basis


• 15-5PH

• 17-4PH

• 300 Series

• 400 Series


• MM509

• L605  

• X40 (S31)  

• WI-52

Nickel (vacuum)

• HastX

• IN100  

• IN625

• IN713

• IN718  

• IN738

• IN792

• MM247

• R77

• R80

• R125

• U500

Quality Certifications

• ISO9001:2015

• AS9100 Rev D

• Nadcap

• Heat Treat

• NDT (Non-Destructive Testing) (Radiography & Penetrant)

• Welding

Approved Supplier To:

• Advanced Atomization Technologies
• Collins Aerospace
• Eaton Corporation
• GE Aviation
• Parker Hannifin

• Pratt Whitney Canada
• Prat Whitney America
• Rolls Royce N.A.    
• Siemens Energy
• Solar Turbines

• Woodward