321 Stainless Steel per AMS 5570
321 Stainless Steel Seamless Tubing in the solution heat treated condition is covered in AMS 5570. Titanium-stabilized chromium-nickel austenitic stainless steel is used when a material is required which resists corrosion and oxidation in environments where continuous service temperatures up to 1500°F (816°C) are encountered. It also possesses high creep and stress-rupture strengths and resists intergranular corrosion even in welded material.
Applicaitons of AMS 5570
AMS 5570 seamless 321 stainless steel tubing is highly valued when you need stable dimensions, good oxidation resistance, and reliable welds.
The following are its main uses:
– Aerospace: It is used for engine bleed air ducts, manifolds, and high-temperature hydraulic lines.
– Chemical processing: It is used for piping systems exposed to hot oxidizing or mildly reducing environments.
– Power generation: It is used for steam lines, boiler tubing, and heat recovery systems.
– Automotive/motorsport: It is used for high-performance exhaust manifolds and catalytic converter tubing.
– Defense/marine: It is used for lightweight tubing for heat-resistant, corrosion-susceptible systems.
What is 321 Stainless Steel ?
321 Stainless Steel is a titanium stabilized chromium nickel austenitic stainless steel with corrosion resistance similar to 304/304L.
321 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.
321 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
Materials produced and supplied to AMS 5510, AMS 5645, AMS 5689, and related specifications can be delivered with:
- Certificates of Compliance (CoC) confirming adherence to AMS and ASTM standards.
- Mill Test Reports (MTRs) specifying chemical composition, mechanical properties, and heat-treatment data.
- Traceability documentation from melt source to final product batch.
Such certification is essential for aerospace, oil & gas, and defense applications, where traceable quality assurance is required for safety and regulatory compliance.