Technical Paper
Heavy Metal and Asbestiform Fiber Rules in the U.S. using the SAE J2975 and J866 Test Method2013-05-15
2013-36-0036
New rules in the states of California and Washington mandate the phase out of cadmium, copper, hexavalent chromium, lead, mercury, and asbestiform starting in 2014. These rules apply to most on-road vehicles with open brakes. The rules are similar in its end-goals (to minimize the environmental impact of heavy metals and asbestiform fibers on runoff waters and on air pollution). They are however different in key aspects regarding the timing, limits, and process to register the corresponding percent-by-weight of all formulations sold and installed in these particularstates. After a short background, the paper presents three key areas pertaining to the rules and its practical implications for the self-certification (declaration of conformity) process.
Standard
Friction Coefficient Identification and Environmental Marking System for Brake Linings2019-03-11
CURRENT
J866_201903
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661 Brake Lining Quality Test Procedure and SAE J2975 Measurement of Copper and other elements in Brake Friction Materials. NOTE: It is emphasized that this document does not establish friction requirements for brake linings, nor does it designate significant characteristics of brake linings which must be considered in overall brake performance. Due to other factors that include brake system design and operating environment, the friction codes obtained from this document cannot reliably be used to predict brake system performance.
Standard
FRICTION COEFFICIENT IDENTIFICATION SYSTEM FOR BRAKE LININGS1985-03-01
HISTORICAL
J866_198503
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661. Note: It is emphasized that this recommended practice does not establish friction requirements for brake linings, nor does it designate significant characteristics of brake linings which must be considered in overall brake performance. Due to other factors that include brake system design and operating environment, the friction coefficients obtained from this recommended practice can not reliably be used to predict brake system performance.
Standard
FRICTION IDENTIFICATION SYSTEM FOR BRAKE BLOCKS FOR COMMERCIAL VEHICLES1964-03-01
HISTORICAL
J866_196403
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to describe the initial friction characteristics only of brake blocks (see SAE J660, Brake Linings) for use on commercial vehicles. NOTE: It is emphasized that this recommended practice does not establish friction requirements for brake blocks, nor does it designate other significant block characteristics which must also be considered in overall brake performance. The basis for determining the friction coefficients for brake blocks are tests conducted in accordance with SAE J661, Brake Lining Quality Control Test Procedures.
Standard
Friction Coefficient Identification and Environmental Marking System for Brake Linings2012-07-16
HISTORICAL
J866_201207
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661 Brake Lining Quality Test Procedure and SAE J2975 Measurement of Copper and other elements in Brake Friction Materials. NOTE: It is emphasized that this document does not establish friction requirements for brake linings, nor does it designate significant characteristics of brake linings which must be considered in overall brake performance. Due to other factors that include brake system design and operating environment, the friction codes obtained from this document cannot reliably be used to predict brake system performance.
Standard
Friction Coefficient Identification and Environmental Marking System for Brake Linings2012-01-16
HISTORICAL
J866_201201
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661 Chase Test and SAE J2975 Measurement of Copper and other elements in Brake Friction Materials.
Standard
Friction Coefficient Identification System for Brake Linings2002-04-09
HISTORICAL
J866_200204
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to classify the friction coefficient of brake linings, based on data obtained from tests conducted in accordance with SAE J661.
Standard
Friction Identification System for Brake Linings and Brake Blocks for Motor Vehicles1966-09-01
HISTORICAL
J866A_196609
This SAE Recommended Practice is intended to provide a uniform means of identification which may be used to describe the initial friction characteristics of brake linings and brake blocks (see SAE J660) for use on motor vehicles. The basis for determining the friction coefficients for brake linings and brake blocks are tests conducted in accordance with SAE J661.
Magazine
Automotive Engineering 1985-02-011985-02-01
Magazine
S.A.E. Journal 1964-12-011964-12-01
