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Bronze LG2

 

PB1

 

Bronze LG2 Leaded gunmetal is the most widely used casting alloy, utilising good corrosion resistance with modest strength and excellent castability.

LG2 is the most widely used of the leaded gunmetals. It is a medium-hard material with soft soldering properties and a good resistance to seawater.

 

 

 

 

LG2 is suitable for the following uses…

  • Normally stressed pump castings
  • Valve seating rings
  • Some sliding bearings
  • Water pump impellers
  • Hose couplings

 

LG2 is available from us in round bar and hollows in the following sizes…

 

Round bar: from ½” dia – 12” dia

 

Hollows: From 1”OD – 16” OD 

 

 

 

 

Chemical & Physical Properties

 

Typical Chemical Composition

ElementsMin %Max %
Al0.005
CuRemainder
Fe0.30
Fe + As + Sb0.50
Ni1.0
P0.05
Pb4.06.0
S0.08
Sb0.25
Si0.005
Sn4.06.0
Zn4.06.0

Typical Mechanical Properties

Property/unitConditionTempMinMax
0.2% Proof Stress (N/mm2)Sand CastRT100
Tensile Strength (N/mm2)Sand CastRT200
Elongation in 5.65Cross Section AreaSand CastRT13
Brinell Hardness (HB)Sand CastRT66
0.2% Proof Stress (N/mm2)Chill CastRT110
Tensile Strength (N/mm2)Chill CastRT200
Elongation in 5.65Cross Sectional Area %Chill CastRT6
Brinell Hardness (HB)Chill CastRT80
0.2% Proof Stress (N/mm2)ContinuousRT100
Tensile Strength (N/mm2)ContinuousRT270
Elongation in 5.65Cross sectional Area %ContinuousRT13
Brinell Hardness (HB)ContinuousRT75
0.2% Proof Stress (N/mm2)CentrifugalRT110
Tensile Strength (N/mm2)CentrifugalRT220
Elongation in 5.65 Cross sectional AreaCentrifugalRT8
Brinell Hardness (HB)CentrifugalRT80

Tolerances

 

OD Up to and including 4” + 1/32” – 0

Above 4” + 1/16 – 0

Above 12” + 3mm – 0

 

ID up to and including 4” – 1/32” + 0

Above 4” – 1/16 + 0

Above 12” – 3mm + 0

 

 

LG2 STOCK RANGE

 

 

 

 

 

 

 

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