What is the Rockwell hardness of Monel 400?
Technical Data Sheet
Alloy 400 (UNS N04400) is a nickel-copper alloy that offers high strength (comparable to structural steels) and toughness. Alloy 400 also has excellent corrosion resistance in a variety of media including seawater, hydrofluoric acid, sulfuric acid, and alkalis. Used in offshore engineering, chemical, hydrocarbon processing equipment, and heat exchangers.
| Chemical Composition Limits | |||||||
| Weight % | C | S | Ni+Co | Fe | Mn | Si | Cu |
| Nickel 400 | 0.30 max | 0.024 max | 63.0 max | 2.50 max | 2.0 max | 0.50 max | 28-34 |
Typical Mechanical Properties
| Material | Form and Condition | Tensile Strength MPa | Yield Strength (0.2% Offset) MPa | Elongation (%) | Hardness Rockwell B |
| Alloy 400 | Annealed Rod and Bar | 517-620 | 172-345 | 60-35 | 60-80 |
| Alloy 400 | Hot Rolled Plate Annealed | 482-586 | 193-345 | 50-35 | 60-76 |
| Alloy 400 | Sheet Annealed | 482-586 | 207-310 | 45-35 | 65-80 |
| Alloy 400 | Tube Cold drawn Annealed Seamless | 482-586 | 172-310 | 50-35 | 75 max |
