1 Scope

1.1 This part of ISO 527 specifies the test conditions for determining the tensile properties of moulding and extrusion plastics, based upon the general principles given in ISO 527-1.

1.2 The methods are selectively suitable for use with the following range of materials:

— rigid and semirigid thermoplastics moulding, extrusion and cast materials, including compounds filled and reinforced by e.g. short fibres, small rods, plates or granules but excluding textile fibres (see ISO 527-4 and ISO 527-5) in addition to unfilled types;

— rigid and semirigid thermosetting moulding and cast materials, including filled and

reinforced compounds but excluding textile fibres as reinforcement (see ISO 527-4 and ISO 527-5);

— thermotropic liquid crystal polymers.The methods are not suitable for use with materials

reinforced by textile fibres (see ISO 527-4 and ISO 527-5), with rigid cellular materials or sandwich structures containing cellular material.

1.3 The methods are applied using specimens which may be either moulded to the chosen dimensions or machined, cut or punched from injection- or compression-moulded plates. The multipurpose test specimen is preferred (see ISO 3167:1993, Plastics — Multipurpose test specimens).

2 Normative references

The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 527. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this part of ISO 527 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.

ISO 37:1977, Rubber, vulcanized — Determination of tensile stress-strain properties.

ISO 293:1986, Plastics — Compression moulding test specimens of thermoplastic materials.

ISO 294:—, Plastics — Injection moulding of test specimens of thermoplastic materials1).

ISO 295:1991, Plastics — Compression moulding of test specimens of thermosetting materials.

ISO 527-1:1993, Plastics — Determination of tensile properties — Part 1: General principles.

ISO 1926:1979, Cellular plastics — Determination of tensile properties of rigid materials.

ISO 2818:—, Plastics — Preparation of test specimens by machining2)