Monel K-500 is a nickel-copper super alloy with characteristics and corrosion resistance same as the Monel 400. Due to the addition of aluminum and titanium Monel K-500 offers greater strength and hardness than Monel 400. In age-hardened condition, it has greater possibility towards stress corrosion cracking in some environments.
| Standard | Monel K500 |
| UNS | N05500 |
| Werkstoff Nr. | 2.4375 |
| Density | 8.44 g/cm3 |
| Melting Point | 1350 °C (2460 °F) |
| Tensile Strength | Psi-160000 ,MPa-1100 |
| Yield Strength (0.2%Offset) | Psi-115000 ,MPa-790 |
| Elongation | 20 % |
| Monel K500 | |
| Ni | 63.0 min |
| Fe | 0.5-2 |
| C | 0.25 max |
| Mn | 1.5 max |
| Si | 0.5 max |
| Cu | 27.0-33.0 |
| Al | 2.3-3.15 |
| Ti | 0.35-0.85 |
| S | 0.010 max |