MIL-DTL-5886H
Mn
0.5 percent max
Si
0.3 percent max
P
0.03 percent max
S
0.02 percent max
14.0 18.0 percent
Cr
6.0 7.0 percent
Ni
0.70 0.95 percent
Ti
Fe
Remainder
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled,
recovered, or environmentally preferable materials should be used to the maximum extent
possible, provided that the material meets or exceeds the operational and maintenance
requirements, and promotes economically advantageous life cycle costs.
3.3 Design and construction. The design and construction of the cylinders shall be in
accordance with the applicable part number of Table IV and Figure 2, as specified in the contract
or order (see 6.2).
3.3.1 Welding. Welding shall be performed in accordance with AWS D17.1, Class A
(see 4.5.7).
3.3.2 Closures. Cylinders with two openings shall have one plug conforming to SAE-
AS4863, CRES type 304 or 316, while the other opening shall be closed with a removable metal
threaded plug or cap conforming to NAS847. The cylinder with one opening shall be closed with
a removable metal threaded plug or cap conforming to NAS847 or a commercially equivalent
metal plug or cap. These plugs or caps shall protect the threads and prevent entrance of foreign
matter or moisture (see 4.5.1).
3.3.3 Forming by pressurization. Forming by pressurization up to 900 psi as a
manufacturing process is allowed. The permanent volumetric expansion test (see 4.5.4) is a
separate requirement.
3.4 Performance.
3.4.1 Cleanliness. The cylinders, when tested as specified (see 4.5.1), shall pass the
requirements in Table I as specified (see 4.5.2).
3.4.2 Leakage. The cylinder shall show no evidence of leaks when tested as specified
(see 4.5.3).
3.4.3 Permanent volumetric expansion. The cylinder shall have a permanent volumetric
5
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