AMS 5512 - 347 Stainless Steel Sheet and Plate
The AMS 5512 standard includes 347 stainless steel in the form of sheets and plates when in the solution heat-treated condition. 347 is a chromium-nickel alloy of the austenitic class and is further alloyed with columbium, niobium, and tantalum to prevent carbide precipitation during welding and at high temperatures, which in turn provides resistance to intergranular corrosion. This makes 347 stainless steel suitable for application in the aerospace and chemical industry at high temperatures.
Applications of AMS 5512
- Aircraft exhaust systems, manifolds, and collector rings
- Chemical processing equipment exposed to oxidizing agents
- Refinery and petrochemical piping
- Heat exchangers and pressure vessels operating in high-temperature ranges
- Heavy welded assemblies that cannot be annealed after fabrication
347 stainless steel under AMS 5512 is especially preferred in welded aircraft components where resistance to intergranular attack and oxidation is essential.
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
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.