ISO 13002 pdf download.Carbon fibre — Designation system for filament yarns
1 Scope
1.1 This International Standard establishes a system of designation for filament yarns of carbon fibre which may be used as the basis for specifications. 1.2 This designation system is applicable to filament yarns used for the reinforcement of polymer composites. It does not apply to discontinuous fibre products pyrolized in the form of staple yarns, woven fabrics, braids, knits, mats, etc. 1.3 The types of filament yarns are differentiated from each other by a classification system based on appropriate levels of the designatory properties: a) tensile modulus of elasticity; b) tensile strength; c) linear density. 1.4 It is not intended to imply that materials having the same designation give the same performance. This International Standard does not provide engineering data, performance data or data on processing conditions which may be required to specify a material for a particular application and/or method of processing. 1.5 In order to specify a filament yarn for a particular application or to ensure reproducible processing, additional requirements may be given in data block 3 (see clause 3).
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard 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 1 889:1 997, Reinforcement yarns — Determination of linear density . ISO 1 061 8:— 1 ) , Carbon fibre — Determination of tensile properties of resin-impregnated yarns.
3 Designation system
The designation system for filament yarns is based on the following standardized pattern:The designation consists of an optional description block, reading “Reinforcing fibre”, and an identity block comprising the International Standard number and an individual-item block. For unambiguous designation, the individual-item block is subdivided into three data blocks comprising the following information: – Data block 1 : Identification of the carbon fibres by information about the precursor yarn and product form (see 3.1 ). – Data block 2: Designatory properties (see 3.2). – Data block 3: For the purpose of specifications, a third data block may be containing additional information (see 3.3). The first character of the individual-item block shall be a hyphen. The data blocks shall be separated from each other by commas. If a data block is not used, this shall be indicated by doubling the separation sign, i.e. by two commas (,). 3.1 Data block 1 In this data block, after the hyphen, filament yarns are identified by the symbol “CF” for carbon fibres, followed by a hyphen and two code-letters giving information on the precursor yarns (A, V and P) and product form of filament yarns (C) as specified in table 1 .3.2 Data block 2 In this data block, the range of the tensile modulus of elasticity is represented by a three-figure code-number (see 3.2.1 ), the range of the tensile strength by a two-figure code-number (see 3.2.2) and the range of the linear density by a four-figure code-number (see 3.2.3). The code-numbers are separated from each other by hyphens.If a property value falls on or near a range limit value, the manufacturer shall state which range will designate the material. If subsequent individual test values lie on, or on either side of, the limit because of manufacturing tolerances, the designation is not affected. 3.2.1 Tensile modulus of elasticity Tensile modulus of elasticity shall be determined in accordance with ISO 1 061 8:—, Method B, which is the reference method for the calculation of the tensile modulus of carbon fibre. The possible values of tensile modulus of elasticity are represented by a three-figure code-number which corresponds to the actual value, in gigapascals (GPa) rounded as shown in table 2.