AMS 5556 - 347 Stainless Steel Seamless or Welded Hydraulic Tubing
AMS 5556 includes 347 stainless steel tubing that can either be seamless or welded and solution heat-treated. Type 347 is a chromium-nickel austenitic stainless steel that has columbium and tantalum stabilizers to provide it with outstanding resistance to intergranular corrosion, oxidation, and high temperatures’ creep strength.
This specification ensures the quality and performance of the tubing in aerospace, chemical, and high-temperature fluid systems.
Applications of AMS 5556
- Aircraft hydraulic and pneumatic systems
- Fuel and oil transfer lines in aerospace environments
- Exhaust manifolds and ring collectors
- High-temperature process piping in petrochemical and refinery plants
- Marine and power generation systems requiring resistance to polythionic acid corrosion
AMS 5556 tubing is essential in aerospace and defense sectors where strength, corrosion resistance, and weld integrity are mission-critical.
What is 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.
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.