Raw Material

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Raw Material

MTL/FORM

PARAMETERS CHECKED

INSTRUMENTS OF INSPECTION

ACCEPTENCE SPECIFICATION

STANDARD VALUES

       (A) Copper

Tubes, Strips & Rods

Chemical composition

Testing done at Renowned lab & manufacturer T.C.

BS 1977
IS 191 (part-v)
IS 1897

-
-

Dimensions
Surface roughness
Ovality
Hardness
Conductivity
Resistivity

Flattening

Bend test

Vernier/Gauges
-
Visual/Vernier
Hardness Testing M/C
Conductivity Meter
Resistivity Meter

Press

V’Block / Vice

BS 1977
Visual
-
do
do
do

IS 5071
OR BS 1977
IS 3260

-
-
-
60-70HV
Min. 97% I.A.C.S
0.0172 ohm mm2/m at 20°C

Should not crack when Flattened
Should not crack when bent

       (B) Aluminium

Tubes

Chemical Composition

Testing done at Renowned Lab & manufacturer T.C.

IS 5082

 

Dimensions

Surface roughness
Ovality
Hardness
Conductivity
Resistivity

Flattening

Bend test

Vernier/
Go & No Go Gauges

Visual/Vernier
Hardness Tester
Conductivity Meter
Resistivity Meter

Press

V’Block / Vice

IS 5082

Visual
-
IS 5082
do
do

 

IS 5082

-

-
-
30BHN max
Min. 60% IACS
2.87 micro ohm cm at 20°C

Should not crack when Flattened
Should not crack when bent

    (C) Insulation Sleeves

 

Dimensions
Surface roughness
Ovality
Colour

Hardness
Flattening

Vernier/Gauges
Vernier/Visual
Visual

Pliers
Pliers

IS 1951-1961
-
IS 1951-1961
-

IS 1951-1961
do

-
-
-
1.5 Red, 2.5 Blue, 4.6 Yellow 10-16 Black
Should not crack
When flattened

 COPPER

ALUMINIUM

Raw Material Grade:

Electrolytic Copper grade as per BS 1977 / IS 2501 / IS 1897

Conductivity: Min.  97% IACS

Chemical Composition:

Copper + Silver       : 99.90%

Bismuth Max          : 0.001%

Lead Max                : 0.005%

Impurities               : 0.003%

Resistivity              : 0.017% ohm.mm2/m at 200 C

Physical Properties:

Tensile strength (above 0.5 mm thick): 245 MP a Min

Hardness : 60 HV

Raw Material Grade:

Electrolytic grade as per IS 5082

Conductivity:  Min. 60% IACS

Chemical Composition:

Aluminium                        : 99.5%

Copper Max                      : 0.04%

Silicon                                : 0.15%

Iron max                            : 0.35%

Titanium                            :  0.02%

Magnesium

Zirconium                          : 0.02% each

Tensile Strength               : 60 MP a Min

Resistivity                          : 2.87 Micro Ohm. cm