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Bronze Products

Krishna Copper Private Limited

Commercial Bronze

GRADE : - ASTM B36, C31400, C22000

Commercial Bronze, also known as Leaded Commercial Bronze, It HAS excellent resistance to stress-corrosion cracking as well as dezincification makes it suitable as an engineering alloy, being widely used for ammunition components and applications requiring outdoor exposure. Its strength exceeds Gilding, 95% - 210 alloys.


Applications:


Chemical Composition :
Cu Fe Pb Zn Ni
C31400 87.5 – 90.5 0.1 1.3-2.5 Rem. 0.7
Fabrication properties
FORGING
EXTRUSION
HOT ROLL Poor
COLD ROLL Good

Available Forms:
Flats, Rods, Ingots

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Krishna Copper Private Limited

Phosphor Bronze (PB1/PB2/PB3/PB4)

GRADE : - ASTM B139, ASTM B103, c51000, c52100, c 52400, c53400, c54400.

Phosphor bronze is noted for its resilience and fatigue endurance. In addition to its resilience, phosphor bronze offers a machinability of 80. It is adapted to all forms of cold workability, along with being rugged and durable in severe service.


Applications:
Bridge Bearing Plates, Switch Parts, Electromechanical Spring Components, Resistance Wire, Electrical Flexing Contact Blades, Electrical , Connectors, Electronic Connectors, Wire Brushes, Electronic and Precision Instrument Parts, Fuse Clips, Lock Washers, Fasteners, Cotter Pins, Bellows, Textile Machinery, Perforated Sheets, Chemical Hardware, Truss Wire, Springs, Sleeve Bushings, Diaphragms, Clutch Disks, Bourdon Tubes, Beater Bar, Welding Rods, Pressure Responsive Elements.

Chemical Composition :
Grade 1 Grade 2 Grade 3 Grade 4
Elements Min.% Max.% Min.% Max.% Min.% Max.% Min.% Max.%
Tin 6.0 8.0 10.0   6.5 8.5 9.0 11.0
Phosphorus 0.3 0.5 0.5   0.3   0.15  
Lead - 0.25 - 0.25 2 5 - 0.25
Zinc - 0.5 - 0.05 - 2 - 0.05
Silicon - 0.02 - 0.02 - - - -
Iron - 0.3 - 0.1 - - - -
Aluminium - 0.01 - 0.01 - - - -
Antimony - 0.1 - - - - - -
Nickel - 0.7 - 0.1 - 1 - 0.25
Total Impurities - 1.2 - 0.6 - 0.5 - 0.8
Copper Remainder Remainder Remainder Remainder

GOOD FAIR NOT RECOMMENDED
FORGING ---
EXTRUSION ---
HOT ROLL Poor
COLD ROLL Good

Available Forms:
Strips, Foils, Sheets/Plates, Rods, Ingots

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Krishna Copper Private Limited

Aluminum Bronze (AB1 /AB2)

GRADE :- ASTM B171, ASTM B169, ASTM B150, ASTM B505, ASTM B271, AMS 4871, AMS 4873 / C61000 / C61300 / C61400 / C61800 / C62300 / C62400 / C62500 / C63400 / C95200 / C95400 / C95900

Aluminum Bronze: C614, C630, C642, C954, C955 and C959. Aluminum bronze is the highest strength standard copper based alloy. Aluminum in conjunction with iron and nickel in C955 acts as a strengthener in these alloys. Farmer’s continually supplies aluminum bronze copper alloys in plate, sheet, and bar. All aluminum bronzes can be heat treated, thereby increasing their strength. Aluminum bronze alloys have high strength, hardness and corrosion resistance, as well as toughness and good wear resistance.


Applications:
Decorative Applications, Bolts, Tie Rods, Welding Wire, Shafts, Pump Parts, Overlay on Steel for Wearing Surface

Chemical Composition :
AB1 AB2
Elements Min.% Max.% Min.% Max.%
Aluminium 8.5 10.5 8.8 10
Iron 1.5 3.5 4.0 5.5
Manganese - 1.0 - 1.5
Nickel - 1.0 4.0 5.5
Zinc - 0.5 - 0.5
Tin - 0.1 - 0.1
Lead - 0.05 - 0.05
Silicon - 0.25 - 0.1
Magnesium - 0.05 - 0.5
Total of Sn,Pb,Si, and Mg - 0.3 - 0.3
Copper Remainder Remainder


