A-ONE ALLOY is among the several suppliers who can produce Nimonic 105 alloy with sound quality. And the price is reasonable. No wonder that our delivery is only one to one and a half months. It is normal for us as we are facilitied with all the devices and machine from melting process through forging and until the turning process to deliver our customer with bright finish round bars.
NIMONIC® alloy 105 (W. Nr. 2.4634) is a wrought nickel-cobalt-chromium-base alloy strengthened by
additions of molybdenum, aluminum and titanium. It has been developed for service up to 950°C, and combines the high strength of the age-hardening nickel-base alloys with good creep resistance.
NIMONIC alloy 105 is produced by high frequency melting in air followed by casting in air, or, for more
critical applications the alloy is produced by vacuum melting and electroslag refining.
The alloy is used for turbine blades, discs, forgings, ring sections, bolts and fasteners.
Chemical composition
| Element | C | Si | Cu | Fe | Mn | Cr | Ti | Al | Co | Mo | Pb | S | B | Zr | Ni |
| Weight(%) | 0.17 max | 1.0 max | 0.2 max | 1.0 max | 1.0 max | 14.0-15.7 | 0.9-1.5 | 4.5-4.9 | 18.0-22.0 | 4.5-5.5 | 0.0015 max | 0.010 max | 0.003-0.010 | 0.15 max | Balance |
Heat treatment
The heat treatment recommended is dependent on the intended service condition.
Two heat treatments are recommended as follows:
(a) 4 h/1150°C/AC+16 h/1050-1065°C/AC+16 h/850°C/AC
(b) 4 h/1125°C/AC+16 h/850°/AC
Fabrication
Hot working
NIMONIC alloy 105 may be hot worked in the temperature range 1050-1200°C.
Annealing
Interstage annealing of NIMONIC alloy 105 should be carried out at 1150°C followed by air cooling of fluidized bed quenching. Water quenching is not recommended as severe surface cracking may result from thermal shock.
Machining
NIMONIC alloy 105 should be in the fully heat-treated condition for all machining operations. The high hardness range, 320-385 HV, necessitates the use of tungsten carbide tipped tools. High speed steel shock-proof tools can be used if the cut is of an intermittent nature.
Welding
Fusion welding of NIMONIC alloy 105 using conventional processes such as T.I.G. or M.I.G. welding is not recommended as microfissuring can occur both in the weld and heat affected zones. Electron beam welding has been used successfully but the danger of microfissuring still exists and welding trials should always be carried out before the process is specified.
Similar difficulties can be expected with resistance spot, stitch or seam welding. Flash-butt welding is, however, quite satisfactory and in regular use for the production of turbine rings.
NIMONIC is a trademark of the Special Metals Corporation group of companies.
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