Information on machining/treating magnesium components - AH60.00-P-0023-01R

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General: 

Magnesium has the property of forming a compound with oxygen extremely quickly. Nevertheless it is corrosion-resistant when exposed to air, because it forms a tight, continuous thin oxide skin which protects the metal beneath from further oxidation.

If magnesium ignites, then it burns at approx. > 500 °C with a blinding white light and strong heat development (approx. 2400 °C).

Magnesium dust combusts and explodes just as easily as aluminum dust.

For additional information see Accident Prevention Regulations or the regulations of the trade association.

Machining/treating magnesium: 

• Machining/treating magnesium components by means of an open flame (welding, cutting, soldering, heating, etc.) or by spark-creating grinding is prohibited.
• Any components that suffer structural damage must be replaced completely.

  Corrosion protection: 

• Faulty coatings and points affected by corrosion should never be repaired for corrosion reasons.
• Repair over large surfaces should not be performed for reasons of corrosion.
• To prevent contact corrosion on the threaded connections of the components

  (e.g. internal door parts); the contact surfaces and screw shanks must be coated with paint or the screws must be replaced after dismantling.

• Do not use zinc dust paint! Plastic bushings and disks installed as standard must not be removed and damaged parts must be replaced.
• Due to extremely severe contact corrosion, damaged threads in the magnesium pressure castings may only be repaired with the MB-approved Helicoil thread inserts made of aluminum.