TABLE II. Mechanical property requirements.
Charpy V-notch (CVN) impact 2/
Ultimate tensile Yield strength at 0.2 percent
Elongation in 2 inches,
offset, minimum 1/ (lb/in2)
minimum percent 1/
strength
Energy ft-lb minimum
minimum lb/in2
average as-welded and Temperature (°F)
as-welded 1/
As-welded Stress-relieved 3/ As-welded Stress-relieved 3/
stress-relieved 3/
MIL-type
MIL-70T-6
20
0
MIL-70T-1
70,000
60,000
55,000
22
22
30
30
MIL-71T-1
MIL-71T-1-HYR 5/
60,000 to
MIL-71T-1-HYN 5/
60,000
22
22
30
-20
--
90,000
MIL-71T-1-HYD 5/
MIL-71T-1A
MIL-70T-5
MIL-70T-8
20
60,000 to
-20
MIL-71T-8
55,000
22
22
70,000
35
75,000
0
MIL-71T-8A
MIL-71T8-K6
MIL-71T8-Ni1
MIL-7XT-X-HY 4/
MIL-7XT-X-HZ 4/
60,000 to
20
-20
70,000
55,000
22
22
MIL-7XTX-X-HY 4/
75,000
35
0
MIL-7XTX-X-HZ 4/
MIL-8XTX-X-HY 4/
30
-20
65,000 to
60,000
22
22
80,000
MIL-8XTX-X-HZ 4/
40
0
85,000
MIL-80T1-Ni1
MIL-81T1-Ni1
20
-20
65,000 to
60,000
22
22
80,000
35
0
85,000
MIL-80T1-Ni2
MIL-81T1-Ni2
See footnotes at top of next page.
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