
Originally Posted by
carburator
Ok im interested in this how can you tell the difference between a SG iron or grey iron bed?
most of the chink stuff is not induction harden sideways like the colchesters where or maybe thats
just a myth about the place..
Without the owner getting all bent out of shape? On a new machine you can get a good idea by just wiping your finger over a machined but out-of-the-way surface. Grey CI,(especially most of the shit out of China) has a lot more free carbon which gets left on the surface by the machining.
Of course you could ask the vendor for a traceable standards materials compliance cert. Or a sample you can test...
Go soothingly on the grease mud, as there lurks the skid demon
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