Leaded Bronze / Phosphor Bronze

LB2 / LB4 / PB2

BS1400 : LB4 is a leaded bronze LB4 containing approximately 9% lead and 5% tin. Excellent machining properties, very good wear resistance and medium to good corrosion resistance.
           
LB2 continuous cast leaded tin bronze with good plasticity which maximises strength.                   

PB2 has a higher lead content than PB1 which gives an excellent resistance to wear.

• Hard wearing bronze containing a small amount of phosphorus
• High fatigue resistance
• High tin content reduces the risk of corrosion
• Phosphorus increases wear resistance
• Commonly used in manufacture of bearings, sleeves, thrust washers and gears

Download our current material list

Material Stocklist.pdf

Chemical Properties

-
-
Min
Max
Cu
Copper
87
89.5
Sn
Tin
10.0
11.5
Pb
Lead
-
0.25
Zn
ZInc
-
0.05
Ni
Nickel
-
0.10
P
Phosphorous
-
1.0
Al
Aluminium
-
0.01
Fe
Iron
-
0.1
Sb
Antimony
-
0.05
Mn
Manganese
-
0.05
S
Sulphur
-
0.01
Si
Silicon
-
0.05
Si
Impurities
-
0.05

Mechanical Properties

-
Tensile strength N/mm2
Proof strength N/mm2
Elongation % minimum
Continuously Cast (B505)
LB2
LB4
PB2
170*
170*
170*
6
6
6
6
6
6
Centrifugally Cast (B271)
350
170*
4
Density (g/cmᶟ) Approx
-
8.7
-