Monel 400

Nickel-copper alloy resistant to sea water and high-temperature steam.

Core Principles & Analysis

• Created in 1905 and named for International Nickel Company president Ambrose Monell, it was one of the first commercial nickel alloys.
• Its roughly 2:1 nickel-copper ratio mirrors the natural Sudbury ore it was first smelted from and resists seawater, brine, and hydrofluoric acid.
• Monel sheet roofed New York's original Pennsylvania Station, and the alloy remains standard for marine propeller shafts and pump impellers.

Specifications & Metrics

• DENSITY: 8.80 g/cm³
• YIELD STRENGTH: 240 MPa
• HARDNESS: 130 HB