British Standard PB1
Indian Standard
Nominal Composition 89/10/0/1
Tensile Strength (kg/mm2) 22-28
Elongation % on 2" 2-8
Brinell Hardness 60-100
Typical Uses

Bearings for diesel engines, electrical generators and rolling mills.

Name Phosphorous Bronze
BS PB1
Element Min Max
  % %
Copper Rem -
Tin 10.2 11.50
Zinc - 0.05
Lead - 0.25
Phosphorous 0.60 1.00
Nickel - 0.10
Iron - 0.10
Aluminium - 0.01
Manganese - 0.05
Antimony - 0.05
Iron + Arsenic - -
Impurities - 0.60