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The majority of the brake linings utilized depend on metal fiber reinforced phenolic resin, which is a composite of 15-20 constituents and is generally called semi metallic brakes. In practice, asbestos, antimony, and their modified version of organic composite brake materials are used which possess good strength, resistance to temperature, chemicals and wear. In the present work, mechanical and dry sliding wear conduct of non-asbestos natural (NAO) friction composites in particular; antimony and SiC-I-Cu filled phenol formaldehyde (PF) were contemplated adhering to the ASTM guidelines. The tribological behavior was studied under dry sliding conditions using a pin-on-disc apparatus.