INTERNATIONAL STANDARD IS0 674342 First edition 1 989 I l 01 Lubricants, industrial oi ls and related products (class L) Classification Part 1 2 Family Q (Heat transfer fluids) L ubrifian ts, hui les[.]
I S0 I N TERN ATI ON AL 674342 STAN DARD Fi rst edition 989-I Lu bri can ts, (cl ass Part L) oi l s and Cl assi fi cati on - related produ cts - 2: Fam i l y L u bri fi an Parti e i n du stri al l -01 Q (H eat ts, 72: h u i l es Fam i l l e transfer i n du stri el l es (Fl u i des fl u i ds) et produ its de transfert conn exes de fcl asse LI - Cl assi fi cati on - ch aleu r) Reference I S0 6743-1 nu mber : 989 (E) IS0 6743-1 2:1 989 (E) Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies) The work of preparing International Standards is normally carried out through IS0 technical committees Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization Draft International Standards adopted by the technical committees are circulated to the member bodies for approval before their acceptance as International Standards by the IS0 Council They are approved in accordance with IS0 procedures requiring at least 75 % approval by the member bodies voting International Standard IS0 67431 was prepared by Technical Committee lSO/TC 28, Petroleum products and lubricants IS0 6743 consists of the following parts, under the general title Lubricants, industrial oils and related products (class Ll - Classification : - Part 0: General - Part : Family A (Total loss s ystemsl - Part 2: Family F (Spindle bearings, bearings and associated clutches) - Part 3A: Family D (Compressors) - Part 38: Family D (Gas and refrigeration compressors) - Part 4: Family H (Hydraulic systems) - Part 5: Family T (Turbines) - Part 6: Family C (Gears) - Part 7: Family M (Metalworking) - Part 8: Family R (Temporary protection against corrosion) - Part 9: Family X (Greases) - Part 70: Family Y (Miscellaneous) - Part 7: Family P (Pneumatic tools) - Part 72: Family Q (Heat transfer fluids) - Part 73: Family G (Slideways) IS0 989 All rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher International Organization for Standardization Case postale 56 l CH-1 21 Geneve 20 e Switzerland Printed in Switzerland I N TERN ATI ON AL Lu bri can ts, (cl ass L) Part i n du stri al oi l s an d Cl assi fi cati on - part fam i l y Q (H eat tran sfer I S0 I S0 (heat 6743 establ i sh es transfer fl u i ds) L (Lu bri can ts, Th i s part of i n du stri al I S0 6743 the Al l oi l s shou l d detailed cl assi fi cati on produ cts and be l i sted rel ated read in of belong to produ cts) N orm ati ve Explan ati on The l i sh ed m n conj u n ction references fol l owi ng reference I S0 6743 were text, the Al l the ti m e reg i sters I S0 3448 of on l i sted of provi si on s th i s su bj ect part of val i d the to I S0 applyi ng bel ow cu rren tl y of wh i ch , provi si on s pu bl i cati on, are possi bi l i ty stan dards tai n tai n consti tu te standards based i n vesti gate the th i s At val i d agreem ents of standards in the of parti es encou raged m ost I nternati onal part recent I EC and of in di cated and are Each two l etters, N OTE - fam i l y, i e h as I ndu stri al l i qu i d to m n - - of of categories th i s category wh i ch The fam i l y of Q h as produ cts no is designated l etter for of h eat th e 6743-O produ cts : 981 , (cl ass LI Lu bri cants, - Cl assi fi cati on i ndu stri al I S0 - Part oi l s 0: estabfor the of its Any a sym bol si sti n g of a code categ ory transfer si g n i fi can ce by stitu te (Q) i den ti fi es fol l owi n g th e l etter, produ ct taken separ- own of of each vi scosi ty category grades can accordi n g be su ppl em ented to I S0 and G eneral by the 3448 3 I n the nated m ay in present a u ni form be designated abbrevi ated the cl assi fi cati on m anner in form , vi scosi ty com plete i e system , For L-QA grade in exam pl e, form , 220 produ cts i e I SO-L-QA I n both cases, accordan ce wi th vi scosi ty Detai led The detailed cl assi fi cati on rel ated cl assi fi cati on i s shown are a parti cu l ar cl assi fi cati on I SO been requ ired fam i l y together fi rst fl u i ds desi gnation addi tion an Standards l u bri can ts cl assi fi cati on the u sed to editi on s I S0 The i n di cates : 975, sym bols through th i s edi tions revi si on , 6743 M em bers of detailed defini ng appl i cati on s atel y, The by of wi th 6743-O produ cts fl u i ds) of cl ass : 989 (E) - Scope Th i s rel ated 6743-1 2: Fam i l y I S0 STAN DARD i n tabl e 220, the I S0 desi g - produ ct or in nu m ber 3448 I S0 6743-1 : 989 (E) Tabl e Code G en eral letter appl i cati on - Cl assi fi cati on M ore Parti cu l ar fl u i ds Produ ct specifi c appl i cati on *) of an d appl i cati on type M axi m u m Refi n ed m i n eral m easu red syn th eti c fl u i d tem peratu re stabi l i ty ci rcu it to tran sfer I SO-L requ i rem en ts H eat 300 Remarks appl i cati on s Open wi th OC