Type 304 is the most widely used alloy of all stainless steels. 300 Series Stainless steel alloys resist corrosion, maintain their strength at high temperatures and are easy to maintain. 300 series grades are inventoried in in stainless steel plate, sheet, bar, pipe, tube and structural products.
400 Series Martensitic – Alloys. The 400 series that CDM typically sells is 410. It is a straight chromium alloy, with carbon levels that can vary from 0.10 to 0.65%. This radically changes the behavior of the martensitic alloys relative to the ferritic 400 series alloy.
Stainless steels are classified by their crystalline structure into three main types: Austenitic; Ferritic; Martensitic; Austenitic steels have austenite as their primary phase. These alloys contain chromium and nickel, and sometimes manganese and nitrogen.
The properties of duplex stainless steels are achieved with an overall lower alloy content than similar-performing super-austenitic grades, making their use cost-effective for many applications. Duplex grades are characterized into groups based on their alloy content and corrosion resistance.
Martensitic stainless steel is a specific type of stainless steel alloy. Stainless steels may be classified by their crystalline structure into three main types: austenitic, ferritic and martensitic. Martensitic stainless steels can be high-or low-carbon steels built around the Type 410 composition of iron, 12% chromium, and up to 1.2% carbon.
Precipitation hardening, also called age hardening or particle hardening, is a heat treatment technique used to increase the yield strength of malleable materials, including most structural alloys of aluminium, magnesium, nickel, titanium, and some steels and stainless steels.
Type 316L—is an extra low carbon grade of 316, generally used in stainless steel watches and marine applications, as well exclusively in the fabrication of reactor pressure vessels for boiling water reactors, due to its high resistance to corrosion.