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 Continental Steel supplies of Type 321H meet the most respected international standards including ASTM, ASME, and AMS.