An Expert’s Guide to 17-4 PH Forgings

17-4 PH is one of the most popular stainless steel alloys due to its numerous properties, such as high strength, good corrosion resistance, and hardness. The alloy’s unique combination of strength, toughness, and resistance to corrosion makes it a popular choice for various industries, including aerospace, petrochemical, and medical. This blog post will discuss everything you need about 17-4 PH forgings.

An Expert’s Guide to 17-4 PH Forgings: Everything You Need to Know


What is 17-4 PH Forgings?

17-4 PH Forgings are a type of stainless steel alloy made from a combination of Chromium (17%), Nickel (4%), Copper, Manganese and other trace elements. This metal alloy offers excellent strength, hardness, and corrosion resistance. It is widely used to produce forged parts for aerospace, medical and nuclear applications due to its extreme durability in harsh environments. The tensile strength of this material can reach up to 200 ksi, which makes it one of the strongest forged metals available today. Its versatility means it can be used on various high-performance components requiring superior structural rigidity and resistance to wear or shock loads.

Properties of 17-4 PH Forgings

High Strength and Corrosion Resistance

17-4 PH forgings are known for their high strength and corrosion resistance. The material comprises chromium, nickel, copper, and other elements that give it superior properties to other stainless steel alloys. 17-4 PH Forgings have a tensile strength of up to 180 ksi (1241 MPa) and a yield strength of up to 150 ksi (1034 MPa). It also has excellent resistance to corrosion in both acidic and basic environments, making it ideal for applications that require long-term exposure to harsh chemicals or liquids.

High-Temperature Strength

17-4 PH forgings also have excellent high-temperature strength. The material can maintain its strength at temperatures up to 600°F (316°C), making it suitable for applications where the part will be exposed to high temperatures for extended periods. The material retains its corrosion resistance even at elevated temperatures, making it an ideal choice for parts used in extreme conditions.

Good Formability

In addition to its excellent mechanical properties, 17-4 PH forgings also have good formability characteristics. The material can be easily shaped into complex shapes using traditional forging methods such as hammering or pressing. It can also be welded using conventional techniques such as TIG or MIG welding with appropriate filler metals. This makes 17-4 PH forgings an ideal choice for parts needing complex shapes or welding during assembly.

Forging 17-4 PH

Forging is the process of shaping metals, and 17-4 PH is an ideal candidate for the forging process due to its excellent properties. The temperature for hot forging ranges from 1900°F to 2100°F, while cold forging is done at room temperature. 17-4 PH forgings can withstand high stress and resist heat treatment distortion. This means that 17-4 PH forgings can be used in high-temperature environments without losing their properties.

Applications of 17-4 PH Forgings


17-4 PH forgings are commonly used in aerospace due to their superior strength and corrosion resistance. The forgings are often used for landing gear, engine mounts, and airframes. Additionally, 17-4 PH forgings are often used in manufacturing aircraft engines as they can withstand high temperatures and pressures.


17-4 PH forgings are also commonly used in the automotive industry due to their strength and durability. The forgings can be used for components such as suspension arms, drive shafts, and steering columns. Additionally, 17-4 PH forgings can be used for engine components such as piston rods and camshafts as they can resist wear and tear from long-term use.


17-4 PH forgings are also frequently used in the marine industry due to their corrosion resistance and durability. The forgings can be used for propellers, rudders, stern drives, and outboard engines. Additionally, 17-4 PH forging is often used for ship hulls due to its ability to resist corrosion from saltwater exposure.


In conclusion, 17-4 PH is an excellent stainless steel alloy due to its unique properties, including high strength, toughness, and corrosion resistance. It is popular in various industries, including aerospace, medical, and petrochemical. The forging process for 17-4 PH is relatively straightforward, and the alloy can withstand various temperatures while maintaining its properties. If you’re looking for a metal alloy that can withstand high-stress environments and maintain strength, 17-4 PH forgings may be the perfect solution.

An Expert’s Guide to 17-4 PH Forgings

by Renine Metalloys time to read: 3 min