•
Siding is made from roll formed 0.0172 inch (nominal) thick hot-dipped
galvanized steel complying with ASTM A653 and having minimum yield
and ultimate strength of 33,000 and 55,000 psi respectively.
•
Coating Characteristics: Dry film thickness limits: 4 mils nominal.
Gloss range: 10° to 15° on 60° photovolt meter
1. Adhesion of Film: (a). No blistering or loss of adhesion
after immersion in distilled boiling water for a minimum of 4 hours.
(b). Rollex PVC finish shall not be removed from cross hatched lines
scored 1/8" apart after application of No. 600 Scotch tape.
2. Flexibility: (a). mechanical tests at 77° F showed no fracture
of the coating at 10X magnification or any loss of adhesion when tested
with No. 600 Scotch tape. (b). Reverse Impact: Garner impact Tester-
5/8" Steel Ball, 120 inch lbs., 29 gauge steel. (c). Bending: OT 180°
bend, 29 gauge steel. (d). Draw: Tinius Olsen Test-1" steel ball,
0.3 inch uniform draw.
3. Elongation: Shall withstand a minimum elongation of 120%..
4. Tensile Strength: Rollex finish shall have a minimum of
2,200 lbs./square inch of cross sectional area when tested according
to ASTM D882-56T. |
5.
Abrasive Resistance:
Standard Tabor Abraser Test at 77° F, when using a CS No. 10 wheel
with 500 GM load, film loss shall be 1.0 mil per 2,500 cycles, maximum.
Typical 4 mil Rollex PVC finish shall withstand 10,000 cycles minimum.
6. Accelerate Tests: Humidity Cabinet: Rollex PVC finish panels
given a 90° bend and subjected to 100% Relative Humidity at 100°F
(+/- 5°F) for 1,000 hours showed no blistering, cracking, loss of
gloss or peeling and no softening after 24 hour recovery.
7.
Salt Spray: Rollex PVC finish, when subjected to a 5% salt solution
(ASTM B117), shall withstand 1,000 hours exposure without blistering
or loss of adhesion.
8.
Weatherometer: Rollex PVC tested in accordance with AStm D822-57T
after a period of 2,000 actual light hours with humidity control shall
show no cracking, crazing or loss of adhesion. The maximum allowable
chalk and color change shall be: (a). Chalking: No greater than ASTM
D659-44 No. 8 rating, based on a scale of 10 being excellent. (b).
Color Change: No greater than 5N.B.S. Units after removal of external
deposits.
9. Chemical Resistance: Rollex PVC finish will withstand total
or partial immersion in most acids at concentrations up to 40% and
all alkali and salt solutions. |
