MIL-DTL-22050E (SH)
4.4.5.2 Volume change after immersion in hot distilled water. Volume change after immersion in hot
distilled water shall be determined in accordance with Method 6211 of FED-STD-601.
4.4.6 Immersion in 25 percent aqueous solution of MEA. Test specimens for the individual tests shall be
immersed in a 25 percent by volume aqueous solution of MEA in a covered glass jar. The jar shall be put in a
container capable of withstanding an internal pressure of 300 lb/in2. The container shall be sealed and placed in a
steam autoclave and heated for 166 + 1 hours at 330o + 2oF. The MEA shall conform to MIL-M-23573. These tests
are not applicable to Grade 3 material.
4.4.6.1 Tensile properties after immersion in MEA solution. After immersion as specified in 4.4.6, the
tensile properties shall be determined as specified in 4.4.5.1.
4.4.6.2 Volume change after immersion in MEA solution. After immersion as specified in 4.4.6, the
volume change shall be determined in accordance with Method 6211 of FED-STD-601.
4.4.7 Aging in steam.
4.4.7.1 Aging in steam at 330oF. Test specimens for the individual tests shall be exposed to steam in an
autoclave for 166 + 1 hours at 330oF + 2oF. After the aging period, the tensile specimens shall be set aside at 80o +
9oF for 16 to 96 hours before determining the required property.
4.4.7.1.1 Tensile properties after aging in steam at 330oF. After aging in steam as specified in 4.4.7.1, the
tensile properties shall be determined as specified in 4.4.2.
4.4.7.1.2 Volume change after aging in steam at 330oF. After aging in steam as specified in 4.4.7.1, the
volume change shall be determined in accordance with Method 6211 of FED-STD-601.
4.4.7.2 Aging in steam at 390oF. Test specimens for the individual tests shall be exposed to steam in an
autoclave for 70 + 1 hours at 390o + 2oF. After the aging period, the tensile specimens shall be set aside at 80o + 9oF
for 16 to 96 hours before determining the required property.
4.4.7.2.1 Tensile properties after aging in steam at 390oF. After aging in steam as specified in 4.4.7.2, the
tensile properties shall be determined as specified in 4.4.2.
4.4.7.2.2 Hardness after aging in steam at 390oF. After aging in steam as specified in 4.4.7.2, the hardness
shall be determined as specified in 4.4.3.
4.4.7.2.3 Volume change after aging in steam at 390oF. After aging in steam as specified in 4.4.7.2, the
volume change shall be determined in accordance with Method 6211 of FED-STD-601.
4.4.7.2.4 Compression set after aging in steam at 390oF. After aging in steam as specified in 4.4.7.2, the
compression set shall be determined in accordance with ASTM D 395 except that three 0.500 + 0.010 inch thick
specimens shall be tested and the specimens shall be held at a 25 percent deflection during steam aging.
4.4.7.3 Aging in steam at 550oF. Test specimens for the individual tests shall be exposed to steam in an
autoclave for 166 + 1 hours at 550o + 2oF. After the aging period, the tensile specimens shall be set aside at 80o +
9oF for 16 to 96 hours before determining the required property.
4.4.7.3.1 Tensile properties after aging in steam at 550oF. After aging in steam as specified in 4.4.7.3, the
tensile properties shall be determined as specified in 4.4.2.
4.4.7.3.2 Hardness after aging in steam at 550oF. After aging in steam as specified in 4.4.7.3, the hardness
shall be determined as specified in 4.4.3.
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