ISO 15165 pdf download – Fine ceramics (advanced ceramics, advanced technical ceramics)一 Classification system

ISO 15165 pdf download - Fine ceramics (advanced ceramics, advanced technical ceramics)一 Classification system

ISO 15165 pdf download – Fine ceramics (advanced ceramics, advanced technical ceramics)一 Classification system.
represents three property feati.%es of patticular relevance. These coding elements can be placed in any sequence without change of meaning.
A matenal with thermal oonductivity 40 W rn K1, dielectric loss tangent 5 10 at 10 MHz and flexural strength 600 MP& all at 400 °CD2O154U 444D3O1 54
The first two elements in lhi example are taken from the previous examples for single elements, and the third signifies the thermal conductivity classification.
5.5.5 Optionally, a supplementary statement’ may be added to the class1flcatlon code In order to Indicate the test method being used, a test method parameter, or other relevant attribute. eg. colour. The splementary statement is enclosed in parentheses (..) and immediately follows the Dnnnnnn code.
Taking the previous example and adig the test methods and the colour of the product gives:
D20l64(ISO 14704. 4-point bending, 40 nwn span) D609444(IEC 60672)D30154(EN 821-2 and specific heat) O4O34white)
5.6 Other classification fields
Whife not a defined part of this International Standard, additional classification fields may be used for further features associated with a product as required by the application of the classification. it it is desired to include such information, the classification fields should be constructed as agreed tables of codes in the form:
where X Is a unique and unambiguously Identifiable initial classification field character, and nnn Is a three-digit code from an agreed table. In this form, the additional classification elements remain unique and machine readable.
Examples of attributes which could be coded in this way include:
— date of coding manufacturer’s name
— country of or gin
6 Construction of a complete classification code
The classitat,on method described above may be used to assemble a ioV 01 any length to any level of detail appropriate to the end-use requirements. By using unique letter identifiers at the start of each classification element an individual element is easily (lentifiable in the combined code, which can then be constructed in any appropriate order of classdabon holes.
The complete code comprises the individual coding elements ii any agreed order, and shall be written as a continuous string ci characters with no gaps or punctuation.
ft is the pirpose of this International Standard to provide only a framework for classification rather than to prescribe exact formats of codes for specific end furictiore. The system is sufficiently flextle to cover many envisaged purposes by the appropriate agreed methods of selecting and ordersg the coding elements. However, it ie recommended that unless otherwise reouired, the short format chernetrv code is used.
The oIowing examples are given to illustrate the potential applications.
EXAMPLE I To survey markets or to compile trade statistics for fine csrancs, a trade organization might require oorvplabon ot sales data by its merrters by classifying thaW prockicts according to the ontenon:
application • sho.l4orin chemIcal character
The classification code would appear as
where XX defines the lorni 04 the product of nteresL and nnnn is a short form code for a pailicular chemistry category Trade returns could be demanded labelled in this way Thus, reduced tilania ttveadguides woiM be coded:
EXAMPLE 2 A research organizalion wishes to construct a data base based on brochures lot commerciat available materials. The chemical character is the princal identifier, and the available information from mariutacturers on chemical character and pnmiple property data might be converted into a mactime readable code:
In this case the application may not be relevant, while the data elements are key items aloveng differentiation between products. As many data elements as needed may be added in the data string. Alternatively, the chemical character string alone could be used to head a purposebuilt detailed property data base For example. a 95 % alumina oeraimc used as an electrical insulator with the property data defined in 5.5.3 above would be coded:
EXAMPLE 3 An organization requires a ceramic material with specific property attrtutes for a particular application. The chemical character is nat important. The product coiid be characterized using the oode
where the data classdicabon field is used to identity the broad property requirements. This code could be used to search a data base: e.g. a rotating shaft seal for a chemical plant pump requiring high strength (>200 MPa. room temperature implied), sliding wear resetande. acid re$etare arid resetance to w5ter quench hernial shock to 300 C cored be searched Or ueng the ce:
A371 D2015D702D802D3033.

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