EN 1.4948 Austenitic Stainless Steel – Heat-Resistant High-CrNi Alloy

Description

EN 1.4948 is a high-chromium, high-nickel austenitic stainless steel, designed for extreme high-temperature applications requiring exceptional heat and corrosion resistance. Composed of 19.0-23.0% chromium, 19.0-23.0% nickel, and small additions of titanium and aluminum, it delivers superior oxidation resistance at temperatures up to 1100°C, making it suitable for continuous service in ultra-high-heat environments. Unlike standard austenitic grades like EN 1.4301, it offers enhanced creep strength and scaling resistance, even under prolonged thermal stress. It is non-magnetic at room temperature, has good weldability and ductility, and is widely used in industrial heating, furnace, and power generation applications where components are exposed to extreme heat.

Chemical Composition (wt%)

C ≤ 0.08, Cr: 19.00-23.00, Ni: 19.00-23.00, Ti: 0.15-0.35, Al: 0.15-0.35, Mn ≤ 2.00, Si ≤ 1.00, P ≤ 0.045, S ≤ 0.030

Mechanical Properties

Tensile Strength ≥ 500 MPa, Yield Strength ≥ 200 MPa, Elongation ≥ 40%, Hardness ≤ 201 HB

Advantages

Exceptional ultra-high-temperature oxidation resistance (up to 1100°C); superior creep and scaling resistance; non-magnetic; good weldability and ductility; ideal for extreme heat environments; stable at high temperatures.

Applications

Furnace linings, incinerator components, high-temperature heat exchangers, boiler superheaters, industrial heating elements, and components exposed to prolonged ultra-high heat.

Equivalent Grades

AISI 310Cb, UNS S31042, GB 06Cr21Ni20Nb2

 

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.