A metal is classed as miscellaneous if it does not fall within another declared materials list (DML) category in ECSS-Q-70. Also included in this
section are comments on metal-based materials that are either prohibited or should be approached with caution for space applications.
Light alloys based on magnesium and beryllium are used in some primary and secondary structures.
Plating appears in many applications (e.g. electronics, thermal control and corrosion protection) and calls mainly for silver and gold.
"Memory alloys" based on titanium and nickel can find uses as actuators:
In addition to standard conventional
alloys, more recent material developments include:
-reinforced alloys (metal matrix composites -- MMC) consisting of magnesium alloys reinforced with carbon fibres;
-lithium additions to conventional magnesium alloys;
-reinforced silver alloys.