Standard Test Method for Explosive Reactivity of Lubricants with Aerospace Alloys Under High Shear

SCOPE
1.1 This test method is used to evaluate for explosive reactivity of various lubricants in the presence of aerospace alloys under high shear conditions.  
1.2 The values stated in SI units are to be regarded as the standard. In cases where materials, products, or equipment are available in inch-pound units only, SI units are omitted.
1.3 This standard should be used to measure and describe the response of materials, products, or assemblies to heat and flame under controlled conditions and should not be used to describe or appraise the fire-hazard or fire-risk of materials, products, or assemblies under actual fire conditions. However, results of the test may be used as elements of a fire-hazard assessment or a fire-risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard or fire risk of a particular end use.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

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Publication Date
31-Dec-1999
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ASTM D3115-95(2000) - Standard Test Method for Explosive Reactivity of Lubricants with Aerospace Alloys Under High Shear
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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
An American National Standard
Designation:D3115–95 (Reapproved 2000)
Standard Test Method for
Explosive Reactivity of Lubricants with Aerospace Alloys
1
Under High Shear
This standard is issued under the fixed designation D 3115; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope 3.1.1 explosive reactivity, n—occurrence of sparks, smoke,
or explosive (audible) sounds during this test.
1.1 This test method is used to evaluate for explosive
3.1.2 lubricants, n—liquid materials used as lubricants or
reactivity of various lubricants in the presence of aerospace
cutting fluids in the presence of aerospace alloys.
alloys under high shear conditions.
1.2 The values stated in SI units are to be regarded as the
4. Summary of Test Method
standard. In cases where materials, products, or equipment are
4.1 A shaped dowel pin made of the test material is rotated
available in inch-pound units only, SI units are omitted.
at 1760 rpm under a pressure of 689 MPa (1000 psi) for 1 min
1.3 This standard should be used to measure and describe
in a shaped hole (drilled into a block of the test material)
the response of materials, products, or assemblies to heat and
containing the test lubricant. Observation for indications of
flame under controlled conditions and should not be used to
reaction is made.
describe or appraise the fire-hazard or fire-risk of materials,
products, or assemblies under actual fire conditions. However,
5. Significance and Use
results of the test may be used as elements of a fire-hazard
5.1 Explosive reactivity has resulted when parts made from
assessment or a fire-risk assessment which takes into account
some light alloys, typically high in aluminum and magnesium,
allofthefactorswhicharepertinenttoanassessmentofthefire
are loaded under shear conditions while in contact with certain
hazard or fire risk of a particular end use.
lubricants.Atypical example is a threaded part, lubricated with
1.4 This standard does not purport to address all of the
a chlorofluorocarbon grease, pulled up normally tight.
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
6. Apparatus
priate safety and health practices and determine the applica-
4
6.1 Fluted Ball-End End Mills, two, 12.7 6 0.025 mm
bility of regulatory limitations prior to use.
(0.500 6 0.001 in.) in diameter with a 6.35 6 0.025-mm
(0.2506 0.001-in.) radius tip, finished to 0.203 to 0.406 µm (8
2. Referenced Documents
to 16 µin.) rms.
2.1 ASTM Standards:
6.2 Drill Press, capable of rotating at 1760 rpm under a
B 209 Specification for Aluminum and Aluminum-Alloy
6.89-MPa (1000-psi) load.
2
Sheet and Plate
1
6.3 Drill Chuck, capacity 12.7-mm ( ⁄2-in.) end mill.
B 221 Specification for Aluminum-Alloy Extruded Bars,
6.4 Loading Device, capable of putting a pressure of 6.89
2
Rods, Wire, Profiles, and Tubes
MPa (1000 psi) on the dowel test pin.
2.2 ANSI Standard:
5
6.5 Force Gage, 1112 N (250-lbf) force.
3
B 46.1 Surface Texture
6.6 Drill Press Vise, capable of holding the test block in
position.
3. Terminology
6.7 Surface Texture Standards, conforming to American
3.1 Definitions of Terms Specific to This Standard:
National Standard for Surface Texture (ANSI B46.1).
6.8 Transparent Safety Shield.
1
This test method is under the jurisdiction of ASTM Committee D02 on 6.9 Thermocouple and Potentiometer, optional, for measur-
Petroleum Products and Lubricants and is the direct responsibility of Subcommittee
ing hole-bottom temperature.
D02.11 on Engineering Sciences of High Performance Fluids and Solids. ASTM
Committee F-7 on Aerospace Industry Methods maintains a continued interest in
this test method and will make use of it in the future.
Current edition approved Jan. 15, 1995. Published March 1995. Originally
4
published as D 3115 – 72. Last previous edition D 3115 – 92. Carbide tipped ball-end end mills are available and may be used when working
2
Annual Book of ASTM Standards, Vol 02.02. with metals harder than aluminum.
3 5
Available from American National Standards Institute, 11 W. 42nd St., 13th A gage manufactured by AMETEK, Inc., Testing Equipment Div., Box 288,
Floor, New York, NY 10036. Lansdale, PA 19446, has proven satisfactory.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

---------------------- Page: 1 ----------------------
D3115–95 (2000)
mm in
0.254 0.010
6.35 0.250
12.7 0.500
FIG. 1 Block, Drilled for Tests
6.10 Desiccator, maintained at 50 6 5 % relative humidity. 7.4 Test Lubricant, sufficient for at lea
...

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