|
|
|
|
Machining Allowance,
Round Bar Stock
|
Hot Rolled Bars |
Alloy or special quality carbon steel bars, hot rolled 1.6%
of diameter per side. |
|
Cold Drawn Bars |
.001" per .062" (1.6%) of diameter per side, including
leaded steels.
.0015" per .062" (2.4%) of diameter per side, for free
machining grades, except leaded
steels. |
Cold Drawn,
Ground and Polished Bars |
.0005" per .062" (0.8%) of diameter per side, including
leaded steels.
.00075" per .062" (1.2%) of diameter per side, for free
machining grades, except leaded steels. |
|
Turned Bars |
This product requires finish machining to clean up the
turning marks according to the following table:
|
| |
Bar Size
(Inches) |
|
Minimum Removal
Per Side (Inch) |
Minimum Removal
Per Diameter (Inch) |
|
| 5/8 |
to 2 |
incl. |
.010 |
.020 |
| Over 2 |
to 3 |
incl. |
.013 |
.026 |
| Over 3 |
to 3 ½ |
incl. |
.015 |
.030 |
| Over 3 ½ |
to 4 |
incl. |
.018 |
.036 |
| Over 4 |
to 4 ½ |
incl. |
.021 |
.042 |
| Over 4 ½ |
to 5 |
incl. |
.024 |
.048 |
| Over 5 |
to 6 |
incl. |
.027 |
.054 |
| Over 6 |
to 7 |
incl. |
.030 |
.060 |
| Over 7 |
to 8 |
incl. |
.033 |
.066 |
|
|
Turned and Polished
Turned, Ground and
Polished Bars |
Bars ordered to these conditions are generally free of
decarburization and surface imperfections. If total freedom
from decarburization is required, it must be specified. |
|
Turned, Ground and
Polished Bars may be used in
the as received condition. |
RECOMMENDED STOCK REMOVAL FOR
AIRCRAFT QUALITY ALLOYS SUBJECT TO MAGNETIC PARTICLE
INSPECTION
| |
|
Hot Rolled Bars |
|
Up to 1/2, incl |
0.030 |
|
Over 1/2 to 3/4, incl |
0.045 |
|
Over 3/4 to 1, incl |
0.060 |
|
Over 1 to 1 ½, incl |
0.075 |
|
Over 1 ½ to 2, incl |
0.090 |
|
|
Over 2 to 2 ½, incl |
0.125 |
|
Over 2 ½ to 3 ½, incl |
0.156 |
|
Over 3½ to 4 ½, incl |
0.187 |
|
Over 4 ½ to 6, incl |
0.250 |
|
Over 6 to 7 ½, incl |
0.312 |
|
|
|
|
|
|
|
