Copper

SAI Industries and its associate companies manufactures the following grades of Copper:

1. Copper Electrolytic
2. Copper Silver
3. Copper DHP
4. Tellurium Copper

 

 

 

 

Copper Electrolytic

This is a high electrical conductivity copper used in electrical switch gear units. It is supplied in strips, profiles, rods, wires and tubes.


Copper Strips

 

Data Sheet:

 

   Electrolytic Tough Pitch Copper High Conductivity Copper (Oxygen free) Electrical uses Oxygen Free High Conductivity for Electronic use Silver Bearing Copper for Commutator
Specifications
Sheet & Strips BS/2870/C101 BS/2870/C103 BS/2870/C110 BS/2870/C103 Ag
Tubes BS/2871/C101 BS/1977 BS/3839

-

Wires

-

-

-

BS/2873/C103Ag
Rods & Bars

BS/2874/C101
IS/613/84

            -
IS/613
IS/2501/1985
IS/2532/1965

BS/2874/C110

-

Chemical Composition(%)
Copper 99.90 Min. 99.95 Min. 99.99 Min. 99.85
Impurities 0.03 Max.
(Silver & Oxygen)
0.03 Max. 0.008 Max. 0.008 Max.
Silver (OF Ag-2)
         (OF Ag-4)
        0.03 Min.
0.09 Min.
Mechanical Properties
U.T.S. (A) (H) 220 N/mm2
385 N/mm2
220 N/mm2
385 N/mm2
220 N/mm2
385 N/mm2
220 N/mm2
385 N/mm2
Elongation (%)   55 55 55 55
Hardness (VPN)
            
(A)  (H) 45
115
45
115
45
115
45
115
Conductivity
@20C (annealed) 99.25%
I.A.C.S.
99.25%
I.A.C.S.
99.25%
I.A.C.S.
99.25%
I.A.C.S.

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Copper Silver

This is a high electrical conductivity copper with high softening temperatures compared to electrolytic copper. Silver content generally is 0.025 to 0.035 %. This copper is generally used in high speed rotating parts like traction motors, hand tools, mixers, etc. It can be supplied in strips, profiles, rods, wire and tube forms.


Copper Strips

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Copper DHP

This copper is having lower electrical conductivity and is used where importance is heat transfer/conductance and not any electrical properties.

This copper is generally used in heat exchangers and chemical plants. This copper can be supplied in forms of tubes, strips, rods and wire.

Coper Strips

Data Sheet:

 

  NON-ARSENICAL ARSENICAL
Specifications
Tubes BSA/2871/C106
IS/2501/1985 DHP
BS/2871/C107
IS/2501/1985 DPA
Rods

BS/2874/C106
IS/4171/1967

            -

Chemical Composition(%)
Copper 99.85 Min. 99.2 Min.
Phosphorus 0.013 to 0.10 0.015 to 0.10
Arsenic

-

02 to 0.5
Impurities 0.06 Max. 0.07 Max.
Mechanical Properties
U.T.S. (A)
(1/2 H)
(H)
200 to 250 N/mm2
250 N/mm2 Min.
280 N/mm2 Min.
200 to 250 N/mm2
250 N/mm2 Min.
280 N/mm2 Min.
Elongation % (A)
(1/2 H)
40
30
40
30
Hardness (VPN) (A)
(H)
45
115
50
115

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Tellurium Copper

Tellurium Copper has become the recognized material for use where high electrical conductivity must be combined with machinability. 

Silinic Copper Tubes

The normal tellurium content of about 0.5% the properties of the alloy arevery similar to those of pure copper, but the machinability is comparable with that of free cutting brass. It is, however, more resistant to corrosion and has, therefore, successfully replaced brass for machine parts and fittings in mines and similar corrosive environments. Tellurium copper is specially suitable for the manufacture of electrical instruments and equipments where accuracy of machined dimensions, good surface and freedom from burrs are primary considerations.

Data Sheet:

 

    Tellurium Copper
Specifications
            BS2874/86/C109
IS/8328/1977
Chemical Composition(%)
Copper (includes copper and silver plus alloying elements) 99.80 Min.
Tellurium 0.30 to 0.70
Mechanical Properties
U.T.S. (A)
(H)
230 N/mm2 Min.
310 N/mm2
Elongation % (H) 8 Min.
Electrical Conductivity Annealed (ACS)   90%

 

Product Range

 

Strips 4 mm to 160 mm width
0.4 mm to 18 mm thick
Rods 1.20 mm to 80 mm dia.
Wires 0.2 mm to 20 mm dia.
Tubes 4 mm to 70 mm dia
0.25 mm to 8 mm thick

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