Content
Chemical composition of GH4145(%)
| Element | Minimum(%) | Maximum(%) |
|---|---|---|
| C | - | 0.08 |
| Cr | 14 | 17 |
| Ni+Co | 70 | - |
| Al | 0.4 | 1 |
| Ti | 2.25 | 2.75 |
| Fe | 5 | 9 |
| Nb+Ta | 0.7 | 1.2 |
| Co | - | 1 |
| Mn | - | 1 |
| Si | - | 0.5 |
| S | - | 0.01 |
| Cu | - | 0.5 |
| P | - | 0.015 |
Physical properties of GH4145
| Property | Value |
|---|---|
| Density | 8.28 g/cm³ |
| Melting range | 1397-1427 ℃ |
Mechanical properties of GH4145 alloy
| Property | Value |
|---|---|
| Tensile Strength | ≥965 MPa |
| Yield Strength | ≥550 MPa |
| Elongation | 20%-30% |
| Reduction of Area | ≥30% |
| Hardness (HB) | 330-370 |
| Creep Rupture Strength (650°C, 1000h) | 700 MPa |
| Fatigue Strength | 620 MPa (10⁷ cycles, R = -1) |
Applications of GH4145
- Springs and bolts working at high temperatures; rotor blades, impellers and other structural parts on gas turbines；
- Thrust chambers on rocket engines;
- Reverse thrust devices on aircraft;
- Large high-pressure vessels;
- Elastic gas seals, elastic sealing molds, rubber mechanical electric heating blades.
