Alloy PK33
Description
Alloy PK33 is a nickel-chromium-cobalt precipitation hardenable alloy with solid-solution strengthened by the addition of molybdenum. And the addition of molybdenum makes the alloy with an exceptional combination of high temperature strength, creep-resistant and ductility. In addition, Alloy PK33 is extremely resistant to thermal shock and thermal fatigue and offers superb weldability, which is very attractive for combustion chambers, jet pipes and reheat systems of high performance gas turbine engines.
Chemical Component
| Ni | Cr | Co | Mo | Cu | Ti | Al | Fe | C | Mn | Zr | Si | S |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 54% max | 16-20% | 12-16% | 5-6% | 0.20% max | 1.50-3% | 1.70-2.50% | 1% max | 0.070% max | 0.50% max | 0.060% max | 0.50% max | 0.0050% max |
Basic Information
| Items | Alloy PK33 |
|---|---|
| Catalog | ACMA-Ni-A027 |
| Density | 8.21 g/cm3 |
| Specific Heat Capacity | 419 J/kg.°C |
| Electrical Resistivity | 1.26 µΩ.m |
| Melting Range | 1300-1345 °C |
Material Forms
Alfa Chemistry offers alloy PK33 in the forms of Round Bar, Plate & Sheet, etc.
Mechanical & Physical Properties
| Properties | 21.1 °C | 93.3 °C | 148.9 °C | 204.4 °C | 315.6 °C | 371.1 °C | 426.7 °C | 537.8 °C | 648.9 °C | 750 °C | 815 °C | 850 °C | 900 °C |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ultimate Tensile Strength, MPa | 1127 | 1112 | 1112 | 1096 | 1065 | 1019 | 1019 | 973 | 957 | - | - | - | - |
| 0.2% Yield Strength, MPa | 664 | 648 | 648 | 618 | 602 | 587 | 587 | 587 | 571 | - | - | - | - |
| Reduction of Area, % | 41 | 39 | 39 | 39 | 40 | 42 | 42 | 41 | 40 | - | - | - | - |
| Elongation, % | 33 | 33 | 33 | 35 | 38 | 40 | 40 | 37 | 31 | - | - | - | - |
| Charpy Impact V-notch, J | - | - | - | - | - | - | - | - | - | ||||
| Minimum Creep 0.0001% per hr | - | - | - | - | - | - | - | - | - | 286 | 170 | 90 | 46 |
| 10,000 hr Rupture Strength | - | - | - | - | - | - | - | - | - | 332 | 208 | 120 | 77 |
| Coefficient of Thermal Expansion, µm/m°C | - | 10.6 | - | 11.7 | 12.2 | 12.7 | - | 13.2 | 13.4 | - | - | - | - |
| Thermal Conductivity, kcal/(hr.m.°C) | 9.718 | 10.836 | - | 11.868 | 13.33 | 14.792 | - | 15.824 | 17.826 | - | - | - | - |
| Modulus of Elasticity, GPa | 217 | 214 | - | 209 | 203 | 197 | - | 190 | 183 | - | - | - | - |
Specifications
Round Bar, Plate & Sheet: MSRR 7166, 7195
Applications
Alloy PK33 can be used in a variety of applications, including:
- Gas turbine welded structures
- Gas turbine hot sections
- Flame tubes
- Enclosures for industrial furnace hot sections
- Combustion chambers
* Technical data included herein should be used as a guideline only, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice.
You Want It? We Got It!
Alfa Chemistry is a manufacturer of standard & custom specialty metals & alloys. We stock a wide variety of alloys in different shapes and specifications. If you can't find the product or specification you need, please contact us directly.
Contact Us