No registration or passwords; no pop-up ads -- just aloha, fun, & answers.
(as an eBay Partner & Amazon Affiliate earns from qualifying purchases).
Home /
T.O.C.
Fun
FAQs
Good
Books
Ref.
Libr.
Advertise
 
Help
Wanted
Current
Q&A's
Site 🔍
Search
pub  Where the
world gathers for metal finishing
Q&As since 1989



-----

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,

Len Phillips
- 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.

tony kenton
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. Ciriani
promotions - 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
Michael Liu Taylor
specialty stainless steel distributor - Dallas, Texas
2003




(No "dead threads" here! If this page isn't currently on the Hotline your Q, A, or Comment will restore it)

Q, A, or Comment on THIS thread -or- Start a NEW Thread

Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful.

If you are seeking a product or service related to metal finishing, please check these Directories:

 
Jobshops
Capital
Equipment
Chemicals &
Consumables
Consult'g, Train'g
& Software


About/Contact  -  Privacy Policy  -  ©1995-2024 finishing.com, Pine Beach, New Jersey, USA  -  about "affil links"