Fabrication properties
FORGING Very Good
EXTRUSION Excellent
HOT ROLL Excellent
COLD ROLL Poor

Available Forms:
Rods, Ingots


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Krishna Copper Private Limited

Copper Nickel Ingots / Extruded Rods (90/10 - 70/30)

Available Grade:
C70600 & C71500 / C75200/ ASTM B151, SAE J461, SAE J463



Copper nickel alloys, also known as Cu-Ni, offers excellent corrosion resistance, especially in marine salt water environments. Copper nickel alloys that are generally chosen for sea water parts and service equipment contains 10 to 30 percent nickel. These various alloys also have important additions of iron and manganese, which are necessary to maintain good corrosion resistance in the harsh environments. Aside from being very corrosion resistant to sea water, copper nickel alloys are very thermally stable. Copper nickel is most commonly used in applications such as electrical and electronic products, tubes for condensers in ships and power plants, various marine products, including valves, pumps, fittings, and sheathing for ship hulls.



Copper Nickel (90/10)

Applications:
Power Steering Tube, Brake Lines,  Screw Lamp Bases  Condenser Plates, Condensers, Weld Torch Tips, Heat Exchanger Tubes, Valve Bodies, Evaporator Tubes, Pressure Vessels, Distiller Tubes, Pump Impellers for Oil Refining, Ferrules, Evaporators, Boat Hulls, Tube Sheet for Salt Water Service, Salt Water Pipe Fittings, Salt Water Piping Systems, Salt Water Piling Wrap, Hot Water Tanks, Salt Water Baffles, Propeller Sleeves, Ship Hulls, Water Hoses, Flanges
Element Cu Ni Fe Mn
Content (90/10) Rem 9.0 % - 11.0% 1.0 – 2.0 % Max 0.3% -1.0%

Copper Nickel (70/30)

Applications:
Pump Impellers, Heat Exchanger Tubes, Evaporator Tubes, Distiller Tubes, Condenser Plates, Refrigerators, Process Equipment, Condenser Components, Ferrules, Welding Backing Rings, Flexible Metal Hose, Weld Wire, Boiler Parts, Condensers, Propeller Sleeves, Heat Exchanger Components,  Salt Water --- Flanges, Piping, Valve Bodies, Fittings, Condensers, Pipe Fittings, Water Boxes - Pump Bodies and Internal Parts-Sea Water
Element Cu Ni Fe Mn
Content (70/30) Rem 29.0 % - 32.0% 0.5 – 1.5 % Max 0.4% -1.0%

Fabrication properties
EXTRUSION Good
HOT ROLL Good
COLD ROLL Good

Available Forms:
Rods, Ingots & Billets for Extrusion/Forging

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Krishna Copper Private Limited

Nickel Aluminium Bronze

GRADE:- ASTM B171, ASTM B150, ASTM B505, AMS 4640, AMS 4880, ASME SB171, ASME SB150, c 63020, C63000, C95500, C630 , SAE J463, QQ-C-465B, ASME SB150, B-124, B-171, B-283

Nickel aluminum bronze is a special high-strength aluminum bronze used in applications involving heavy loads, friction, and abrasive wear and corrosion. The addition of nickel increases the alloys strength without reducing its excellent ductility, toughness, and good wear resistance.


Applications:
Chemical Composition:
  AL Cu Fe Mn Ni Si Sn Zn
C63000 9.0 -11.0 REM 2.0-4.0 1.5 4.0-5.5 0.25 0.2 0.3
C63020 10-11 74.5 MIN 4.0-5.5 1.5 4.2-6 - 0.25 0.3
C95500 10-11 78 MIN 3.0-5.0 3.5 3.5.5 0.1 0.1 0.15
Fabrication properties
FORGING Good
EXTRUSION Good
HOT ROLL Good
COLD ROLL Poor

Available Forms:
Rods, Ingots

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Krishna Copper Private Limited

Aluminium Silicon Bronze

GRADE:- ASTM B150, AMS 4631C, QQ-C-465, C64200/C63600

Aluminum silicon bronze is non-magnetic and has good fatigue and galling resistance. It has the highest machinability rating of bronzes and brasses without the addition of lead. IT has a combination of machinability, strength, and, hot forgeability, and corrosion and wear resistance that make this a superior copper alloy.


