Stainless steel 15 – 5 PH, also known as UNS S15500 or XM-12, is a modification of 17-4 PH developed in the 60′s. UNS S15500 stainless steel has a more refined microstructure as a result of the remelting process in which it was developed. This refined structure enhances toughness, especially in the transverse direction of the material. UNS S15500 also has excellent corrosion resistance, good fabricating characteristics and low temperature hardening which makes Stainless Steel 15 – 5 PH® the preferred alloy for many industries.
The composition of UNS S15500 includes small amounts of carbon, manganese, phosphorus, columbium (or niobium), tantalum, silicon and sulphur. 15500 can be forged, welded and formed. Machining may be performed in the solution-annealed state or in the final heat treat condition. Desired mechanical properties such as ductility and strength can be achieved through heating the material at various temperatures.
UNS S15500 is a martensitic precipitation hardening grade. Martensitic stainless steels were designed as a type of alloy which is corrosion resistant and could also be hardened through heat treatment.
Heat treatments are used to strengthen 15-5 alloys. There are eight standard conditions for 15-5 stainless steel after treatment - H 900, H 925, H 1025, H 1075, H 1100, H 1150 and H 1150-M. Heat treating 15-5 PH follows the following steps:
 15-5 PH can be further heat-treated when in precipitation-hardened condition to provide improved resistance to stress corrosion cracking for high temperature applications. Fabrication is recommended after the metal has been heat treated to minimize distortion and stress.
 
   Harsh steel also carries a number of other stainless steel alloys, including347 Stainless, A-286, 321 Stainless, 13-8 MO, AM 350, 17-4 PH Stainless,15-7 MO, 17-7 PH Stainless and 410 Stainless.
   
   
  Description: Valve related cnc products and vmc    components 
    Material:  Stainless steel 202, 304/304L, 316/316L, 304H,    316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205    and 2507. Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy    600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1,    Grade 2, Grade 5 and all other grades in Copper alloys. 
    Size: As per Diagram and requirement  
    Finish: As per requirement  
    Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding.  | 
  
   Description: Spool    CNC components  
    Material: Stainless steel  202, 304/304L, 316/316L, 304H, 316H, 309/S,    310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205 and 2507.    Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy 600, Alloy    625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1, Grade 2,    Grade 5 and all other grades in Copper alloys. 
    Size: As per Diagram and requirement  
    Finish: As per requirement  
    Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. | 
  Description: Medical    Implants, Bone screw, pedicle screws, pins, plates and other implants
    Material:  Stainless steel 202, 304/304L, 316/316L, 304H, 316H, 309/S,    310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205 and 2507.    Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy 600, Alloy    625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1, Grade 2,    Grade 5 and all other grades in Copper alloys. 
      Size:  As per client’s requirements  
      Finish:  As per clients requirements  
      Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. | 
  
  Description: Plugs and Exotic Fasteners with    unique designs and sizes 
    Material: Stainless steel 202, 304/304L, 316/316L, 304H,    316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205    and 2507. Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy    600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1,    Grade 2, Grade 5 and all other grades in Copper alloys. 
    Size: As per client’s requirements 
    Finish: As per clients requirements and all types of coating    available 
    Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. | 
  Description: Shaft and pins  
    Material: Stainless steel 202, 304/304L, 316/316L, 304H,    316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205    and 2507. Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy    600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1,    Grade 2, Grade 5 and all other grades in Copper alloys. 
    Size: As per client’s requirements  
    Finish: As per clients requirements  
    Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. | 
 
   Description:  Precision    CNC and VMC sheet metal components, Top Rollers, Spray nozzles,    Instrumentation fittings  as per    drawings 
    Material: Stainless steel 202, 304/304L, 316/316L, 304H,    316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205    and 2507. Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy    600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1,    Grade 2, Grade 5 and all other grades in Copper alloys. 
    Size: As per client’s requirements 
    Finish: As per clients requirements 
    Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. | 
   Description: Aerospace    parts such as adapters, flanges, knobs, couplings, fittings, ferrules,    brackets, clamps, connectors, hoses, Elbows, Tees, shafts, Nipples, Hex plugs    etc 
    Material: Stainless steel 202, 304/304L, 316/316L, 304H,    316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205    and 2507. Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy    600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1,    Grade 2, Grade 5 and all other grades in Copper alloys. 
    Size: As per client’s drawings and requirements 
    Finish: As per clients drawings and requirements 
    Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. | 
 
   
    Description: Industrial Precision CNC and VMC    components for motorsports, automotives, bicycle components, energy and    power, oil and gas equipments etc. 
      Material: Stainless steel 202, 304/304L, 316/316L, 304H,    316H, 309/S, 310/S, 317/L, 321/H, 347/H, 904L, 330, 254SMO, 410, Duplex 2205    and 2507. Nickel Alloy such as alloy 200/201, C276, C22, Alloy 400, Alloy    600, Alloy 625, Alloy 800H, Alloy 800HT, 254SMO, AL6XN and Titanium Grade 1,    Grade 2, Grade 5 and all other grades in Copper alloys. 
      Size: As per client’s drawings and requirements 
      Finish: As per clients drawings and requirements  
      Process: CNC swiss, CNC turning, VMC machining, Milling and    Grinding. |