Ability of GGG40 to spark

[eit2b]

Does GGG40 spark on contact (speaking of a metal to metal contact) and is there any documentation to support this? Any help you can provide would be greatly appreciated.

 

[arunmrao]

GGG40 is a flake graphite cast iron. Any excessive friction between 2 parts will result in sparking. However, the presence of graphite flakes affords dry lubrication ,thus reducing sparking tendency when in contact within limits.

 

[EdStainless]

Why does sparking matter to you?
Yes this material can spark, but less than steels.

If you are concerned about ignition then non-sparking doesn't really matter. I have watched brass tools used to light solvent fires. It is the heat of the local impact, it is a lot more complex than sparks.

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