Description (English)
Shanghai Vertex Alloy Co., Ltd (Vertex Alloy) supplies Nimonic PK33 plate, the vacuum-processed nickel-chromium-cobalt-molybdenum precipitation-hardenable superalloy from the Special Metals Nimonic family, to D.T.D. 5057 / MSRR 7166-7195 (AFNOR NC 19 KDu; no direct UNS, ASTM or Chinese GB equivalent). γ′ (Ni₃(Al,Ti)) precipitation hardening plus 5–9% molybdenum solid-solution strengthening give PK33 an exceptional combination of high-temperature strength, creep resistance and ductility: solution-treated and aged tensile strength ~1127 MPa with 0.2% yield ~664 MPa at room temperature, and 10,000-hour rupture strength ~208 MPa at 815°C. Developed as a sheet material to replace Nimonic 80A and 90, PK33 offers outstanding weldability and extreme resistance to thermal shock and thermal fatigue — the first choice for combustion chamber liners, flame tubes, jet pipes and reheat systems in high-performance gas turbine engines. Plate 5–60 mm thick supplied solution treated or fully two-stage heat treated with EN 10204 3.1 certificates; sheet, strip, bar, forging stock and welding wire also available. Contact us for the latest stock and pricing.
Size Range
- 5–60 mm THK
Grade Specification
| System | Value |
|---|---|
| NIMONIC alloy PK33 (Special Metals / Wiggin) | - |
| D.T.D. 5057 | - |
| MSRR 7166 / MSRR 7195 | - |
| NC 19 KDu | - |
Chemical Composition
| Element | Value |
|---|---|
| Ni | Balance (max ~54) |
| Cr | 16.0–20.0 |
| Co | 12.0–16.0 |
| Mo | 5.0–9.0 |
| Ti | 1.5–3.0 |
| Al | 1.7–2.5 |
| Fe | ≤ 1.0 |
| Si | ≤ 0.50 |
| Mn | ≤ 0.50 |
| Cu | ≤ 0.20 |
| C | ≤ 0.07 |
| Zr | ≤ 0.06 |
| B | ≤ 0.005 |
| S | ≤ 0.015 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength (20°C) | ~1127 MPa |
| 0.2% Yield Strength (20°C) | ~664 MPa |
| Elongation | ~33% |
| Reduction of Area | ~41% |
Physical Properties
| Property | Unit | Value |
|---|---|---|
| Density | - | 8.21 g/cm³ |
| Melting Range | - | 1300–1345°C |
| Specific Heat | - | 419 J/kg·K |
| Thermal Conductivity | - | ~11.3 W/m·K (20°C) |
| CTE (20–500°C) | - | 13.1 × 10⁻⁶ /K |
| Elastic Modulus | - | 217 GPa (20°C) |
| Electrical Resistivity | - | 1.26 μΩ·m |
| Heat Treatment | - | Solution 1100–1120°C + Aging 4 h/850°C |
Applications
- Industry Typical Parts Aero Gas Turbines
- Gas Turbine Repair & Overhaul
- Industrial Gas Turbines
- Industrial Furnaces
- Petrochemical / Processing
- Rocket engine components, high-temperature seals and gaskets