Types ATI 201 HP™ and ATI 201L HP™ are comparable to chromium-nickel types 301, 304, 304L in many respects, but they can provide some advantages over the 18-8 grades in certain applications. Lower cost manganese and nitrogen additions are partial substitutes for nickel in types ATI 201 HP™ and ATI 201L HP™, making them more economical alloys. Because they possess a very desirable combination of economy plus good mechanical properties and corrosion resistance, they have been used in a wide variety of consumer and transportation applications, as illustrated in the following table.

Formability

• Cookware Bodies/Lids

• Hose Clamps

• Piston Rings

• Washing Machine Baskets

Structural Strength

• Transit Car Structural Members

• Transit Car Roofing/Siding

• Thermal Window Spacers

• Air Bag Containers

• Truck Trailer Posts and Door Frames

ATI 201L HP™ alloy is a low carbon version of ATI 201 HP™ and maintains satisfactory intergranular corrosion resistance in applications involving welding, particularly for heavier-gage material.