# Monel 400

*N04400*

> Ni-Cu alloy with outstanding seawater and HF acid resistance for marine and chemical service.

Monel 400 is a nickel-copper alloy widely specified for seawater, chemical and marine applications. It offers excellent corrosion resistance in a wide range of media including seawater, hydrofluoric acid, sulfuric acid and alkalis. It is non-magnetic and retains strength across a broad temperature range.

## Key features

- Excellent seawater corrosion resistance
- Resistant to HF acid and alkalis
- Non-magnetic
- Good mechanical properties from cryogenic to 540°C
- NACE MR0175 qualified

## Applications

- Seawater piping and pumps
- HF acid alkylation units
- Marine propeller shafts
- Chemical processing valves
- Heat exchanger tubing

## Standards

- ASTM B164
- ASTM B127
- ASTM B165
- NACE MR0175