1.1 This part of ISO 6402 establishes a system of designation for acrylonitrile-styrene-acrylate (ASA), acrylonitrile-(ethylene-propylene-diene)-styrene (AEPDS) and acrylonitrile-(chlorinated polyethylene)-styrene (ACS) moulding and extrusion materials, which may be used as the basis for specifications.
1.2 The types of ASA, AEPDS and ACS are differentiated from each other by a classification system based on appropriate levels of the designatory properties
a) Vicat softening temperature
b) melt volume-flow rate
c) Izod impact strength
d) flexural modulus
and on information about composition, intended application and/or method of processing, important properties, additives, colorants, fillers and reinforcing materials.
1.3 This part of ISO 6402 is applicable to all ASA, AEPDS and ACS materials consisting of a continuous phase mainly based on styrene-acrylonitrile copolymer (SAN) and a dispersed elastomeric phase mainly based on
acrylate (ASA materials),
ethylene-propylene-diene (EPDM) (AEPDS materials),
chlorinated polyethylene (ACS materials),
unincorporated or incorporated with other new components in such quantity as is specified in data block 1.
It applies to ASA, AEPDS and ACS materials ready for normal use in the form of powder, granules, pellets or chips, unmodified or modified by colorants, additives, fillers, etc.