321 stainless is a titanium stabilized grade commonly used for service in the 1000-1600°F temperature range. For service temperatures up to about 1600°F, a stabilizing treatment at 1550-1650°F, air cool, may be used to provide optimum resistance to intergranular corrosion and to polythionic acid stress corrosion cracking.
321 stainless is readily welded by all common methods including submerged arc. Appropriate weld fillers are AWS ER347 bare wire and E347 covered electrodes. 321 stainless is similar in machinability to 304 stainless steel. It has a machinability rating of 45% relative to AISI B1112.
| MIN || 17.0 || 9.0 || - || - || 5x(C+N) || - || - || 0.25 || - || - || - || - |
| MAX || 19.0 || 12.0 || 0.75 || 0.75 || 0.7 || 0.08 || 2.0 || 1.0 || 0.04 || 0.03 || 0.1 || Balance |
AMS 5510, AMS 5645, ASME SA 240, ASME SA213, ASME SA 312, ASME SA 479, ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 312, ASTM A 479, EN 1.4541, GE B50T1181, GE B50T12, QQS 763, QQS 766d, UNS S32100, Werkstoff 1.4541
321 Coil, 321 Plate, 321 Round Bar, 321 Sheet, 321 Tubing
Common Trade Names
321, 321 Stainless, Alloy 321
- Oxidation resistant to 1600°F
- Stabilized against weld heat affected zone (HAZ) intergranular corrosion
- Resists polythionic acid stress corrosion cracking
- Aircraft piston engine manifolds
- Expansion joints
- Thermal oxidizers
- Refinery equipment
- High temperature chemical process equipment
Production Process Steps:
Seamless Pipe Production Flow Chart: Stainless Steel Bar-> Inspection-> Peeling-> Cut-Center-> Heating-> Piercing-> Inspection/Polishing-> Pickling-Cold Rolling/Drawing-> Pickling-> Solution Annealing-> Straightening-> Cutting-> Bright Annealing/Pickling Passivating-> Composition Inspect-> Marking-> Packing-> Storing-> Shiping.
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