The document provides information about Dow Corning Metal Protective Coating, a transparent, dry, wax-like coating that protects metal parts from corrosion. It can be used to protect high-value metal parts during production, storage, and shipment, especially in humid or corrosive environments. The coating prevents corrosion, has good lubricating properties, and does not typically need to be removed before further processing. It can be applied by dipping, spraying, or brushing and builds up protection through multiple thin coats.

1. Product Information
Specialty
Coatings Dow Corning ®
Metal Protective Coating
FEATURES Coating prevents corrosion on metal parts in storage, overseas
• Good corrosion protection in shipments and other high-humidity, long-term exposure
thin film
• Colorless USES
• Non-oily Dow Corning ® Metal Protective Coating is typically used to protect high-value-
added metal parts during production, storage and shipment – especially
COMPOSITION components exposed to high humidity, salty conditions or corrosive
• Corrosion-protective coating industrial environments.
Typical uses for Dow Corning Metal Protective Coating include:
• Manufacturing – machined surfaces, stampings, raw stock, work-in-
progress parts and finished products
• Aircraft – corrosion protection
• Machine shop and tool room – dies, fixtures, jigs, tools, molds, guides and
ways, and raw ground stock
• Maintenance – machine tools, pneumatic tools, spare parts, storage and
product equipment temporarily out of service
• Finished products – machined and painted surface protection during
domestic and foreign shipments
DESCRIPTION HOW TO USE
Dow Corning Metal Protective Coating Dow Corning Metal Protective
is a transparent, dry, wax-like coating Coating is ready to use as supplied.
that protects metal parts from corro- However, for uniform solids
sion. The coating has good inherent distribution and coating thickness,
lubricating properties and usually the bulk material should be gently
does not require removal prior to mixed before and during use.
any subsequent machining, assem- Dipping will provide a uniform
bly or start-up of equipment. If coating; however, spraying is often
necessary, Dow Corning Metal Pro- the preferred method of
tective Coating may be removed by application. For best results, three
most common solvents such as light applications are better than
mineral spirits or Dow Corning ® OS one heavier application. For smaller
Fluids. jobs and touch-up work, Dow Corning
Metal Protective Coating may be
Parts protected with Dow Corning applied from an aerosol container.
Metal Protective Coating may be Brushing may also be used. For best
examined through the transparent protection, scratching of the coating
coating. Additionally, the parts will after application should be avoided.
remain relatively clean since the dry
coating will not readily pick up dirt, Surface Preparation
dust and grit under normal Surfaces to be protected with
handling and storage. Dow Corning Metal Protective
Coating must be clean and dry.

2. TYPICAL PROPERTIES Although the coating will not
These values are not intended for use in preparing specifications. permit moisture to penetrate, it
does not displace moisture already
Test Unit Result on the metal surface.
As Supplied
Appearance1 Opaque, yellow liquid
Density1 lb/gal 6.8
Film Thickness
Boiling Point1 °F (°C) 240 (115) A film thickness suitable for most
Flash Point1 °F (°C) 82 (28) requirements (0.40 mil) can be
Surface Coverage, film thickness of obtained by dipping at normal room
0.0001 inch sq ft/gal 2100 temperature. For a thicker film and
0.0002 inch sq ft/gal 1100 increased metal protection,
0.0003 inch sq ft/gal 700 additional dip coatings may be
Drying Time, repeated after allowing the first coat
bulk, thin film, one dip minutes 10 to 30 to dry. Similar buildup of the
aerosol spray, thin film, one pass minutes 10 to 20
protective film may be achieved by
Solvent,
bulk Mineral spirits
repeated spray or brush
aerosol spray Mineral spirits plus applications, with intervals for
nonchlorofluorohydro- drying between coats. A thick film,
carbon propellant however, may cause the wax to pull
away from corners and metal edges,
As Applied leaving metal exposed for corrosion.
Appearance Transparent, If a thinner film is desired, the
non-oily wax
liquid material may be diluted by
Softening Point °F (°C) 150 (65)
Service Temperature Range, estimated °F (°C) -40 to 150 (-40 to 65)
using a suitable chlorinated solvent
Single Dip Film Thickness such as Chlorothene ®1, which also
at 68°F (19.9°C) mils 0.4 reduces drying time, or by using
Corrosion Resistance, mild steel mineral spirits.
5 percent salt spray, dipped from bulk hours 200+
5 percent salt spray, aerosol spray hours 72+ Removal of Film
humidity room cycles 50 In most cases, Dow Corning Metal
Lubrication2 Pass, no stick-slip
Protective Coating does not have to
Coefficient of Friction 0.12
1
be removed from coated parts before
Properties for bulk form. Aerosol contains bulk plus nonchlorofluorohydrocarbon propellant.
2
they are machined, assembled or
Faville-LeValley Corp., LFW-4 Press Fit Machine.
Specification Writers: Please obtain a copy of the Dow Corning Sales Specification for this
started up. However, if removal is
product and use it as a basis for your specifications. It may be obtained from any Dow Corning desired, degreasing with common
Sales Office, or from Dow Corning Customer Service in Midland, MI. Call (517) 496-6000. solvents such as mineral spirits or
Dow Corning OS Fluids will normally
remove the coating as will steam
cleaning or alkali cleaners.
1
Registered trademark of The Dow Chemical
Company.

