Designation
- Grade
- CY-40
- UNS
- N06040
- Standard
- ASTM A494/A494M
- Family
- Nickel-based alloys
- Density
- ≈ 8.30 g/cm³
- Usual delivery condition
- As cast
Chemical composition
| Element | Mass fraction, % |
|---|---|
| C | ≤ 0.40 |
| Mn | ≤ 1.50 |
| Si | ≤ 3.00 |
| Cr | 14.0–17.0 |
| Fe | ≤ 11.0 |
| Ni | bal. |
Main elements only. Phosphorus, sulphur and residual-element limits are specified in the standard and are not reproduced here.
Mechanical properties
| Condition | Tensile strength Rm, min. (MPa) | Yield strength Rp0.2, min. (MPa) | Elongation, min. (%) |
|---|---|---|---|
| As cast | 485 | 195 | 30 |
Minimum values (or ranges) for separately cast test bars as specified in ASTM A494/A494M.
Characteristics
- Corrosion and oxidation behaviour
- Selected for acids and aggressive chemical process media
- Weldability
- Good with matching filler and standard procedures
- Machinability
- Moderate; work hardening or built-up edge to be considered
- Typical applications
- Valves Chemical processing High-temperature service Energy
International cross-reference
| System | Designation | Relationship |
|---|---|---|
| UNS (wrought) | N06600 (Alloy 600) | Comparable properties |
Casting and processing considerations
Melting practice has a strong influence on quality: reactive elements such as aluminium and titanium in superalloys normally require vacuum melting and pouring, while corrosion-resistant grades are commonly air melted with careful control of carbon and silicon. Corrosion-resistant grades are solution annealed; weld repair and its heat treatment must follow the material specification.
Reference data compiled from the cited standards for orientation. Always work from the current edition of the governing specification; values are not a guaranteed LOSTWAX delivery specification.