Forgings made from 15-5 PH steel are available with the fastest lead times in the industry. We can manufacture custom forgings up to 4,000 pounds, from 2.5″ to 24″ in diameter or thickness, and up to 12′ in length, based on your specifications. A forging is ideal for long-run or short-run production, as well as prototyping purposes.

Stainless Steel 15-5 PH Properties

The 15-5 PH stainless steel is a martensitic precipitation hardening steel which offers both high strength as well as high hardness. The corrosion resistance of this steel is greater than that of straight chromium grades, such as 410, and it is comparable to that of chromium-nickel steels.

The 15-5 PH stainless steel is capable of excellent transverse notch toughness and ductility as well as very good uniformity of properties. At high temperatures (up to 1,100°F/593°C), it exhibits exceptional resistance to oxidation. Chemically balanced, this material has an almost completely ferrite-free microstructure, which makes it suitable for forming into crucibles and forgings due to its high degree of workability.


Precipitation-hardening steels are classified into one of three groups based on their final microstructures after heat treatment, which are determined by the precipitation-hardening process. There are three kinds of stainless steel, or martensitic (for example, 17-4 PH), semi-austenitic (for example, 17-7 PH), and austenitic (for example, A-286).

Martensitic Alloys

Martensitic precipitation hardening stainless steels have a predominantly austenitic structure after annealing at temperatures that range from around 1040 to 1065 °C, which corresponds to a high annealing temperature. As soon as they are cooled to room temperature, they undergo a transformation that causes austenite to be transformed into martensite upon cooling.

Semi-austenitic Alloys

A semi-austenitic precipitation hardening steel with an annealed surface is not as hard as a martensitic precipitation hardening steel, and it can be cold worked. At room temperature, semi-austenitic steels retain their austenitic structure, but when extremely low temperatures are reached, they will form martensite, which is a very hard material.

Austenitic Alloys

The austenitic precipitation hardening steels retain their austenitic structure even after they have been annealed and hardened through ageing. A precipitation hardening phase will become soluble at the annealing temperature of 1095 to 1200°C, but not below 1095°C. The solution remains in solution even when it is rapidly cooled. When reheated to 650°C to 760°C, precipitation occurs as a result of the heating. The material becomes harder and stronger as a result of this process. The hardness of these steels remains lower than that of martensitic or semi-austenitic precipitation hardening steels. There is no magnetic property to austenitic alloys.


A precipitation-hardening stainless steel has yield strengths that range from 515 MPa to 1415 MPa. The tensile strength of this material ranges from 860 MPa to 1520 MPa. The elongation ranges from 1 to 25%. A cold working process can be used before ageing in order to facilitate even greater strengths.

Alloy 15-5 PH Stainless Steel Composition

Stainless Steel 15-5 Grade Hardness

A tempered stainless steel 15-5 PH can be hardened to Brinell scale hardnesses of up to 420, and Rockwell hardnesses of up to C40 when properly tempered.

Heat Treating 15-5 PH Alloy Stainless Steel

Stainless steel 15-5 can be solution heat treated at approximately 1,900 degrees F/1,038 degrees C. It must be allowed to cool to below 90 degrees F/32 degrees C in order for the martensite transformation to take place completely.

Alloy 15-5 Stainless Steel Machinability

The stainless steel 15-5 PH is highly machineable, similar to the stainless steel 304. The machinability of a material improves with an increase in aging temperature. There is a significant difference in cutting speed when annealed 15-5 stainless steel forgings are compared to carbide tools, and carbide tools can double this speed.

Benefits of 15 5ph Stainless Steel Bar

A 15 5ph round bar is used in a wide range of industries and applications, including chemical processing, machine construction, and manufacturing, to name just a few. There are many different types of 15 5ph stainless steel bars on the market, and their applications will depend largely on the size and shape of the bar. There are many industries that use stainless steel bars, including the automotive, chemical, and construction industries. It is corrosion resistant and can withstand high temperatures as well as being resistant to corrosion.

A 15-5PH bar is a popular choice due to its ability to resist corrosion and rust, among other benefits. Additionally, it has excellent wear resistance, as it is a very hard material that is highly resistant to wear. The types of stainless steel bars that are made using 15 5ph have a low thermal conductivity, which makes them ideal for use in high-temperature applications such as industrial processes.

It is widely accepted that 15 5PH round bar is a metal that is widely used in the construction industry. As well as kitchen appliances, it is also a popular choice for household items and other items that are used in everyday life. There are also numerous uses for 15 5ph stainless steel bar in the automotive industry as well. While stainless steel can certainly be used for these purposes, it does not always have to be the case. There are many other industries that use this metal as well, such as aerospace manufacturing and medical technology, that also use a great deal of this metal.

The 15 5ph stainless steel bar is the most popular option when it comes to buying a stainless steel bar. The 15 5PH round bar has a long lifespan and will not corrode over time due to its high corrosion resistance. It’s also easy to clean. Prices for stainless steel bars are rising. This is due to the fact that there has been an increase in demand for these products in the market recently. In addition to this, this has resulted in an increase in the production of these products as well.

We at Purohit Pipe Industries are here for you if you are looking for an efficient steel round bar supplier and a centerless ground bar supplier who can provide you with quality 15-5ph Stainless bar stocks and 15-5ph Stainless round bar stocks at a reasonable price. To assure that precision ground bars are delivered to our clients in accordance with their specifications, we work closely with them so that we can meet their requirements.


  • Equipment used in injection molding
  • Tooling for medical use
  • Processing of food
  • The extrusion dies
  • Components for manifolds
  • The compression mold
  • Manufacturing of plastics