 |
|||
|
|
|||
| ||||||||||
|
|  MILT8504B
3.1.1 Chemical composition. The chemical composition shall be as specified in table I.
TABLE I. Chemical composition of the tubing.
Element
Limits
Check analysis tolerance 1/
(percent)
(under min. or over max.)
Carbon
0.08 (max)
0.01
Manganese
2.00 (max)
0.04
Phosphorus
0.04 (max)
0.005
Sulfur
0.030 (max)
0.005
Silicon
1.00 (max)
0.05
Chromium
18.00 20.00
0.20
0.20
Nickel
8.00 12.00
0.10
0.15
Molybdenum
0.50 (max)
0.03
Copper
0.75 (max)
0.03
1/ Individual determination may vary from the specified range to the extent
shown in the check analysis column, except that elements in any heat shall
not vary both above and below the specified range.
3.1.2 Grain size. The grain size of the steel in the asreceived condition shall be
predominantly no. 5 or finer, in accordance with ASTM E 112.
3.2 Mechanical properties. The mechanical properties shall be as specified in table II.
TABLE II. Mechanical properties of tubing.
Elongation
Nominal
Nominal wall
Ultimate tensile
Yield strength
in 2 inches
outside
thickness
strength (psi)
0.2 percent
(min) percent
diameter
(inch)
offset (min)
(inch)
(psi)
Full
section
strip
0.187 and
0.016 and less
115,000 (max)
30,000
35
35
less
Over 0.016
75,000 100,000
30,000
40
35
Over 0.187
0.012 and less
110,000 (max)
30,000
37
37
to 0.500,
incl.
Over 0.012
75,000 100,000
30,000
40
35
Over 0.500
All
75,000 100,000
30,000
40
35
3
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals