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Krishna Copper Limited

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Oxygen Free Copper

Krishna Copper Limited

Oxygen Free Copper (OFHC)

Available Grade:
ASTM B124, ASTM B187, ASTM B152, ASTM B187, ASTM B188, DIN 2.0040, BS 2870 C103, BS 2871 C103, BS 2874 C103, BS 2875 c103 , c101, c 102.


Description : Copper C10100 and C10300 (99.99%) and C10200(99.95%) are produced by melting and pouring copper in the presence of carbon or carbonaceous gases so the oxygen can be absorbed. This high purity and absence of deoxidizers account for its average conductivity of 101% IACS. Oxygen- Free alloy is free from hydrogen embrittlement when heated in a reducing atmosphere.


Applications:
Automotive Rectifiers / Transistor Component Bases, High Resistance-Ratio Cryogenic Shunts, Bus Conductors, Hollow Conductors, Anodes for Vacuum Tubes, Coaxial Cable, Coaxial Tube, Klystrons, Microwave Tubes, Bus Bars, Lead-in Wire, Vacuum Seals, Conductors, Glass-to-Metal Seals, Electrical Conductors, Transistor Components, Coaxial Cables, Copper to Glass Seals in Electronic Appliances, Bus Conductors, Wave Guides, Tubing, LP Gas Service, Tubing, Medical Gas- Oxygen, Vacuum Seals, Coaxial Tube, Billet Mold Tube, Extrusion Cans for Powder Metallurgy


Chemical Composition:
GRADE STANDARD COPPER MINIMUM OXYGEN CONTENT MAXMUM (PPM)
C10100 CR009A 99.99% 04
C10200 CR008A 99.95% 10
C10300 CR021A 99.95% 10

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


Available Forms:
Flats, Rods, Wires, Plates / Sheets, Foils, Strips, Profiles/ Sections, Billets For Forging And Extrusions, Anodes, Balls, Nuggets.



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Available Grade : C11400, C11600, C10400, C10700


Krishna Copper Limited

Silver Bearing Copper

Description : Silver bearing oxygen-free copper is a high purity copper that is immune against hydrogen embrittlement. It is used in applications where high electrical and thermal conductivity are essential. Small amount of alloyed silver increase the softening temperature of pure copper and the mechanical properties at elevated temperature are higher than in pure copper. It can be joined with all welding and brazing methods and it is suitable for manufacturing processes requiring extreme deformability


Applications : Commutators, Generator rotor and stator windings

Available Forms : Flats, Profiles/ Sections


Multiple Chart:

Chemical Composition :-
GRADE COPPER SILVER
% MIN MAX
C11400 / CR011A 99.90% 0.03% 0.05%
C11600/ CR013A 99.90% 0.08% 0.012%
CR014A 99.90% 0.03% 0.05%
CR016A 99.90% 0.08% 0.12%
C10400/CR017A 99.95% 0.03% 0.05%
C10700 / CR019A 99.95% 0.08% 0.12%

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

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Krishna Copper Limited

Oxygen Free Copper Flat

“kriscop” Copper Flats are available in a wide range of finishes as per the specific end application demands. These Copper flats are fabricated using Copper purity of up to 99.9 % in compliance with defined industry standards including IS191 IS1897.

Further, our expertise also lie in delivering these with Copper or nickel coating in forged, hot rolled as well as in cold worked finish as per required dimensions. These can also be made available in soft, half-hard and hard conditions in different finishes. The surface treatment of Copper flat bar can be electro-plated with tin or silver.


Benefits:
  • High Conductivity
  • Dimensional Accuracy
  • Longer service life
  • Crack - free Bends

Applications :
  • Bus Bars
  • Transformer Connectors
  • Earthing Protection in L.T. and H.T. Electrical Panels
  • Power Transmission equipment
  • Control Panels


Usage Manufacturing, Construction
Single Piece Length 3 Meter, 6 Meter, 18 Meter, >36 Meter




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