Satin Anodized Aluminum

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Author Message Robin E. Snyder Senior Member Username: robin Post Number: 716 Registered: 08-2004 Posted on Sunday, February 11, 2018 - 07:50 pm:    Is this finish specified the same as clear anodized (eg: AA-M12C22A41 (Mechanical Finish: nonspecular as fabricated; Chemical Finish: etched, medium matte; Anodic Coating: Architectural Class I, clear coating 0.018 mm or thicker) complying with AAMA 607.1.) With a qualifier of "Satin Finish". Or, is there some other way to specify it? Dave Metzger Senior Member Username: davemetzger Post Number: 719 Registered: 07-2001 Posted on Sunday, February 11, 2018 - 08:28 pm:    Robin: The "M" designates the mechanical finish that the aluminum member receives. The "C" designates the chemical finish, and the "A" designated the anodic coating, ie type of acid, color, thickness, etc. Specific descriptions of the M, C and A designations are given in AAMA A611, and also are found in http://www.nomma-northeast.org/wp-content/uploads/2010/11/NAAMM-NOMMA-Finishes-Manual.pdf Three satin designations are listed: M31 fine satin M32 medium satin M33 coarse satin I don't remember ever specifying a satin finish other than M32. John Bunzick, CCS, CCCA, LEED AP Senior Member Username: bunzick Post Number: 1736 Registered: 03-2002 Posted on Friday, February 23, 2018 - 12:32 pm:    Robin, remember that the "satin" part can apply to bronze anodized, too. I suspect the reference is intending clear anodized, but worth checking. Guest (Unregistered Guest) Unregistered guest Posted on Friday, February 23, 2018 - 02:29 pm:    Wouldn't the M, C, and A designations really depend on (or be affected by) specific finisher's operations, in which type of mechanical equipment, chemicals used, and coating processes utilized? I typically try to avoid this type of minutiae in finish specifications, and rely mostly on "matching Architect's (or Designer's) sample."