Stainless Steel Alloy 303, A1

Type 303 Stainless Steel, often known as A1, is a frequently employed austenitic, non-magnetic stainless steel. Type 303 is distinguished by a variety of notable qualities, including:

Simple fabrication

Superior heat and oxidation resistance when occasionally exposed to temperatures up to 760°C

Slightly more resistant to corrosion than Type 304

For a product to be marketed as Type 303 Stainless Steel, it must possess a distinct chemical composition that comprises the following:

Fe 69% 

Cr 17-19%

Ni 8-10%

Mn 2.0% 

Si 1.0% 

P 0.20% 

C 0.15% max 

S 0.15% min

Numerous businesses employ Type 303 Stainless Steel for a variety of purposes, including:

Aeronautical fittings

Screws

Bolts and screws

Gears

Bushings \sShafts

Food manufacturing

Alloy 303 is an austenitic stainless steel that is not magnetic and can't be made harder by heating it. It is a change to the 18% chromium/8% nickel stainless steel that makes it easier to work with. Alloy 303 was made to be easier to work with and to have good mechanical and corrosion-resistant properties. Due to the presence of sulfur in the steel, Alloy 303 is the easiest austenitic stainless steel to work with. However, the addition of sulfur does make Alloy 303 less resistant to corrosion than Alloy 304. Alloy 303 is very tough, just like other austenitic grades, though the sulfur does make it a little less tough.

SSM is a supplier and distributor of Type 303 Stainless Steel in numerous forms and configurations, including flat, round, and square bar.