Hazards when working with magnesium parts - AS60.00-Z-0005-01N
WARNING: This page does not describe the selected car, but rather 203 other vehicles, including the 2020 Mercedes-Benz SLC300, 2020 Mercedes-Benz SL550, 2020 Mercedes-Benz SL450, 2020 Mercedes-Benz S65 AMG, and 2020 Mercedes-Benz GLA250. However, it is still accessible from the selected car via links, so may be relevant.
Model 215
MODEL 215
General:
Magnesium has the property of forming a compound with oxygen extremely quickly. Nevertheless, it is resistant to air because it is coated with a dense, unbroken thin oxide skin which protects the metal underneath from further oxidation. If magnesium is ignited in air, it burns at approx. >500 °C with dazzling white light and severe heat development (approx. 2400 °C).
Like aluminum dust, magnesium dust is also combustible, as well as explosive when mixed with oxygen.
For further information see the accident prevention regulations or the trade association regulations.
Machining/treating magnesium:
- Processing magnesium components with an open flame (welding, cutting, soldering, heating, etc.) and grinding that creates sparks are prohibited .
- In the event of structural damage to the driver doors, these must be replaced completely.
Corrosion protection:
- Incorrect coatings, areas affected by corrosion and surface repairs must not be repaired for reasons of corrosion.
- To prevent contact corrosion at the threaded connections on the inner door parts, coat contact surfaces and screw shanks with paint after removal or replace screws/bolts.
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.