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Material Specification

Nitronic 60

Nitronic 60 Fasteners
Anti-Galling & Wear-Resistant Austenitic Stainless Steel (Alloy 218)

Austenitic Stainless Steel Nitronic 60 Fasteners

Buy Nitronic® 60 (Alloy 218) anti-galling bolts and nuts engineered with 8% Mn and 4% Si to eliminate thread galling and seizure under load.

Exotic Alloy fasteners offer Nitronic 60 bolts, nuts, and studs with standard and custom manufacturing to your exact project specifications. We cover Nitronic 60 hex bolts, heavy hex bolts, studs, stud bolts, hex nuts, washers, threaded rod, and custom drawing fasteners in metric (M3 to M120) and inch sizes (1/4" to 5") with coarse, fine, and extra-fine threads to ASME, ISO, and DIN standards.

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Nitronic 60 Bolting Products

Nitronic 60 Specifications & Standards

  • ASTM A193 / A194
  • ASTM A276 / A479
  • UNS S21800
  • ASTM F593 / F594
  • ASTM A193 B8S / ASTM A276 / AMS 5848
  • ISO 3506-1 / 3506-2
  • BS 970 / BS EN 10088
  • JIS G4303
Nitronic 60 Material Datasheet

Nitronic 60 Properties

Chemical Composition (Nitronic 60)
Elements C Mn P S Si Cr Ni N Fe
Min % - 7.00 - - 3.50 16.00 8.00 0.08 Balance
Max % 0.10 9.00 0.040 0.030 4.50 18.00 9.00 0.18 Balance
Mechanical Properties (Nitronic 60)
Condition / Heat Treatment Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness
Annealed 795 415 35 % 205 HB / 95 HRB
High Strength (Cold Worked) 965 725 20 % 290 HB / 30 HRC
Hot Rolled 825 480 30 % 220 HB / 97 HRB

Nitronic 60 Characteristics

  • Outstanding resistance to galling, metal-on-metal wear, and fretting under high clamping loads
  • Double the yield strength of standard AISI 316/316L stainless steels in annealed condition
  • Exceptional pitting and crevice corrosion resistance in marine and acidic environments
  • Non-magnetic permeability maintained even after severe cold working and cryogenic exposure
  • Eliminates the requirement for anti-seize lubricants on high-cycle threaded connections

Nitronic 60 Applications

  • High-integrity subsea bolting, valve stems, pump shafts, and marine fasteners
  • Nuclear reactor control rod bolting, fuel handling hardware, and primary coolant pumps
  • Chemical process valve trim, sanitary metering screws, and industrial fluid meters
  • Aerospace actuator fasteners, tie rods, landing gear pins, and flight control joints
  • Offshore oil & gas wellhead bolting, blowout preventer studs, and marine couplings