Reference Guide

Satin/Brushed	Polished/Mirror	Etched

US Hardware Finish Specifications

Polished Metals Limited Finish Line:

M21 SMOOTH SPECULAR - Cutting with aluminum oxide compounds, starting with relatively coarse grits and finishing with 320 grit, using a peripheral wheel speed of 6,000 FPM. followed by buffing with aluminum oxide buffing compounds using a peripheral wheel speed of 7,000 FPM.

M22 SPECULAR - Cutting with compounds as for the M21 Finish, followed by a final light buffing.

M31 FINE SATIN - Wheel or belt polishing with aluminum oxide or silicon carbide abrasives of 180- 240 grit, using a peripheral speed of 6,000 FPM.

M32 MEDIUM SATIN - Same as above, however, abrasives of 120-180 grit are used.

M33 COARSE SATIN - Same as above, however, abrasives of 180-120 grit are used.

#3 FINISH - A polished obtained by finishing with an approximately 100 grit abrasive, generally used as a semi-final finish.

#4 FINISH - General purpose, bright finish, with a 150-240 mesh abrasive, following initial grinding with coarser abrasives.

#4 NON-DIRECTIONAL SATIN - 80 - 150 grit with no grain direction.

#4 LONG GRAIN - Elongated continuous grain.

#6 FINISH - A soft satin finish, with lower reflectivity than the #4 finish. It is produced by Tampico like brushing the #4 finish, using a medium abrasive with oil (when available).

#6 FINISH MIRROR BRITE - A highly finished product produced by buffing a surface which has been finely ground. Grit lines produced are heavier than a #7 finish.

#7 FINISH - A highly reflective finish produced by buffing a surface which has first been finely ground, but grit lines are not removed through the final buffing process.

#8 FINISH - The most reflective finish commonly produced. It is obtained by polishing with successively finer abrasives, then buffing with a very fine buffing compound. The surface is essentially free of grit line, though a certain angles some are still visible.

#8 ARCHITECTURAL - Same as above, but through a programmed process each sheet receives additional color buffing to achieve greater reflectivity.

#12 NON-DIRECTIONAL MIRROR* - A perfect mirror. No grain line.

*LIMITED AVAILABILITY

Pacific Plus Architectural Stainless Steel Sheet Finishes

No. 4 Satin brush finish-150-180 grit finish-A fine directional polish, typically used in the washroom accessories industry. Most 3.5" floppy diskette cover plates have this finish.

Hairline finish-80-140 grit finish-A well defined directional polish. Starting base substrate is a No. 4 finish sheet; these sheets are polished to provide a "continuous long grain" Hairline look. A finish which is popular with architects for its aesthetic look, it is equally popular with fabricators due to it's ease of fabrication and finish-matching properties after welding operations.

No. 7 mirror ** For comparison only; we do not sell **-A highly reflective finish, with "hazy" polishing lines that are still visible. This finish is often referred to as "directional mirror finish" or a "brush mirror finish." Polishing "grit" lines must be observed during the fabrication process to ensure a matching unidirectional finish on the final product.

No. 8 or True #8 mirror-This is the most reflective mirror finish on the market. All of the polishing, or "grit," lines from the preliminary polishing operations are removed. The look is that of a glass mirror. Sometimes referred to as a non-directional mirror finish, Super 8, No. 9, Perfect No. 10, and even No. 12 mirror.

CMP Super #8 mirror-Chemical Mechanical Polished Super #8 mirror finished sheets are guaranteed to be free from any manufacturing defects. This product represents the ultimate in mirror polished stainless steel. It is available as single-sided or double-sided mirror polished sheets.

Titanium colored stainless is available in gold, rose gold, rose copper, brass, bronze, black, brown, charcoal or as a hard clear coat over natural polished stainless steel finishes (Hairline, True #8, Super #8 mirror and texture etched designs in Hairline or True #8 mirror finishes).

Chemical etched designs stainless-A wide range of existing designs are available for the #4, Hairline, and True #8 mirror finishes. In addition, sheets can be colorized with titanium depending on specifications and custom designs may also be specified.

Stainless Steel Types

• Type 201 - chromium-nickel-manganese alloys. This alloy is a high performance austenitic stainless steel formulated to have a lower and more stable cost due to the substitution of manganese for a portion of the nickel found in the 300 series alloys. The resulting alloy has comparable properties and performance to the 300 series alloys.
• Type 302 - General purpose chromium nickel stainless steel. Its corrosion resistance is the same as type 304, with slightly higher strength due to additional carbon.
• Type 304 - chromium-nickel alloy. The most common grade, sometimes still referred to as 18/8 stainless. Low carbon chromium nickel stainless and heat resisting steel somewhat superior to Type 302 in corrosion resistance.
• Type 304L - Very low carbon chromium nickel steel with general corrosion resistance similar to Type 304 but with superior resistance to intergranular corrosion following welding or stress relieving. It is recommended for use in parts which are fabricated by welding and which cannot be subsequently annealed.
• Type 316 - Chromium nickel stainless and heat resisting steel with superior corrosion resistance to other chromium nickel steels when exposed to many types of chemical corrodents; superior creep strength at elevated temperatures.
• Type 316L - Low carbon chromium nickel stainless steel with general corrosion resistance similar to Type 316 but with superior resistance to intergranular corrosion following welding or relieving. It is recommended for use in parts which are fabricated by welding and cannot be subsequently annealed.
• Type 430 - Ferritic and martensitic chromium alloy. Good formability, but with reduced temperature and corrosion resistance.