Applications:
Gear parts, strut bushings, rock bit bearing bushings, valve guides, safety belt assemblies, pole line hardware, valve and pump components, cams, hooks, forged machined components, and many more. Industries such as aerospace, oil and gas, automotive, electrical, marine, and others all utilize silicon aluminum bronze.

Chemical Composition:
  AL Mn AS CU FE PB NI SI SN ZN
C63600 3.0 -4.0 - 0.15 REM 0.15 0.05 0.15 0.7-1.3 0.2 0.5
C64200 6.3-7.6 0.1 - - 0.3 0.05 1.6-2.2 0.4-0.8 0.2 0.5

Fabrication properties
FORGING Very Good
EXTRUSION Excellent
HOT ROLL Excellent
COLD ROLL Poor


Available Forms:
Rods, Ingots

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Krishna Copper Private Limited

Nickel Silicon Bronze

GRADE: - CuNi3Si, C64700

Nickel Silicon Bronze is a heat treatable Nickel Silicon Bronze alloy. It has very high mechanical strength, good wear and corrosion resistance in both marine and industrial conditions. Nickel Silicon Bronze is famous for its good anti-friction properties and is extensively used for plunger tips for die casting machines connectors, possessing high electrical and thermal conductivity with very good notch ductility.


Applications:
Valve guides, bearing cages, AEROSPACE INDUSTRY:, short-circuit rings, rotors anti-friction rings, insert for plastic injection molds.



Chemical Composition:
Nickel Silicon Bronze NI % SI % CU % FE % ZN %
C64700  1.6-2.2 0.40-0.8 REM 0.10 MAX 0.5 MAX

Fabrication properties
FORGING
EXTRUSION
HOT ROLL
COLD ROLL


Available Forms:
Rods, Ingots

Yes! I am Interested

Krishna Copper Private Limited

Silicon Bronze

GRADE:- ASTM B96, ASTM B98, ASME SB96, ASME SB98, C65500

Silicon Bronze is a combination of corrosion resistance, strength, resilience, formability, and weldability. Due to ITS high corrosion resistance, it makes an ideal product for the marine industry and other industries requiring a sturdy alloy. IT has excellent hot workability and can be readily hot formed and pressed.


Applications:
Automotive Rectifiers, Transistor Component Bases, High Resistance-Ratio Cryogenic Shunts, Bus Conductors, Wave Guides, Hollow Conductors, Anodes for Vacuum Tubes, Coaxial Cable, Coaxial Tube, Klystrons, Microwave Tubes, Bus Bars, Lead-in Wire, Vacuum Seals, Conductors, Glass-to-Metal Seal


Chemical Composition:
SILICON BRONZE Cu Mn Al Fe Sn Ni Pb Si Zn
C65500 remainder 0.5-1.3 % max --- 0.8 max --- 0.6 0.05 2.8-3.8% 1.5% max

Fabrication properties
FORGING Fair
EXTRUSION Good
HOT ROLL Excellent
COLD ROLL Excellent


Available Forms:
Rods, Ingots

Yes! I am Interested

Krishna Copper Private Limited

Manganese Bronze

GRADE:- ASTM B124, ASTM B138, C67500 and C86300.

Manganese Bronze is a moderately high strength manganese bronze alloy possessing good Corrosion properties and general corrosion resistance. IT has excellent hot working properties and is readily joined by either soldering or brazing welding. 


Applications:
Gears, Fasteners and Hydraulic Parts.




Chemical Composition:
GRADE Cu Mn Al Mn Fe Pb Sn Zn
C86300 60.0%-66.0% <1 % 5.0%-7.50% 2.5 %-5.0% 2.0% -4.0% <0.2% < 0.2% 25%
Fabrication properties
FORGING Good
EXTRUSION Good
HOT ROLL Excellent
COLD ROLL Fair

Available Forms:
Manganese Bronze RODS

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Krishna Copper Private Limited

Tin Bronze

GRADE:- ASTM B505, C90300, C90200, C90500, C90700, C91100

Tin Bronze offers good mechanical and corrosion resistance; it’s often used in castings for liquid and gas, not to mention valves and pumps. In addition to the many qualities IT possesses, it offers a high wear resistance making it an ideal candidate to many jobs.


