Summary for mks 720 coating Discussion
MKS 720 coating is identified in the thread as a DELTA MKS product from Doerken MKS, not as Dacromet or Geomet. In the original question, Sanjay Chitlangia asked whether MKS 720 was equivalent to Dacromet 310 or Geomet 720. Sriram Vangal answered that MKS stands for Micro layer Korosion Systeme and is a brand of M/s Doerken MKS, but is neither Dacromet nor Geomet. Later, when Anthony Heno asked about Delta MKS 9000, Ted Mooney said Sriram’s answer still applies: it is a competitive lamellar zinc dip-spin coating free of hexavalent chromium, but whether it is “equivalent” depends on the specifier’s needs and cannot be stated as a universal yes or no. The discussion emphasizes that equivalence is application-specific.
Q. We want to know what is MKS 720 coating. Is it equivalent to Dacromet 310 or Geomet 720?
Sanjay Chitlangia
fasteners manufacturer – Delhi, India
2007
A. MKS Stands for Micro layer Korosion Systeme – a brand of M/s Doerken MKS, manufacturers of DELTA MKS systems. It is neither Dacromet nor Geomet.
Sriram Vangal
– Pune, Maharashtra, India
August 25, 2014
What is Delta MKS 9000 Coating
Q. Is Delta MKS 9000 a Dacromet or Geomet coating?
Anthony Heno
– Pensacola Florida, USA
October 6, 2017
A. Hi Anthony. Sriram’s answer still pertains. It is neither Dacromet nor Geomet, but a competitive product. It is a lamellar zinc dip-spin coating which is free of hexavalent Cr, but since it’s not identical to Dacromet or Geomet, only the specifier can decide whether it’s equivalent enough for their purposes.
While that may sound like ducking the question, consider a day-to-day example: is Coke ‘equivalent’ to Pepsi? To Diet Pepsi? To Diet Seven Up? To Orange Juice? Nobody can offer a firm border for ‘equivalent’; there is no answer.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
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October 2017
Q. I have a wide range of fasteners (hex bolts, washers, screw) that are zinc electroplated, approximately 3 million pieces. Do the parts need to be stripped in order to be dip spun with Geomet 720?
Matt Sulimowski
– Glendale Heights, Illinois USA
September 26, 2018
A. Hi Matt. I would say “probably” for 3 reasons.
1. Adhesion may not be good enough;
2. sufficient clearance may not be available for both coatings on small screw threads; and
3. the old hardware might have hexavalent chromates on it, which would likely be a problem since the new coating has been specified as hex-free.
Regards,
Ted Mooney, P.E. RET
Striving to live Aloha
finishing.com – Pine Beach, New Jersey
Need quick confidential answers? $25
Need project assistance? $100/hr.
September 2018