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Our range of high quality asbestos free friction materials are used on a broad range of safety critical brakes, clutches, tensioning and clamping devices where reliable and consistent performance is demanded.

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Friction Material Flammability Guide – ATEX Brake and Clutch Applications

The Trimat material flammability guide, provides information for designers of equipment that may be used in an explosive environment normally controlled by ATEX regulations. These flammability tests have been conducted in accordance with DIN Spec 22100-007, section 5.19 which is a fire test for brakes and friction clutches.

The table lists the Trimat materials tested and the results as a pass or fail. In addition, to assist with selection of a suitable material we have also shown the temperature measured at the end of each test run and the Dellta rise in temperature. Temperature was measured in two locations one using a thermocouple and one using infared. This information combined with thickness loss demonstrates that the material has been working as a brake material during the test procedure and generated wear debris.

Trimat recognises that the ATEX regulations present a challenge to brake and clutch manufacturers, hopefully this guide will provide some assistance to selecting suitable materials. If you require more information or have a specific project that you would like to discuss then please contact us.

Material Type Thickness (mm) at start of test Thickness (mm) at end of test Temperature (°C) at thermocouple after test Temperature (°C) measured by infared immediately after test ΔT Temperature (°C) at thermocouple after test ΔT Temperature (°C) measured by infared immediately after test Result Comments
1042
Rigid moulded, non metallic
20.03 19.84 63.00 80.33 42.00 59.33 Passed
1046
Rigid moulded, non metallic
20.36 19.84 129.25 163.50 106.50 140.75 Passed
1050
Rigid moulded, non metallic
19.06 18.09 238.00 263.67 210.33 236.00 Passed
1056
Rigid moulded, non metallic
TBA TBA TBA TBA TBA TBA Passed
1070
Rigid moulded, semi metallic
21.24 19.72 295.50 328.50 279.00 312.00 Unsuitable
1081
Rigid moulded, semi metallic
19.94 18.75 230.67 285.00 190.50 246.00 Passed Some sparks but no ignition
1130
Rigid moulded, non metallic
20.03 19.69 195.67 244.00 179.00 220.50 Passed
1185
Rigid moulded
19.95 19.72 216.33 232.33 196.00 212.00 Passed
2001
Roll formed flexible, non metallic
TBA TBA TBA TBA TBA TBA Passed
2215
Roll formed flexible, non metallic
TBA TBA TBA TBA TBA TBA Passed
2210
Roll formed flexible, non metallic
TBA TBA TBA TBA TBA TBA Passed
2221
Roll formed flexible, semi metallic
TBA TBA TBA TBA TBA TBA Passed Some sparks but no ignition
2740
Roll formed flexible, non metallic
TBA TBA TBA TBA TBA TBA Passed
CNB
Woven, non metallic
18.64 14.35 172.67 187.00 125.00 139.33 Passed Test stopped early due to wear
GBC
Woven, Brass wire
19.28 18.32 153.00 169.00 129.67 145.67 Passed
GZC
Woven, Zinc wire
TBA TBA TBA TBA TBA TBA Passed

Please note that the results are based on the materials being used on their designed brake surface.

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