Search Results

Standard

Thermal Transport Properties Germane to Friction Materials and Brakes

2011-03-08

HISTORICAL

J2581_201103

This SAE Information report defines the thermal transport properties important in the assessment of heat management capability of brake lining, shoe, disc and drum materials. The report discusses thermal diffusivity, specific heat capacity, thermal conductivity and thermal expansion. Measurement techniques for the appropriate ASTM standards are identified. The thermal transport properties discussed are material sample properties, not the properties of entire components such as pad assemblies.

Standard

Thermal Transport Properties Germane to Friction Materials and Brakes

2017-02-02

CURRENT

J2581_201702

This SAE Information report defines the thermal transport properties important in the assessment of heat management capability of brake lining, shoe, disc and drum materials. The report discusses thermal diffusivity, specific heat capacity, thermal conductivity and thermal expansion. Measurement techniques for the appropriate ASTM standards are identified. The thermal transport properties discussed are material sample properties, not the properties of entire components such as pad assemblies.

Standard

Thermal Transport Properties Germane to Friction Materials and Brakes

2003-09-05

HISTORICAL

J2581_200309

This SAE Information report defines the thermal transport properties important in the assessment of heat management capability of brake lining, shoe, disc and drum materials. The report discusses thermal diffusivity, specific heat capacity, thermal conductivity and thermal expansion. Measurement techniques for the appropriate ASTM standards are identified. The thermal transport properties discussed are material sample properties, not the properties of entire components such as pad assemblies.

Standard

DETERMINING THE SPECIFIC GRAVITY OF BRAKE LININGS

1969-02-01

HISTORICAL

J380_196902

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. Specific gravity alone shows nothing about a lining’s ability to develop friction or to resist fade when used as a friction element in brakes. Specific gravity varies with the formulation of the lining. The specific gravity of sintered metal powder linings, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376 “Density of Sintered Metal Friction Material” (latest revision).1 The specific gravity and the range of specific gravity are peculiar to each formulation and, therefore, the acceptable values or range must be established for each formulation by the manufacturer.

Standard

SPECIFIC GRAVITY OF BRAKE LINING

1993-02-01

HISTORICAL

J380_199302

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. Specific gravity alone shows nothing about a lining's ability to develop friction or to resist fade when used as a friction element in brakes. Specific gravity varies with the formulation of the lining. The specific gravity of sintered metal powder linings, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376. The specific gravity and the range of specific gravity are peculiar to each formulation and, therefore, the acceptable values or range must be established for each formulation by the manufacturer.

Standard

SPECIFIC GRAVITY OF BRAKE LINING

1971-08-01

HISTORICAL

J380_197108

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. Specific gravity alone shows nothing about a lining’s ability to develop friction or to resist fade when used as a friction element in brakes. Specific gravity varies with the formulation of the lining. The specific gravity of sintered metal powder linings, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376, ‘Density of Sintered Metal Friction Material’ (latest revision).1 The specific gravity and the range of specific gravity are peculiar to each formulation and, therefore, the acceptable values or range must be established for each formulation by the manufacturer.

Standard

Specific Gravity of Friction Material

2017-02-02

CURRENT

J380_201702

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. The specific gravity and the range of specific gravity are peculiar to each formulation and, therefore, the acceptable values or range must be established for each formulation by the manufacturer. Specific gravity alone shows nothing about a materials in use performance. The specific gravity of sintered metal powder friction materials, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376.

Standard

Specific Gravity of Friction Material

2009-08-26

HISTORICAL

J380_200908

Specific gravity is a nondestructive test used as a quality control check of the consistency of formulation and processing of brake lining. The specific gravity and the range of specific gravity are peculiar to each formulation and, therefore, the acceptable values or range must be established for each formulation by the manufacturer. Specific gravity alone shows nothing about a materials in use performance. The specific gravity of sintered metal powder friction materials, particularly those which have steel backing members, is usually determined somewhat differently. Reference ASTM B 376.

Standard

Hardness of Brake Lining

2015-08-27

CURRENT

J2654_201508

Hardness measurements are used as a quality control check of the consistency of formulation and processing of brake linings. This hardness method is nondestructive. NOTE—This method is not a measure of friction level. The hardness and the range of hardness are characteristic of each formulation; therefore, the acceptable values and ranges must be established for each formulation and may be affected by processing. NOTE—The hardness of sintered powder metal lining is usually determined with Rockwell superficial hardness equipment. (See ASTM B 347)

Standard

Hardness of Brake Lining

2004-08-16

HISTORICAL

J2654_200408

Hardness measurements are used as a quality control check of the consistency of formulation and processing of brake linings. This hardness method is nondestructive. The hardness and the range of hardness are characteristic of each formulation; therefore, the acceptable values and ranges must be established for each formulation and may be affected by processing.

Standard

Hardness of Brake Lining

2012-04-19

HISTORICAL

J2654_201204

Hardness measurements are used as a quality control check of the consistency of formulation and processing of brake linings. This hardness method is nondestructive. The hardness and the range of hardness are characteristic of each formulation; therefore, the acceptable values and ranges must be established for each formulation and may be affected by processing.

Standard

TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS

1962-11-01

HISTORICAL

J840_196211

This SAE Recommended Practice covers equipment and procedures for qualification and quality control tests of brake shoe and lining adhesives and bonds.

Standard

TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS

1982-08-01

HISTORICAL

J840_198208

This SAE Recommended Practice covers equipment and procedures for qualification of bonded brake shoe and lining assemblies and for quality control on materials and processes used in their manufacture.

Standard

Test Procedures for Brake Shoe and Lining Bonds

1998-06-01

HISTORICAL

J840_199806

This SAE Recommended Practices covers equipment and procedures for qualification of bonded or integrally molded drum and disc shoe and lining assemblies. It also provides some short, semi-quantitative test procedures for checking bonding or molding process control.

Standard

TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS

1968-01-01

HISTORICAL

J840B_196801

This SAE Recommended Practice covers equipment and procedures for qualification of bonded brake shoe and lining assemblies and for quality control on materials and processes used in their manufacture.

Standard

TEST PROCEDURES FOR BRAKE SHOE AND LINING ADHESIVES AND BONDS

1971-05-01

HISTORICAL

J840C_197105

This SAE Recommended Practice covers equipment and procedures for qualification of bonded brake shoe and lining assemblies and for quality control on materials and processes used in their manufacture.

Standard

Road Vehicles—Friction Materials—Elastic Properties Measurements

2009-01-20

HISTORICAL

J2725_200901

This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements.

Standard

Road Vehicles - Friction Materials - Elastic Properties Measurements

2023-04-21

CURRENT

J2725_202304

This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements. Measurement methods are also described for measurement of the out-of-plane modulus as a function of pre-load as well as the measurement of engineering constants as a function of temperature. Finally, methods are formulated to produce all engineering constants as a function of pre-load and temperature.

Standard

Road Vehicles - Friction Materials - Elastic Properties Measurements

2017-09-29

HISTORICAL

J2725_201709

This SAE Standard specifies a method for testing and measuring elastic constants in friction materials by precise ultrasonic velocity measurements. Measurement methods are also described for measurement of the out-of-plane modulus as a function of pre-load as well as the measurement of engineering constants as a function of temperature. Finally, methods are formulated to produce all engineering constants as a function of pre-load and temperature.

Standard

Desorption of Brake Friction Materials

2023-05-10

CURRENT

J3281_202305

This SAE Recommended Practice specifies a method to reduce and stabilize the moisture of products containing brake friction material (disc brake pads, drum brake shoes, friction blocks) so the parts are conditioned and maintained in a stable low moisture state.