GH3039 (GH39) Nickel-Based AlloyGH3039 (also designated GH39) is a Chinese single-phase austenitic solid-solution strengthened nickel-based alloy. Strengthened by molybdenum and niobium, it offer
GH3039 (also designated GH39) is a Chinese single-phase austenitic solid-solution strengthened nickel-based alloy. Strengthened by molybdenum and niobium, it offers moderate thermal strength, good thermal-fatigue resistance and excellent weldability at service temperatures up to about 850 °C, and is a long-proven material for aero-engine combustor and afterburner components.
| Element | Cr | Ni | Mo | Nb | Al | Ti | Fe | Si | Mn | C | P | S | Cu |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Content | 19.0–22.0 | Bal. | 1.80–2.30 | 0.90–1.30 | 0.35–0.75 | 0.35–0.75 | ≤ 3.00 | ≤ 0.80 | ≤ 0.40 | ≤ 0.08 | ≤ 0.02 | ≤ 0.012 | ≤ 0.20 |
Cerium (Ce) is permitted in the alloy.
| Property | Typical Value |
|---|---|
| Density | 8.3 g/cm³ |
| Electrical resistivity | 1.18 ×10-6 Ω·m (room temperature) |
| Thermal conductivity | 13.8 W/(m·°C) at 100 °C; 26.8 W/(m·°C) at 900 °C |
| Specific heat capacity | 544 J/(kg·K) at 150 °C; 1047 J/(kg·K) at 800 °C |
| Coefficient of thermal expansion | 11.5 ×10-6 /°C (20–100 °C); 16.4 ×10-6 /°C (20–1000 °C) |
| Magnetic properties | Non-magnetic |
| Property | Typical Value |
|---|---|
| Yield strength | ≥ 481 MPa |
| Tensile strength | ≥ 745 MPa |
| Elongation after fracture | ≥ 13 % |
| Reduction of area | ≥ 42 % |
Moderate thermal strength and good thermal-fatigue resistance below 800 °C. Actual values may vary with condition and governing standard.
For detailed datasheets, mill certificates or inquiries on specific sizes and tolerances, please contact our sales & engineering team.
