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|  MIL-E-24403/2C(SH)
The ultimate tensile strength and percentage reduction of area shall be
recorded for information only.
The yield strength shall be the average of duplicate specimens measured at
0.2 percent offset by using a class B extensometer in accordance with
ASTM E 83, or better.
Requirements of either Charpy V-notch or dynamic tear shall be met.
For each testing temperature, the average values 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 may have a
value of 10 foot-pounds below the minimum average specified. Test procedure
for Charpy V-notch shall be in accordance with AWS B4.0.
Test procedure for 5/8-inch dynamic tear test shall be in accordance with
ASTM E 604.
The convex surface of the specimen after bending shall have no visual
cracks exceeding 1/8 inch. The corners of the specimen shall have no
visual cracks exceeding 3/16 inch. The bend radius shall be 2t and the
tests conducted in accordance with AWS B4.0.
Explosion crack-starter test results shall meet the following criteria when
tested at 0 degrees Fahrenheit
(a) First shot
- Crack-starter bead shall crack.
Percent reduction in thickness obtained for informa-
tion only.
No piece shall be thrown out of weldments.
No through-thickness cracks shall be present.
No crack shall extend into hold-down area.
Crack shall remain within 12-1/2 inch radius measured
from center of weldment.
(b) Second shot - Percent reduction in thickness obtained for informa-
tion only.
No piece shall be thrown out of weldment.
Through-thickness cracks are acceptable.
No cracks shall extend into hold-down area.
Crack shall remain within 12-1/2 inch radius measured
from center of weldment.
Test procedure for explosion testing shall be in accordance with MIL-STD-2149.
3.7 Alloy identity.
3.7.1 Sampling for splices. For lots specified in MIL-E-24403, each end of
strip to be spliced during processing shall be sampled at the splicing station for
alloy identity (see 4.6), except when splicing is done to repair a break without
removing the strip from the process line. The sample shall be tested for alloy
identity before shipment of the lot.
3.7.2 Sampling of coils. Both ends of each coil rolled to final thickness
shall be tested for alloy identity (see 4.6) before further processing into
electrodes .
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