19-9 DL
Material Data Sheet
19-9 DL exhibits high strength and resistance to corrosion and oxidation at temperatures up to 1250°F (677°C).
Like all austenitic alloys of this type, 19-9 DL cannot be strengthened by thermal treatment and is frequently used in the annealed condition.
When higher properties are required they can be achieved by hot-cold working; that is, by starting the rolling or forging at 2000/2100°F (1093/1149°C) and finish working at 1200/1600°F (649/871°C).
Chemical Composition
| Element | Content (%) |
|---|---|
| Iron, Fe | 64.0 |
| Chromium, Cr | 18.0 – 21.0 |
| Nickel, Ni | 8.0 – 11.0 |
| Molybdenum, Mo | 1.0 – 1.75 |
| Tungsten, W | 1.0 – 1.75 |
| Manganese, Mn | 0.75 – 1.5 |
| Copper, Cu | ≤ 0.5 |
| Silicon, Si | 0.3 – 0.8 |
| Carbon, C | 0.28 – 0.35 |
| Niobium, Nb (Columbium, Cb) | 0.25 – 0.6 |
| Titanium, Ti | 0.1 – 1.75 |
| Phosphorus, P | ≤ 0.04 |
| Sulfur, S | ≤ 0.03 |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 7.62 g/cc | 0.275 lb/in³ |
Mechanical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Tensile Strength, Ultimate | 838 MPa | 122000 psi |
| Tensile Strength, Yield | 579 MPa | 84000 psi |
| Elongation at Break | 43% | 43% |
| Reduction of Area | 55.5% | 55.5% |
| Modulus of Elasticity | 200 GPa | 29000 ksi |
| Machinability | 45% | 45% |
| Charpy Impact | 62.0 J | 45.7 ft-lb |
Applications
19-9 DL is used in the following application areas:
- Turbine wheels
- Supercharger wheels
- Buckets
- Frames
- Casings
- Afterburner parts
