347H Stainless Steel Knowledge

Description

347H is the high-carbon grade of 347, engineered for maximum creep strength and structural stability at extreme temperatures.

Chemical Composition

C 0.04–0.10, Cr 17.0–19.0, Ni 9.0–13.0, Nb+Ta ≥ 10×C%

Mechanical Properties

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

Advantages

Best-in-class high-temperature creep strength among stabilized 18-8 grades. Superior to 321H in severe thermal cycling.

Applications

Superheater tubes, reheater tubes, power generation equipment, high-temperature pipelines.

Equivalent Grades

UNS S34709, EN 1.4912, GB 07Cr18Ni11Nb

 

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.