Applications:
Heavy Construction Equipment, Swivel, Pump Impellers, Piston Rings, Valve Bodies, Valves, Gears, Bushings, Bearings, Pump Bodies, Gear Blanks, Steam Fittings




Chemical Composition:
GRADE Cu SB Al NI Fe P SI Pb Sn Zn
C90300 86.0%-89.0% 0.2 % 0.005% 1% 0.2% 0.05% 0.005% 0.3% 7.5 %-9.0% 3.0-5.0

Available Forms:
Ingots

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Krishna Copper Private Limited

Leaded Bronze (GUNMETAL)

GRADE:- C31400 / C22000 / C31600 / C66100 / C92200 / C92300 / C92500 / C92600 / C92700 / C92800 / C92800 / C92900 / C93400 / C93600 / C93700 / C93800 / C94100 / C94300 / C94800

Leaded Commercial Bronze combines the natural corrosion resistance with the machinability typical of leaded brasses. The relatively low zinc content provides excellent corrosion resistance in potable water along with a pleasing golden color that matches hardware. It is also suitable for outdoor use due to its resistance to stress corrosion cracking and to corrosion in general, but where the highest strength is not required.


Applications : -
 Door Knobs , Connectors for Wire and Cable, Electrical Plug Type Connectors, Screws, Nuts, Pickling Fixtures, Pickling Racks, Pickling Crates, Screw Machine Parts

Chemical Composition:

Designation

LB1

G1

G3

 

Material

76/09/0/15 Leaded bronze

88/10/2 Gunmetal

Nickel gun metal

 

 

 

 

 

 

 

Elements

Min. %

Max.%

Min. %

Max.%

Min. %

Max.%

Copper

Rem.

Rem.

Rem.

 

Tin

8.0

10.0

9.5

10.5

6.5

7.5

Zinc

-

1.0

1.75

2.75

1.5

3.0

Lead

13.0

17.0

-

1.5

0.1

0.5

Phosphorous

-

0.1

-

-

-

0.02

Nickel

-

2

-

1.0

5.25

5.75

Iron

-

-

-

0.15

-

-

Aluminium

-

-

-

0.O1

-

0.01

Manganese

-

-

-

-

-

0.2

Antimony

-

0.5

-

-

-

-

Arsenic

-

-

-

-

-

-

Silicon

-

0.02

-

0.02

-

0.01

Bismuth

-

-

-

0.03

-

0.02

Total other impurities

-

0.3

-

0.5

-

0.5

GOOD FAIR NOT RECOMMENDED
FORGING
EXTRUSION
HOT ROLL
COLD ROLL

 

Available Forms:

Yes! I am Interested

Krishna Copper Private Limited

Leaded-Tin Bronze

GRADE:- ASTM B505, ASTM B271, SAE 660

Leaded-Tin Bronze C93200 SAE660 in hollow, solid, and rectangle form. C93200 has excellent machining properties, good hardness, and strength and wear resistance with excellent antifriction qualities. Copper Alloy 932 is not subject to dezincification. With a machinability rating of 70,


Applications:
 Worm Wheels, Worm Gears, Comprise Gears, Heavy Load, Relatively Low Speed Bearings

Chemical Composition:
LTB1 LTB2 LTB3 LTB4 LTB5 LTB6
Elements Min.% Max.% Min.% Max.% Min.% Max.% Min.% Max.% Min.% Max.% Min.% Max.%
Tin 6 8 4 6 6 8 6 8 9 11 4 6
Zinc 1.5 3 4 6 - 0.75 - 0.75 - 1 - 1
Lead 2.5 3.5 4 6 9 11 14 16 8.5 11 18 23
Nickel - 2 - 2 - 2 - 2 - 2 - 2
Aluminium - 0.01 - 0.01 - 0.01 - - - 0.1
Silicon - 0.01 - 0.02 - 0.02 - 0.02 - 0.02 - 0.01
Antimony - 0.3 - 0.4 - 0.5 - 0.5 - 0.5 - 0.5
Iron - 0.3 - 0.35 - 0.35 - 0.35 - 0.35 - 0.35
Total of all Impurities - 0.7(Excluding Ni) - 0.8(Excluding Ni) - 0.8(Excluding Ni + Zn) - 0.8(Excluding Ni + Zn) - 0.8(Excluding Ni + Zn) - 0.8(Excluding Ni + Zn)
Copper Remainder Remainder Remainder Remainder Remainder Remainder

Available Forms:
Rods, Ingots

Yes! I am Interested



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