SAE AS 1701C pdf download

SAE AS 1701C pdf download.Lubricant Solid Film.
This document covers the performance requirements for solid dry film lubricants, air dried, or heat cured for use in aerospace applications. These lubricants are intended to prevent galling, and may be capable of remaining effective for extended periods of time after exposure to extreme environmental conditions.
1.1 Field of Application:
The solid film lubiicants covered by this document are intended for aerospace applications exposed to extreme environments. Some may be suitable for use in a vacuum at temperatures ranging from
-365 to +1400 °F (-221 to 760 IC).
1.2 Product Classification:
Inthis document is defined the various classes of solid film lubricants, their temperature limitations. and compatibility usage (see Table 1).
1.3 Safety – Hazardous Materials:
While the materials, methods, applications, and processes described or referenced in this document may involve the use of hazardous materials, this document does not address the hazards which may be involved in such use. The product vendor shall prepare materials safety data sheets (MSDS) in accordance with AMS 2825 and abide by MSDS requirements to ensure familiarity with the safe and proper handling of hazardous materials used and take necessary precautionary measures to ensure the health and safety of all personnel involved.
3. TECHNICAL REQUIREMENTS:
3.1 General:
The solid dry fdm lubricants shall NOT contain silver or its compounds, lead or halogenated solvents as part of their formulations. The lubricants shall consist essentially of lubricating solids, dispersed in a suitable binder and be capable of being applied by either brushing, spraying, or dipping. The user should know which lubricants cause detrimental effects for the applications in which they are used.
3.1.1 Physical Properties: The application of the solid film lubricants to the pioduct or component, including curing, shall have no adverse effect on the physical or mechanical properties of the product.
3.1.2 Process Application: Process application shall be in accordance with the requirements of AS71 08.
3.2 Lubcicant Composition:
Thecomposition of the solid film lubricant shall be such to produce cured film coatings capable of meeting the requirements of this document.
3.3 Bonding Capability:
The solid film lubricants shall be capable of being applied as a coating to specified surface(s). completely cured, arid ready for use. For testing requirements in 3.4 through 3.12, the lubricant shall be completely cured and bonded to panels, specimens, or actual parts.
3.3.1 Surface Treatment of Parts: To obtain maximum adhesion and to minimize the possibility of surface contamination, surfaces of parts shall be treated per Table 2 prior to the coating application unless otherwise specified in the purchase order or applicable drawing.
3.4 Coating Thickness:
Unless otherwise specified, the coating thickness on external surfaces requiring coating shall on external surface requiring coating shall be 0.0002 to 0.0005 in thick (0.0051 to 0.0127mm thick) when determined in accordance with 4.2.1. Unless otherwise specified, internal surfaces requiring coating shall show complete coverage with no restnctions on thickness when determined visually with no magnification. Surfaces defined as coating optional, external or internal shall not be inspected for coverage or thickness.
3.5 Film Adhesion:
The lubricant film when tested in accordance with 4.2.2 shall not be lifted from the test panel or part such that the substrate is exposed. The coatings may have a uniform deposit of powdery material clinging to the tape.
3.5.1 Fluid Resistance: The lubricant film shall not flake, crack, peel, or be removed when tested according to 4.2.2.1.
3.8 Shock Sensitivity to Uquid Oxygen:
The lubricant film, shall show no adverse reaction to liquid oxygen wtien tested in accordance with
4.2.5.
NOTE: This requirement pertains to Class VI lubncants only.
3.9 Film Appearance:
The lubricant film shall appear free from cracks, scratches, blisters, foreign matter or other surface imperfections when examined in accordance with 4.2.6.
3,10 Corrosion Resistance:
Class I and II lubncant films shall show no signs of substrate corrosion greater than 1/16 inch in diameter when tested In 4.2.7, exposure times shall be 100 hours for Class I and 72 hours for Class II.
NOTE: All other classes are designed for corrosion resistant alloys and materials.
3.11 Coefficient of Friction:
The lubricant film shall have a static coefficient of friction of 0.03 to 0.13 when tested in accordance with 4.2.8 and the test shall be performed ifl an oscillatory mode if static coefficient is to be determined.
3.12 Wear Requirements:
3.12.1 Class I Lubricants.