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15-5 Stainless Steel Bar


15-5 stainless steel is a martensitic, precipitation-hardening material with chromium, nickel and copper.  It is often a first choice in the aerospace industry for fasteners and structural components.  Its unique structure provides increased toughness and better corrosion resistance than its predecessor, 17-4 PH.  Both inclusion control and a minimized amount of delta ferrite as compared to 17-4 stainless steel contribute to the greater toughness of 15-5.  The alloy is further strengthened by a low temperature heat treatment which precipitates a copper containing phase in the alloy.  15-5 PH is able to meet the stringent mechanical properties required in the aerospace and nuclear industries. 

 


  • 15-5 Bar
    15-5 Bar

15-5 Bar

Standard Inventory Specifications

  • UNS S15500
  • ASTM A564
  • AMS 5659

Common Trade Names

  • 15-5 PH
  • AK Steel 15-5 PH®
  • ATI 15-5™
  • ATI 15-5-MIL™

Inventory Size Range

  • Bar : 0.500" - 6.500"

Please contact us for more details.

The technical data provided is for information only and not for design purposes. It is not warranted or guaranteed.

15-5 Chemical Composition

Element Percent By Weight
C Carbon 0.07 maximum
Cr Chromium 14 - 15.5
Cu Copper 2.5 - 4.5
Fe Iron Balance
Si Silicon 1.00 maximum
S Sulfur 0.03 maximum
Ni Nickel 3.5 - 5.5
Mn Manganese 1.0 maximum
P Phosphorus 0.04 maximum
Nb
Ta
Niobium
plus Tantalum
0.15 - 0.45 
 

 

Common Applications of 15-5 Stainless Steel

  • Aerospace applications
  • Fasteners
  • Oil & Gas applications
  • Valves, gears and pumps
  • Food processing

15-5 Physical Properties

Condition A H900 H 1075 H1150
Density g/cm (3) 7.75 7.81 7.83 7.86
Density lb/in (3) 0.280 0.282 0.283 0.284
Thermal Conductivity 70-212° 10.6 10.3    
Thermal Conductivity 70-932° 13.1 13.1    
Electrical Resistivity 98 77 80 86

 

15-5 Mechanical Properties

Condition Ultimate Tensile Strenght Yield Strength Elongation Reduction of Area Hardness Brinell Hardness Rockwell
H900 190,000 170,000 6 15 388 C40
H1025 155,000 125,000 8 27 331 C35
H1075 145,000 125,000 9 28 311 C32
H1150 135,000 105,000 11 30 277 C28
H1150-M 115,000 75,000 14 35 255  

 


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