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Beryllium Copper Tolerances

 

Round Bars

 

 

 

 

 

 

 

 

Round Bars
Alloy(s)    Spec. Diameter, in.  Diameter Tol. (over(+)/under(-))
173  Hard Drawn  Up to 0.150, incl.  +/- 0.002"
173  Hard Drawn  Over 0.150 to 0.500, incl.  +/- 0.002" 
172, 173  Hard Drawn  Over 0.500, to 1.00, incl.  +/- 0.003" 
172  Hard Drawn  Over 1.00 to 2.00, incl.  +/- 0.004" 
172  Hard Drawn  Over 2.00 to 2.5, incl.  +/- 0.005" 

 

 

Straightness Tolerance - Drawn Round Bar
Alloy(s)   Mill Length, ft. Max. Curvature (Depth of Arc), in.
172 & 173 Drawn 10 and over 0.5" in any 10-ft portion
Straightness tolerance will be void once full length is cut

 

 

Round Bars
Alloy(s)  Spec. Diameter, in.  Diameter Tol. (over(+)/under(-))
MoldMax High Hard  0.5 to 0.875, incl.  + 0.020" to +0.040"
MoldMax High Hard  1  + 0.020" to +0.050"
MoldMax High Hard  Over 1 to 2, excl.  + 0.030" to +0.060"
MoldMax High Hard  2 to 4, excl.  + 0.040" to +0.080"
MoldMax High Hard  4 to 6, incl.  + 0.060" to +0.120"