EN 1.4845 Austenitic Stainless Steel – Ultra-High-Temp Heat-Resistant Alloy

Description

EN 1.4845 is a premium high-chromium, high-nickel austenitic stainless steel, corresponding to AISI 310S, designed for extreme high-temperature applications. With 24.0-26.0% chromium and 19.0-22.0% nickel, it delivers exceptional oxidation resistance at temperatures up to 1100°C- the highest among common austenitic grades-making it suitable for continuous service in ultra-high-heat environments. The low carbon content (≤0.08%) prevents sensitization and ensures good weldability, even for heavy welded components. Unlike EN 1.4833, EN 1.4845 offers superior creep resistance and scaling resistance at extreme temperatures, while maintaining non-magnetic properties and good ductility. It is the preferred choice for applications where components are exposed to prolonged ultra-high heat.

Chemical Composition (wt%)

C ≤ 0.08, Cr: 24.00-26.00, Ni: 19.00-22.00, Mn ≤ 2.00, Si ≤ 1.50, P ≤ 0.045, S ≤ 0.030

Mechanical Properties

Tensile Strength ≥ 515 MPa, Yield Strength ≥ 205 MPa, Elongation ≥ 40%, Hardness ≤ 217 HB

Advantages

Exceptional ultra-high-temperature oxidation resistance (up to 1100°C); superior creep and scaling resistance; low-carbon for good weldability; non-magnetic; good ductility; ideal for extreme heat environments; long-term thermal stability.

Applications

Furnace linings, incinerator components, high-temperature heat exchangers, boiler superheaters, industrial heating elements, and components exposed to 900-1100°C.

Equivalent Grades

AISI 310S, UNS S31008, GB 06Cr25Ni20, SUS310S

 

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.