Investment Casting Alloys Compositions

The tables below list some common investment casting alloys' 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

SUS 304

<= 0.35

0.0010 - 0.010

<= 0.080

13.5 - 16.0

<= 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 %