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Stainless Steel 321/H

Durable, stress-resistant 321/H stainless steel gets the job done. Whether manufacturing piston engine manifolds for the aerospace industry or thermal oxidizers in waste treatment applications, this dynamic alloy offers the chemical properties and physical characteristics you need. Review the benefits and specifications of this stainless steel type today before sourcing your chosen alloy from Arbor/Metals, Inc.

Benefits of Choosing 321/H Stainless Steel

While most stainless steel grades are known for their corrosion resistance, this austenitic, titanium-stabilized alloy provides intergranular corrosion resistance and protection against chromium carbide formation. Here are other key properties as you consider stainless steel type 321/H for your application:

  • Low-temperature strength
  • High ductility
  • Competitive machinability
  • Oxidation resistance up to 1,500 degrees Fahrenheit
  • Strong weldability

Connect with your 321/H stainless steel supplier to discuss specific benefits related to your application. While this alloy can be cold worked and processed using standard fabrication techniques, heat treatment hardening is not recommended.

Chemical Properties of 321/H

The chemical composition of this alloy allows 321/H stainless steel products to achieve the many benefits. Compare its composition with other stainless steel alloys to see how it performs in a range of applications related to your industry. Here are the minimum and maximum allowable ranges, by weight, of the chemical properties of 321/H steel:

  • Carbon: 0.04-0.1%
  • Chromium: 17-19%
  • Manganese: 2%
  • Nickel: 9-12%
  • Sulfur: 0.03%
  • Phosphorus: 0.045%
  • Nitrogen: 0.1%
  • Iron: Balance
  • Titanium: From five times (carbon plus nitrogen) to 0.7%

Thanks to its weldability and cold-forming capabilities, 321/H steel can be shaped to fit your application. It complies with ASTM standard A 240, ASME standard SA 240, and AMS standard 5510.

Dynamic 321/H Stainless Steel Products by Industry

Alloy 321/321H heat-resistant stainless steel plate, wire, bar stock, and other forms can be used in many industries. The following industries and example products demonstrate the alloy’s versatility:

  • Aerospace: Piston engine manifolds, flanges, and exhaust ducts 
  • Food processing: Storage equipment and processing equipment
  • Energy: Polythionic acid service, chemical processing, and expansion joints
  • Waste treatment: Heat exchangers and combustion chambers

Work With a 321/H Stainless Steel Supplier Today

While not the most common steel grade, 321/H stainless steel offers distinct advantages for many industries. At Arbor/Metals, Inc., we not only provide stock sizes of 321/H and other alloys but also offer in-house processing services to accelerate your manufacturing process. Request a quote today to see how you can receive the optimal alloy processed to your specifications and needs.

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