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 12'
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Size

Estimated Weight per Foot

Estimated Weight 12-Ft. Bar

N/A .0418 lb N/A .5016 lb
N/A .1671 lb N/A 2.005 lb
N/A .2610 lb N/A 3.132 lb
N/A .3759 lb N/A 4.510 lb
N/A .5116 lb N/A 6.139 lb
N/A .6682 lb N/A 8.019 lb
N/A 1.044 lb N/A 12.53 lb
N/A 1.504 lb N/A 18.04 lb
N/A 2.046 lb N/A 24.56 lb
N/A 2.673 lb N/A 32.07 lb
N/A 3.383 lb N/A 40.59 lb
N/A 4.176 lb N/A 50.12 lb
N/A 6.014 lb N/A 72.17 lb
N/A 8.186 lb N/A 98.23 lb
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