Stainless Steel

321 Stainless Steel

Titanium-stabilized austenitic stainless (~18% Cr, ~10% Ni) for sustained high-temperature service.

Composition

Element	Range
Fe	Balance
Cr	17–19%
Ni	9–12%
Ti	≥0.4%
C	≤0.08%

XRF Notes

Cr-Ni profile overlaps 304; Specelex Grade ID uses stainless libraries to suggest 321 in high-temp PMI contexts.

ASTM A240AISI 321EN 1.4541

Properties

• Titanium stabilized against carbide precipitation
• Good high-temperature strength
• Non-magnetic in annealed condition

Applications

• Exhaust systems
• Heat treatment equipment
• Aerospace ducting

Related Applications

Alloy & PMI

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