Overview

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.

Limiting Chemical Composition, %

Nickel.......................................................................................................................................................................................Balance.

Carbon....................................................................................................................................................................................0.17 max.

Silicon.....................................................................................................................................................................................1.00 max.

Copper....................................................................................................................................................................................0.20 max.

Iron..........................................................................................................................................................................................1.00 max.

Manganese.............................................................................................................................................................................1.00 max.

Chromium...........................................................................................................................................................................14.00-15.70

Titanium..................................................................................................................................................................................0.90-1.50

Aluminum................................................................................................................................................................................4.50-4.90

Cobalt..................................................................................................................................................................................18.00-22.00

Molybdenum...........................................................................................................................................................................4.50-5.50

Lead....................................................................................................................................................................................0.0015 max.

Sulfur.......................................................................................................................................................................................0.01 max.

Boron.....................................................................................................................................................................................0.003-0.01

Ziconlum.................................................................................................................................................................................0.15 max.

Physical Constants

Below are some physical constants and thermal properties of

Mechanical properties

Heat treatment 4 h/1150°C/AC + 16 h/1050-1065°C/AC + 16 h/850°C/AC

Corrosion Resistance

NIMONIC Alloy 105 is a nickel-based superalloy with excellent corrosion resistance. It can maintain stable performance under high temperature and various harsh environmental conditions, and has good resistance to a variety of corrosive media.

The corrosion resistance of NIMONIC Alloy 105 is mainly due to the elements such as chromium, aluminum and titanium in its composition. These elements form a dense oxide film on the surface of the alloy, which can effectively prevent the intrusion of corrosive media such as oxygen, water vapor and acid. In addition, the precipitated carbide phase of NIMONIC Alloy 105 provides additional corrosion resistance.

NIMONIC Alloy 105 resists oxidation, vulcanization and chlorination in high temperature environments. It has strong corrosion resistance to strong acids such as sulfuric acid, hydrochloric acid and hydrofluoric acid, but also can maintain stable performance in high temperature environment containing hydrogen sulfide.

In addition, NIMONIC Alloy 105 has excellent resistance to stress corrosion cracking and pitting. This makes it widely used in the high-temperature and high-pressure petroleum and chemical fields, such as the manufacture of oil and gas pipelines, reactors, valves and heat exchangers.

Heat Treatment

NIMONIC Alloy 105 is a nickel-based superalloy whose heat treatment mainly includes solution treatment, intermediate aging and pre-aging.

First, the solution treatment is to heat the alloy to a temperature close to its melting point, so that the alloying elements are fully dissolved in the matrix, forming a single-phase solid solution. This step helps to eliminate the stress inside the alloy, improving plasticity and toughness. The time, temperature and cooling rate of solution treatment have important effects on the performance of NIMONIC Alloy 105.

Secondly, the intermediate aging treatment is carried out at a dissolution temperature higher than γ' phase and lower than the dissolution temperature of the carbide, so that the fine carbide precipitates at the grain boundary, nails the grain boundary, plays a role in stabilizing the grain boundary, and improves the lasting strength of the alloy.

Finally, the pre-aging treatment can precipitate a certain amount of fine Y phase in the matrix, and further improve the strength of the alloy.

For hot-rolled rods, flat materials and forgings for blades, solid solution treatment of 1150℃±10℃×4h is usually used, and then intermediate aging treatment of 1030℃±10℃×16h is carried out, and finally pre-aging treatment of 700℃±5℃×16h is carried out. For cold drawn rods, solution treatment at 1125℃±10℃ was adopted, and then intermediate aging treatment at 850℃±10℃×16h was carried out. The solution holding time depends on the size of the part: 1h when d≤3mm; 2h for d>3mm and d≤6mm; 4 hours for d>6mm and d≤40mm.

Forms



We provide you with a variety of product forms, including but not limited to

• Bar/Rod

• Pipe/Tube

• Coil/Strip

• Plate/Sheet/Circle

• Wire

• Fitting (Flange, Elbow, Tee...)

• Customize