347 Stainless Steel
347 stainless steel is an austenitic stainless steel stabilized by additions of columbium (plus tantalum) and has slightly improved corrosion resistance over type 321 stainless steel in strongly oxidizing environments. 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.
Product Forms & Size Range
347 Stainless Round Bar diameters range from 0.125″ to 14.00″ diameter.
flat bar comes in a variety of thicknesses and widths. For more information please request a quote.
Stainless Plate Thickness ranges from 0.1875″ to 6.50″ Thick.
Thicknesses range from 0.0010″ to .170″ Thick.
Applications of 347 Stainless Steel
- Aerospace components and jet engine parts
- Exhaust manifolds, turbine casings, and afterburner sections
- Chemical processing equipment
- Refinery and petrochemical heat exchangers
- Piping systems exposed to polythionic acid environments
347 STAINLESS STEEL SPECIFICATIONS
SHEET SOLUTION HEAT TREATED
Annealed sheets offering excellent corrosion resistance and formability for demanding applications.
TUBING
Precision tubes designed for corrosion resistance and mechanical reliability in fluid systems.
BARS & FORGINGS
High-quality bars and forgings suitable for structural, machined, and high-stress components.
FEDERAL & MILITARY SPECIFICATIONS
Government-certified sheets ensuring performance and durability under critical service conditions.
OIL & GAS
Materials engineered to withstand sour gas, chloride stress, and harsh operating environments.
Certified Material for Critical Service
Fighter Jet Metals supplies AMS- and ASTM-certified 347 Stainless Steel, ensuring compliance with aerospace and defense quality requirements.
Each heat lot is traceable and accompanied by full material certification, mechanical test results, and chemical analysis documentation.
Our materials meet the standards for critical service applications in aerospace, power generation, and high-temperature industrial operations.