Stainless Steel Alloy 321H

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

Common Surfaces

Stainless Steel Standards Comparison Table