Page 126 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

Table 2-38. Continued.
Miscellaneous Materials
Material Typical Description
Ni-resist Type I, 2, or 3 as recommended by International Nickel Co. for sen ice
conditions
Precipitation-hardening Acceptable types include ARMCO 17-7 PH and 17-4 PH. U.S. Steel
stainless steel Stainless W. Allegheny Ludlum AM 350 and AM 355
Stellite Overlay-weld deposit of '& inch minimum finished thickness of Haynes
Stellite AWS, Class RCoCr-C. RCoCr-A, orequal; solid cast stellite No.
3 or equal may be substituted for an overlayed pan
Colmonoy Sprayed or fused deposit of 0.010 inch or gas-weld deposit of Ya inch
minimum finished thickness of Wall-Colmonoy AWS, Class RNiCr-C or
equal
Carbon Suitrble mechanical cubon as recornmended by the mechanical seal
manufacturer for the service
Asbestos composition Long fiber with synthetic rubber binder suitable for 750 F. or spiral-
wound stainless steel and asbestos
Tetrafluoroethy lene (TFE) Teflon, Kel-F. or similar material
Tungsten carbide- I Kmnametd K-6 (cobalt binder) or equal (solid pan. not overlay)
Tungsten carbide-? Kmnametd K-801 (nickel binder) or qual (solid pan. not overlay)
Tungsten carbide-3 METCO 3lC. WALLEX 55, or equal (sprayed overlay; minimum s
finished thickness of 0.03inch) Y
2.
Fluomlastomer DuPont Viton or equal B
b
Alloy 20 ASTM A 2%. CN7M; Carpenter 20CB3; or qual 3
Nitrile (Buna-N) B.F. Goodrich HYCAR or equal 2
FFKM elastomer ASTM D 14 18. FFKM elastomer; DuPont Kalrez; or equal
Silicon carbide Carborundum KT or qual CI
0
Graphite foil Union Carbide Graphoil or qual \9