Stainless Steel 321 is a stabilized austenitic stainless steel. It is stabilized for weldments subject to sever corrosive conditions and service from 800 to 1600 F. It is similar to stainless steel grade 304 but with a titanium amount of at least five times the level of carbon. This also helps advance the mechanical properties of the steel at higher temperatures.
Chemistry (range or maximum in %)
GRADE C MN S NI CR OTHER
Stainless Steel 321 0.08 2.00 0.03 9.00/12.00 17.00/19.00 Ti 5X (C+N)
Min. to 0.70 Max.
Grade 321 Stainless Steel Bars Properties
GRADE SHAPE SIZE RANGE TENSILE KSI YIELD KSI ELONGATION % RED. OF AREA % BRINELL HARDNESS RELATIVE MACHINABILITY SPECIFICAGION
Stainless Steel 321 Rounds 1/4″ – 12″ 85 35 55 65 150 48% AMS 5645/
ASTM A-276/
A-182/A-479/A-193
Grade 321 Stainless Steel Pipe Fittings Properties
GRADE SHAPE THICKNESS SPECIFICATION
Stainless Steel 321 pipe fittings 3/16″ – 80″ AMS 5510
Grade 321 Stainless Steel Tubes & Pipes Properties
GRADE OD SIZE RANGE CONDTION TENSILE KSI YIELD KSI ELONGATION % ROCKWELL HARDNESS ASTM SPECIFICATION
Applications:
Airplane exhaust manifolds
Pump Shafts
Stainless Steel Flanges
Mechanical Seals
Heat Exchangers
Stainless Steel Pipe Fittings
Ball Valves
Stainless Steel Pipes
Boiler shells
Process equipment
Expansion joints
Cabin heaters
Fire walls
Flexible couplings
Pressure vessels
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