ANSI BHMA A156.18-2000 pdf download SPONSOR BUILDERS HARDWARE MANUFACTURERS ASSOCIATION, INC. Approved May 19, 2000 AMERICAN NATIONAL STANDARDS INSTTTUTE, INC.
1
SCOPE
1.1 This Standard establishes finish test methods and code numbers for finishes on various base materials.It includes criteria for viewing comparative finishes to the BHMA match plates and establishes five categories of finishes.
2 DEFINITIONS
2.1 Blackened: a surface treated to be light absorbing and not rflective.
2.2 Bright: a reflective mirror like surface.
23 Coating: Coating is the application, of organic or inorganic materials to, or the conversion of the
surface of the base material, which is then termed a substrate for the changing of appearance, or for protection or both. The topcoat when applied establishes the type of coating for test purposes. The top coat,when transparent, is often referred to as a clear coat.
2.3.1 Organic Coating: Coatings with a material containing carbon compounds, excepting cyanides and carbonates, and including mixtures of organic and inorganic materials.
2.3.2 Inorganic Coating: Coating with metllic or other non-carbonaceous materials or conversion of the surface to an oxide.
2.3.2.1 Plating: Coating with a metallic deposit by chemical, electro-chemical, mechanical or electromechanical means.
2.3.2.2 Oxidizing: Coating by conversion of the surface of the base material to an oxide by addition of oxygen or removal of hydrogen.
2.3.2.2.1 Anodizing (aluminum): Coating by electro-chemical process which converts the surface (aluminum) metal to (aluminum) oxide due to reactions at the anode in an acidic solution.
2.3.3 Vacuum Applied Coating; Electrochemical or electrophysical depositin, operated in a vacum to deposit an adherent, dense, thin film coating,
2.4 Corrosion: Breakdown or eating away of the base material or substrate, not to be confused with staining. Corrosion of brass or bronze material can be green, brown or pink corrosion; corrosion of steel or stainless steel material is red rust, corrosion of aluminum or zinc base material is white.
2.5 Highlighted: a part of the finish is empbasized.
2.6 Matching Finish: Equivalent in color, texture, base material, overall aesthetics and appearance.
2.7 Relieved: Heightening the efet of a finish usually by application by an abrasive.
2.8 Satin: A smooth dull finish with or without a directional pattemn.
2.9 Signifcant Surfaces: Surfaces of a product that are visible or exposed afer the product are istalled.