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Type 303 is "18-8" chromium-nickel stainless steel modified by the addition of selenium or sulphur, as well as phosphorus, to improve machinability and non- seizing properties. It is the most readily machinable of all the chromium-nickel arades and has good corrosion resistance It is non-magnetic in the annealed condition and not hardenable by heat treatment. Tensile strength and hardness can be increased by cold working. It is manufactured by the electric-furnace process and meets the exacting requirements of the aircraft industry.

UNS S30300. S30323

Color Marking

Type 303Se
Annealed Bars: Ends painted Purple
High Tensile Bars (Condition B): Ends painted Brown

Physical Condition A

Stock Lengths 10' to 12' and 20' to 22'

Max. Brinell 207
Unit of Measure
Items Rounds
3 1/8
Types 303Se Annealed and Hot Rolled Rough Turned Stainless Steel - Rounds
Rounds
3 1/4
Types 303Se Annealed and Hot Rolled Rough Turned Stainless Steel - Rounds
Rounds
3 3/8
Types 303Se Annealed and Hot Rolled Rough Turned Stainless Steel - Rounds
Rounds
3 1/2
Types 303Se Annealed and Hot Rolled Rough Turned Stainless Steel - Rounds
Rounds
3 5/8
Types 303Se Annealed and Hot Rolled Rough Turned Stainless Steel - Rounds
Estimated Weight per Foot N/A 26.10 lb N/A 28.23 lb N/A 30.45 lb N/A 32.74 lb N/A 35.12 lb
Estimated Weight 12-Ft. Bar N/A 313.2 lb N/A 338.8 lb N/A 365.3 lb N/A 392.9 lb N/A 421.5 lb