{"id":258740,"date":"2024-10-19T17:07:49","date_gmt":"2024-10-19T17:07:49","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-iso-49252020\/"},"modified":"2024-10-25T12:46:03","modified_gmt":"2024-10-25T12:46:03","slug":"bs-iso-49252020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-iso-49252020\/","title":{"rendered":"BS ISO 4925:2020"},"content":{"rendered":"

This document provides the specifications, requirements and test methods, for non-petroleum-based fluids used in road-vehicle hydraulic brake and clutch systems that are designed for use with such fluids and equipped with seals, cups or double-lipped type gland seals made of styrene-butadiene rubber (SBR) and ethylene-propylene elastomer (EPDM).<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nNational foreword <\/td>\n<\/tr>\n
6<\/td>\nForeword <\/td>\n<\/tr>\n
7<\/td>\nIntroduction <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
10<\/td>\n3 Terms and definitions
4 Materials
5 Specifications <\/td>\n<\/tr>\n
12<\/td>\n6 Test methods
6.1 Viscosity
6.1.1 General
6.1.2 Repeatability (single analyst)
6.1.3 Reproducibility (multi-laboratory) <\/td>\n<\/tr>\n
13<\/td>\n6.2 Equilibrium reflux boiling point (ERBP)
6.2.1 General
6.2.2 Preparation of apparatus
6.2.3 Test procedure
6.2.4 Repeatability (single analyst)
6.2.5 Reproducibility (multi-laboratory) <\/td>\n<\/tr>\n
14<\/td>\n6.2.6 Wet ERBP test <\/td>\n<\/tr>\n
17<\/td>\n6.3 pH
6.4 Fluid stability
6.4.1 High-temperature stability <\/td>\n<\/tr>\n
18<\/td>\n6.4.2 Chemical stability
6.5 Corrosion
6.5.1 Metal strip characteristics prior to testing
6.5.2 Preparation of joints <\/td>\n<\/tr>\n
19<\/td>\n6.5.3 Test procedure
6.6 Fluidity and appearance at low temperatures
6.6.1 At \u221240 \u00b0C for 144 h
6.6.2 At \u221250 \u00b0C for 6 h <\/td>\n<\/tr>\n
20<\/td>\n6.7 Water tolerance
6.7.1 At \u221240 \u00b0C for 22 h
6.7.2 At 60 \u00b0C for 22 h
6.8 Compatibility\/miscibility with ISO 4926 fluid
6.8.1 At \u221240 \u00b0C for 22 h
6.8.2 At 60 \u00b0C for 22 h
6.9 Resistance to oxidation <\/td>\n<\/tr>\n
21<\/td>\n6.10 Effect on rubber
6.10.1 Test procedures <\/td>\n<\/tr>\n
22<\/td>\n6.10.2 Repeatability (single analyst)
6.10.3 Reproducibility (multi-laboratory)
6.11 Reserve alkalinity according to ASTM D 1121 <\/td>\n<\/tr>\n
23<\/td>\nAnnex A (normative) ISO styrene-butadiene rubber (SBR) brake cups for testing brake fluid <\/td>\n<\/tr>\n
26<\/td>\nAnnex B (normative) Corrosion test strips <\/td>\n<\/tr>\n
27<\/td>\nAnnex C (informative) Corrosion strip assembly <\/td>\n<\/tr>\n
28<\/td>\nAnnex D (normative) Standard ethylene, propylene and diene (EPDM) terpolymer rubber slabstock <\/td>\n<\/tr>\n
30<\/td>\nAnnex E (normative) Triethylene glycol monomethyl ether (TEGME) brake fluid grade <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Road vehicles. Specification of non-petroleum-based brake fluids for hydraulic systems<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n34<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":258746,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2641],"product_tag":[],"class_list":{"0":"post-258740","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-bsi","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/258740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/258746"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=258740"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=258740"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=258740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}