Why Stainless Steel Casting?

Stainless steel casting plays an important role in products for a wide range of industries. These include marine, water and chemical treatment, food processing for both humans and animals, medical instruments and cutlery applications, to name just a few.

It’s often the top choice for applications that require exceptional resistance to corrosion. Stainless steel’s corrosion resistance is due to its high level of chromium, at least 10.5%.

The stainless steel used in casting includes two main categories: austenitic and martensitic.

Austenitic stainless steel contains “austenite” (a metallic, non-magnetic allotrope of iron or a solid solution of iron, with an alloying element) and about 8-10% nickel. This steel alloy is non-magnetic and provides outstanding mechanical properties in addition to corrosion resistance. Austenitic materials are considered the most commonly used stainless steels.

Martensitic stainless steel generally contains no nickel and is magnetic. It also generally contains more chromium. Besides corrosion resistance, this steel alloy also displays exceptional mechanical properties and wear resistance.

The key factor that separates austenitic and martensitic stainless steel is the difference in their crystal structure.

Another way to differentiate stainless steel is by series. Considered austenitic, 300 series stainless steel is generally provided in the solution annealed state and ranges around 65,000 psi for tensile strength and 30,000 psi for yield strength.

On the other hand, 400 series stainless steel is considered martensitic and can range from 70,000 psi to 270,000 psi tensile strength and from 45,000 psi to 280,000 psi yield strength when hardened.

The most popular grades of stainless steel are 303, 304 and 316, primarily for their levels of corrosion resistance, and 410, 416 and 420, for their levels of toughness and wear resistance.

Avalon is a leader in stainless steel casting. We pour a full range of martensitic and austenitic stainless steel, including the most popular grades, as well as other options such as P-H stainless steel. Our expertise in stainless steel casting means we understand your needs and ensures you’ll get the parts your application demands.

Contact us today for more information.

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