321 round steel is a titanium-containing austenitic stainless steel. Its core advantages are high temperature resistance and resistance to intergranular corrosion. It is mainly used in fields such as
321 stainless steel is an austenitic stainless steel that undergoes stabilization treatment by adding titanium (Ti) elements on the basis of 304.
⚙️ Core Properties
· Resistance to intergranular corrosion: The added titanium preferentially combines with carbon, preventing the formation of chromium carbides during welding. This effectively avoids 'chromium depletion' and intergranular corrosion. It is recommended for use in the 'sensitization temperature range' of 430°C - 900°C.
· Superior high-temperature strength: At temperatures above 500°C, its creep and tensile strength are better than those of 304 and 304L.
· Key performance parameters: Tensile strength ≥520MPa, yield strength ≥205MPa, hardness ≤200HV, density approximately 7.9g/cm³. Its resistance to chloride pitting is generally moderate, and it is not recommended for use in seawater environments.
🏭 Main Application Industries
It is widely used in scenarios requiring direct use after welding without annealing, or operation at medium to high temperatures:
· Petrochemical industry: Refining equipment, high-temperature steam pipelines, chemical transport vehicles.
· Power and energy: Boiler casings, heat exchangers, gas turbine components, engine exhaust pipes.
· Aerospace: Heavy aircraft exhaust manifolds, jet engine components.
SpecificationsPacking
FAQ
Q:Do you make customized products based on our designdrawings or ideas?
A:Yes, we are a professional metal fabrication factory with an experi-enced engineering team to make custom products according to cli-ents'drawings and ideas.
Q: What is the MOQ?
A: Usually we don't set MOQ, but the more, the cheaper. Besides, weare happy to make prototype or sample for clients to ensure qualitystandard.
Q: Do you handle powder coating yourself?
A: Yes, we are a professional sheet metal fabrication factory providingfull set of manufacturing service including laser cutting, NCT punching,bending, welding(TIG, CO2 arc welding), grinding, belt polishing,powder coating&paint coating, silkscreen.
Q: Could you help us with warehousing?
A: Sure, we have plenty of space in factory and we are glad to makefull use of it by warehousing products for clients even for one year.
630,431,1Cr13,2Cr13,3Cr13,4Cr13,201...Round steel is used in machinery manufacturing, petroleum chemical industry and marine engineering, automobile and transpo
