Heat-Treatment
For bar 30-60 minutes at 1050°C (1920°F) followed by air cooling.
For sheet 5-10 minutes at 1050°C (1920°F) followed by air cooling or, before welding, 5-10 min/1050°C (1920°F)/AC + an optional 10 min/1050°C (1920°F)/AC.
Hot Working
NIMONIC alloy 75 can be hot worked in the range 1220- 950°C (2230-1740°F).
Cold Working
The good ductility and malleability of annealed NIMONIC alloy 75 make it amenable to many methods of cold deformation. The alloy is subject to rapid strain hardening. Because of this increased strength, large reductions can be made without rupture.
Available Products and Specifications
NIMONIC alloy 75 is designated as UNS N06075 and Werkstoff Numbers 2.4951 and 2.4630. Other designations include AFNOR NC20T, AICMA Ni-P91HT and DIN NiCr20Ti. Alloy 75 is available as sheet, strip, plate, round bar, forging stock, wire, tube and extruded section.
Rod, Bar, Wire and Forging Stock – BS HR 5, BS HR 504, DIN 17752, AECMA PrEN2306, AECMA PrEN2307, AECMA PrEN2402, ISO 9723-25
Plate, Sheet and Strip – BS HR 203, DIN 17750, AECMA PrEN2293, AECMA PrEN2302, AECMA PrEN2411, ISO 6208
Pipe and Tube – BS HR 403, DIN 17751, AECMA PrEN2294, ISO 6207
Other Product Forms – DIN 17742, AECMA PrEN2308
