GRADE 303

303 is a free-machining variation of 304. The addition of sulfur for better machinability makes this a favorite for use in automatic screw machines. Corrosion resistant to atmospheric exposures, as well as a wide range of chemicals; most dyes, foods and nitric acid.

GRADE 304/304L

The most widely used of the austenitic grades, 304 offers good corrosion resistance to many chemicals and industrial atmospheres. Generally considered non-magnetic, it can become slightly magnetic when cold-worked. 304 is non-hardenable by heat treatment. In 304L, the carbon content has been lowered to .03% max. for corrosion resistance at heat affected zones from welding.

GRADE 316/316L

316 is an austenitic chrome nickel steel with superior corrosion resistance to that of other chrome nickel steels. Widely used when exposed to chemical corrodents, as well as marine atmospheres. 316 is generally considered non-magnetic, but can become magnetic when cold worked. In 316L, the carbon content has been lowered to .03% max. for corrosion resistance at heat affected zones from welding.

GRADE 416

416 is a martensitic chromium steel to which elements have been added to enhance the machinability. 416 is the most readily machinable of all the stainless steels and is suitable for use in automatic screw machines. 416 is less corrosion resistant than the chrome-nickel steels. It is magnetic in all conditions.

GRADE 420

420 is a martensitic chrome steel capable of hardening to a maximum of approximately 500 Brinell. It has its optimum corrosion resisting qualities in the hardened and tempered condition. 420 is magnetic in all conditions.

GRADE 440C

440C is a martensitic chrome steel that is capable of acquiring, upon heat treatment, the highest hardness of any type of corrosion resisting steels. It has its optimum corrosion resisting qualities in the hardened and tempered condition and is magnetic in all conditions.

GRADE 17-4 PH (630)

17-4 is a martensitic precipitation hardening (maraging) steel that combines high strength and hardness with excellent corrosion resistance. A simple one-step aging treatment in the range of 900 to 1150 degrees hardens the alloy to its design strength levels.