Stainless Steel 321

Technical Data Sheet


Chemical Composition Limits
Weight% C Si Mn P+S Cr Ni Ti N Fe Mo
AMS 5510
Alloy 321
0.08 max 0.25-1.00 2.0 max 0.040P
17-19 9-12 0.7 max 0.1 max Bal 0.75


Typical Mechanical Properties


Material Tensile Strength Rm, N/mm² Yield Strength Rp 0.2, N/mm²
% Elongation
Alloy 321 Tube
500-730 200 35

Stainless Steel 321 is available in Capillary tube, Instrument tube, Precision tube and Hydraulic tube. On request Stainless Steel 321 can also be supplied in Coiled Tube with a seamless and welded execution.
Stainless Steel 321 Capillary tube can be either harddrawn (hardness 260-330 HV) or annealed (hardness <180 HV). The tolerances are according to DIN 17458/ISO 1127 D4/T3. We can also supply Welded/ Redrawn (in the same conditions).  
Capillary tubes can be supplied with various point styles : Blunt end - square cut /Chamfered edge / Radiused/ Tapered. Flat ground-point, Back cut bevel, Lancet level, Closed round end, Flared end and Threaded end
For all stock availability contact Sales.

AMS 5510 Sheet / strip / plate
AMS 5557 Welded/seamless tube
AMS 5559 Welded / thin wall tube
AMS 5570 Seamless tube
AMS 5576 Welded tube
AMS 5645 Bars / wire / forging
MIL-T-8606 Seamless tube
MIL-T-8606 Welded tube
MIL-T-8808 Seamless tube
MIL-T-8808 Welded tube
ASTM A240 / ASME SA240
ASTM A167 / ASME SA167
ASTM A193 Grade B8T CL1
ASTM A276 / ASME SA276
ASTM A314 / ASME SA314
ASTM A320 Grade B8T
ASTM A479 / ASME A479
ASTM A484 / ASME SA484
AISI 321
BS 2S129
BS T67 Tube
BS S524 Sheet
BS S526 Sheet
BS 970; 321S31
WS 1.4541


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Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.