Monel rivets with mandrel made of galvanized steel. Monel blind rivets are particularly suitable for applications in steel and aluminium materials, since the small potential difference results in a good resistance to galvanic corrosion (better than stainless steel). Monel is a nickel-copper alloy with high tensile strength, which is very resistant to atmospheric corrosion and sea water. We supply open and closed type Monel rivets. Closed rivets provide an airtight seal.