thickness of the cladding shall be 10 percent of the nominal total plate
thickness or 2 mm 1/16 inch, whichever is greater. The thickness of the
cladding shall not vary under the thickness specified by more than 2
percent of the nominal thickness of the clad plate. Plate finish shall be
sandblasted, pickled, or, blast-cleaned and pickled. Stainless steel plate
specified above in paragraph PLATE, SHEET, AND STRIP may be used in lieu of
clad plate at the option of the Contractor.
2.1.5.3
Bars and Shapes
Stainless steel bars and shapes shall conform to the following as specified
or shown:
a. ASTM A 276, UNS [S30400, S40500, or S41000 with a maximum carbon
content of 0.08 percent] [S21800], Condition A, hot-finished or cold-
finished, Class C.
b. ASTM A 564/A 564M, UNS S17400 or S45000, age-hardened heat
treatment condition, hot-finished or cold-finished, Class C.
2.1.5.4
Plates, Bars & Shapes for Roller & Track Systems
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NOTE: Rollers and track plates on gates and in gate
slots which are subjected to hydraulic loads from
water during operation of gates should be hardened
by heat treatment as specified below in subparagraph
GATE ROLLERS AND BOLTED TRACK PLATES. Hardened
track plates are not suitable for welding and should
be bolted in place. Track plates which are lightly
loaded, such as gate upstream track plates, should
conform to subparagraph WELDED SEAL PLATES AND BARS;
WELDED ROLLER GUIDE BARS; AND WELDED TRACK PLATES
below and be welded in place.
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a. Gate Rollers and Bolted Track Plates - ASTM A 564/A 564M, UNS
S17400 or S45000, age-hardened heat treated to obtain a Brinell
hardness range of 331 minimum to 401 maximum, hot-finished or
cold-finished, Class C. Heat treatment of rollers and plates shall not
commence until the heat treatment procedure and the test reports for
other required material tests are approved. After heat treating and
final machining, each roller and track plate shall be free of scale and
cracks, as determined by magnetic particle, florescent, or dye
penetrant inspection tests.
(1) Hardness Check Tests - Suitable 13 mm 1/2 inch thick samples
of the material from each heat shall be tested to determine the
hardness in both the solution-annealed and age-hardened
conditions. Where the oven-batch heat- treating process is used,
hardness check tests shall be performed on material of each heat
in each oven batch. Where a continuous heat-treating process is
used, three check tests shall be performed on material of each
heat: one on the first material through the process, one at the
middle of the run, and one on the last material through the
process.
b. Fasteners for Bolted Track Plates and Guide Bars - Bolting
materials shall conform to ASTM A 193/A 193M or ASTM A 320/A 320M,
SECTION 05502A
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