In many cases, UNS identifiers share the same first three numbers as their AISI equivalent.īut there’s also grading systems created by:
#STEEL S FULL#
You can find a full list of common identifiers here. These are known as Unified Number System (UNS) identifiers. However, you might also see grades in North America identified using a six-character identifier set by the and American Society for Testing and Materials (ASTM). Older grades often feature a three-digit identifier established by the Society of Automotive Engineers (SAE). Within families, you’ll find various grades that help to describe specific properties of the alloy such as toughness, magnetism, corrosion resistance and alloy composition.
To truly understand what separates one type of stainless steel from another, you’ll need to look at its grade. Martensitic & Precipitation Hardening Stainless Steelīut the family is only part of the story.Stainless steel falls into four distinct families: Stainless Steel Families: Four Options with Unique Propertiesįamilies refer to specific properties and give an idea as to the ratio of various metals in the alloy.
There’s two main labels you’ll find on most stainless steel alloys:īut what can you learn about these alloys from their labels? Let’s take a look at common types and considerations… Stainless Steel Identifiers-Understanding the Various Types One of the first steps in finding the best options when working with stainless steel is determining the proper alloy for your product.
While stainless steel gets a large part of its corrosion resistance from chromium, there are near-endless combinations of various metals marketed as stainless steel today. While stainless steels will share some characteristics, understanding the different types available is essential to finding the optimal traits and price point for your needs.ĭue to its versatility, durability and affordability stainless steel production continues to increase around the world year after year.īut stainless steel isn’t a single alloy.
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