347 Stainless

Atlanta Rod manufactures 347 Stainless Steel bolts, rod assemblies, studs, hex nuts, and 12- point flange bolts and nuts to your custom specifications, and we guarantee to meet your delivery schedule. At Atlanta Rod and Manufacturing Co., Inc. we strive to provide our customers with the most innovative products and quality materials in the industry.

ASTM A354

347 stainless steel has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. Type 347 is stabilized with columbium, it is preferable for aqueous and low temperature environments due to its good resistance to intergranular attack. Both 347 and 321 offer good resistance to polythionic acid stress corrosion cracking, encountered in oil refineries. The high temperature oxidation resistance of 347 is similar to that of 304 stainless steel. Useful to 1500°F.

CHEMICALS

Cr Ni Cb + Ta C Si Mn P S Fe
MIN 17 9 Cb 10xc 0.04
MAX 19 13 1 0.08 0.75 2 0.045 0.03 Balance

MECHANICALS

Tensile Strength, ksi 75
0.2% Yield Strength, ksi 30
Elongation, % 40
Hardness Max, Brinell 201
Temperature, °F 68 400 800 1000 1200 1350 1500
Ultimate Tensile Strength, ksi 93.3 73.6 69.5 63.5 52.3 39.3 26.4
0.2% Yield Strength, ksi 36.5 36.6 29.7 27.4 24.5 22.8 18.6

 

Features

Applications

* Above data from Allegheny Ludlum Steel Corporation’s Blue Sheet and Rolled Alloys