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C-103
is fully recrystallized by heat treating one to two
hours at 2400° F with more than 80% cold work. C-103
products include:
- Sheet
.030" thick, grain size ASTM 6 minimum
- Plate
1-1/2" thick, extruded, and rolled, grain size ASTM
4-6
- Round
bar 3-1/4" diameter, forged and machined, grain size
ASTM 3-5
Hardness:
VAR Ingot 130-145 BHN
Recrystallized product: 130-145 DPH
C-103
alloy can be easily fabricated and worked. Forging,
rolling, and swaging are accomplished by general sheet
metal working methods; in fact, the low rate of work
hardening facilitates these operations by reducing spring-back.
C-103 may be machined by the usual techniques, although
the surface galling tendency makes it similar to lead
or soft copper.
TIG
is the best welding method. Electron beam welding is
also excellent, but the necessary equipment is not always
available. For TIG, properly designed trailer shields
and backup grooves with adequate gas flow can produce
welds of a quality equal to those made with electron
beam equipment.
MECHANICAL
PROPERTIES
Figures 1 and 2 contain mechanical properties data that
has been used successfully as design criteria for over
20 years, while providing necessary safety margins.
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