MIL-DTL-24403/1F(SH)
TABLE II. Mechanical property requirements - Continued.
Footnotes:
1/
Mechanical properties as determined from all weld metal tension test specimen.
2/
For each testing temperature, the average value of five tests shall be greater than the minimum average value
specified. No two specimens shall have values below the minimum average specified. One specimen can have
a value of 10 foot-pounds (ft-lb) below the minimum average specified.
3/
Stress-relieved procedure shall be in accordance with Note 7 of Figure 1.
4/
Electrodes qualification tested for conformance to these properties and hydrogen as specified (see 3.6) for the
additional use of welding ordinary or higher strength steel to HY-80 or HY-100 steel shall have a suffix of
"HY" or "HZ" added to the electrode designation (for example MIL-70T-1-HYC or MIL-81T1-Ni1-HYM; also
see Table VI).
5/
Electrode requires bracketed cooling rate testing. The high cooling rate test weld assembly shall be prepared in
the 1G position. The average heat input considering all weld passes of the high cooling rate test weld assembly
shall be 30 minus 5 or plus 2 kJ/in and the preheat/interpass temperature shall be 60 to 150 °F. The low cooling
rate test weld assembly shall be in the 3G position. The average heat input considering all weld passes of the
low cooling rate weld assembly shall be 75 plus 5 or minus 2 kJ/in (except for 0.035 diameter flux cored wire,
where the average heat input considering all weld passes shall be 55 plus 5 or minus 2 kJ/in), and the
preheat/interpass temperature shall be 275 to 300 °F. The root layer may be excluded from all heat input
calculations.
3.5 Soundness. Welds shall meet the standards for radiographic inspection in accordance with Class 1 of
MIL-STD-2035.
3.6 Hydrogen. Hydrogen levels (milliliters per 100 grams of weld metal) determined in accordance with
AWS A4.3 shall not exceed the limits given in Table III.
6
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