Nickel Technical Data
Rod and Bar
Machining Allowances for Hot Finished
(allow the following oversizes)
Condition (1)
Dimensions
(inches)
Machining allowances (inch) (2)
Diameter
Across Flats
(Hexagons and Squares)
Thickness
(Rectangles)
Width
(Rectangles)
Hot Finished
Up to 0.875
0.125
0.125
0.125
0.187
0.876 - 1.875
0.125
0.187
0.125
0.187
1.876 - 2.875
0.187
0.250
...
0.187
2.876 - 3.812
0.250
...
...
0.187
Over 3.812
.0250
...
...
0.375
Rough Turned
or Rough Ground
(2) (3)
0.500 - 0.875
0.005
...
...
...
0.876 - 4.000
0.062
...
...
...
4.001 - 12.000
.0125
...
...
...
12.001 - 20.000
0.125
...
...
...
Semi Smooth
Machined (3)
Up to 2.500
(Up to 10' length)
0.062
...
...
...
2.501 - 4.000
(Over 10-20' lengths)
.0125
...
...
...
4.001 - 10.000
(Up to 30' length)
0.125
...
...
...
(1) Dimensions apply to diameter of rods, distance between parallel
surfaces of squares and hexagons, and separately to width or thickness
of rectangles.
(2) The allowances are recommended for rounds to be machined in lengths
36" or less and for squares, hexagons, and rectangles to be machined in
lengths 24" or less. Lengths longer than those cited should show
the finish, cross-sectional dimensions, and also the length in which the
material in to be machined in order that material may be supplied with
sufficient oversize, including allowance for out of straightness.
(3) The allowance for hot finished rod, rough turned or semismooth
machined, provide for sufficient excess metal to insure straightness in
finished shafts within the limits indicated above.
