British Standard
PB4
Indian Standard
Nominal Composition
90.50/9.5
Tensile Strength (kg/mm2)
19-26
Elongation % on 2"
3-13
Brinell Hardness
70-95
Typical Uses
Bearings for diesel engines, electrical generators and rolling mills.
Name
Phosphorous Bronze
BS
PB4
Element
Min
Max
%
%
Copper
Rem
-
Tin
9.70
-
Zinc
-
0.50
Lead
-
0.75
Phosphorous
0.50
-
Nickel
-
0.50
Iron
-
-
Aluminium
-
-
Manganese
-
-
Antimony
-
-
Iron + Arsenic
-
-
Impurities
-
0.50