Jul 4 2013
Topics Covered
Introduction
Chemical Composition
Physical Properties
Mechanical Properties
Other Designations
Fabrication
Machinability
Welding
Forging
Cold working
Annealing
Applications
Introduction
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.
This datasheet will look into the chemical composition, properties and applications of UDIMET alloy R41.
Chemical Composition
The chemical composition of UDIMET alloy R41 is given in the following table.
|
Element |
Content (%) |
|
Nickel, Ni |
47.27-58.59 |
|
Chromium, Cr |
18-20 |
|
Cobalt, Co |
10-12 |
|
Molybdenum, Mo |
9-10.5 |
|
Iron, Fe |
≤5 |
|
Titanium, Ti |
3-3.3 |
|
Aluminum, Al |
1.4-1.8 |
|
Others |
remainder |
Physical Properties
The following table discusses the physical properties of UDIMET alloy R41.
|
Properties |
Metric |
Imperial |
|
Density |
8.25 gm/cm3 |
0.298 lb/in3 |
Mechanical Properties
The mechanical properties of UDIMET alloy R41 are tabulated below.
|
Properties |
Metric |
Imperial |
|
Poissons Ratio |
0.31 |
0.31 |
Other Designations
Some of the other designations that are used to denote UDIMET alloy R41 are tabulated below:
|
AISI 683 |
AMS 5545 |
AMS 5712 |
AMS 5713 |
AMS 5800 |
|
DIN 2.4973 |
GE B50T44 |
GE B50T59 |
GE B50T94 |
GE B50TF109 |
|
GE B50TF11 |
GE B50TF110 |
GE B50TF210 |
GE B50TF59 |
GE B50TF75 |
GE B50TF76
|
UNS N07041
|
|
|
|
Fabrication
Machinability
Conventional machining techniques can be used on this alloy. This alloy work-hardens while machining.
Welding
UDIMET alloy R41 can be welded using common techniques, using a matching filler metal.
Forging
Forging can be carried out on the alloy at solution annealed condition.
Cold working
Cold working may be done on the alloy using standard tooling; use of soft die materials gives a better finish and minimizes galling.
Annealing
UDIMET alloy R41 is solution annealed at 1065°-1079°C (1950°F-1975°F) followed by air cooling.
Applications
The UDIMET alloy R41 is used in the following applications:-
-
Gas turbine parts
-
Aircraft parts
-
Land and marine applications
-
High temperature applications
-
Structural hardware.