3. Note: Caustic cleaners should not STORAGE AND SHELF LIFE WARRANTY INFORMATION
be used to remove Dow Corning Metal When properly stored under – PLEASE READ CAREFULLY
Protective Coating from aluminum normal warehouse conditions, The information contained herein
surfaces. Dow Corning Metal Protective is offered in good faith and is
Coating has a shelf life of 60 months believed to be accurate. However,
Caution from date of manufacture. To obtain because conditions and methods of
Dow Corning Metal Protective uniform mixture, slight stirring after use of our products are beyond our
Coating contains mineral spirits. It storage is recommended before use. control, this information should not
should be used in a well-ventilated be used in substitution for customer’s
area, and the precautions normally PACKAGING tests to ensure that Dow Corning’s
followed when working with this Dow Corning Metal Protective products are safe, effective, and fully
solvent should be implemented. Coating is supplied in 30-lb (13.6- satisfactory for the intended end use.
Solvents used to dilute this material, kg) pails and 375-lb (170-kg)
as well as metal cleaning or alkali drums, net weight. Dow Corning Dow Corning’s sole warranty is
cleaners, should only be used with Metal Protective Coating aerosol is that the product will meet the
adequate ventilation. Follow hand- supplied in 10-oz (284-g) Dow Corning sales specifications in
ling precautions on container labels. containers, net weight. effect at the time of shipment. Your
exclusive remedy for breach of such
USE LIMITATIONS SAFE HANDLING warranty is limited to refund of pur-
Painted surfaces should be well INFORMATION chase price or replacement of any
cured before Dow Corning Metal product shown to be other than as
PRODUCT SAFETY INFORMATION
Protective Coating is applied. If the warranted. Dow Corning specifically
REQUIRED FOR SAFE USE IS NOT
intent is to remove Dow Corning disclaims any other express or
INCLUDED. BEFORE HANDLING,
Metal Protective Coating from the implied warranty of fitness for a
READ PRODUCT AND MATERIAL
painted surface at a later date, only particular purpose or merchantabil-
SAFETY DATA SHEETS AND CON-
one light application should be ity. Unless Dow Corning provides
TAINER LABELS FOR SAFE USE,
made. you with a specific, duly signed
PHYSICAL AND HEALTH HAZARD
endorsement of fitness for use,
INFORMATION. THE MATERIAL
This product is neither tested nor Dow Corning disclaims liability for
SAFETY DATA SHEET IS AVAILABLE
represented as suitable for medical any incidental or consequential
FROM YOUR DOW CORNING REP-
or pharmaceutical uses. damages. Suggestions of use shall
RESENTATIVE, OR DISTRIBUTOR,
not be taken as inducements to
OR BY WRITING TO DOW CORNING
SHIPPING LIMITATIONS infringe any patent.
CUSTOMER SERVICES, OR BY
Liquid – DOT classification: CALLING (517) 496-6000.
flammable liquid.
Aerosol – DOT classification:
flammable gas.

4. Printed in USA Dow Corning is a registered trademark of Dow Corning Corporation.
Form No. 71-310K-99 AGP4903 ©1994, 1998, 1999 Dow Corning Corporation. All rights reserved.