Falex Miller Number Slurry Abrasivity Test Machine
ASTM Specifications : G-75
Features and specifications
The Falex Miller Number Slurry Abrasivity Test Machine can be used to develop data from which either the relative
abrasivity of any slurry (Miller Number), or the response of different materials to the abrasivity of different slurries
(SAR Number), can be determined. It meets the requirements of ASTM G75, "Test Method for Determination of Slurry
Abrasivity (Miller Number) and Slurry Abrasion Response of Materials (SAR Number)."
The "Miller Number" is an index of the relative abrasivity of slurries. Its primary purpose is to rank the abrasivity of
slurries in terms of the wear of a standard reference material. The wear damage on the standard wear block is worse
as the Miller Number gets higher. The SAR Number is an index of the relative abrasion response of materials as
tested in any particular slurry of interest. The SAR Number is a generalised form of the Miller Number applicable to
materials other than the reference material used for the Miller Number determination. A major purpose is to rank
construction materials for use in a system for pumping a particular slurry. It can also be used to rank the abrasivity of
various slurries against any selected construction material other than the reference material specified for a Miller
Number determination.
The relative effect of slurry abrasivity in both the Miller Number and the SAR Number is determined by using the
measured mass loss of a standard, shaped metal block, driven in a reciprocating motion by a rotating crank, riding in
the bottom of a tray containing the slurry. A direct load is applied to the block. For each test, the bottom of the tray is
equipped with a new piece of a sheet of Neoprene to act as a lap. The interior of the tray has a flat bottomed or
truncated "V" shape formed by the filler, that confines the slurry particles to the path taken by the wear block. At one
end of each stroke, the block is lifted off the lap by a cam action for sufficient time to allow fresh slurry material to
flow under the block. The block holder is made of plastic, as are the trays, so that electrolysis inherent in certain
slurries is minimised.
F-1579 Falex Miller Number Slurry Abrasivity Test Machine
220 V, 50 / 60 Hz. Includes:
Miller Number Computer Program Perpetual License
Machine with Motor
Electronic Predetermining Counter
Four-Trough Slurry Container
Eight Laps
Four 27% Chrome Iron Wear Blocks (can be used
repeatedly by refinishing )
1.5 lbs. Wear Test Sand
List of Miller Number Test Results
One Illustrated Procedure Manual
F-1579-10 High Temperature Option:
Heated Four-Trough Slurry Container with Temperature Control
System Maximum
operating temperature with water is 90°C.
1579-15 Lap, Neoprene Molded (Set of 4)
1579-16 Block Holder, Delrin
TEST SPECIMENS :
F-1579-50 Wear Block - 27% Chrome Iron.
ABRASIVES :
F-1579-72 AFS 50-70 Sand for wear testing, 50 lbs.
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