Investment Casting Alloys, Materials and Capabilities

ALLOYS POURED

American Casting Company produces investment castings in a wide variety of alloys. We have the capability to use both vacuum induction and air induction melting processes.

Air Induction Melting

Used to process mild (low carbon) steels, low alloy steels, stainless steels, cobalt based alloys, and copper based alloys.

Vacuum Induction Melting

Used to process a variety of nickel based super alloys.

This diverse melting capability and alloy selection enables us to serve a variety of markets, including medical, aerospace, defense, electronics, and commercial. The chart below lists the most common investment casting alloys poured at American Casting Company, and their typical mechanical properties for reference. If you are looking for an alloy not shown below, please contact us to find out availability.

NOTE â€“ Mechanical properties listed are for information only. Refer to industry specifications for specific mechanical properties.

Mild (Low Carbon) Steel

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
1020	Annealed	55-60	35-40	25-35	Rb 80 Max
1020 Modified	Annealed	85-100	60-65	10-15	Rb 100 Max

Low Alloy Steel

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
8620	As Cast	65-75	45-55	20-25	Rb 100 Max
8620	Hardened	100-130	80-110	10-20	Rc 25-40
4130	As Cast	75-85	55-65	15-20	Rb 100 Max
4130	Hardened	130-170	100-130	5-20	Rc 23-44
4140	As Cast	85-95	65-75	15-20	Rb 100 Max
4140	Hardened	130-200	100-155	5-20	Rc 20-48
4340	As Cast	85-95	65-75	15-20	Rb 100 Max
4340	Hardened	130-200	100-180	5-20	Rc 20-48

Stainless Steel – 300 Series

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
303	Annealed	65-75	30-35	35-45	Rb 90 Max
304	Annealed	65-75	30-35	35-45	Rb 90 Max
310	Annealed	65-75	30-35	35-45	Rb 90 Max
316	Annealed	65-75	30-35	35-45	Rb 90 Max
347	Annealed	65-75	30-35	25-35	Rb 90 Max

Stainless Steel – 400 Series

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
410	As Cast	65-75	35-45	20-25	Rb 100 Max
410	Hardened	160-200	120-160	5-12	Rc 32-45
416	Annealed	65-75	35-45	12-18	Rb 100 Max
416	Hardened	95-200	95-160	3-12	Rc 20-40

PH Stainless Steel (Precipitation Hardening)

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
17-4 PH	Annealed	—	—	10-15	Rc 36 Max
17-4 PH	Hardened	150-180	140-160	6-20	Rc 34-44
15-5 PH	Hardened	135-170	110-145	5-15	Rc 28-38

Cobalt Chromium Molybdenum (CoCrMo)

for Surgical Implants

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
ASTM F75	As Cast	95-105	65-75	6-10	25-35

Cobalt Based Alloys

for high wear applications

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
Cobalt 21	As Cast	80-90	60-70	8-12	Rc 34 Max
Cobalt 25 (L-605)	As Cast	110-125	70-80	6-10	Rc 40-45
Cobalt 31	As Cast	100-120	70-80	6-10	Rc 34-40

Nickel Based Alloys

vacuum melt only

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
Inconel 625	As Cast	85-95	45-55	25-30	Rc 25 Max
Inconel 713	As Cast	110-120	100-110	3-5	Rc 34-42
Inconel 718	As Cast	110-125	70-80	6-10	Rc 25 Max
Inconel 718	Hardened	125-135	110-120	5-7	Rc 34-44
Rene 41	Annealed	100-110	90-100	3-5	Rc 35 Max
Mar-M-247	Hardened	135-145	115-125	4-6	Rc 34-44
Haynes 230	Annealed	115-125	50-60	35-45	Rc 25 Max
Nickel X	As Cast	55-65	35-45	6-10	Rc 24 Max

Copper Based Alloys

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
Silicon Bronze	As Cast	45-50	25-30	10-15	HB 80-90
Yellow Brass	As Cast	25-35	10-15	25-35	HB 40-60

Not Poured By American Casting

For Reference Only

Alloy	Heat Treatment	UTS (kpsi)	YS (kpsi)	% Elongation	Hardness
Ti6Al-4V	Hardened	130-135	115-120	3-8	Rc 34-38
Ductile Iron		60-100	40-70	3-18	HB 120-240
Cast A356 Al	Hardened	35	25	2-4	HB 70
Wrought 6061 Al	Hardened	45	40	10-12
Wrought 7075 Al	Hardened	75	65	9-11