Stainless Steel 15-5 is a precipitation hardening martensitic stainless steel. It is used in applications requiring better corrosion resistance and transverse properties compared to other similar martensitic grades. Strength and toughness desired can be altered by temperate range in the heat treatment process.

Standards
  • UNS S15500
  • AMS 5659
  • ASTM A564
Stainless-Steel-15-5-PH
15-5 PH Applications
  • Valves
  • Aircraft Parts
  • Gears
  • Pump Parts
Composition(%)
  • Carbon 0.070 Max
  • Chromium 14.0-15.50
  • Columbian + Tantalum 0.15-0.45
  • Copper 2.50-4.50
  • Manganese 1.00 Max
  • Nickel 3.50-5.50
  • Phosphorus 0.040 Max
  • Silicon 1.00 Max
  • Sulfur 0.30 Max

15-5 Stainless Steel Mechanical Properties

Material TypeConditionUltimate Tensile Strength (PSI)0.2% Yield Strength (PSI)Elongation (% In 2in.)Reduction Of Area (%)Hardness BrinellHardness Rockwell
15-5 PHH900190,000170,000615388C40
 H1025155,000145,000827331C35
 H1075145,000125,000928311C32
 H1150135,000105,0001130277C28
 H1150-M115,00075,0001435255C24