BS ISO 17832:2018 pdf download

BS ISO 17832:2018 pdf download.Non-parallel steel wire and cords for tyre reinforcement
1 Scope
This document specifies the definition and requirements of non-parallel steel wire and cords for tyre reinforcement.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2859-1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-1, Sampling procedures for inspection by variables — Part 1: Specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection for a single quality characteristic and a single AQL
ISO 3951-2, Sampling procedures for inspection by variables — Part 2: General specification for single sampling plans indexed by acceptance quality limit (AQL) for lot-by-lot inspection of independent quality characteristics
ISO 3951-3, Sampling procedures for inspection by variables — Part 3: Double sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
ISO 3951-5, Sampling procedures for inspection by variables — Part 5: Sequential sampling plans indexed by acceptance quality limit (AQL) for inspection by variables (known standard deviation)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1 filament
metal fibre with a metallic alloy coating used as an individual element in a strand (3.2) or cord (3.3)
3.2 strand
group of filaments (3.1) combined together to form a unit product for further processing
3.3 cord
formed structure composed of two or more filaments (3.1) when used as an end product, or a combination of strands (3.2) or filaments and strands
3.3.1 single-strand cord
cord (3.3) formed by twisting two or more filaments (3.1) together
3.3.2 M+N type cord
cord (3.3) formed by twisting a number of non-concentric filaments (3.1) around a number of parallel filaments
Note 1 to entry: The cross-section is not round and varies along the length.
3.3.3 layer cord
cord (3.3) formed by adding layers around a core
Note 1 to entry: The layers can be filaments or strands.
3.3.4 multi-strand cord
cord (3.3) formed by twisting two or more strands (3.2) together
3.4 wrap
filament (3.1) wound helically around a steel cord (3.1)
3.5 direction of lay
helical disposition of the components of a strand (3.2) or cord
Note 1 to entry: The strand or cord has an “S” or left-hand lay, when held vertically, if the spirals around the central axis of the strand or cord conform in direction of slope to the central portion of the letter “S”.
Note 2 to entry: The strand or cord has a “Z” or right-hand lay if the spirals conform in direction of slope to the central portion of slope of the letter “Z”.
3.6 length of lay
axial distance required to make a 360° revolution of any element in a strand (3.2) or in a cord (3.3)
Note 1 to entry: The length of lay is expressed in millimetres.