EN 1.4306 Austenitic Stainless Steel – High-Carbon High-Temperature Stable Alloy

Description

EN 1.4306 is a high-carbon austenitic stainless steel, corresponding to AISI 304H, engineered specifically for elevated-temperature applications. With a carbon range of 0.04-0.10%, it offers enhanced creep resistance and mechanical stability at temperatures above 500°C, outperforming its low-carbon counterpart EN 1.4301 in high-heat environments. It retains the same chromium-nickel composition as EN 1.4301, ensuring non-magnetic properties and reliable general corrosion resistance. Unlike EN 1.4301, EN 1.4306 is optimized for long-term service in high-heat settings, where lower-carbon grades may experience strength degradation. It features good weldability and formability, making it suitable for high-temperature pressure components in power generation, boiler, and industrial heating systems.

Chemical Composition (wt%)

C: 0.04-0.10, Cr: 18.00-20.00, Ni: 8.00-12.00, Mn ≤ 2.00, Si ≤ 1.00, P ≤ 0.045, S ≤ 0.030, N ≤ 0.11

Mechanical Properties

Tensile Strength ≥ 520 MPa, Yield Strength ≥ 205 MPa, Elongation ≥ 40%, Hardness ≤ 200 HB

Advantages

Superior high-temperature creep resistance vs. EN 1.4301; excellent oxidation resistance at elevated temperatures; non-magnetic; good weldability and formability; stable mechanical performance at 500°C+; suitable for high-temperature pressure parts.

Applications

Boiler tubes, high-temperature piping, heat exchangers, furnace components, power generation equipment, and industrial heating systems requiring long-term high-heat stability.

Equivalent Grades

AISI 304H, UNS S30409, GB 07Cr19Ni10, SUS304H

 

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.