The A958
Grade 8620 meets all the mechanical property requirements for the
steel connector -
-- Ultimate tensile strength (80
ksi)
-- Tensile yield
strength (50 ksi),
-- Elongation (22%)
-- Reduction in area (35%) .
The
full max/min specification for chemistry (C
= 0.18/0.23, Mn =0.60/1.0, Si 0.30/0.60, P Max = 0.35, S Max =
0.04, Ni = 0.4/0.7, Cr = 0.4/0.60, Mo = 0.15/0.25)
and
the full specification for heat treatment (Austenitize
at 1650F, air quench, Temper at 1150C)
ensure
that the casting will meet specifications.
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