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Alloy A-286

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Super Alloy A-286 Related Metals:
  • Pyrotool Alloy A(tm)
  • Udimet A-286(tm)
  • Pyromet Alloy A-286(tm)
  • Nickelvac A-286(tm)
  • JBK 75(tm)
  • Altemp 286(tm)
  • Pyromet A-286(tm)
Specifications:
  • AISI 660)
  • AISI 662
  • AMS 5525
  • AMS 5726
  • AMS 5731
  • AMS 5732
  • AMS 5734
  • AMS 5737
  • AMS 5804
  • AMS 5805
  • AMS 5853
  • AMS 5858
  • AMS 5895
  • AMS 5895
  • ASTM A453 Grade 660
  • ASTM A638 Grade 660
  • DIN 1.4943
  • DIN 1.4944
  • GE B50T1181
  • SPS M250
  • UNS S66286

Chemistry Data
  • Aluminum : 0.1 - 0.3
  • Boron : 0.02 max
  • Carbon : 0.08 max
  • Chromium : 14 - 16
  • Iron : Balance
  • Manganese : 1 - 1.5
  • Molybdenum : 1 - 1.6
  • Nickel : 24.5 - 27
  • Titanium : 1.5 - 2.5
General Information principal Design Features An iron based high temperature, high strength alloy.
Applications Used for reasonably low cost when moderate strength and oxidation resistance are required at temperatures greater than suitable for stainless steels. This alloy finds application in gas turbine forgings. It is suited for use up to a temperature of about
Machinability Readily machined by standard methods. Similar in behavior to the machining of the austenitic (300 series) stainless steels. Cemented carbide tools are best for high cutting rates as in turning operations. Turning: Surface speed of 300-325 fpm using ca
Forming This alloy can be readily cold or hot formed using conventional procedures. Generally minimum diameter for bending is 1 times the thickness of the sheet or strip and 2 times thickness for plate. Forming behavior is similar to that for Type 310 stainless
Corrosion Resistance A-286 alloy is suitable for use in moderately corrosive aqueous media. Generally the A-286 alloy is similar to the 300 series stainless steels in regard to corrosion resistance. It is subject to crevice corrosion and to chloride stress corrosion crackin
Welding As with all nickel containing alloy cleanliness of the area to be welded is of paramount importance. Welding procedures and processes are the same as used for stainless steel. Preheating or post welding heat treatment is not required. Welds should alwa
Heat Treatment The alloy is solution annealed at 1800 F and oil quenched, followed by holding at 1325 F for 16 hours and air cool. This treatment develops high strength for the alloy.
Forging Light forging can be done in the temperature range of 1600-1850 F. Heavy forging is done at temperatures in the range of 1850-2200F.
Hot Working See "Forging"
Cold Working This alloy is readily cold worked in a manner similar to that of the austenitic (300 series) stainless steels. Severe cold forming will result in work hardening which will necessitate a solution anneal heat treatment to soften the alloy. Annealing
See "Heat Treatment".
Aging Aging of this alloy for high strength can be accomplished at 1325 F for 16 hours followed by an air cool. Aging is done after first giving the alloy a solution heat treatment at 1800 F.
Hardening As with austenitic stainless steels hardening of this alloy is accomplished by cold working. However the alloy, as is common with many of the iron-nickel alloys containing titanium, may be age hardened. Refer to "Aging" listing.
Physical Data
  • Density (lb / cu. in.) : 0.286
  • Specific Gravity : 7.9
  • Specific Heat (Btu/lb/Deg F - [32-212 Deg F]) : 0.1
  • Electrical Resistivity (microhm-cm (at 68 Deg F)) : 480
  • Melting Point (Deg F) : 2550
  • Poissons Ratio : 0.3
  • Mean Coeff Thermal Expansion : 9.17
  • Magnetic Permeability : 1.01
  • Modulus of Elasticity Tension : 29.1

Mechanical Data
MSO currently has no data available for this grade.


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