Standard Nearest ISO Designation International Equivalent Chemical Composition by Wt. % Conditions Cu% Sn% P% Pb% Zn% Others BS 1400 PB1 CuSn10P IS 28, DIN 1705 ISO 1338 ASTM B505 Rem 11 - 15.5 0.5 - 1.0 0.25 max 0.05 max Fe-0.10max Total Imp 0.60% max Unwrought BS 1400 PB2 CuSn 11P IS 28DIN 1705 ISO 1338 ASTM B505 NFA 53707 Rem 11 - 13.0 0.15 - 0.60 0.05 max 0.30 max Total Imp 0.2% max Unwrought BS 1400 CT 1 CuSn10 IS 28DIN 17662 / 17672, ISO 427-1983, JIS M 3270 C-5212, ASTM B139 Rem 9 - 11.0 0.15 max 0.25 max 0.05 max Fe-0.10Total Imp 0.80% max Unwrought Standard Mechanical Properties Applications UTS N/mm2 E% Y.S. Rp 0.2 N/mm2 Hardness HB BS 1400 PB1 360min 6min 170mm 90 Having high friction co-efficient Suitable when working at very high speed used for bearings, sockers, jackets, rings valve guides etc. BS 1400 PB2 310min 5min 170min 90 The utilization are similar to CuSn10p: bearing screw-wheels, worm-wheels, press bolts and nuts etc. BS 1400 CT 1 310 min 9 min - - Having good resistsnce to corrosion and abrasion so it is used in mechanics public works, high pressure pumps and it includes all above usage mentioned.