| Material Group | S - Superalloys (Heat resistant and Titanium) |
| Sub-Group | Superalloy |
| Hardness | 280.0 HB |
| Tensile Strength | 900 [N/mm^2] |
| Machinability Range | 40% |
Discaloy 24 is an iron-based heat resistant superalloy (HRSA) material with a machinability rating of 40% and hardness of 280 HB.
Discaloy 24 has 54.3% iron, 26% nickel and additional alloying elements per the table below.
Iron-based superalloys are a more economical alternative to nickel-based alloys. They provide the same advantages but to a lesser extent and at a lower price. They are used mostly on less critical components that still require heat resistance properties. This sub-group is also much easier to machine relative to the nickel and cobalt based superalloys.
Superalloys should be machined with a positive and sharp cutting edges. Geometries that are suitable for austenitic stainless steel will also work well on HRSA. However, quality manufacturers will have in their catalogs additional geometries that are specifically designed for these challenging materials.
SUMMARY:
| Standard | Name |
|---|---|
| SAE | ASTM A638 |
| ANFOR | Z3NCT25 |
| Element | Amount |
|---|---|
| Iron (Fe) | 54.3% |
| Nickel (Ni) | 26% |
| Manganese (Mn) | 0.9% |
| Silicon (Si) | 0.8% |
| Carbon (C) | 0.4% |
| Chromium (Cr) | 13.5% |
| Aluminum (Al) | 0.1% |
| Titanium (Ti) | 1.7% |
| Molybdenum (Mo) | 2.7% |
| Application | Vc (m/min) | Vc (SFM) |
|---|---|---|
| Turning | 135-185 | 440-610 |
| Milling | 100-140 | 330-460 |
| Parting | 85-115 | 280-380 |
| Grooving | 120-160 | 390-520 |
| Drilling | 120-160 | 390-520 |
| Honing Size | 0.02-0.05 mm / 0.001-0.002" |
| Rake Angle | 13° -18° |
| Land Angle | Neutral |
| Land Width | 0.10-0.20 mm / 0.004-0.008" |
| Ground Insert | Recommended |
