Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ
The authoritative public forum
for Metal Finishing since 1989
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Assistance for Ra
I have a metric customer requesting a finish of RA-08. for a aluminum section (spacer plate) for a project. What is an US equivalent or do you think he means Ra-8
Thanks,
- Oak Ridge , Tennessee, USA
2003
I don't recognize the use of that reading as standard data; however, to play it safe, I suggest you call the customer to verify.
AF Kenton
retired business owner - Hatboro, Pennsylvania
2003
Your customer probably meant Ra=0.8 micrometers, which (multiplied by 40) corresponds to a Ra=32 microinches.
Giovanni M. Cirianipromotions - Altavilla, VI, Italy
2003
I thought Ra was measured in exclusively in microinches and not in micrometers? I agree with the earlier post, when in doubt ask the customer.
Michael Liu Taylor
specialty stainless steel distributor - Dallas, Texas
2003
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