Fermonic® 60 is a fully austenitic alloy supplied in the hot worked and annealed condition (it is also known as Nitronic® 60 – a trademark owned by AK Steel Corporation). The general corrosion resistance is between that of Alloy 304 and Alloy 316 stainless steel, whereby is it generally better than Alloy 304 in most environments but superior to Alloy 316 with respect to chloride pitting resistance. More significantly, additions of Silicon and Manganese provide superior wear, galling and fretting resistance than many other corrosion resistant alloys making it preferable for applications where there is repeated movement/sliding or frequent assembly/disassembly.
These compositional additions also provide almost double the yield strength of Alloys 304/316, and higher strength can be achieved through cold working. Importantly, it remains fully austenitic – and therefore, fully non-magnetic – even after severe cold-working, although there is no improvement in galling performance from this operation.
Specifications
ASTM A479/A276
UNS S21800
Nit60
Notes:
Tensile testing shall be carried out in accordance with ASTM A370 or EN10002-1
Key Features:
Superior resistance to galling and associated wear mechanisms
Retention of mechanical properties up to 1200°C combined with good oxidation resistance
Cost effective alternative to Cobalt- and Nickel-based alloys in wear/galling critical applications
Readily strengthened by cold-working
Non-magnetic
Readily fabricated and welded in the same way as Alloy 304/316
Applications:
Fasteners
Pins and bushings
Wear rails and guides
Roller bearings
Marine shafts
Pump components such as seals and wear rings
Valve stems, seats and trim