British Standard LB1
Indian Standard LTB4
Nominal Composition 76/9/0/15
Tensile Strength (kg/mm2) 17-23
Elongation % on 2" 4-10
Brinell Hardness 50-70
Typical Uses

Bearings in mining machinery in corrosive water conditions and for unlined bearings under poor lubrication conditions

Name Lead Bronze
BS LB1
Element Min Max
  % %
Copper Rem -
Tin 8.00 10.00
Zinc - 1.00
Lead 13.50 16.50
Phosphorous - 0.10
Nickel - 2.00
Iron - -
Aluminium - -
Manganese - -
Antimony - 0.50
Iron + Arsenic - -
Impurities - 0.30