Investment Casting Metals

We pour everything from 400 series stainless steel to aluminum. In fact, we pour pretty much any alloy 24/7 with very few exceptions. Expolore your options and discover the right alloy for your components. 

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400 Series Stainless Steels

The 400-series group of stainless steels contain 11-27% chromium, up to about 1% carbon, and 2.5% nickel maximum. The grades Signicast most often produces respond to heat treatment and can be supplier with a predominantly martensitic microstructure in a wide range of strength and hardness. The high carbon types combine fairly high wear resistance with high corrosion resistance. While the martensitic grades can contain up to about 15% ferrite, wholly ferritic grades can be produced as well. These grades are not hardenable but possess better weldability and hot gas corrosion resistance than the martensitic grades. Generally 400 series alloys alloy are not as corrosion resistant as the 300 series but they are stronger and in spedific environments provide a more cost effective solution. 

300 Series Stainless Steels

The 300-series group of stainless steels contain 16-30% chromium and from 6-35% nickel. Depending on the composition, the microstructure is predominantly or wholly austenitic and thus unresponsive to heat treatment. The 300 series stainless steels are easily welded and machined but readily work hardened. Generally supplied in the solution annealed condition, these alloys have great corrosion resistance and generally maintain their properties at high temperatures. 

Contact us or email to our sales team directly for your project info@ego-mfg.com 

Carbon And Low Alloy Steels

Carbon and low alloy steels are the workhorses of the mechanical world. No other class of materials offers as wide a range of mechanical properties as economically. Carbon steels are alloys of iron, carbon, manganese, and silicon.

Low alloy steels are similar to carbon steels but have additional alloying elements like chromium, molybdenum, etc., to improve their heat treat response. With heat treating, ultimate strengths from about 60 – 300 ksi are possible within this group of materials. Utilizing specialized heat treating processes, it is possible to engineer parts with specific properties in different areas of the same part. An example of this would be first heat treating the casting to a very tough condition for impact resistance, then applying a second surface hardening heat treatment to make the surface wear resistant.

Aluminum Investment Casting

Aluminum alloys possess a unique combination of mechanical properties and corrosion resistance. These alloys are roughly one-third as dense as steel with higher strength to weight ratios. Their elastic modulus is also about one-third that of steel, but with careful design, structures that are lighter and more rigid can be cast in aluminum than in steel. In oxidizing environments, aluminum alloys form a tight, protective layer of aluminum oxide on their surfaces which essentially prevents further oxidation. Aluminum alloys are almost always provided in the solution annealed and aged condition. Unlike steels, aluminum alloys do not have a fatigue limit and are therefore not usually selected for applications involving high cycle fatigue.

Contact our engineer to know more details about investment casting! Or email to our sales team directly for your project info@ego-mfg.com