Technical Data Sheet
Alloy PK33 is a nickel- chromium – cobalt precipitation hardenable alloy but the addition of Molybdenum makes Alloy PK33 solid-solution strengthened. PK33 is commonly used in gas turbines as flame tubes because of its high temperature strength, creep resistance and welded sheet structures.
| Chemical Composition Limits | |||||||
| Weight% | Ni | Cr | Mo | Fe | Al | Ti | C |
| PK33 | Bal | 16-20 | 5-9 | 1.0 max | 1.7-2.5 | 1.5-3.0 | 0.07 max |
| Weight% | Cu | Si | Mn | Co | B | Zr | S |
| PK33 | 0.2 max | 0.5 max | 0.5 max | 12.0-16.0 | 0.005 max | 0.06 max | 0.015 max |
Typical 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 |
Availability
PK33 is available in Sheet, Plate, Round Bar, Flat Bar, Forging Stock, Extruded Section and Welding Wire. For all stock availability contact Sales.
Specifications
DTD5057
AFNOR NC 19 KDu/v
NIMONIC PK33