UDIMET® alloy R41


Alloy R41

UDIMET® alloy R41 (UNS N07041) is a precipitation- hardenable nickel-chromium alloy containing significant amounts of cobalt and molybdenum, along with lesser amounts of aluminum and titanium. Alloy R41 exhibits extremely high room and elevated temperature mechanical properties. Excellent corrosion resistance and fabricability have led to wide usage in critical aircraft engine components such as nozzle partitions, turbine blades and wheels, combustion chamber liners and structural hardware.

The UDIMET alloy series are super alloys that have nickel or iron or cobalt as their base metal. Super alloys are known for their high-performance at extremely high temperatures or under high mechanical stress. Super alloys are subjected to special hardening techniques in order to achieve high performance at extreme conditions. Some of the commercially available UDIMET alloys are UDIMET alloys 188, 250, 520, 720, R41, L-605.

UDIMET alloy R41 is a super alloy with nickel as its base metal. This alloy is hardened by precipitation. Along with nickel, other metals like cobalt, chromium, aluminum, molybdenum are added to this alloy. The temperature-mechanical properties of this alloy are very high. It is also corrosion resistant and easily fabricated.

Chemical Composition:

The chemical composition of UDIMET alloy R41 is given in the following table.

ElementContent (%)
Nickel, Ni47.27-58.59
Chromium, Cr18-20
Cobalt, Co10-12
Molybdenum, Mo9-10.5
Iron, Fe≤5
Titanium, Ti3-3.3
Aluminum, Al1.4-1.8

Physical Properties:

The following table discusses the physical properties of UDIMET alloy R41.

Density8.25 gm/cm30.298 lb/in3

Mechanical Properties:

The mechanical properties of UDIMET alloy R41 are tabulated below.

Poissons Ratio0.310.31

Other Designations:

Some of the other designations that are used to denote UDIMET alloy R41 are tabulated below:

AISI 683AMS 5545AMS 5712AMS 5713AMS 5800
DIN 2.4973GE B50T44GE B50T59GE B50T94GE B50TF109
GE B50TF11GE B50TF110GE B50TF210GE B50TF59GE B50TF75
GE B50TF76UNS N07041