scope:

This Standard specifies a method for determining the compressive properties of plastics (compressive strength, compressive modulus and compressive stress/strain curves) under defined conditions. A range of test speed is included.

The method applies to the following range of materials:

- rigid and semi-rigid (JIS K 6900) thermoplastic moulding and extrusion materials, including compounds filled and reinforced by e.g. short fibres, small rods, plates or granules in addition to unfilled types;

- rigid and semi-rigid thermoset moulding materials, including filled and reinforced compounds; rigid and semi -rigid thermoset sheet;

- thermoplastic liquid -crystal polymers.

In agreement with JIS K 7140-1 and JIS K 7140-2, this Standard applies to fibre- reinforced compounds with fibre lengths < 7.5 mm prior to processing.

The method is not normally suitable for use with materials reinforced by textile fibres (ISO 3597-3 and JIS K 7018), fibre-reinforced plastic composites and laminates (JIS K 7018), rigid cellular materials (JIS K 7132) or sandwich structures containing cellular material or rubber (JIS K 6254.).

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence is as follows.

ISO 604 : 2002 Plastics - Determination of compressive properties (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEC Guide 21-1.