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Stainless Steel Grade 15-5 PH | UNS# S15500

Stainless Steel 15-5 PH (UNS S15500): Stainless Steel grade 15-5 PH is a martensitic precipitation-hardening stainless steel with high strength and hardness, and exhibits excellent corrosion resistance.

Stainless Steel 15-5 PH: forms, specifications and uses

Stainless Steel 15-5 PH is supplied to specifications including AMS 2300, AMS 5659 and ASTM A564.

Typical uses of Stainless Steel 15-5 PH include aircraft structural applications, power generation, valves and shafts, gears and pumps, fasteners, oil & gas and food processing equipment.

For Stainless Steel 15-5 PH, request a quote online or contact your nearest Titanium Industries location. Alloy data on this page is for reference only, not for design.

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Stainless Steel grade 15-5 PH is a martensitic precipitation-hardening stainless steel with high strength and hardness, and exhibits excellent corrosion resistance. When compared with 17-4 PH, 15-5 PH demonstrates higher transvers toughness, ductility, better overall mechanical properties, and better forgeability. This alloy is strengthened significantly by a low temperature heat treatment and meets stringent requirements for aerospace and nuclear applications.

Stainless Steel 15-5 PH Specifications:

Stainless Steel 15-5 PH products offered at all Titanium Industries' locations:

  • Stainless Steel Alloy 15-5 PH Round Bar
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Stainless Steel 15-5 PH Applications:

  • Aircraft Structural Applications
  • Power Generation
  • Valves and Shafts
  • Gears and Pumps
  • Fasteners
  • Oil & Gas
  • Food Processing Equipment

Discounted Stainless Steel

DISCLAIMER: Alloy data sheets are for reference only, not for design purposes.

Stainless Steel 15-5 PH | UNS# S15500 — Table 1
Chemical Composition
Fe 75% Cr 14.48% Ni 4.5% Cu 3.5% Mn <=1%
Si <=1% Nb+Ta 0.3% C <=0.07% P <= 0.04% S <= 0.03%
Stainless Steel 15-5 PH | UNS# S15500 — Table 2
PHYSICAL PROPERTIES
Density Electrical conductivity (% IACS) Thermal conductivity (BTU-in/hr-ft²-°F) Specific heat capacity Thermal expansion (1/°F) Melting Point (°F)
0.282 2.24 124 0.1 0.00000578 2560
Stainless Steel 15-5 PH | UNS# S15500 — Table 3
Mechanical Properties
Property Minimum Maximum
Yield Strength Range (Rp0.2 Offset) (ksi) 140 200
Tensile Strength Range (Rm) (ksi) 115 210
Elongation (AL=5 x Ø) 7.6% 12.0%
Brinell Hardness (H) 294 432
Modulus of Elasticity (ksi) (E): 29000
Machineability General Index: 45%

Stainless Steel 15-5 PH: questions and answers

What is Stainless Steel 15-5 PH?

Stainless Steel grade 15-5 PH is a martensitic precipitation-hardening stainless steel with high strength and hardness, and exhibits excellent corrosion resistance.

Which specifications does Stainless Steel 15-5 PH meet?

AMS 2300, AMS 5659 and ASTM A564.

What is Stainless Steel 15-5 PH used for?

Aircraft structural applications, power generation, valves and shafts, gears and pumps, fasteners, oil & gas and food processing equipment.