Nimonic Alloy 75 (UNS N06075) is a nickel-chromium alloy with good mechanical properties and oxidation resistance at high temperatures. Alloy 75 is most commonly used for sheet metal fabrications which require oxidation and scaling resistance together with medium strength at high operating temperatures.  Alloy 75 is also used in gas turbine engines, for components of industrial furnaces, for heat treating equipment and fixtures, and in nuclear engineering.


Chemical Composition Limits

Weight %NiCrTiCSiCuFeMn
Alloy 75Bal18.9 - 21.00.2 / 0.60.08 / 0.151.0 max0.5 max5.0 max1.0 max


Alloy 75 is available in Bar, Plate, Strip, Sheet, Wire, Tube, Rod, Forging Stock and Extruded Section.


Rod, Bar, Wire and Forging StockBS HR 5, BS HR 504, DIN 17752, AECMA PrEN2306, AECMA PrEN2307, AECMA PrEN2306, AECMA Pr EN2307, AECMA PrEN2402, ISO 9723, ISO 9724, ISO 9725
Plate, Sheet, StripBS HR 203, DIN 17750, AECMA PrEN2293, AECMA PrEN2302, AECMA PrEN2411, ISO 6208
Pipe and TubeBS HR 403, DIN 17751, AECMA PrEN2294, ISO 6207
OtherDIN 17742, AECMA PrEN2308, Werkstoff Nr 2.4630, W. Nr 2.4951, UNS N06075, Nimonic 75 (tradename), MSRR 7104 and MSRR 7004, AFNOR NC 20T

Typical Mechanical Properties Alloy 75

Rupture Strength (1000 h)
760°C / 1400° F600040
815°C / 1500°F350024
870°C / 1600°F220015
925°C / 1700°F150010
980°C / 1800°F12008