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Monel 400 and K-500 plate, 6 mm
Monel 400 and K-500 plate, 6 mm thick, supplied as sheet or cut to size for marine and chemical service.
Two grades
| Grade | UNS | Condition | Chosen for |
|---|---|---|---|
| Monel 400 | UNS N04400 | Annealed | Corrosion resistance; marine, chemical, sour service |
| Monel K-500 | UNS N05500 | Age hardened | Same corrosion, roughly double the strength |
The choice is usually about load, not corrosion
K-500 is 400 with aluminium and titanium added so it can be age hardened. Corrosion resistance is essentially the same; the strength is roughly double. Where the part carries load in seawater the difference decides the order — not a difference in corrosion.
6 mm as standard
Plate is supplied at 6 mm, as sheet or cut to size. If the drawing calls for a finished thickness after machining, say so: the starting plate is thicker than the finished part.
Where it is used
- Marine and offshore fittings
- Chemical process equipment
- Sour-service components
- Pump and valve parts
- Heat exchanger tube sheets
Where to read next
| Grades & composition | Monel 400 and K-500, and the difference in service. |
| Sizes & tolerances | Thickness, sheet size and cut-to-size parts. |
| Supply forms | As-rolled sheet, or cut and machined parts. |
| Testing | PMI, tensile, hardness and UT on request. |
| Ordering | The six details that produce a quotation. |