|
The ASTM A-890 Grade 4A (CD3MN) is a duplex stainless steel
cast alloy with the following composition
C -
0.03 max, Cr - 21.0- 23.5,
Ni 4.5-6.5 max,
Cu - 1.0 max N
-
0.10-N-025, Mn - 1.50
max,
P - .040 max, S -
0.020 max, Si = 1.0 max,
N - 0.10-0.30
The
4A grade exceeds the % elongation requirement, but doesn't meet the requirements for ultimate
tensile strength or yield strength.
|
