Alloy 400 (UNS: N04400)
| Bellows Materials | Alloy 400 |
| Trade Name | Monel 400 |
| Description | A nickel copper alloy which has high strength over a wide temperature range up to 1000 F. It has resistance to a wide variety of corrosive conditions. |
| Application Notes | Monel 400 is most frequently applied in a range of environments going from mildly oxidizing through neutral and to moderately reducing conditions. Additional application area of this material is in marine environments and other non-oxidizing chloride solutions. Like with commercially pure Nickel, Monel® 400 is low in strength in the annealed condition, for this reason a variety of tempers are used to achieve higher strength levels. Monel 400 is one of the few alloys that maintains its strength in sub-zero or cryogenic temperatures, so it is often used in those applications. |
| Industry Uses /Products | Marine Components chemical equipment hydrocarbon processing valves pumps fittings fasteners heat exchangers flexible metal hose |
| UNS | N04400 |
| Specifications | Sheet – ASTM B127, ASME SB127, AMS 4544 |
Material Properties
| Density, ρ, lbs/in^3 | 0.319 |
| Yield Strength, Sy, Psi | 28000 |
| Tensile Strength, Su, Psi | 70000 |
| Elongation % | 35 |
| Youngs Modulus, E psi | 28000000 |
Post Weld Heat Treatement (PWHT)
| Hardening | Cannot be hardened by heat treating |