Tolerances & Tests

 

Tolerance For Copper & Copper Alloy Rods as per IS:2826-1986.

Dimensions
of Rod

Round Hexagonal Square
Normal Close Normal Close Normal Close

mm

mm mm mm mm mm mm
6-10 (+,-)0.05 +0.05 -0.10 -0.08 (+,-)0.09 -0.05
10-20 (+,-)0.10 -0.05 -0.20 -0.10 (+,-)0.13 -0.10
20-30 (+,-)0.15 -0.08 -0.25 -0.13 (+,-)0.18 -0.13
30-40 (+,-)0.20 -0.10 -0.30 -0.15 (+,-)0.23 -0.15
40-50 (+,-)0.20 -0.10 -0.40 -0.20 (+,-)1.0% (+,-)0.75%
50-70 (+,-)0.75% (+,-)0.5% -0.50 -0.25 (+,-)1.0% (+,-)0.75%
70-100 (+,-)1.5% (+,-)0.75% -2.0% -1.5% (+,-)2.0% (+,-)1.5%
Over 100 (+,-)2.5% (+,-)1.5% -3.0% -2.0% (+,-)3.0% (+,-)2.0%
 
 

Tolerance For Copper & Copper Alloy Tubes as per IS:5493-1981.

Outside Diameter Tolerances Thickness Tolerances
Normal Reduced
mm mm mm mm mm
Upto 10 (+,-) 0.08     (+,-) 0.045

For all sizes

(+,-) 12.5%
Over 10 to 18 (+,-) 0.10     (+,-) 0.045
Over 18 to 32 (+,-) 0.12     (+,-) 0.055
Over 32 to 50 (+,-) 0.15     (+,-) 0.070
Over 50 to 50 (+,-) 0.20 -
   Over 80 to 125 (+,-) 0.25 -