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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 303S
Annealed Bars and Pump Shafting: Ends painted Red
High Tensile Bars (Condition B): Ends painted Gray & Orange

Stock Lengths 10' to 12'

Max. Brinell 235
Unit of Measure
1 

Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

2 3/4 N/A 25.74 lb N/A 308.8 lb
3 N/A 30.63 lb N/A 367.5 lb
3 1/2 N/A 41.69 lb N/A 500.3 lb
4 N/A 54.45 lb N/A 653.4 lb
Unit of Measure
1