1、BRITISH STANDARD Plastics - S tyrene/acrylonitrile (SAN) moulding and extrusion materials Part 2. Preparation of test specimens and determination of properties The European Standard EN IS0 48942: 1999 has the status of a British Standard ICs 83.080.20 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERM
2、ITTED BY COPYRIGHT LAW BS EN IS0 489441999 Incolpomting (numbers the 23 IS0 Amendment No. 1 as BS EN IS0 4894-2: 1 999) BS EN IS0 4894-2:1999 10662 Committees responsible for this British Standard November 1999 Implementation of the European Standard The preparation of this British standard was entr
3、usted to Technid Committee Pl3, Styrene plastics, upon which the following bodies were representid BriM Piastics Federation British Telecommunications pic Federation of the Electronics Industry Institute of Materials Minktry of Defence This British standard, having been prepared under the direction
4、of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 March 1996 Q BSI 11-1999 Amendments issued since publication The foiiowing BI references relate to the work on this standard: Committee reference PRY33 Draft for comm
5、ent 91B8661 DC ISBN O 680 26563 8 I I l II lb2Libb9 0807882 T57 E BS EN IS0 4894-2:1999 National foreword This British Standard is the Engltsh language version of EN IS0 4894-2: 1999. It supemedes BS IS0 W21995 which is withdrawn and together with BS EN IS0 4894-1 supexsedes BS 4936.1987 which is wi
6、thdrawn. ?his l3ritish Standard is published under the direction of the Sector Board for Materials and Chemicals whose Technical Commiaee PRi3 has the responsibility to: - aid enquirem to understand the te - present to the responsible htematio N is the nitrogen content, expressed as a percentage by
7、mass; 3,79 is the ratio of the relative molecular masses of acrylonitrile (hCN) and nitre gen. NOTE 1 Alternatively, the percentage wykniuile am tentmey be determined by0 pyrv uctivity method. Annex ZA (normative) Normative references to international publications with their relevant European pubica
8、tions This hiropean stanml uicoiporartes by dated or imdated reference, provisions hm utherpublicatiom. These normative references anz citedatthe appropriate piaces m the text and the publications are listed-. For dated mfenmces, subsequent amendmenk3 to or revisions of any of these pubiicaons appy
9、to thls European standard oniy when incorporated in it by amendment or revision. For unated refmnces the latest edition af the pubiication referred to applies piMiutioa Yeu litle EN Yeu Is0 7bl lm mE(cs-Detenn.inatzonQftapemture of EN Iso 7b1 1996 Is0 752 1m PIastsCs-IktennQfmQf ENIso76-2 1996 Is0 1
10、78 1993 pLast4Cs-Det#mkbtmQf.p4md ENIS0178 1996 defledlon underload-part I: Gaernl test method depedion ecnder load- part 2: Rtics and ebmte 6 o BSI 11-1999 lb2qbb9 0807893 832 EN IS0 4894-2:1999 Pubcrtion Is0 179 YUr 1993 EN ENIS0179 Yeu 1996 Is0 291 1997 EN Is0 291 1997 Is0306 1994 ENIS0306 1996 E
11、N IS0 6n-1 EN Is0 627-2 1996 1996 IS0 627-1 IS0 627-2 1993 1993 Is0 8991 1993 ENIS08991 1996 Is0 2818 1994 EN Is0 2818 1996 IS0 3167 IS045893 1993 1996 EN IS0 3167 ENIS046893 1996 1996 Is08266 1990 ENIS08266 1996 ENIS010360 Is0 10360 1995 Is062 Is0 6274 1999 1997 ENIS062 ENIso627-4 1999 1997 Is0 113
12、3 1997 EN IS0 1133 1999 ISO4894-1 1997 EN IS0 4894-1 1999 8 BSI 11-1999 7 9 lb24bb9 0807894 779 m BS EN IS0 48942:1999 BSI 389 Chiswick High Road London w4 4AL BSI - British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the K view
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