Nimonic PK33
Description:
Alloy PK33 is a superalloy which is highly resistant to thermal shock and thermal fatigue. It also offers superb weldability, meaning it is often used to combustion chambers, jet pipes and reheat systems for high performance gas turbine engines.
Alloy PK33 sheet fabrications are normally out into service after completion of the two-stage heat treatment process. This heat treatment is usually carried out in air.
Alloy PK33 is often used in high strength applications at elevated temperatures, such as in gas turbine hot sections or enclosures for industrial furnace hot sections.
Chemical Composition:
|
Element |
Content (%) |
|
Nickel, Ni |
54 |
|
Chromium, Cr |
16.0-20.0 |
|
Cobalt, Co |
12.0-16.0 |
|
Molybdenum, Mo |
5.0-9.0 |
|
Aluminum, Al |
1.70-2.50 |
|
Titanium, Ti |
1.50-3.0 |
|
Iron, Fe |
1.0 |
|
Silicon, Si |
0.50 |
|
Manganese, Mn |
0.50 |
|
Copper, Cu |
0.20 |
|
Carbon, C |
0.070 |
|
Zirconium, Zr |
0.060 |
|
Sulfur, S |
0.015 |
|
Boron, B |
0.0050 |
Mechanical Properties:
|
Material |
Condition 20°C |
0.1 % Proof Stress MPa |
Tensile Strength MPa |
Elongation % |
Reduction of Area % |
|
PK33 Bar |
Heat Treatment 2h/1100°C/AC +4h 850°C/AC |
664 |
1127 |
33 |
41 |
Applications:
l Gas turbine welded structures
l Gas turbine hot sections
l Flame tubes
l Enclosures for industrial furnace hot sections
l Combustion chambers
Specifications:
l DTD5057
l AFNOR NC 19 KDu/v
l NIMONIC PK33