Monel 400 Seamless Pipe (UNS N04400)
ASTM B165 Monel 400 pipe — the classic marine alloy. Exceptional seawater corrosion resistance, HF acid service. Ni-Cu alloy (67% Ni, 23% Cu).
Material
Monel 400 (UNS N04400)
OD Range
3 – 168mm (1/8" – 6")
WT Range
0.5 – 25mm
Standard
ASTM B165 / B163 / B127
Overview
Monel 400 has been the benchmark material for seawater and marine engineering for over a century. Its unique nickel-copper composition provides natural resistance to seawater corrosion, biofouling, and cavitation erosion. Also the premier alloy for hydrofluoric acid service — maintaining integrity at all concentrations up to the boiling point.
Specifications
| Specification | Value |
|---|---|
| Material | Monel 400 (UNS N04400) |
| OD Range | 3 – 168mm (1/8" – 6") |
| WT Range | 0.5 – 25mm |
| Standard | ASTM B165 / B163 / B127 |
| Key Feature | Ni-Cu alloy: superior seawater resistance |
| Max Service Temp | 480°C |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 483 MPa (70 ksi) |
| Yield Strength 0.2% | ≥ 172 MPa (25 ksi) |
| Elongation | ≥ 35% |
Typical Applications
Seawater piping & heat exchangersHF acid alkylation unitsOffshore splash zoneMarine propeller shafts
Material Specifications
View detailed chemical composition, mechanical properties, and corrosion resistance data:
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