ASTM B533-85 pdf free.Standard Test Method for Peel Strength of Metal Electroplated Plastics.
Place the plaque in the holding fixture with the tab endfacing out. Locate the plaque so that the strip to be tested iscentered over the centerline of the fixture.Clamp the tab in the jaws of the movable crossarm ofthe testing machine.Separate the strip from the plaque at a speed of 25±3mm/min, and continuously record the force.Repeat the test using the other strip on the plaque.9.5.6 If a strip tears during separation, discontinue the test.The readings obtained up to the point of tearing may be usedif at least 25 mm of the strip were separated before the tear.9.6 Procedure B:
Restrain the plaque in a way that permits separatingthe strip.Attach the tab to the spring-loaded tester.Separate the strip from the plaque at an angle of90  5° to the plaque and at a rate of 25 3 mm/min.During the separation the force on the indicator willrise to peak values and fall back. Record the peak values.Repeat the test using the other strip on the plaque.If a strip tears during separation, discontinue the test.The readings obtained up to the point of tearing may be usedif at least 25 mm of the strip were peeled before the tear.Repeat the peel test with a second plaque.Examine the underside of the peeled strip and the baredarea of the plaque and determine whether the separationoccurred in the surface layers of the plaque (cohesive failure)or at the interface (adhesive failure). Plastic adhering to theunderside of the strip is not always apparent to the naked eye,and therefore should be verified microscopically.
Remove any plastic from the strip by means of a suitablesolvent. Acetone, for example, will remove ABS.Measure thethickness of the strip in several locations using a ball microme-ter that can be read to the nearest 1 um. (A micrometer thatreads in inches may be used if it can be read to the nearest0.0001 in., 0.0001 in.= 2.5 um.) Calculate the arithmetic mean ofthe highest and the lowest forces that were recorded for eachstrip. Calculate the arithmetic mean of the four pull tests (twostrips on two plaques).If the testing machine indicates theforce in units other than newtons，convert the values tonewtons.
Peel,Calculate the arithmetic mean ofthe recorded peak values. If the tester indicates the force inunits other than newtons, convert the values to newtons. Calculate the arithmetic mean thickness ofeach strip.Calculate the arithmetic mean thickness of the fourstrips (two strips on two plaques).ASTM B533 pdf download.ASTM B533 pdf download.