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Investment Casting Alloys Compositions

The tables below list some common investment casting alloys' compositions.

Investment Casting Alloy Compositions (%)

Component Al Si Fe Cu Mg Mn Zn Ti
A356 91.2 - 93.1 6.5 - 7.5 0.13 - 0.25 Max 0.1 0.3 - 0.45 Max 0.05 Max 0.05 Max 0.2
Component Al Cu Fe Mg Mn Si Ti Zn
A514.2 94.2 - 96.4 % <= 0.10 % <= 0.30 % 3.60 - 4.50 % <= 0.10 % <= 0.30 % <= 0.20 % <= 0.10 %
Component Al B C Cr Fe Mn Mo Ni S Ti W V
SUS 304 <= 0.35 0.0010 - 0.010 <= 0.080 13.5 - 16.0 60 <= 2.0 1.0 - 1.50 24.0 - 27.0 <= 0.030 1.90 - 2.35 3.0 - 4.50 0.10 - 0.50
Component C Cr Fe Mn Mo P Si S
AISI 4140 0.380 - 0.430 % 0.80 - 1.10 % 96.785 - 97.77 % 0.75 - 1.0 % 0.15 - 0.25 % <= 0.035 % 0.15 - 0.30 % <= 0.040 %