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Nickel Technical Data
Rod and Bar
Tolerance on Length and Straightness |
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Permissible Variations in Length of Bar and Rod, All Conditions. |
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Specified Length
(feet) |
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Shortest acceptable
lengths (feet) |
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Maximum acceptable
length |
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Maximum permissible percentage
by weight of short length |
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| Random mill lengths (1) |
6 |
24 ft |
25% under 9 ft |
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Nominal
(stock)
length (2) |
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16 to 18 |
16 |
18 ft, 1/2 in. |
100% 16 ft or longer |
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| 14 to 16 |
14 |
16 ft, 1/2 in. |
100% 14 ft or longer |
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| 12 to 14 |
12 |
14 ft, 1/2 in. |
100% 12 ft or longer |
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| 10 to 12 (3) |
10 |
12 ft, 1/2 in. |
100% 10 ft or longer |
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| 8 to 10 (3) |
8 |
10 ft, 1/2 in. |
100% 8 ft or longer |
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| 6 to 8 (3) |
6 |
8 ft, 1/2 in. |
100% 6 ft or longer |
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| 4 to 6 |
4 |
6 ft, 1/2 in. |
100% 4 ft or longer |
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| Cut to length (4) |
Specified length |
Specified length to plus
1/8 in. |
100% Specified plus 1/8 in. |
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(1) For hot finished sections weighing over 25 pounds per lineal foot
and for smooth forged products, all sections, short lengths down to 2 feet
may be furnished.
(2) Other nominal lengths with a specified range of not less then 2
feet, with no shorts allowed, may also be furnished.
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(3) For cold drawn rod and bar under 1/2 inch in diameter or distance
across flats ordered to nominal or stock lengths with a 2 foot range, at
least 93 percent of such material shall be within the range specified;
the balance may be shorter lengths but in no case shall lengths less then
4 feet be furnished.
(4) For diameters over 8 inches, the tolerance shall be plus 1/4 inch,
minus 0. |
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Permissible Variations in Straightness of Rod and Bar (1) |
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| Ordered Condition, Finish, and Size |
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Permissible Deviations in Straightness (inches) |
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Hot Finished: (2)
Bar and Rod (hot finished surface) |
Depth of chord (3)
0.050 per foot of length |
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Rounds:
Rough turned or rough ground
Semismooth machined
Smooth finished machined |
Throw in one revolution (4)
0.0500 per foot of length
0.0031 per foot of length
0.0015 per foot of length |
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Cold Drawn:
Rounds (diameter) Up to 4 inches, incl. |
Depth of chord (3)
0.030 per foot of length |
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Hexagons and Squares:
All sizes |
Depth of chord (3)
0.030 per foot of length |
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(1) Not applicable to forging quality rod.
(2) Except forging quality stock. |
(3) The maximum curvature shall not exceed the value indicated multiplied
by length in feet.
(4) The throw is one revolution in any 20 feet maximum length shall
not exceed the values indicated multiplied by length in feet. |
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Permissible Variations in Straightness of Precision Straightened
Cold Drawn Shafting |
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Ordered Diameter of Shafting
(inches) |
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Standard Distance
Between Supports
(inches) |
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Permissible Variations
Throw in one Revolution
from Straightness
(inches) |
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| 1/2 to 15/16, incl. |
42 |
0.005 |
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| Over 15/16 to 1-15/16, incl. |
42 |
0.006 |
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| Over 1-15/16 to 2-1/2, incl. |
42 |
0.007 |
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| Over 2-1/2 to 4, incl. |
42 |
0.008 |
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| 3/4 to 15/16, incl. |
Specified lenghts of
3 to 10 feet |
0.004 plus 0.0025 for each
foot, or fraction thereof,
in excess of 3 feet. |
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| Over 15/16 to 4 incl. |
Specified lengths of
20 feet of less |
0.005 plus 0.0015 for each
foot, or fraction thereof,
in excess of 3 feet. |
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