I received confirmation by G.RAU that their bimetals marked TB1577GE are crossed referenced to DIN 1715 TB1577B.
However we still have no full standard to review the Coefficient of Expansion (CoE) between the A and B specs - although I have found a snippet detailing some specs (in German), see attached. I can't quite understand the left hand column, is it saying that the meterial is different between the two? Is it a percentage/ratio of the composition?
G.RAU's product literature implies the only difference between A and B is simply the stress characteristics.... not the CoE ... interesting.....
I need to translate the DIN spec so another job for latter today...
I'll order my new VFC this weekend (hopefully) and of course will post any findings here too.....should anyone really care...
If the the new VFC allows the coolant to run at 110C as others then guess I'll have to send it back to Benz! I figure if I buy from my local dealer I won't have an issue resolving temperature issues should this be the case - but there is a reasonable price penalty of course!
Lea