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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'
Unit of Measure
1 2 3 

Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

1 1/4 x 5 N/A 21.27 lb N/A 255.2 lb
1 1/4 x 6 N/A 25.52 lb N/A 306.2 lb
1 1/2 x 2 N/A 10.21 lb N/A 122.5 lb
1 1/2 x 2 1/2 N/A 12.76 lb N/A 153.1 lb
1 1/2 x 3 N/A 15.31 lb N/A 183.8 lb
1 1/2 x 4 N/A 20.42 lb N/A 245.0 lb
1 1/2 x 5 N/A 25.52 lb N/A 306.2 lb
1 1/2 x 6 N/A 30.63 lb N/A 367.6 lb
2 x 2 1/2 N/A 17.02 lb N/A 204.2 lb
2 x 3 N/A 20.42 lb N/A 245.0 lb
2 x 4 N/A 27.23 lb N/A 326.7 lb
2 x 5 N/A 34.03 lb N/A 408.4 lb
2 x 6 N/A 40.84 lb N/A 490.1 lb
2 1/2 x 3 N/A 25.52 lb N/A 306.3 lb
2 1/2 x 4 N/A 34.03 lb N/A 408.4 lb
3 x 4 N/A 40.84 lb N/A 490.1 lb
3 x 6 N/A 61.26 lb N/A 735.1 lb
Unit of Measure
1 2 3