321H Stainless Steel Knowledge

Description

321H is the high-carbon version of 321, designed for elevated-temperature creep and stress‑rupture performance.

Chemical Composition

C 0.04–0.10, Cr 17.0–19.0, Ni 9.0–12.0, Ti ≥ 5×C%

Mechanical Properties

Tensile Strength ≥ 515 MPa, Yield Strength ≥ 205 MPa, Elongation ≥ 40%

Advantages

Superior high-temperature creep strength vs. 321. Excellent stability in long-term high‑heat service.

Applications

Power plant piping, boiler tubes, high-pressure high-temperature components.

Equivalent Grades

UNS S32109, EN 1.4878, GB 07Cr18Ni11Ti

 

Stainless Steel Suppliers

If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

 

Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.