Document rx8kxGeNqakw03BvV2o8a1VGG

MATERIAL SPECIFICATIONS '1. WHEELS - t 72-46-03 Ductile Iron 72.000 Psl Minimum Tensile strength 46.000 Psi Minltaum yield strength 3Z elongati.on in 2M Hardness 192-235 Brtnell maximum (3000 Kg Load) Heat treatment - normalized and tempered to required hardness 2. LININGS Folded and compressed Impregnated asbestos 'Asbestos yarn with soft non-ferrous wire core, woven into cloth, filled with heat resisting compound, stacked, and finished with pressure and heat. Working face is to be ground." Min. coefficient of friction =* .3 Maximum rubbing speed * 7500 FPM Maximum pressure =* 75 Psi Min. Life - 500,000 foot pounds required to wear .001 cu. inch, when applied intermittently at 60 Psi against a steel wheel with face hardened to Rockwell C40 Min. and operating at 160C and at 3000 FPM rubbing speed. The following manufacturer's types have been found to meet the above specification: Johns-Manville #600 Raybestos - Manhatten #G1000 `Asbestos Mfg. Co. #8266 CMb'