Type 321H is a titanium-stabilized austenitic stainless steel that is known for its general corrosion resistance. This higher carbon version of Type 321 stainless steel offers a wide variety of benefits including:
- Excellent resistance oxidation to 1500°F (816°C)
- Good low-temperature toughness
- Comparable corrosion resistance and machinability to Type 304
- Readily welded by most standard processes
- Very ductile and forms easily
Because of Type 321H’s features and properties, it can be found in use in a number of industries and critical applications including:
- Expansion joints
- Chemical and Petrochemical processing
- Pharmaceutical production
- Waste treatment including thermal oxidizers
- Equipment and storage units for Food processing
- Aerospace applications
For a stainless steel to receive the Type 321H label, it must have the following chemical composition. It is important to note that Type 321H has a much higher carbon level than Type 321:
- Fe balance
- Cr 17-19%
- Ni 9-12%
- C 0.04-0.10%
- Si 18-20%
- Mn 2% max
- P 0.045% max
- S 0.03% max
- N 0.10% max
- Ti 0.70% max
All of the metals that Hongwang Steel supplies of Type 321H meet the most respected international standards including ASTM, ASME, and AMS.
The above content was generated by AI assistance.

