Typical Uses: Pressure tight bearings, bushes, pumps and pump fittings, valves, valve bodies, and valve guides under corrosive marine conditions.
British Standard G2
Indian Standard: Grade II
Nominal Composition: 88 / 8 / 4
Tensile Strength (kg/mm2): 25 - 32
Elongation % on 2": 15 - 25
Brinell Hardness: 70 - 90
Typical Uses: Pressure tight bearings, bushes, pumps and pump fittings, valves, valve bodies, and valve guides under corrosive marine conditions.
Name
Gun Metal
BS
G1
G3
LG1
LG2
LG4
Element
Min %
Max %
Min %
Max %
Min %
Max %
Min %
Max %
Min %
Max %
Copper
Rem
Rem
Rem
Rem
Rem.
Tin
9.7
10.5
6.5
7.5
2
3.5
4
6
6
8
Zinc
1.75
2.75
1.75
3
7.5
9.5
4
6
1.7
3.2
Lead
1.5
0.1
0.5
4
6
4
6
2.7
3.5
Phosphorous
0.02
0.02
0.02
0.02
Nickel
1
5.25
5.75
2
2
2
Lead Bronze
British Standard: LB1
Indian Standard
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 & for unlined bearings under poor lubrication conditions
Name
Aluminium Bronze
BS
AB1
AB2
Element
Min
Max
Min
Max
%
%
%
%
Copper
Rem
-
Rem
-
Tin
0.1
0.1
Zinc
0.5
0.5
Lead
0.03
0.03
Phosphorous
Nickel
1
4
5.5
Iron
1.5
3.5
4
5.5
Aluminium
8.7
10.5
8.8
10
Maganese
1
3
Antimony
Iron+Arsenic
Antimony
Silicon
0.2
0.1
Bismuth
0.05
Maganesium
0.05
Sulphur Nicbium
Impurities
0.3
0.2
Phosphor Bronze
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 aero engines, diesel engines, electrical generators and rolling mills.
British Standard: PB2 Indian Standard
Nominal Composition: 88/12
Tensile Strength (kg/mm2): 22-31
Elongation % on 2": 5-15
Brinell Hardness: 75-110
Typical Uses: Gear and worn wheels
British Standard: PB3
Indian Standard:
Nominal Composition: 90/10
Tensile Strength (kg/mm2): 23-31
Elongation % on 2": 10-20
Brinell Hardness: 70-90
Typical Uses: Pressure vessels, pump body castings and impellers for chemical plants
British Standard: PB4 Indian Standard:
Nominal Composition: 90.5 / 9.5
Tensile Strength (kg/mm2): 19-26
Elongation % on 2": 3-12
Brinell Hardness: 70-95
Typical Uses: Bearings for aero engines, diesel engines, electrical generators and rolling mills.
Name
Phosphor Bronze
BS
LPB1
PB1
PB2
PB4
Element
Min%
Max%
Min%
Max%
Min%
Max%
Min%
Max%
Copper
Rem
Rem
Rem
Rem
Tin
6.5
8.5
10.2
11.5
11.2
13
9.7
Zinc
2
0.05
0.3
0.5
Bronze
• 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 aero engines, diesel engines, electrical generators and rolling mills.
Brass
British Standard SCB1 Indian Standard: Grade I
Nominal Composition: 75/25
Tensile Strength (kg/mm2): 17-20
Elongation % on 2": 20-40
Brinell Hardness: 45-60
Typical Uses: Valves, cocks, plumbing fittings, hardware and ornamental castings
British Standard SCB2 Indian Standard: Grade II
Nominal Composition: 70/30
Tensile Strength (kg/mm2): 17-20
Elongation % on 2": 12-25
Brinell Hardness: 45-65
Typical Uses: Marine fittings, castings for the electrical trade, brush holders
British Standard SCB3 Indian Standard : Grade III
Nominal Composition: 65/35
Tensile Strength (kg/mm2): 18-22
Elongation % on 2": 12-30
Brinell Hardness: 45-65
Typical Uses: Pipe fittings, gas fittings, door and furniture fittings, switchgear brush holders
British Standard SCB4 Indian Standard
Nominal Composition: 60/40
Tensile Strength (kg/mm2): 25-31
Elongation % on 2": 20-40
Brinell Hardness: 50-75
Typical Uses: Pump bodies, bolts, nuts, end plates for heat exchange equipment and small machine parts
British Standard SCB5 Indian Standard
Nominal Composition: 90/10
Tensile Strength (kg/mm2): 18-22
Elongation % on 2": 20-40
Brinell Hardness: 45-65
Typical Uses: Flanges, end plates and fittings for marine applications
British Standard SCB6 Indian Standard
Nominal Composition: 85/15
Tensile Strength (kg/mm2): 17-18
Elongation % on 2": 20-40
Brinell Hardness: 45-60
Typical Uses: Flanges, end plates, fittings for marine applications and imitation jewellery
Aluminium Bronze
British Standard LB1 Indian Standard
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
Aluminium Bronze
BS
AB1
AB2
Element
Min
Max
Min
Max
%
%
%
%
Copper
Rem
-
Rem
-
Tin
0.1
0.1
Zinc
0.5
0.5
Lead
0.03
0.03
Phosphorous
Nickel
1
4
5.5
Iron
1.5
3.5
4
5.5
Aluminium
8.7
10.5
8.8
10
Maganese
1
3
Antimony
Iron+Arsenic
Antimony
Silicon
0.2
0.1
Bismuth
0.05
Maganesium
0.05
Sulphur Nicbium
Impurities
0.3
0.2
Casting pure copper is extremely difficult since it may result in surface cracking, porosity problems and the formation of internal cavities. The casting characteristics of copper can be improved adding small amount of other metals including beryllium, silicon, nickel, tin, zinc, chromium and silver.
Cast copper alloys are used for a wide variety of application such as bearings, bushings, gears, fittings, valve bodies and miscellaneous components for the chemical processing industry. These alloys are poured into many types of castings such as sand, shell, permanent mould, chemical sand, centrifugal, and die casting.
Copper alloy casting have high wear qualities when subjected to metal-to-metal contact, machinability, thermal and electrical conductivity, appearance, and corrosion resistance.
We are equipped to manufacture any components in Aluminum or Aluminium Bronze Alloys .
We have our own unit making Aluminium bronze castings Aluminum castings casting parts and cast components fittings, Our Aluminium foundry Bronze foundries can handle up to 100 kg's of Aluminium casting parts
bronze castings Parts components and fitting.
