Nimonic 115 Alloy Sheet

Nimonic 115 alloy sheet is a nickel-chromium-cobalt-molybdenum alloy that can be precipitation-hardened. Alloy 115 is a creep-resistant alloy developed for high-temperature service up to 1010°C. Suitable for oxidation resistance and high-temperature strength.

It was designed to be placed in the hottest parts of a turbine, bearing the highest stress. Customers who inquire about this material are almost exclusively using it for high-temperature load-bearing components in aircraft engines and gas turbines. This confirms its suitability for long-term service under extreme conditions.

In addition, regarding the heat treatment process, Alloy 115 is solution annealed at 1190°C (2175°F) for 1 1/2 1 hour, air-cooled to 1099°C (2010°F), held at 1099°C (2010°F) for 6 hours, and then air-cooled again. Due to the slightly complex process, the processing cost is higher than that of general high-temperature alloys.

Typically, the Nimonic 115 alloy sheets we supply conform to the standard AMS 5829 (commonly used for aerospace thin sheets). Alternatively, DIN 2.4636 or DIN 17752 is also available.

Our sheet thickness specifications: Thin sheets typically range from 0.5mm to 6mm, while medium-thick sheets are 6mm and above. We offer two types of sheets: cold-rolled (smooth surface, tight thickness tolerances) and hot-rolled (may have oxide scale on the surface).

Our surface finish options: 115 alloy for aerospace applications typically requires annealing, pickling, grinding, or polishing. For blade applications, the surface must be free of microcracks, and it needs to be determined whether surface penetrant testing is required.

An alloy filler for welding is required - this can either be an exact alloy match or a filler with high nickel, cobalt, molybdenum, and chromium content. Suitable welding techniques include gas metal-arc welding, gas-tungsten arc welding, submerged-arc welding, and shielded metal-arc welding.

Nimonic 115 is solution annealed at 1190°C (2175°F) followed by rapid cooling.

Standard tooling methods are used for cold working Nimonic 115. Usage of plain carbon steels is not recommended, as they may produce galling. Galling can be reduced by the use of soft die materials and heavy-duty lubricants.

Welding techniques recommended for Nimonic 115 include gas-tungsten arc welding, gas metal-arc welding, submerged-arc welding, and shielded metal-arc welding. Usage of a matching alloy filler metal is recommended for the welding process, and an alloy rich in Ni, Co, Cr, and Mo can be used in the absence of a matching filler metal.

Conventional methods and heavy-duty lubricants are used for the forming process of Nimonic 115, as it has good ductility. Powerful equipment is recommended for this alloy as it is stronger than the commonly available steels. After the forming process, all traces of lubricant should be cleaned to prevent embrittlement of the alloy.

Nimonic 115 is machined by conventional machining methods. This alloy has higher levels of gumminess and strength and is work-hardened during the machining process. Tooling and usage of a heavy duty machining equipment during the machining process enable minimizing work-hardening or chatter of this alloy before the cutting process. Heavy lubricants are suitable for boring, tapping, drilling, or broaching. Water-based coolants that are water-based are recommended for high- speed operations, such as milling, grinding, or turning.

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