15-5PH Stainless Steel | Properties, Applications & Supplier – niftyalloys

15-5PH Stainless Steel (UNS S15500 / WNR 1.4545)  is a precipitation hardening martensitic stainless steel with elevated strength, toughness, and satisfactory corrosion resistance. An improvement over 17-4PH, 15-5PH possesses improved transverse toughness and ductility and is a preferred industry choice for demanding markets such as aerospace, chemical processing, oil & gas, marine, power generation, and defense.

We at niftyalloys supply superior quality 15-5PH Stainless Steel as bars, plates, sheets, pipes, tubes, and forgings sourced from reputed mills, complete with Mill Test Certificates (MTCs) to ensure global standard compliance.. With our global presence and non-negotiable commitment to global standards, niftyalloys ensures you receive guaranteed material for critical applications.

If you are looking for a reliable 15-5PH stainless steel supplier in UAE, Nifty Alloys provides a wide range of sizes, prompt deliveries, and competitive prices.

What is 15-5PH Stainless Steel?

15-5PH (15% Chromium – 5% Nickel Precipitation Hardening) is a martensitic stainless steel developed as an improvement over 17-4PH stainless steel. It offers:

• High strength and hardness
• Excellent corrosion resistance
• Superior toughness
• Good weldability and machinability

Because of these properties, 15-5PH stainless steel is widely used in aerospace, defense, petrochemical, and marine industries.

You may also check our 17-4PH Stainless Steel and 304 vs 316 Stainless Steel comparison for related grades.

Key Features & Benefits of 15-5PH Stainless Steel

Choosing 15-5PH Stainless Steel offers several advantages:

• High Strength – higher mechanical strength than standard stainless steels.
• Corrosion Resistance – excellent resistance to atmospheric corrosion, marine environments, and mild chemical exposure.
• Toughness & Ductility – superior transverse toughness compared to 17-4PH.
• Good Weldability – can be welded using conventional methods.
• Heat Treatable – mechanical properties enhanced via precipitation hardening.
• Dimensional Stability – minimal distortion during heat treatment.
• Versatility – suitable for aerospace, oil & gas, marine, and industrial applications.